[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.09"]
[Round "1.1"]
[White "Mareco, Sandro"]
[Black "Barreno Anleu, Hugo Augusto"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2661"]
[BlackElo "2025"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,45,156,143,177,97,178,181,185,186,323,325,329,313,351,364,418,414,518,487,785,567,1312,1298,1287,1282,1191,1108,1771,1745,1484,1504]} 1. e4 c6 2. d4 d6 3. Nc3 Qc7 4. f4 e5 5. Nf3 Bg4 6. Be3 {B12: Caro-Kann: Advance Variation} Nd7 7. h3 Bxf3 8. Qxf3 Ngf6 9. g4 {LiveBook: 3 Games} g6 (9... O-O-O 10. O-O-O h6 11. Bc4 Nb6 12. Bb3 {1-0 (21) Leko,P (2693)-Auzins,A (2151) Tallinn 2016}) 10. Bc4 ({White should play} 10. O-O-O $18) 10... O-O-O $146 (10... exd4 $16 11. Bxd4 Bg7) ({Predecessor:} 10... Bg7 11. Bxf7+ Kxf7 12. fxe5 dxe5 {1-0 (32) Calzolari,G (1890)-Fragni,E (1859) Saint Vincent 2006}) 11. Bxf7 $18 Kb8 12. O-O-O {Black must now prevent dxe5.} Bg7 (12... exd4 $142 13. Bxd4 Bg7) 13. dxe5 dxe5 14. f5 gxf5 15. exf5 Nb6 16. Bb3 c5 17. Be6 {White is clearly winning.} Bf8 (17... Qc6 $142 18. Qxc6 bxc6 19. Bxc5 Nfd5) 18. g5 Ne8 19. Nb5 Qe7 20. Rxd8+ Qxd8 21. Rd1 Qe7 22. Qg3 Bg7 {[#]} 23. Bxc5 $1 {[%mdl 512] Accuracy: White = 76%, Black = 15%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.09"]
[Round "1.2"]
[White "Diaz, Hector"]
[Black "Almeida Quintana, Omar"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "2007"]
[BlackElo "2540"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,59,0,-7,0,-8,-10,-71,-68,-113,-113,-132,-150,-144,-161,-150,-161,-135,-155,-150,-145,-167,-159,-168,-159,-237,-240,-219,-223,-366,-368,-325,-337,-338,-329,-860]} 1. d4 d6 2. c4 g6 3. Nf3 Bg7 4. Nc3 Bg4 5. e4 Bxf3 6. gxf3 Nc6 7. Be3 e5 8. d5 Nd4 9. Nb5 c5 {A42: Modern Defence: Averbakh Variation} 10. dxc6 bxc6 11. Nxd4 exd4 12. Bxd4 Qa5+ 13. Ke2 Nf6 14. Bc3 {LiveBook: 5 Games} (14. Bxf6 Bxf6 15. Qxd6 Rd8 16. Qxc6+ Kf8 17. f4 Bxb2 18. Rb1 Qc3 {0-1 (18) Hernandez Carmenates,H (2573)-Almeida Quintana,O (2524) Ciego de Avila 2010}) 14... Qc7 15. Bg2 O-O 16. Bxf6 $146 (16. Re1 $11 {remains equal.}) ({Predecessor:} 16. Re1 d5 17. e5 {½-½ (35) Savina,A (2297)-Paehtz,E (2455) St Petersburg 2009}) 16... Bxf6 $17 17. Qd2 Rab8 18. Rab1 {[#]} d5 $1 {[%mdl 512]} 19. cxd5 cxd5 20. Rhc1 Qxh2 21. Kf1 dxe4 22. fxe4 Rb5 $36 {[%mdl 2048] Black is really pushing.} 23. Qe3 Rfb8 24. Rc2 Bxb2 {...Bd4! is the strong threat.} 25. Qh3 (25. Rd1 $17 {was necessary.}) 25... Qd6 $19 26. Qf3 Be5 27. Rd1 (27. Rxb5 $142 Rxb5 28. Ke2) 27... Rb1 28. Rcc1 Rxc1 29. Rxc1 Rb2 {Hoping for ...Bd4.} 30. Ra1 $2 {Accuracy: White = 25%, Black = 100%.} (30. Kg1) 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.09"]
[Round "1.3"]
[White "Monzon Perez, Calixto Raul"]
[Black "Barrientos, Sergio E"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "1999"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,54,-30,-16,-32,-29,-23,-28,-27,-34,-40,-33,-38,-20,-26,-30,-24,-14,-20,0,5,30,-49,10,-29,-20,-149,-108,-116,-112,-114,-114,-104,-114,-227,-215,-29991,-29992]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 e5 7. Nb3 Be7 8. f3 O-O 9. Qd2 a5 10. a4 Be6 11. Rd1 {B56: Classical Sicilian: Unusual Lines} Nb4 12. Bb5 $146 ({Predecessor:} 12. Qf2 Qc8 13. Bd3 d5 14. exd5 Nfxd5 15. Nxd5 Bxd5 16. O-O Nxd3 17. Rxd3 Bc4 18. Rdd1 Bxf1 19. Rxf1 Qc4 {0-1 (19) Kim,A (2428)-Vorobiov,E (2555) Saratov 2006}) 12... d5 13. exd5 {Black has an edge.} Nfxd5 14. Nxd5 Nxd5 15. Bc5 Qc7 16. Bxe7 Qxe7 17. O-O Rfd8 18. Qf2 Rdc8 19. Rd2 Qg5 20. Kh1 (20. h4 $11 Qe7 21. Re1) 20... h5 (20... Ne3 $15 21. Rg1 {[#]} Nxc2 $1 {[%mdl 576] Remove Defender} 22. Rxc2 Bxb3 23. Rxc8+ Rxc8) 21. Re2 Nf4 $36 {[%mdl 2048] And now ...Bxb3 would win. Black has the initiative.} 22. Qe3 (22. h4 $11 {keeps the balance.} Qf6 23. Rd2) 22... Qf5 23. Rd2 Rxc2 24. Nc5 Rxd2 25. Qxd2 Bd5 26. g3 (26. Nd3 $17 {was worth a try.}) 26... Rc8 $19 27. Bd7 $2 {[#]} (27. Qe3 $19 Qc2 28. gxf4 exf4 29. Qxf4 Qxc5 30. Kg2) 27... Bxf3+ $1 {[%mdl 512] Accuracy: White = 29%, Black = 50%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.09"]
[Round "1.4"]
[White "Cuenca Jimenez, Jose Fernando"]
[Black "Cardona Mejia, Kerin Omar"]
[Result "1-0"]
[ECO "E65"]
[WhiteElo "2512"]
[BlackElo "2003"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,86,8,70,37,42,20,20,20,20,9,4,0,19,23,23,22,16,15,28,28,26,28,30,30,52,52,50,37,51,48,51,43,40,22,44,41,53,54,59,52,60,44,38,29,48,33,110,108,111,111,112,103,105,103,104,101,114,112,110,108,125,133,204,210,379,268,379,379,29999]} 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 c5 7. Nc3 Nc6 8. dxc5 dxc5 9. Be3 Be6 10. Qa4 Qa5 {LiveBook: 12 Games} (10... Nd7 $11) 11. Qb5 {E65: King's Indian: Fianchetto: 6...c5 7 0-0 without d5 by White} (11. Qxa5 Nxa5 12. Bxc5 Nd7 13. Bd4 Bxc4 14. Bxg7 Kxg7 15. b3 Be6 16. Nd4 Bf5 17. Rfd1 Nf6 18. b4 Nc4 19. Bxb7 {½-½ (59) Le Roux,J (2571)-Howell,D (2644) England 2014}) 11... Qb4 12. Nd2 Rfd8 $146 ({Predecessor:} 12... a6 13. Qxc5 Qxb2 14. Nd5 Nd7 15. Nxe7+ Kh8 16. Qd6 Be5 17. Nxc6 Qxa1 18. Nxe5 Qxa2 19. Nxd7 Bxd7 20. Qf6+ {1-0 (20) Unuk,L (2249)-Syvalahti,T (1923) Gyor 2014}) 13. Rfd1 {The position is equal.} Nd4 14. Bxd4 Rxd4 15. Nb3 Rxc4 16. Qxb7 Qxb7 17. Bxb7 Rb8 18. Ba6 Rcb4 19. Nxc5 Rxb2 20. Nxe6 fxe6 21. Bc4 R2b6 22. Rab1 Kf7 {[#] Threatens to win with ...Rc8.} 23. Rxb6 Rxb6 24. Bb3 a6 25. Rd8 Rc6 26. Nd1 Rd6 27. Rc8 Ne4 28. Kg2 Bd4 29. Bc2 Nf6 30. Rc4 Nd7 31. h4 Bb6 32. Nc3 Ne5 ({Black should try} 32... Rd4 $14 33. Bb3 Rxc4 34. Bxc4 Nc5) 33. Rf4+ $16 Kg7 {[#] Black wants to play ...Rc6.} 34. Ne4 $1 {[%cal Re4d6]} Rd4 35. Ng5 Rxf4 36. Nxe6+ Kf7 37. Nxf4 {[%mdl 4096] Endgame KBN-KBN} Ba7 38. Bb3+ Kg7 39. Ne6+ Kf6 40. Nc7 a5 (40... Ng4 $16 41. e3 (41. Nxa6 Bxf2 42. Kf3 h5 $16) 41... a5 42. Nd5+ Ke6 43. Nb6+ Kf5) 41. f4 $18 {Strongly threatening Nd5+.} Nd7 $2 (41... Ng4 42. Nd5+ Kf5 43. Nxe7+ Ke4 44. Bd5+ Ke3) 42. Ne8+ Kf5 43. Kf3 {[%csl Gf3][%cal Rg3g4]} Nf6 $2 (43... Ne5+ $18 44. fxe5 Kxe5) 44. Ng7# {Accuracy: White = 84%, Black = 45%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.09"]
[Round "1.5"]
[White "Strikovic, Aleksa"]
[Black "Cu Hor, Kelvin Emerson"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "2490"]
[BlackElo "1988"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,61,72,47,75,76,72,79,79,79,93,68,129,96,112,66,166,83,95,89,85,72,59,54,62,61,55,41,47,59,27,30,593,580,751,431,410,381,580,306,293,231,258,237,1166,1164,29987,1313,29991,29986,29986,29987,29995,2309]} 1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. e3 Bg7 5. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} b6 6. Be2 {LiveBook: 14 Games. A35: Symmetrical English: 2 Nc3 Nc6 3 Nf3} Bb7 (6... Nf6 7. O-O cxd4 8. exd4 O-O 9. d5 Na5 10. Be3 Ba6 11. b3 Rc8 12. Rc1 e6 13. Bd4 Re8 14. Re1 Bh6 15. Rc2 Nh5 16. Ne4 d6 17. dxe6 Rxe6 18. Bf1 Bb7 {½-½ (18) Tkachiev,V (2634)-Bauer,C (2651) Nancy 2015}) 7. d5 Ne5 8. Nxe5 $146 {White is better.} ({Predecessor:} 8. Nd2 d6 9. O-O Nf6 10. f4 Ned7 11. Nf3 O-O 12. e4 a6 13. h3 Ne8 {1-0 (36) Diaz Hollemaert,N (2315)-Celis,G Buenos Aires 1994}) 8... Bxe5 9. e4 d6 10. O-O h5 ({Black should try} 10... Nf6 $14) 11. Bd3 Qd7 12. f4 Bf6 (12... Bd4+ $14 13. Kh1 h4) 13. e5 (13. Qe1 $18) 13... dxe5 $16 14. f5 g5 15. Ne4 g4 16. a3 $36 {[%mdl 2048] White has the initiative.} Bg7 $1 17. b4 Nf6 18. bxc5 Nxe4 19. Bxe4 {[#] And now c6 would win.} bxc5 20. Rb1 Bh6 $2 {[%mdl 8192]} (20... Ba6 $11) 21. f6 $18 exf6 22. Rxf6 Bg7 23. Rf5 Ba6 (23... Bc8 $142 24. Rg5 Bf6) 24. Qc2 Qd6 25. Bg5 Bc8 26. Rf2 Bh6 $2 (26... O-O 27. Bh7+ Kh8) 27. Rf6 Qf8 28. Qd2 (28. Qa4+ $142 Bd7 {[#]} 29. Re6+ $1 {[%mdl 576] Deflection} fxe6 30. Bg6+ {[%mdl 64] Double Attack} Qf7 31. Bxf7+ Kxf7 32. Qxd7+ {[%mdl 64] Double Attack} Kg6 33. Bxh6 Kxh6 34. Qxe6+ {[%mdl 64] Double Attack} Kg5 35. Re1) 28... Bg7 29. d6 {White mates.} Bxf6 30. Bxf6 Rh6 31. Be7 {Accuracy: White = 50%, Black = 26%.} (31. Bc6+ $142 Bd7 32. Bxa8 Rxf6 33. Rb8+ {[%mdl 64] Skewer} Bc8 34. Bc6+ Kd8 35. Qa5#) 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.09"]
[Round "1.6"]
[White "Cotto Mux, Hector Vinicio"]
[Black "Mitkov, Nikola"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "1970"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,60,0,-5,6,-15,-12,-22,-1,-73,-11,-8,0,-18,-15,-26,-4,-16,-12,-37,0,4,26,5,26,26,42,0,1,-2,14,3,0,0,-8,-8,0,0,0,0,0,0,0,0,9,-605,-590]} 1. d4 d5 2. Nf3 Nf6 3. g3 Bf5 4. Bg2 e6 5. O-O Be7 6. b3 O-O 7. Bb2 c6 8. Nbd2 {[%cal Bb1d2,Bd2f3,Bf3e5][%mdl 32]} Nbd7 9. c4 {LiveBook: 38 Games} a5 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} (9... h6 10. Ne5 a5 11. Nxd7 Qxd7 12. Re1 Rfd8 13. a3 Rac8 14. c5 Ra8 15. b4 axb4 16. axb4 b6 17. Qb3 Qb7 18. Qc3 bxc5 19. bxc5 {0-1 (76) Golubov,S (2484)-Sarana,A (2562) Taganrog 2018}) 10. a4 h6 11. Rc1 Qb6 {The position is equal.} 12. Ne5 $146 (12. Ne1 $11) ({Predecessor:} 12. Ne1 Rfd8 13. Nd3 Rac8 14. Nf3 dxc4 15. Rxc4 Ne4 16. Nfe5 Nxe5 17. Nxe5 {0-1 (49) Kirsanov,V (2216)-Mannanov,R ICCF email 2014}) 12... Rfd8 (12... Nxe5 $17 13. dxe5 Ne4) 13. Ndf3 Nb8 14. c5 Qc7 15. Nd3 Be4 16. Qd2 Nbd7 17. Qf4 Qc8 18. Nfe5 Bxg2 19. Kxg2 Rf8 20. h4 Ra6 21. Ba3 Nxe5 22. Nxe5 Nd7 23. Nxd7 Qxd7 24. Rc3 Bd8 25. Bc1 Bc7 26. Qg4 f5 $36 {[%mdl 2048] Black fights for an advantage.} 27. Qg6 Rf6 {[%cal Bf8f6,Bf6g6,Bg6g4][%mdl 32]} 28. Qh5 Kh7 29. f4 Rg6 30. Bd2 $2 {[%mdl 8192] [#]} (30. Qf3 $11) 30... Rg4 $1 {Accuracy: White = 40%, Black = 38%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.09"]
[Round "1.7"]
[White "Torres Hernandez, Leslie Carolin"]
[Black "Gonzalez, Renier"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1934"]
[BlackElo "2451"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,48,83,87,62,75,47,47,49,55,34,76,66,86,0,0,0,-26,-32,-17,-94,-49,-220,-220,-333,-330,-415,-426,-517,-290,-653,-651,-1188,-1160,-29982,-29983,-3606,-1595]} 1. e4 d5 2. exd5 Qxd5 3. Nf3 c6 (3... g6 4. d4 Bg7 5. Be2 Nf6 6. O-O O-O 7. c4 Qd8 8. Nc3 Bg4 9. h3 Bxf3 10. Bxf3 Nc6 11. Be3 Ne8 12. d5 Ne5 13. c5 b6 14. Be2 bxc5 15. Bxc5 Nd6 16. Rc1 {½-½ (51) Matlakov,M (2738)-Artemiev,V (2696) Moscow 2017}) 4. c4 Qd8 5. Nc3 Bg4 6. Be2 {B01: Scandinavian Defence} Nf6 7. d4 e6 {LiveBook: 9 Games} 8. Be3 $146 {White is better.} ({Predecessor:} 8. O-O Be7 9. h3 Bh5 10. Bf4 O-O 11. Qd2 Nbd7 12. Rfd1 Nb6 13. Ne5 Bxe2 14. Qxe2 Re8 15. Rd3 Nfd7 16. Rad1 Nf8 17. b3 Ng6 {1-0 (58) Rajkovic,M (2303)-Savic,M (2574) Smederevska Palanka 2016}) 8... Be7 9. Ne5 Bxe2 10. Qxe2 O-O 11. O-O-O a6 12. g4 b5 13. Qf3 ({White should play} 13. g5 $16 Nfd7 14. f4) 13... bxc4 $11 14. Nxc4 Nd5 15. Ne4 Nd7 16. h4 (16. g5 $11 {remains equal.}) 16... Qb8 17. Ng5 $2 (17. Bg5 $15) 17... Qb5 $1 $19 {[%cal Rb5c4]} 18. b3 {[#]} (18. Qe2 $142) 18... a5 $1 {[%cal Ba6a5,Ba5a4,Ba4b3][%mdl 32]} 19. Qe4 {[%csl Gg5][%cal Re4h7]} N7f6 20. Qc2 Nb4 21. Qb1 $2 (21. a4 Nxc2 22. axb5 Nxe3 23. Nxe3) 21... a4 22. f3 {[#]} Nxa2+ $1 {[%mdl 576] Remove Defender} 23. Qxa2 axb3 24. Qe2 {[#]} Ra1+ {Accuracy: White = 25%, Black = 81%.} (24... b2+ $142 $1 {[%mdl 512]} 25. Qxb2 (25. Nxb2 Qxe2) 25... Qxc4+ 26. Kb1 Rfb8) 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.09"]
[Round "1.8"]
[White "Zaragatski, Ilja"]
[Black "Blanco, David E."]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2465"]
[BlackElo "1943"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,39,2,-16,12,18,70,70,139,72,128,155,290,289,294,268,442,441,438,162,170,167,232,227,672,643,924,919]} 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. Nc3 e6 6. d4 Nxd4 7. Nxd4 cxd4 8. Nb5 {LiveBook: 21 Games. A37: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3} (8. Ne4 d5 9. Qa4+ Kf8 10. Qa3+ Qe7 11. Nd6 Be5 12. Nxc8 Qxa3 13. bxa3 Rxc8 14. cxd5 exd5 15. Rb1 b6 16. Bxd5 {½-½ (31) Gordievsky,D (2622)-Van Foreest,J (2629) Wijk aan Zee 2018}) 8... d5 9. Qa4 {aiming for Nc7+.} Kf8 $146 (9... Bd7 $11) ({Predecessor:} 9... Bd7 10. Nd6+ Kf8 11. Qa3 Ne7 12. cxd5 exd5 13. Nxb7 Qc7 14. Nc5 Bb5 15. O-O Rc8 16. Nd3 Bxd3 17. exd3 Be5 18. Bh6+ Kg8 19. Rac1 Qd7 20. Qxe7 {1-0 (20) Trauth,M (2275)-Georges,S Lugano 1989}) 10. cxd5 $14 {Hoping for Qa3+.White is slightly better.} exd5 ({Black should play} 10... Ne7 $14) 11. Nxd4 (11. Bf4 $142 $1) 11... Qb6 (11... Bd7 $142 12. Qa3+ (12. Qb4+ Qe7 $14) 12... Qe7) 12. Be3 $16 {And now Nf5! would win.} Bd7 (12... Qd8 $16 13. Rc1 Ne7) 13. Qa3+ $18 (13. Qxd7 $6 Bxd4 14. Bxd4 (14. Bxd5 Ne7 $16) 14... Qxd4 $16) 13... Ne7 {[#]} 14. Nf5 $1 Qxb2 $2 (14... Qf6 {was called for.}) 15. Qxe7+ {[%mdl 64] Double Attack} Kg8 {[#] ( -> ...Bc3+)} 16. O-O $2 (16. Nh6+ $1 Bxh6 17. O-O Bxe3 18. Bxd5 (18. Qxe3 Bc6 $11) (18. Qxd7 Bb6 $14)) 16... Bxf5 17. Bxd5 $40 {[%csl Ge7][%cal Rd5f7][%mdl 192] Double Attack. White has strong attack.} Qf6 (17... Rf8 {was worth a try.} 18. Bc5 (18. Bxa7 Bf6 $16) 18... h5) 18. Qxb7 Rd8 $2 {[#]} (18... Rf8 19. Rfd1 (19. Bxa7 Bc8 $18) (19. Qxa7 Be6 $18) 19... Be6) 19. Bg5 $1 {[%mdl 512]} Bc8 (19... Qxg5 20. Qxf7#) 20. Qc7 {Accuracy: White = 55%, Black =  6%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "2.1"]
[White "Velarde Ramirez, Hiram de Jesus"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "A12"]
[WhiteElo "2151"]
[BlackElo "2661"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,72,8,-10,-2,-3,-1,-2,0,0,5,1,18,10,0,-61,-60,-39,-35,-48,-41,-72,-50,-56,1,-18,0,-35,-39,-46,-38,-51,-71,-45,-37,-45,0,7,48,-17,-20,-45,-18,-17,-25,-133,-86,-84,-83,-139,-125,-243,-254,-806,-787]} 1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. O-O Bf5 5. d3 e6 6. b3 Be7 7. Bb2 O-O 8. Nbd2 h6 9. c4 a5 10. a3 Na6 11. Ra2 {LiveBook: 8 Games. A12: English Opening: 1...c6 with b3 by White} (11. Qc2 Bh7 12. Bc3 Nd7 13. Qb2 Bf6 14. b4 Bxc3 15. Qxc3 axb4 16. axb4 Qf6 17. d4 Qe7 18. c5 Nc7 19. Rfc1 {½-½ (32) Bu,X (2710)-Zhou,W (2643) Zaozhuang 2015}) 11... Re8 12. Qa1 Bf8 $146 ({Predecessor:} 12... Bh7 13. Rc1 Rc8 14. Bh3 Nh5 15. Bc3 Bd6 16. cxd5 cxd5 17. Rac2 {1-0 (31) Percivaldi,M (2393)-Jessen,A (2071) Helsingor 2018}) 13. Ne5 {The position is equal.} Nc5 14. Bc3 Qc7 15. Rc1 Red8 16. cxd5 exd5 17. Rac2 (17. Nef3 $11) 17... a4 $15 18. Rb1 axb3 19. Nxb3 Ne6 20. Bb2 Ne8 (20... Qb6 $5 {[%cal Rb6b3]} 21. Nd4 Bxa3 $1 {[%mdl 512]} 22. Bxa3 (22. Nxf5 Bc5 $17) 22... Qxd4 $15) 21. a4 $1 Qe7 (21... Ra6 $15 22. a5 b5) 22. a5 N8c7 23. e4 Bh7 24. Qa4 Qe8 25. f4 f6 26. Ng4 {Bxf6! is the strong threat.} dxe4 27. dxe4 h5 (27... b5 $15 28. Qa2 Nd5) 28. Nf2 $11 Kh8 29. Re1 ({Better is} 29. f5 $14) 29... Na6 30. Bc3 Nac5 $36 {[%mdl 2048] Black has some pressure.} 31. Nxc5 Bxc5 32. Qb3 (32. Qc4 $11 {remains equal.}) 32... Bxf2+ 33. Rxf2 {aiming for e5.} Nc5 $1 {[%csl LRb3,LRe4]} 34. Qc4 ({White should try} 34. Qa3 Nd3 {[%mdl 64] Double Attack} 35. Re3 Nxf2 36. Kxf2) 34... Nd3 $17 {[%mdl 64] White must now prevent ...b5. Double Attack} 35. Rfe2 {[#]} (35. Re3 $17 Bg8 36. Qa4 Nxf2 37. Kxf2) 35... b5 $1 $19 {[%cal Rb5c4]} ({Resist} 35... Nxe1 36. Rxe1 Qg6 37. Qb4 $17) 36. axb6 $2 (36. Qa2 b4 37. Bd2) 36... Bg8 {[%mdl 64] Trapped Piece. Accuracy: White = 27%, Black = 57%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "2.2"]
[White "Almeida Quintana, Omar"]
[Black "Chinchilla, Alejandro Jose"]
[Result "1-0"]
[ECO "D80"]
[WhiteElo "2540"]
[BlackElo "2128"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,53,0,34,21,27,31,46,43,43,18,68,70,135,133,135,106,139,137,125,127,149,137,135,145,339,341,359,280,312,238,248,249,250,240,499,479,487,483]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Qb3 e6 6. Qa3 c6 {D80: Grünfeld: Unusual White 4th moves and 4 Bg5} 7. Nf3 a5 8. b3 Na6 9. Bd2 Nb4 {LiveBook: 8 Games. aiming for ...Nc2+.} 10. Rc1 O-O (10... b6 11. Be2 Bb7 12. O-O Ne4 13. Qb2 Nxd2 14. Qxd2 {½-½ (93) Rozum,I (2582)-Savchenko,B (2613) Khanty-Mansiysk 2016}) 11. Be2 Bd7 $146 ({Predecessor:} 11... b6 12. Na4 Na6 13. c5 bxc5 14. Nxc5 Nxc5 15. Rxc5 {1-0 (55) Krizsany,L (2385)-Wapner,J (2155) Budapest 1994}) 12. O-O Ne4 13. Be1 Qe7 14. Na4 {Threatens to win with Nb6.} c5 (14... dxc4 $14 15. Nb6 Ra6) 15. Nb6 $16 Rad8 16. cxd5 exd5 {[#]} 17. dxc5 $1 Bg4 18. Bxb4 axb4 19. Qxb4 d4 20. exd4 {[%cal Be3d4,Bd4d5][%mdl 32] Hoping for d5.} Ng5 $2 {[#]} (20... Bxf3 $16 21. Bxf3 Bxd4) 21. d5 $1 $18 h5 22. Nxg5 Bxe2 23. Qe4 Qxe4 24. Nxe4 Bxf1 25. Kxf1 ({Don't take} 25. Rxf1 $6 Be5) 25... f5 $2 (25... Be5 26. Nc4 Bf4) 26. Nd6 Bh6 27. Rc2 {Precision: White = 82%, Black = 34%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "2.3"]
[White "Barrientos, Sergio E"]
[Black "Perez, Fredy"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2494"]
[BlackElo "2110"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,57,25,27,39,35,36,39,40,39,29,29,29,28,32,9,66,67,82,75,87,79,86,87,85,91,83,59,57,49,130,141,216,219,367,356,340,335,463,459]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O c5 5. c4 Nc6 6. d4 cxd4 7. Nxd4 O-O 8. Nc3 Nxd4 9. Qxd4 d6 10. Qd2 a6 11. b3 {LiveBook: 28 Games. A39: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3 Nf6 6 0-0 0-0 7 d4} Qc7 12. Bb2 Bd7 13. Rac1 {White is slightly better.} Rac8 14. Rfd1 Rfd8 15. h3 Bc6 $146 ({Predecessor:} 15... b6 16. g4 Bc6 17. g5 Nh5 18. Bxc6 Qxc6 {1-0 (38) Costa,C (2204)-Ribeiro,J (1914) Florianopolis 2017}) 16. e4 {[%cal Be2e4,Be4d5][%mdl 32]} Qa5 17. a3 Qh5 ({Better is} 17... b5 $11) 18. Nd5 $14 Nxd5 19. exd5 {[#] And now Bxg7 would win.} Bxb2 20. Qxb2 Bd7 21. Re1 Re8 22. h4 Qh6 23. b4 Qg7 24. Qd2 Qf6 (24... b6 $14) 25. c5 $16 {Black must now prevent c6.} Rc7 (25... Ba4 $16 {might work better.} 26. c6 bxc6) 26. c6 $18 bxc6 (26... Bg4 $142 27. a4 Rb8) 27. dxc6 Be6 28. a4 Rb8 {[#]} 29. b5 $1 {[%mdl 512] Accuracy: White = 91%, Black = 49%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "2.4"]
[White "Gongora Montes, Benjamin"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "2143"]
[BlackElo "2512"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,48,-9,-21,-74,-65,-66,-79,-83,-81,-117,-114,-98,-81,-72,-88,-75,-80,-141,-139,-142,-145,-138,-144,-147,-145,-104,-118,-126,-118,-126,-115,-183,-160,-441,-429]} 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O 5. e4 {[%cal Be2e4,Be4e5][%mdl 32]} d5 6. Bd3 c5 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} (6... dxe4 7. Nxe4 Nxe4 8. Bxe4 Nd7 9. O-O h6 10. Be3 e5 11. Nxe5 Nxe5 12. dxe5 Bxe5 13. Qxd8 Rxd8 14. Bxh6 Bxb2 15. Rab1 Bd4 16. Bxb7 Bxb7 17. Rxb7 {1-0 (34) Bu,X (2711)-Gupta,A (2627) Liaocheng 2017}) 7. e5 Nfd7 8. c3 Nc6 {LiveBook: 3 Games. The position is equal.} 9. h4 $146 (9. O-O $11 {keeps the balance.}) ({Predecessor:} 9. O-O Qb6 10. Qb3 Qxb3 11. axb3 cxd4 12. cxd4 f6 13. exf6 exf6 14. Bf4 {0-1 (38) Vilela de Acuna,J (2328)-Van Foreest,J (2468) Paramaribo 2014}) 9... cxd4 10. cxd4 f6 11. exf6 Nxf6 12. O-O Ng4 13. Re1 Qd6 14. Nf1 e5 15. dxe5 Ncxe5 16. Be2 {[#]} ({Better is} 16. Bc2) 16... Nxf2 $1 $17 {[%mdl 512]} 17. Kxf2 {aiming for Kg1.} Ng4+ {[%mdl 64] Discovered Attack} 18. Kg1 {[#] Strongly threatening Ne3.} Qb6+ $1 19. Ne3 Nxe3 20. Bxe3 Qxe3+ 21. Kh1 Qc5 22. Rc1 Qa5 23. b4 {[#]} (23. Ng5 $17 {keeps fighting.} h6 24. Nf3) 23... Qd8 $1 $19 {And now ...Rxf3! would win.} ({But not} 23... Qxa2 24. Rc7 $15) ({Worse is} 23... Qxb4 24. Qxd5+ Kh8 25. Bc4 $11) 24. Rc5 $2 {[#]} (24. Qd2 $17 {was worth a try.}) 24... Rxf3 $1 {[%mdl 512] Accuracy: White = 18%, Black = 88%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "2.5"]
[White "Reyes Najera, Carlos A."]
[Black "Strikovic, Aleksa"]
[Result "0-1"]
[ECO "A55"]
[WhiteElo "2124"]
[BlackElo "2490"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,84,56,67,0,10,0,-5,-13,6,-13,-11,-19,-27,-23,-9,-5,0,-7,-8,-43,0,-12,0,-37,-31,-43,-38,-47,-42,-60,-56,-70,-72,-76,-66,-85,-76,-78,-84,-87,-87,-81,-79,-87,-81,-79,-78,-88,-70,-79,-72,-75,-70,-107,-97,-195,-184,-578,-593,-497,-315,-654,-646,-587,-527,-617,-590,-874,-755,-848,-749,-1116,-993]} 1. d4 d6 2. Nf3 Nd7 3. c4 e5 4. Nc3 Ngf6 5. e4 Be7 6. Be2 O-O 7. O-O c6 {LiveBook: 2365 Games} 8. dxe5 {A55: Old Indian Defence with Nf3 and e4} (8. Qc2 $14) (8. Re1 Qe8 9. Bf1 Bd8 10. h3 Qe7 11. Be3 Ba5 12. Nd2 Rd8 13. Qc2 Nf8 14. d5 h6 15. a3 Bb6 16. b4 Bxe3 17. Rxe3 {0-1 (65) Jakovenko,D (2726)-Jobava,B (2706) Loo 2014}) 8... dxe5 $11 9. h3 Qc7 10. Be3 {The position is equal.} Bc5 $146 ({Predecessor:} 10... Nc5 11. Qc2 Ne6 12. Rad1 Bc5 13. Bxc5 Nxc5 14. Rd2 h6 {0-1 (62) Omercic,M (2066)-Avdic,M (2221) Tuzla 2015}) 11. Bxc5 Nxc5 12. Qc2 a5 13. Rfd1 Be6 14. b3 Rfd8 15. Rxd8+ Rxd8 16. Rd1 Ra8 17. Bf1 Nfd7 {[%cal Bf6d7,Bd7f8,Bf8e6,Be6d4][%mdl 32]} 18. Qd2 f6 19. Ne1 Bf7 20. Nc2 Nf8 21. Qe3 Nfe6 22. g3 Rd8 23. Rd2 Rd6 24. Bg2 Qd8 25. Rxd6 Qxd6 26. Kh2 Nd4 27. Ne1 Bh5 28. h4 Kf8 29. Bh3 Ke7 30. f4 Bf7 31. Bf1 Nde6 {[%cal Re5f4]} 32. fxe5 fxe5 33. Nf3 Bh5 34. Be2 (34. Ne1 $17) 34... Bxf3 $19 35. Qxf3 $2 (35. Bxf3 Qd4 36. Nd1) 35... Qd2 36. Kh3 h5 {Hoping for ...g5.} 37. Nb1 $2 (37. Nd5+ Kd6 38. a3 Nxb3 {[%mdl 64] Deflection} 39. Qxb3 Qxe2 40. Qxb7 Qg4+ 41. Kh2 cxd5 42. c5+ {[%mdl 64] Decoy} Kxc5 43. Qxd5+ Kb6 44. Qd6+ Kb7 45. Qxe5) 37... Qxa2 {[%mdl 64] [#] Double Attack. Black is clearly winning.} 38. Nc3 Qd2 39. Nb1 Qe1 40. Nc3 g6 41. Kg2 Qd2 42. Kf2 {[#]} Qxc3 $1 {[%mdl 512] Accuracy: White = 21%, Black = 54%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "2.6"]
[White "Mitkov, Nikola"]
[Black "Cardenas Carbajal, Nilson"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2477"]
[BlackElo "2095"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,73,-16,35,18,39,33,42,42,42,35,36,42,70,42,38,50,77,70,79,68,153,155,148,152,153,144,166,115,114,124,122,109,112,109,105,45,131,112,122,111,125,117,273,275,247,268,258,264,372,361,371,371,506,514,500,448,610,587,624,616,29979,29981]} 1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bb5+ Bd7 6. Bc4 {B23: Closed Sicilian: Lines without g3} Nc6 7. d3 Nf6 {LiveBook: 3 Games} ({Better is} 7... Na5 $11) 8. e5 $14 {White is slightly better.} dxe5 9. fxe5 Nh5 10. Bxf7+ $1 Kxf7 11. e6+ $1 Bxe6 $146 {And now ...h6 would win.} ({Predecessor:} 11... Kg8 12. exd7 Qxd7 13. Be3 b6 14. Qd2 h6 15. O-O-O Kh7 16. Ne4 Rhf8 17. Kb1 Nf6 18. h4 Nxe4 19. dxe4 Qxd2 20. Rxd2 {½-½ (20) Perunovic,M (2606)-Seyb,A (2425) Biel 2017}) 12. Ng5+ Kg8 {White must now prevent ...Bd7.} 13. Nxe6 Qd6 14. Nxg7 Kxg7 15. Be3 $1 b6 16. Qd2 (16. Ne4 Qe5 $11) 16... Nf6 (16... h6 $14) 17. Bh6+ $16 Kf7 18. O-O-O Rhe8 19. Rde1 Rad8 20. Bf4 ({White should play} 20. h3 $18) 20... Qd7 21. Rhf1 Kg8 22. Bg5 Rf8 23. Bh6 Rf7 24. Rf4 (24. h3 $16) 24... a5 {[#]} (24... Nd4 $14) 25. Ref1 $1 a4 26. Nxa4 Nd4 {[#]} 27. Nc3 $1 ({Much weaker is} 27. Nxb6 $6 Qa7 $14) 27... Qa7 $2 (27... Nf5 $16) 28. g4 $18 {[%cal Bg2g4,Bg4g5][%mdl 32]} b5 29. g5 b4 30. Nb1 Ne6 (30... Qxa2 $142 31. gxf6 Rxf6 32. Rxf6 exf6 33. Rxf6 Qd5) 31. R4f3 {[%mdl 64] Pin} ({Weaker is} 31. gxf6 Nxf4 32. Qxf4 exf6 $18) 31... Nd4 32. R3f2 {[%mdl 64] Pin} ({Less strong is} 32. gxf6 Nxf3 33. Rxf3 exf6 $16) 32... c4 33. gxf6 exf6 34. Be3 Re7 35. Bxd4 Rxd4 36. Rxf6 {Strongly threatening Qh6.} cxd3 37. Qh6 {Accuracy: White = 84%, Black = 36%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "2.7"]
[White "Gonzalez, Renier"]
[Black "Ramirez Marino, Richard Daniel"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2451"]
[BlackElo "2080"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,81,10,0,41,41,60,59,61,63,75,74,77,56,61,15,50,20,8,21,80,35,43,37,21,27,24,19,38,22,34,23,23,23,23,23,24,23,34,37,29,0,5,0,25,0,92,108,122,91,239,288,285,279,285,279,281,281,266,261,539,537,536,532]} 1. d4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 cxd4 5. Nxd4 Nc6 6. Nb3 Nf6 7. e4 O-O 8. Nc3 d6 9. h3 Be6 10. O-O a5 11. a4 {LiveBook: 23 Games} Rc8 {A04: Unusual lines after 1 Nf3 and King's Indian Attack} 12. Nd5 Nb4 $146 ({Predecessor:} 12... Ne5 13. Nd4 Bd7 14. Re1 Re8 15. c3 e6 16. Ne3 Qb6 17. Qe2 Red8 18. f4 Nc6 19. Nb5 {1-0 (63) Petrosian,T (2539)-Alekseev,E (2604) Cochin 2004}) 13. c3 Nbxd5 {White is slightly better.} 14. exd5 Bd7 15. Re1 Re8 16. Be3 Qc7 17. Bd4 Ra8 18. Qe2 e5 19. dxe6 Bxe6 (19... Rxe6 $11 {keeps the balance.} 20. Be3 Re5) 20. Qd1 Bc4 {[#] Threatens to win with ...Rxe1+.} 21. Rxe8+ Rxe8 22. Nd2 Be6 23. Qf1 Bd7 24. Qc4 Bc6 25. b4 {Bxf6 is the strong threat.} d5 26. Qd3 Bd7 27. bxa5 Qxa5 28. Nb3 $36 {[%mdl 2048] White has good play.} Qc7 29. a5 Qc8 30. g4 Bc6 31. Rc1 Qe6 32. Nc5 Qe2 (32... Qe7 $11 {remains equal.}) 33. Qxe2 $16 Rxe2 34. c4 Ne4 (34... dxc4 $16 35. Bxc6 (35. Rxc4 Nd5 $14) 35... bxc6) 35. Bxg7 $18 Kxg7 36. cxd5 Bxd5 37. Bf3 Nxc5 38. Bxe2 Nb3 39. Rc3 Be6 $2 {[#]} (39... Kf6 40. f4 Ke6) 40. Rxb3 $1 {[%mdl 512]} Bxb3 41. Bf3 {Accuracy: White = 60%, Black = 40%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "2.8"]
[White "Juarez Flores, Roberto"]
[Black "Zaragatski, Ilja"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "2109"]
[BlackElo "2465"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,66,49,55,59,38,60,36,44,15,29,0,7,0,0,0,0,-62,-52,-66,-38,-45,10,-44,-33,-66,-63,-73,-63,-70,-68,-110,-85,-81,-79,-264,-240,-216,-221,-223,-220,-263,-229,-237,-229,-566,-556]} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6 d6 6. Nc3 Qxb6 7. Nf3 {[%cal Bg1f3,Bf3d2,Bd2c4][%mdl 32]} g6 8. e4 Bg7 9. Nd2 O-O 10. a4 {[%cal Ba2a4,Ba4a5][%mdl 32] A57: Benko/Volga Gambit} Nbd7 11. a5 Qa7 12. Nc4 {LiveBook: 8 Games. White is slightly better.} Ne8 13. Be2 Nc7 14. Na4 Rb8 15. Nab6 {[#]} Na8 $146 {[%cal Rd7b6]} ({Predecessor:} 15... Nb5 16. O-O Nd4 {½-½ (69) Cruz Lledo,P (2232)-Pap,M (2521) La Roda 2010}) 16. Na4 Ne5 17. Ncb6 Nxb6 18. Nxb6 Nd7 19. Nxc8 ({Better is} 19. Nc4 $11) 19... Rfxc8 $15 20. Qc2 Rb4 21. O-O Rcb8 (21... Qb7 $15) 22. Ra2 ({White should play} 22. Rb1 $11) 22... Bd4 23. Kh1 Qb7 {[%cal Rd4b2]} 24. h3 Nf6 25. Bd3 Qc8 ({Reject} 25... Bxb2 26. Bd2 $11) 26. Rd1 e6 27. dxe6 Qxe6 28. Ra4 $2 {[#]} (28. b3 $17) 28... Rxa4 29. Qxa4 Nxe4 30. Bxe4 Qxe4 31. Be3 Rb4 32. Qd7 Bxe3 33. Re1 $2 {[#]} (33. fxe3 Rxb2 34. Rg1) 33... Rxb2 {Precision: White = 27%, Black = 67%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "3.1"]
[White "Mareco, Sandro"]
[Black "Gonzalez, Renier"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2661"]
[BlackElo "2451"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,99,25,26,31,24,33,25,32,33,36,34,37,36,50,38,50,26,64,63,57,49,52,12,16,0,0,0,28,10,20,9,13,9,9,9,79,79,97,90,90,91,101,99,100,103,100,104,240,240,240,240,240,240,240,233,234,228,237,218,218,218,328,328,352,262,234,240,241,219,252,254,312,252,427,440,413,414,525,517,706,698,1413,1322]} 1. Nf3 Nf6 2. c4 c6 3. g3 d5 4. Bg2 e6 5. b3 Nbd7 6. Bb2 Bd6 7. d4 b6 {E01: Catalan: Early deviations} (7... O-O 8. O-O Qe7 9. Nc3 dxc4 10. bxc4 e5 11. e3 Ba3 12. Bxa3 Qxa3 13. Qb3 Qxb3 14. axb3 exd4 15. exd4 Rd8 16. Rfd1 Nb6 17. d5 cxd5 {1-0 (50) Kanmazalp,O (2471)-Spalir,J (2363) Budapest 2018}) 8. O-O Bb7 9. Nc3 O-O 10. Nd2 {LiveBook: 3 Games} Re8 11. e4 dxe4 12. Ndxe4 Nxe4 13. Nxe4 Be7 14. Qc2 Nf6 15. Rad1 Rc8 $146 ({Predecessor:} 15... h6 16. Nc3 Qc7 17. Rd2 Rad8 {½-½ (43) Karabakhtsian,A (2287)-Aslakhanov,T (2066) Belorechensk 2007}) 16. Rfe1 Nxe4 17. Bxe4 g6 18. a3 Bf6 19. b4 Bg7 20. a4 Re7 21. Re3 Rd7 22. Red3 Qe7 23. Bc3 Rcd8 24. c5 Rc8 25. Qb3 Ba6 26. R3d2 b5 {[#]} (26... Qd8 $11 {keeps the balance.}) 27. a5 $1 $16 Rcc7 28. Bb2 {[%cal Bc3b2,Bb2c1,Bc1f4,Bf4e5][%mdl 32]} Bb7 29. Rd3 a6 30. Bc1 Rc8 31. Bf4 Rcd8 {[%cal Rd7d4]} 32. Qc3 Rd5 (32... Qf8 $16) 33. Bxd5 $18 Rxd5 34. Be5 f6 35. Bd6 Qf7 36. Re1 Bc8 37. Rde3 h5 38. h4 Bh6 39. Re4 Qd7 (39... Qe8 $142 40. Bf4 Bf8) 40. Bf4 ({Don't take} 40. Rxe6 Qxe6 41. Rxe6 Bxe6 $18) 40... Bf8 41. Qe3 Kf7 42. Bh6 Be7 43. Qf4 Qb7 44. Qf3 Bd7 45. Be3 Kg7 $2 (45... Qb8 {was called for.} 46. Bf4 Qc8) 46. Qf4 {Black must now prevent Qh6+.} g5 47. hxg5 Rxg5 48. Qh4 {White is clearly winning.} Rd5 {[#]} 49. Re5 $1 {[%mdl 576] Pin} Be8 (49... Rxe5 50. dxe5) 50. Rxe6 {Accuracy: White = 80%, Black = 36%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "3.2"]
[White "Calderin Gonzalez, Roberto"]
[Black "Almeida Quintana, Omar"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "2427"]
[BlackElo "2540"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,82,49,0,0,0,0,0,0,0,0,0,0,0,1,-5,0,0,0,0,0,0,0,-19,-16,-6,0,0,0,0,27,-65,-64,-106,-111,-100,-99,-253,-255,-294,-316,-353,-335,-316,-300,-274,-5872,-5859,-5859,-5173,-5173,-4996,-4802,-2887,-2668,-29962,-29966,-29965,-29967,-29967,-29964,-29966,-4727,-29983,-29984,-29984,-29985]} 1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 Nf6 5. Nf3 O-O 6. Be2 Na6 7. O-O e5 8. Bg5 h6 9. Bh4 Qe8 10. Re1 {LiveBook: 10 Games. E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves} (10. Bxf6 $5 Bxf6 11. c5 $14) (10. Bxf6 Bxf6 11. c5 c6 12. cxd6 exd4 13. Nxd4 Nc5 14. Nb3 Nxb3 15. axb3 Be5 16. f4 Bxc3 17. bxc3 Qxe4 18. Qd2 Bf5 19. Bf3 {½-½ (30) Mozharov,M (2539)-Afanasiev,N (2364) Moscow 2018}) 10... exd4 11. Qxd4 g5 12. Bg3 {The position is equal.} Nh5 13. Qd2 Nxg3 14. hxg3 Nc5 15. Bf1 $146 ({Predecessor:} 15. Bd3 a5 16. Bc2 Be6 17. Nd4 Qd8 {1-0 (34) Milov,V (2410)-Lamoureux,C (2345) Paris 1993}) 15... a5 16. Nd4 Qd8 17. Nf5 Bxf5 18. exf5 c6 19. Rad1 Qf6 20. Qxd6 Qxd6 21. Rxd6 {Hoping for f6.} Bxc3 22. bxc3 Rfe8 23. Red1 Kg7 24. f6+ ({White should try} 24. g4 $11) 24... Kg6 $15 25. Bd3+ Nxd3 26. R6xd3 $17 {[%mdl 4096] Endgame KRR-KRR} Re2 27. Rd7 $2 {[#]} (27. R3d2 $17 {was called for.} Rae8 28. Kf1) 27... Rxa2 $19 28. Rxb7 a4 {[%cal Ba5a4,Ba4a3,Ba3a2][%mdl 32]} 29. Rdd7 a3 ({Inferior is} 29... Kxf6 30. Rxf7+ Ke5 31. Rbd7 $11) 30. Rxf7 {intending Rbe7.} Rb2 31. Ra7 Rxa7 32. Rxa7 {KR-KR} a2 33. f7 Kg7 34. Kh2 g4 35. c5 h5 {[%cal Bh6h5,Bh5h4,Bh4h3][%mdl 32]} 36. c4 Kf8 37. Ra3 Rxf2 38. Kg1 Rc2 39. Ra7 h4 40. Kh2 h3 $1 {[%cal Rh3g2]} 41. Ra6 Kxf7 {Accuracy: White = 27%, Black = 90%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "3.3"]
[White "Juarez Flores, Carlos A."]
[Black "Barrientos, Sergio E"]
[Result "0-1"]
[ECO "D46"]
[WhiteElo "2377"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "154"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,154,18,42,-8,0,-25,-20,-20,-12,-64,21,-50,-31,-35,-12,-14,-8,-9,0,-7,-16,-2,0,-14,0,0,-4,-18,-14,-13,-14,-17,0,-43,-47,-39,-12,-42,-32,-26,0,-2,0,0,0,-6,0,0,0,0,0,-12,-12,-16,-23,-31,-31,-31,-35,-38,-31,-25,-12,-19,0,-16,0,0,0,-16,-16,-24,-24,-27,-16,-76,0,0,0,-22,-8,-93,-91,-93,-92,-61,-72,-99,-8,-8,-8,-15,-6,-15,0,0,0,-58,-53,-58,-33,-142,-142,-142,-99,-99,-99,-99,-106,-106,-55,-39,0,-114,-14,-19,0,0,0,-55,0,0,0,-1755,-1433,-4340,-2469,-29977,-29978,-29978,-29979,-29972,-29972,-29984,-29985,-29985,-29986,-29986,-29983,-29988,-29971]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd2 c6 7. Bd3 Nbd7 8. O-O Qe7 {LiveBook: 16 Games} 9. Qb3 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran} (9. Qc2 Bd6 10. cxd5 exd5 11. Rfe1 Qd8 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 Nf6 15. Bg5 h6 16. Bh4 Be7 17. Bh7+ {0-1 (63) Hoffmann,M (2479)-Epishin,V (2579) Nuremberg 2012}) 9... Bd6 10. e4 {And now e5 would win.} dxc4 11. Qxc4 $146 {The position is equal.} ({Predecessor:} 11. Bxc4 e5 12. d5 b5 13. Be2 Nc5 14. Qc2 b4 15. Na4 Nxa4 16. Qxa4 cxd5 17. exd5 {0-1 (38) Porreca,G-Rellstab,L Dubrovnik 1950}) 11... e5 $1 12. Rfe1 (12. Ne2 $11) 12... Re8 (12... exd4 $1 $15 13. Ne2 c5) 13. h3 (13. Ne2 $11) 13... exd4 $1 $15 14. Qxd4 Bc5 15. Qa4 Ne5 16. Nxe5 Qxe5 17. Be3 $1 Bxe3 18. Rxe3 Be6 19. Rae1 Nh5 20. Bf1 Nf4 21. Rd1 a5 22. Qc2 Red8 23. Ree1 h5 24. Rxd8+ Rxd8 25. Rd1 Rd4 26. a3 c5 27. h4 Qf6 28. Rxd4 cxd4 29. Nb5 d3 30. Bxd3 Qxh4 31. Bf1 Qg5 32. Nd4 h4 33. Nf3 Nh3+ 34. Kh1 Qf4 35. gxh3 Qxf3+ {[%mdl 64] Double Attack} 36. Bg2 Qf4 37. Kg1 g5 38. Qc3 b6 39. Qd4 b5 40. Qd8+ Kg7 41. Qxa5 Qc1+ {[%mdl 64] Double Attack} 42. Kh2 Qxb2 43. Qb6 Qe5+ 44. Kg1 Bc4 45. Qd8 (45. Qe3 $11) 45... f6 (45... Qa1+ $1 $17 46. Kh2 Qe5+ 47. Kg1 Qa1+ 48. Kh2 Qe5+ 49. Kg1) 46. Qd7+ $11 Kg6 47. Qd1 Qc3 48. Qf3 (48. Bf1 $1 $11 {remains equal.}) 48... Qe1+ $17 49. Kh2 Be6 50. Bh1 Kf7 51. Bg2 Qa1 (51... Ke7 $17) 52. Qe3 $11 Qe5+ 53. Kg1 Kg6 54. Bf1 Bc4 (54... Qa1 $5 55. Kg2 $8 Qb2 $11) 55. Be2 Be6 56. Bg4 ({White should try} 56. Bf1 $11) 56... Bxg4 $15 57. hxg4 {[%mdl 4096] Endgame KQ-KQ} Qa1+ 58. Kg2 (58. Kh2 $1 $15) 58... Qd1 $17 59. f3 Qd6 60. Qb3 Kg7 {Threatens to win with ...Qg3+.} 61. Qe3 Qg3+ 62. Kf1 {[#]} h3 ({Better is} 62... Qc7 $1 $17 63. Kg1 Kh6) 63. Qf2 $1 $15 {[%cal Rf2g3]} Qd6 {...Qd1+ is the strong threat.} 64. Kg1 (64. Qa7+ $1 $11 {was the only way to keep the balance.} Kh6 65. Qa8) 64... Qxa3 ({Black should play} 64... Kf7 $17 65. Qe2 Ke6) 65. Kh2 $11 Qc3 66. Kxh3 b4 {Hoping for ...b3.} 67. Kg2 (67. Qa7+ $1 $11 Kg8 68. Kg2) 67... b3 (67... Kf7 $1 $15 68. Qa7+ Ke6) 68. Qa7+ $1 Kf8 {White must now prevent ...Ke8.} 69. Qb8+ $2 {[%mdl 8192] [#]} (69. Qd7 $11) 69... Ke7 $1 $19 70. e5 fxe5 71. Qb7+ Kd6 {Black mates.} 72. Qb6+ Kd5 73. Qd8+ Kc4 74. Qg8+ Kd3 75. Qg6+ Ke2 76. Qa6+ Qd3 77. Qb7 Kd1 {Accuracy: White = 48%, Black = 40%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "3.4"]
[White "Cuenca Jimenez, Jose Fernando"]
[Black "Cu Hor, Winston Darwin"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "2512"]
[BlackElo "2320"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,87,33,27,54,48,66,71,72,71,59,70,94,74,75,72,69,65,89,89,100,55,61,32,76,45,44,22,18,28,34,12,12,14,37,30,40,35,65,52,68,72,64,42,70,51,61,86,80,60,123,121,142,154,216,195,313,299,398,256,303,302,320,318,693,673,1264,727]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3 g6 7. d4 cxd4 8. Nxd4 Bg7 9. Be3 Nf6 10. f3 Rc8 11. Nde2 O-O 12. O-O {LiveBook: 32 Games} Qe6 $146 {B52: Sicilian: Moscow Variation with 3...Bd7} ({Predecessor:} 12... Rfd8 13. Rc1 e6 14. Bg5 Qc7 15. Qd2 Qa5 16. Rfd1 Rd7 17. b3 a6 18. Kh1 h5 19. Na4 Qc7 20. Qe3 Rb8 21. Nb6 Rdd8 22. Rd2 Kh7 23. Rcd1 Ne5 24. a4 Ned7 25. a5 Ne5 26. Qf4 Ne8 {Movsesian,S (2721)-Andriasian,Z (2585) Warsaw 2010}) 13. b3 Nd7 14. Rb1 f5 {White is better.} 15. Qd2 Nf6 {[%cal Rf5e4]} 16. exf5 gxf5 17. Rfe1 Qf7 18. Rbd1 a6 19. Bh6 Bxh6 20. Qxh6 Kh8 21. Qe3 Rg8 22. Nd4 {aiming for Nxc6.} Qg6 {[%csl Gg8][%cal Rg6g2] [#]} 23. Rd2 (23. Re2 {is more complex.} f4 24. Qe6 Nxd4 25. Rxd4 Rc5 26. Rdd2) 23... f4 24. Qd3 Qxd3 25. Rxd3 {Strongly threatening Nxc6.} Ne5 26. Rdd1 b5 $1 27. Nce2 bxc4 28. Nxf4 cxb3 29. axb3 Rb8 30. Nfe6 Nh5 31. Re3 Ng7 32. Nxg7 Rxg7 33. f4 Ng4 34. Re6 Rf7 35. g3 $36 {[%mdl 2048] White has good play.} Nf6 ({Black should try} 35... h5 $14) 36. Nc6 $16 Rxb3 37. Nxe7 a5 (37... d5 $16 38. Nxd5 Ng4) 38. Rdxd6 $18 {[#] White wants to mate with Rd8+.} Rb1+ (38... h5 $142 39. Ng6+ (39. Rxf6 Rxe7 40. Rh6+ Kg7 $16) 39... Kg7) 39. Kg2 {Threatening mate with Rd8+.} Kg7 40. Ra6 {Hoping for Nf5+.} Rb2+ 41. Kh3 Rb5 42. g4 h6 $2 (42... Nd7 43. Nf5+ Rbxf5) 43. Nf5+ Kg6 44. Nxh6 {Accuracy: White = 61%, Black = 49%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "3.5"]
[White "Strikovic, Aleksa"]
[Black "Galvez Dastin, Eduardo"]
[Result "1-0"]
[ECO "B18"]
[WhiteElo "2490"]
[BlackElo "2239"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,69,-26,-31,-62,0,0,0,0,0,0,0,0,8,5,5,2,7,7,13,2,2,2,2,2,57,50,59,54,54,56,63,10,10,10,9,12,10,4,83,87,118,117,153,158,158,161,378,364,407,403,400,391,540,532]} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nh3 Nf6 7. Nf4 Nbd7 {B18: Classical Caro-Kann: 4...Bf5 sidelines} 8. h4 e5 9. Nxg6 hxg6 {LiveBook: 5 Games. Black has an edge.} 10. Qe2 Be7 $146 (10... Bd6 $15) ({Predecessor:} 10... Qe7 11. Bg5 exd4 12. O-O-O Qxe2 13. Bxe2 Bc5 14. Bc4 Kf8 15. Rhe1 {½-½ (25) Yemelin,V (2574)-Bareev,E (2711) Sochi 2004}) 11. dxe5 $11 Qa5+ 12. Bd2 Qxe5 13. O-O-O Qxe2 14. Bxe2 Bc5 15. h5 $36 {[%mdl 2048] White is pushing.} gxh5 16. Nxh5 Nxh5 17. Bxh5 Nf6 18. Rhe1+ Kf8 19. Bf3 Bxf2 20. Re5 Re8 (20... Rh4 $11) 21. Bb4+ $14 Kg8 22. Rxe8+ Nxe8 23. Rd8 Rh1+ 24. Bd1 (24. Kd2 $1 $14 Be1+ 25. Kd3 Bxb4 26. Rxe8+ Bf8 27. Rb8) 24... Be3+ $11 25. Bd2 Bxd2+ 26. Kxd2 {[%mdl 4096] Endgame KRB-KRN} Kf8 27. Rb8 Rh4 (27... b6 $11 {remains equal.}) 28. Rxb7 $16 Rd4+ 29. Kc1 a5 30. Bf3 Nd6 31. Rd7 {[#] aiming for c3.} c5 $2 (31... Nf5 32. Ra7 (32. Bxc6 Rxd7 33. Bxd7 Ne3 $16) 32... a4) 32. c3 $18 Rd3 33. Kc2 c4 34. b3 cxb3+ 35. axb3 {Accuracy: White = 77%, Black = 34%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "3.6"]
[White "Garcia, Douglas"]
[Black "Mitkov, Nikola"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2177"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,124,0,0,-20,0,-1,2,4,15,13,11,-25,-24,-41,-33,-129,-66,-83,-33,-58,18,18,12,10,46,20,23,0,0,0,0,0,0,0,11,0,23,35,40,39,34,15,36,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,-4,-5,-5,-22,-18,-26,-22,-18,0,0,0,0,-7,0,0,-8,-8,-8,-6,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-26,-28]} 1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. cxd5 exd5 5. Nf3 Nf6 6. Bg5 h6 7. Bxf6 Qxf6 8. a3 Bxc3+ 9. bxc3 O-O {LiveBook: 8 Games. D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4)} 10. Qb3 (10. e3 c5 11. c4 dxc4 12. Bxc4 Nc6 13. dxc5 Bg4 14. O-O Rad8 15. Qc2 Bxf3 16. gxf3 Ne5 17. f4 Nf3+ 18. Kg2 Qc6 {0-1 (26) Hole,O (2333)-Tari,A (2581) Norway 2017}) 10... Qb6 11. Nd2 Be6 {The position is equal.} 12. e3 $146 ({Predecessor:} 12. Rb1 Nd7 13. e3 Bf5 14. Rc1 Qd6 15. Be2 c5 16. Bf3 {0-1 (70) Khazhomia,S (2125)-Zawadzka,J (2359) Kavala 2012}) 12... Nd7 13. Bd3 Rfc8 14. Rb1 c5 {aiming for ...Qxb3.} 15. Qa4 Qc7 16. Ke2 {[#]} (16. Rc1 $15) 16... Bg4+ (16... a6 $1 $17 17. Nf3 b5) 17. Nf3 $15 Nb6 18. Qa5 Nd7 (18... Qd6 $15) 19. Qxc7 $11 Rxc7 20. h3 Bxf3+ (20... Be6 {is more complex.} 21. Rhc1 b6 22. a4 Rac8 23. a5 bxa5 24. Ra1 cxd4 25. Nxd4 Rxc3 26. Rxc3 Rxc3 27. Rxa5 Nc5) 21. Kxf3 Nb6 22. Rhc1 Rac8 23. Bf5 Rd8 24. Bd3 Rdc8 25. Bf5 Rd8 26. Bd3 cxd4 27. cxd4 Rdc8 28. Rxc7 Rxc7 $14 {[%mdl 4096] Endgame KRB-KRN} 29. Rb3 Kf8 30. e4 Ke7 31. Ke2 dxe4 32. Bxe4 Kd6 33. Kd2 Nc4+ 34. Kd3 b6 35. a4 g6 36. g4 Ke6 37. Rb5 {[#] Threatens to win with Bd5+.} Nd6 38. Re5+ Kd7 39. Bd5 Rc1 40. Bb3 Rb1 41. Kc2 Rf1 42. Re2 Rh1 43. Re3 Rf1 44. Rf3 f5 45. Kd3 Rb1 46. Kc2 Ra1 47. Re3 Rf1 48. Rf3 Rg1 49. Re3 Rg2 50. Be6+ Kd8 51. Rf3 {[%cal Rg4f5]} fxg4 52. hxg4 Ne4 53. Kd3 $1 {[%cal Rd3e4]} Ng5 54. Rf8+ Ke7 55. Bd5 Rxg4 56. Ra8 Kd6 57. Rd8+ Kc7 58. Rg8 Nh3 59. Bf3 Rg1 60. Rg7+ Kd6 61. Rxa7 Ra1 {Strongly threatening ...Ra3+.} 62. Rb7 Ra3+ {[%mdl 32768] Accuracy: White = 60%, Black = 68%. . Loss on time!?} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "3.7"]
[White "Garcia Fuentes, Sergio Miguel"]
[Black "Gonzalez Zamora, Juan Carlos"]
[Result "1/2-1/2"]
[ECO "A43"]
[WhiteElo "2155"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,110,16,14,18,21,-11,17,17,13,0,0,0,40,14,15,-1,6,-14,0,-32,-21,-55,-21,-10,0,0,0,0,0,0,0,0,0,0,0,2,30,31,71,29,40,12,0,2,75,75,66,61,65,12,71,74,66,0,0,0,0,0,0,0,0,-210,-207,-329,-329,-329,-323,-316,-318,-289,-315,-570,-544,-1380,-1379,-1468,-1192,-1173,-831,-793,-676,-29964,-29967,-29965,-29966,-29964,-29964,-29968,-29968,-29963,-29971,-29971,-29975,-29975,-29978,-29977,-29977,-29982,-29983,-29983,-29984,-29984,-29985]} 1. d4 Nf6 2. Nf3 c5 3. d5 a6 (3... b5 4. c4 bxc4 5. Nc3 d6 6. e4 g6 7. h3 Bg7 8. Bxc4 O-O 9. O-O Nbd7 10. Re1 a5 11. Bf4 Ba6 12. Bxa6 Rxa6 13. e5 dxe5 14. Nxe5 Nxe5 15. Bxe5 Rb6 16. Qd2 Rb4 17. a3 {½-½ (41) Kamsky,G (2666)-Alekseev,E (2620) Sochi 2018}) 4. Bg5 d6 5. Bxf6 $146 ({Predecessor:} 5. a4 Ne4 6. Bh4 Bf5 7. e3 h6 8. Bd3 g5 9. Nfd2 Qa5 10. Bg3 Bg7 11. O-O Nxg3 {1-0 (45) Zajogin,A (2380)-Milov,L (2422) Bayern 2016}) 5... exf6 6. e4 {A43: Schmid Benoni} g6 7. a4 Bg7 8. Bd3 {The position is equal.} f5 9. exf5 Bxb2 10. Ra2 Bg7 (10... Qe7+ {is interesting.} 11. Qe2 Bf6 12. Nbd2 Bxf5 13. Bxf5 gxf5 14. Ra3 Qxe2+ 15. Kxe2 Kd8) 11. O-O O-O 12. c4 Nd7 {[%cal Bb8d7,Bd7f6,Bf6h5,Bh5f4][%mdl 32]} 13. Re1 Nf6 14. Rae2 Bd7 {[%cal Bc8d7,Bd7a4,Ba4b3][%mdl 32]} 15. Nc3 Nh5 (15... Qa5 $5 {[%cal Ra5c3]} 16. Qd2 Bxa4 $11) 16. Qd2 Qa5 17. Ne4 Qxd2 $1 18. Rxd2 Bxa4 19. Ra2 b5 20. Nxd6 Nf4 21. Bf1 $1 $36 {[%mdl 2048] White has the initiative.} Bb3 22. Ra3 bxc4 (22... Bc2 {seems wilder.} 23. cxb5 axb5 24. Rxa8 Rxa8 25. Bxb5 Rd8) 23. Nxc4 Rfb8 24. fxg6 (24. d6 $5 {[%cal Rd6d7]}) 24... hxg6 25. Nfd2 Bxc4 26. Bxc4 a5 (26... Rd8 $11) 27. g3 Rb2 28. Ne4 Rc2 29. Bb3 (29. Ra4 $14 Nh5 30. d6) 29... Ne2+ (29... Re2 $1 $11 {remains equal.} 30. Rxe2 Nxe2+ 31. Kf1 Nc3 32. Nxc3 (32. Nxc5 Bf8 $11) 32... Bxc3) 30. Kf1 Nd4 31. Bxc2 (31. Ba4 $14) 31... Nxc2 $11 32. Ra4 {[#] Threatens to win with Rc1.} Nxe1 33. Kxe1 {[%mdl 4096] Endgame KRB-KRN} Bd4 {White must now prevent ...Re8.} 34. Kf1 Kf8 35. Rc4 $2 {[#]} (35. Nd2 $11) 35... a4 $1 $19 {[%cal Ba5a4,Ba4a3,Ba3a2][%mdl 32] aiming for ...a3.} 36. Nxc5 (36. Rc2 $142) 36... Bxc5 37. Rxc5 {KR-KR} a3 38. Rc1 a2 39. Ra1 Ke7 40. h4 $2 (40. h3) 40... Kd6 41. Kg2 Kxd5 42. g4 Ke4 43. h5 gxh5 44. gxh5 Kf5 45. h6 Kg6 {Black mates.} 46. Kg3 Kxh6 47. Kf4 Kg6 48. Kg4 Kf6 49. Kf4 Ra4+ 50. Kg3 Kf5 51. Kf3 Ra3+ 52. Ke2 Kf4 53. Kf1 Kf3 54. Ke1 f5 55. Kd2 Kxf2 {[%mdl 32768] Precision: White = 31%, Black = 66%. . An unexpected result.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "3.8"]
[White "Zaragatski, Ilja"]
[Black "Gavarrete, Joel"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2465"]
[BlackElo "2040"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,59,29,27,27,21,12,27,20,16,36,36,41,37,40,43,41,29,49,40,38,50,88,91,109,103,189,197,185,146,132,121,341,350,331,341,325,303,400,393,637,612,890,878,914,870,2218,2148,29992,29993]} 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. d3 d6 6. Rb1 c5 {A16: English Opening: 1...Nf6 with ...d5} (6... a5 7. a3 e5 8. b4 axb4 9. axb4 c6 10. e4 Be6 11. Nge2 d5 12. exd5 cxd5 13. cxd5 Nxd5 14. O-O Nc6 15. b5 {0-1 (51) Zaragatski,I (2495)-Predojevic,B (2621) Germany 2018}) 7. a3 {LiveBook: 5 Games} Nbd7 8. e3 $146 ({Predecessor:} 8. b4 Rb8 9. Bd2 b6 10. Nf3 Bb7 11. O-O Ne8 12. Qc1 Nc7 13. Bh6 e5 14. Bxg7 Kxg7 {1-0 (29) Loew,G (2263)-Bykhovsky,A (2458) Bad Wiessee 2006}) 8... Rb8 {The position is equal.} 9. b4 a6 10. b5 a5 11. Nge2 b6 12. O-O Bb7 13. e4 e6 14. h3 d5 15. exd5 exd5 16. cxd5 Ne8 17. d4 Rc8 18. dxc5 Rxc5 {[#]} (18... Nxc5 $16 19. Nd4 Qd7) 19. Na4 $1 $18 Rc4 20. Be3 Nd6 21. Nd4 Nc5 $2 (21... Bxd4 $16 {is a better defense.} 22. Bxd4 Re8) 22. Nxc5 bxc5 23. Nc6 Qb6 24. a4 Re8 25. Re1 Ne4 $2 (25... Rxe3 26. Rxe3 Bf6) 26. Rc1 Nc3 27. Qd3 Rxa4 28. Rxc3 Bxc3 29. Qxc3 {[#] Threatening mate with Bh6.} Qxb5 30. Bh6 {Accuracy: White = 88%, Black = 29%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "4"]
[White "Almeida Quintana, Omar"]
[Black "Strikovic, Aleksa"]
[Result "1/2-1/2"]
[ECO "A41"]
[WhiteElo "2540"]
[BlackElo "2490"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,33,0,9,-14,29,29,25,-7,-8,-2,4,0,4,1,1,0]} 1. d4 d6 2. Nf3 Nf6 3. e3 g6 4. b4 Bg7 5. Bb2 O-O 6. c4 e5 7. dxe5 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3} Nfd7 8. Nc3 Nxe5 9. Nxe5 Bxe5 10. Be2 a5 {LiveBook: 4 Games} 11. a3 Nd7 $146 {[%cal Bb8d7,Bd7b6,Bb6a4][%mdl 32]} ({Predecessor:} 11... Qh4 12. g3 Qh3 13. Bf1 Qg4 14. Be2 Qh3 {½-½ (40) Macieja,B (2584)-Gdanski,J (2523) Warsaw 2002}) 12. O-O Nb6 13. Rb1 axb4 {The position is equal.} 14. axb4 Be6 15. Nd5 Na4 16. Bxe5 dxe5 17. Ra1 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "4"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Morales, Carlos"]
[Result "1-0"]
[ECO "A56"]
[WhiteElo "2529"]
[BlackElo "2005"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,71,30,37,48,27,43,27,42,30,53,24,26,26,43,48,72,70,94,93,93,93,108,91,92,87,140,80,144,141,128,120,129,128,270,197,179,189,191,176,215,214,296,300,388,387,387,392,662,647,643,622,707,709,936,924,1639,1641]} 1. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 O-O 6. Bd3 e6 7. Nge2 exd5 8. cxd5 d6 9. O-O {LiveBook: 552 Games} Qe7 {A65: Modern Benoni: 6 e4} (9... a6 10. a4 Re8 11. Ng3 b6 12. h3 Ra7 13. Bg5 h6 14. Bd2 Nh7 15. f4 h5 16. Kh1 h4 17. Nge2 Nd7 18. Be1 Rc7 {½-½ (75) Jumabayev,R (2605)-Amonatov,F (2615) Batumi 2018}) 10. h3 Nbd7 11. Ng3 Ne8 $146 {White has an edge.} ({Predecessor:} 11... a6 12. a4 b6 13. f4 h5 14. e5 dxe5 {1-0 (24) Adams,S (1694)-Essa,N (1785) Bloemfontein 2016}) 12. Be3 a6 13. a4 Rb8 14. Qd2 $36 {[%mdl 2048] White is pushing.} Ne5 15. Be2 b6 16. Rab1 b5 17. axb5 axb5 18. b4 {Strongly threatening bxc5.} c4 19. f4 Nd7 20. Bd4 Bh6 (20... Qh4 $142 21. Bxg7 Nxg7) 21. Qe1 (21. Bd1 $142) 21... f6 (21... Bg7 $142 22. Bxg7 Nxg7) 22. Bg4 Nc7 23. Qf2 Bg7 24. Ra1 Na6 (24... Ne5 $16) 25. Rfb1 Nc7 26. Ra7 Bb7 27. Bxd7 Qxd7 28. f5 g5 29. Nce2 {[%cal Bc3e2,Be2d4,Bd4e6][%mdl 32]} Qe8 30. Bc3 Rf7 31. Nd4 Bxd5 $2 {[#]} (31... h5 32. Ne6 h4) 32. Rxc7 $18 {White is clearly winning.} Rxc7 33. exd5 Bh8 34. Ne6 Re7 35. Ne4 {[%mdl 64] [#] Double Attack} Qh5 36. Bxf6 {[%mdl 64] Double Attack. Accuracy: White = 74%, Black = 34%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "4"]
[White "Barrientos, Sergio E"]
[Black "Zaragatski, Ilja"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2494"]
[BlackElo "2465"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,72,-67,-34,-52,-32,-69,-66,-17,-31,-65,0,0,0,-72,-71,-63,-70,-67,-56,-57,-65,-80,-73,-130,-106,-196,-185,-198,-192,-165,-126,-148,-187,-288,-236,-236,-207,-462,-483,-483,-460,-583,-595,-722,-741,-819,-816,-1164,-1139,-29996,-29997]} 1. d4 Nf6 2. Nf3 c5 3. g3 cxd4 4. Nxd4 d5 {[%cal Bd7d5,Bd5d4][%mdl 32]} 5. Bg2 e5 6. Nb3 Be6 7. O-O Nc6 8. Bg5 Be7 9. Nc3 d4 {A43: Schmid Benoni} 10. Bxf6 (10. Na4 Bd5 11. Bxf6 Bxf6 12. Bxd5 Qxd5 13. Nc3 Qd8 14. Ne4 Be7 15. c3 f5 16. Nec5 dxc3 17. Nxb7 Qxd1 18. Rfxd1 cxb2 {1-0 (86) Bindrich,F (2605)-Batsiashvili,N (2504) Caleta 2018}) 10... gxf6 11. Ne4 Qb6 12. Qc1 h5 {[%cal Bh7h5,Bh5h4,Bh4h3][%mdl 32] LiveBook: 5 Games} 13. c3 $146 ({Predecessor:} 13. c4 h4 14. c5 Qb5 15. Qd2 a5 16. Rfd1 Rd8 17. Nc1 hxg3 18. hxg3 {0-1 (41) Keene,R-Panno,O Palma de Mallorca 1971}) 13... h4 14. cxd4 Bxb3 15. axb3 Nxd4 16. Qe3 Qxb3 (16... h3 $15 17. Bf3 Qxb3) 17. Qxb3 $11 Nxb3 18. Ra4 (18. Rad1 $11 {remains equal.}) 18... h3 $17 19. Bh1 O-O-O $1 {Hoping for ...f5.} 20. Nc3 $1 Kb8 $1 $36 {[%mdl 2048] Black has good play.} 21. Bd5 Nc5 22. Rb4 f5 23. Ra1 (23. Bxf7 $142 Rd2 24. Nd5) 23... Rh6 24. f3 (24. Bxf7 $17 {is a better defense.} a6 25. Rf1) 24... Rhd6 $19 25. e4 fxe4 26. fxe4 {[#]} f5 $1 {[%mdl 512] aiming for ...Bg5.} 27. Rb5 {[#]} (27. exf5 Rxd5) 27... R6d7 $1 28. Bc6 (28. exf5 {was called for.} a6 29. Rba5) 28... Rd2 29. exf5 {[#]} a6 $1 {[%cal Ra6b5]} 30. f6 $2 (30. Rxa6 Kc7 31. Bxb7 Nxa6 32. Bxa6) 30... Bf8 ({Not} 30... axb5 31. fxe7 bxc6 32. exd8=N $17) 31. Rb4 R8d4 32. Rxd4 exd4 {[%cal Be5d4,Bd4d3][%mdl 32]} 33. Ne4 Rg2+ 34. Kf1 bxc6 35. Nxc5 Bxc5 36. Rc1 d3 {Precision: White = 26%, Black = 85%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "4"]
[White "Mitkov, Nikola"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C26"]
[WhiteElo "2477"]
[BlackElo "2661"]
[Annotator "TA"]
[PlyCount "36"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,36,0,-11,-9,32,31,29,31,31,26,27,27,23,7,31,0,1,13,23,0,32,27,31,35,35,15,13,8,21]} 1. e4 e5 2. Bc4 Nf6 3. Nc3 Bc5 4. Nge2 (4. d3 c6 5. Bb3 d6 6. Nf3 O-O 7. h3 Nbd7 8. O-O Bb6 9. a3 Nc5 10. Ba2 Ne6 11. Ne2 Re8 12. Be3 Bxe3 13. fxe3 {1-0 (22) Nakamura,H (2780)-Topalov,V (2749) Saint Louis 2017}) 4... c6 5. O-O d6 $146 ({Predecessor:} 5... O-O 6. d4 exd4 7. Nxd4 b5 8. Bb3 a5 9. e5 a4 10. Bg5 Qb6 11. Nf5 Ne8 {1-0 (35) Stoyanov,T-Krastev,K (1825) Sofia 2010}) 6. d4 {C27: Vienna Game: 2...Nf6 3 Bc4 Nxe4} Bb6 (6... exd4 {seems wilder.} 7. Nxd4 O-O 8. Nb3 Bg4 9. Qd3 b5) 7. dxe5 dxe5 8. Qxd8+ {White has an edge.} Bxd8 9. a4 a5 10. Be3 Ng4 11. Bc5 Na6 {[%cal Bb8a6,Ba6c7,Bc7e6,Be6c5][%mdl 32]} 12. Bd6 {And now h3 would win.} Bc7 13. Bxc7 Nxc7 14. Nd1 Ne6 15. f3 Nf6 {[%cal Bg4f6,Bf6d7,Bd7b6][%mdl 32]} 16. Ne3 Nc5 17. Nc1 Nfd7 18. Rd1 Nb6 {Accuracy: White = 70%, Black = 67%.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "4"]
[White "Sriram, Jha"]
[Black "Mejia de L., Fernando A."]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2373"]
[BlackElo "1742"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,65,110,108,127,123,114,142,141,151,125,181,182,206,193,245,240,224,226,268,229,297,300,310,287,351,285,309,258,252,237,247,259,416,418,437,437,523,529,566,554,862,878,1654,1686,1677,1701,1611,1596,1661,1452,1838,1847,2845,2842,2858,2867,3203,2785]} 1. d4 Nf6 2. Nf3 g6 3. c4 d5 4. cxd5 c6 (4... Nxd5 5. e4 Nb6 6. Nc3 Bg7 7. h3 O-O 8. Be3 Nc6 9. Bb5 f5 10. Qb3+ Kh8 11. Rd1 Na5 12. Qb4 a6 13. Qxa5 axb5 14. Qxb5 fxe4 15. Ng5 c6 16. Qb3 {1-0 (38) Le,Q (2739)-Maghsoodloo,P (2569) Ashkhabad 2017}) 5. dxc6 Nxc6 6. Nc3 $146 {D70: Grünfeld: Unusual White 3rd moves (met by ...d5)} ({Predecessor:} 6. e3 a6 7. Be2 Bg7 8. O-O O-O 9. Nc3 Nd5 10. Bd2 Re8 11. Rc1 {1-0 (24) Boenisch,A (2075)-Naudin,Y France 1998}) 6... Bg7 7. d5 Nb8 8. e4 {White is clearly better.} O-O 9. Be2 {[%cal Bf1e2,Be2c4,Bc4b3][%mdl 32]} Nbd7 (9... e6 $16 {was called for.} 10. O-O exd5) 10. O-O $18 Ne8 11. Bf4 e5 (11... Nd6 {was necessary.} 12. e5 g5) 12. dxe6 fxe6 13. Bg3 Qa5 14. Bc4 Nb6 15. Bb3 Kh8 16. h4 Nf6 17. Ng5 h6 18. Nxe6 Bxe6 19. Bxe6 Rae8 20. Qb3 Qh5 $2 (20... Qc5 {is a better defense.} 21. Bf7 Nxe4) 21. Rad1 Ng4 22. a4 {White is clearly winning.} g5 23. hxg5 Qxg5 {[#]} 24. a5 $1 Ne5 (24... Qxa5 25. Bxg4) 25. axb6 Rf3 26. gxf3 Nxf3+ 27. Kg2 Nh4+ 28. Kh3 Nf3 29. Qb5 Rxe6 30. bxa7 {[%mdl 64] [#] Discovered Attack} Ne5 31. a8=Q+ {[%mdl 64] Double Attack} Kh7 32. Qe2 Ng6 33. Qg4 {Accuracy: White = 68%, Black = 22%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "4"]
[White "Lozano, Ricardo"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "2017"]
[BlackElo "2512"]
[Annotator "ChessBase"]
[PlyCount "66"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. f4 {[%emt 0:03:50]} c5 {[%emt 0:01:19]} 2. e4 {[%emt 0:01:15]} Nc6 {[%emt 0:02:09]} 3. Nf3 {[%emt 0:00:13]} g6 {[%emt 0:00:08]} 4. Be2 {[%emt 0:00:17]} d5 {[%emt 0:02:03]} 5. d3 {[%emt 0:00:52]} Bg7 {[%emt 0:00:27]} 6. O-O {[%emt 0:00:28]} e6 {[%emt 0:00:42]} 7. Nc3 {[%emt 0:02:20]} Nge7 {[%emt 0:00:29]} 8. Qe1 {[%emt 0:01:33]} b6 {[%emt 0:02:29]} 9. Qg3 {[%emt 0:00:16]} Ba6 {[%emt 0:02:01]} 10. Ne5 {[%emt 0:02:12]} Nd4 {[%emt 0:03:18]} 11. Bd1 {[%emt 0:01:01]} O-O {[%emt 0:04:29]} 12. Qh3 {[%emt 0:02:49]} b5 {[%emt 0:03:58]} 13. Re1 {[%emt 0:04:34]} b4 {[%emt 0:02:30]} 14. Ne2 {[%emt 0:00:31]} dxe4 {[%emt 0:03:58]} 15. Nxd4 {[%emt 0:02:34]} Qxd4+ {[%emt 0:00:28]} 16. Qe3 {[%emt 0:06:49]} exd3 {[%emt 0:02:21]} 17. Qxd4 {[%emt 0:00:21]} cxd4 {[%emt 0:00:04]} 18. Nxd3 {[%emt 0:00:56]} Rab8 {[%emt 0:02:50]} 19. Nc5 {[%emt 0:00:27]} Bb5 {[%emt 0:00:56]} 20. a4 {[%emt 0:04:00]} Bc6 {[%emt 0:01:26]} 21. Be2 {[%emt 0:02:26]} a5 {[%emt 0:02:54]} 22. Bc4 {[%emt 0:01:19]} Rfc8 {[%emt 0:02:33]} 23. Nxe6 {[%emt 0:00:20]} fxe6 {[%emt 0:00:10]} 24. Bxe6+ {[%emt 0:01:13]} Kf8 {[%emt 0:00:03]} 25. Bxc8 {[%emt 0:00:18]} Rxc8 {[%emt 0:00:04]} 26. g4 {[%emt 0:03:33]} Bf3 {[%emt 0:04:21]} 27. f5 {[%emt 0:02:07]} Bxg4 {[%emt 0:01:33]} 28. fxg6 {[%emt 0:00:23]} Nxg6 {[%emt 0:01:01]} 29. Bg5 {[%emt 0:01:31]} Rxc2 {[%emt 0:02:24]} 30. Rf1+ {[%emt 0:00:13]} Kg8 {[%emt 0:00:29]} 31. Rae1 {[%emt 0:00:23]} Be2 {[%emt 0:00:20]} 32. Rc1 {[%emt 0:03:01]} d3 {[%emt 0:01:40]} 33. Rxc2 {[%emt 0:00:38]} Bd4+ {[%emt 0:01:06]} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "4"]
[White "Ajanel Xiroj, Genry"]
[Black "Molina Hun, Hieysson"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "1647"]
[BlackElo "1401"]
[Annotator "NA RC"]
[PlyCount "88"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. c4 {[%emt 0:03:53]} Nf6 {[%emt 0:00:00]} 2. Nc3 {[%emt 0:00:42]} g6 {[%emt 0:00:07]} 3. Nf3 {[%emt 0:00:30]} Bg7 {[%emt 0:00:24]} 4. g3 {[%emt 0:01:01]} O-O {[%emt 0:01:42]} 5. Bg2 {[%emt 0:01:35]} c5 {[%emt 0:03:45]} 6. O-O {[%emt 0:02:58]} d6 {[%emt 0:02:47]} 7. Rb1 {[%emt 0:02:33]} Nc6 {[%emt 0:06:17]} 8. a3 {[%emt 0:09:09]} a5 {[%emt 0:06:12]} 9. Nb5 {[%emt 0:03:53]} Bf5 {[%emt 0:09:57]} 10. d3 {[%emt 0:08:24]} Qd7 {[%emt 0:07:35]} 11. Re1 {[%emt 0:10:52]} Ne8 {[%emt 0:04:09]} 12. b3 {[%emt 0:04:31]} Nc7 {[%emt 0:05:07]} 13. Nxc7 {[%emt 0:06:49]} Qxc7 {[%emt 0:02:26]} 14. Bb2 {[%emt 0:00:16]} e5 {[%emt 0:00:37]} 15. e4 {[%emt 0:04:30]} Bg4 {[%emt 0:02:52]} 16. h3 {[%emt 0:02:11]} Bxf3 {[%emt 0:01:58]} 17. Bxf3 {[%emt 0:02:26]} Qe7 {[%emt 0:00:54]} 18. Qd2 {[%emt 0:01:02]} h5 {[%emt 0:00:35]} 19. Bc3 {[%emt 0:01:01]} a4 {[%emt 0:09:58]} 20. b4 {[%emt 0:03:18]} b6 {[%emt 0:00:34]} 21. Rb2 {[%emt 0:02:10]} Rfb8 {[%emt 0:00:38]} 22. Reb1 {[%emt 0:00:19]} Qc7 {[%emt 0:00:08]} 23. bxc5 {[%emt 0:02:36]} bxc5 {[%emt 0:00:10]} 24. Rb5 {[%emt 0:00:19]} Na7 {[%emt 0:03:30]} 25. Rxb8+ {[%emt 0:00:50]} Rxb8 {[%emt 0:00:05]} 26. Rxb8+ {[%emt 0:00:13]} Qxb8 {[%emt 0:00:04]} 27. Qb2 {[%emt 0:00:14]} Qb3 {[%emt 0:00:45]} 28. Be2 {[%emt 0:02:15]} Nc6 {[%emt 0:00:53]} 29. Qxb3 {[%emt 0:01:44]} axb3 {[%emt 0:00:05]} 30. Bd1 {[%emt 0:00:34]} Nd4 {[%emt 0:00:04]} 31. Bxd4 {[%emt 0:01:12]} exd4 {[%emt 0:00:04]} 32. Bxb3 {[%emt 0:00:12]} Bf6 {[%emt 0:00:03]} 33. Kg2 {[%emt 0:00:17]} g5 34. f4 {[%emt 0:02:59]} Kg7 {[%emt 0:04:20]} 35. Kf3 {[%emt 0:00:16]} Kg6 {[%emt 0:01:00]} 36. fxg5 {[%emt 0:00:35]} Kxg5 {[%emt 0:00:19]} 37. h4+ {[%emt 0:00:10]} Kg6 {[%emt 0:00:04]} 38. Kf4 {[%emt 0:00:07]} Bd8 {[%emt 0:02:28]} 39. Kf3 {[%emt 0:01:02]} f6 {[%emt 0:00:08]} 40. Kf4 {[%emt 0:00:04]} Ba5 {[%emt 0:00:08]} 41. Bc2 {[%emt 0:01:03]} Bd8 {[%emt 0:00:05]} 42. Bb3 {[%emt 0:00:16]} Ba5 {[%emt 0:00:05]} 43. Bc2 {[%emt 0:00:04]} Bd8 {[%emt 0:00:03]} 44. Bb3 {[%emt 0:00:09]} Ba5 {[%emt 0:00:04]} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.10"]
[Round "4"]
[White "Gustavo, Puga"]
[Black "Burgos, Carlos"]
[Result "0-1"]
[ECO "B32"]
[BlackElo "2277"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,96,-37,-92,-72,-68,-10,-3,-8,-66,-66,-121,-116,-99,-45,-171,-157,-161,-136,-134,-131,-146,-147,-134,-106,-294,-294,-454,-448,-443,-440,-414,-425,-521,-519,-510,-500,-587,-585,-725,-715,-800,-792,-763,-755,-856,-889,-1036,-1036,-994,-1018,-969,-1057,-1061,-1060,-2536,-2356,-5822,-5822,-5021,-1578,-5847,-5743,-3395,-2963,-5360,-5498,-2373,-2384,-29959,-29961,-1518,-981,-29982,-29983,-29983,-29984,-29989,-29990,-29990,-29991]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nc3 Nf6 7. f3 O-O 8. Qd2 d5 9. Nxc6 bxc6 10. e5 {LiveBook: 12 Games} ({White should play} 10. Rd1 $15) 10... Ne8 $17 {B34: Sicilian: Accelerated Dragon with 5 Nc3: sidelines} (10... Nd7 11. f4 e6 12. Be2 c5 13. Bf2 Bb7 14. Bf3 Rb8 15. Ne2 d4 16. Bxb7 Rxb7 17. c3 Nb6 18. cxd4 Nc4 19. Qc3 Nxb2 20. dxc5 {0-1 (40) Gomes,M (2354)-Kosintseva,T (2483) Sochi 2015}) 11. f4 Nc7 (11... f6 $15 12. exf6 Nxf6) 12. Be2 Ne6 {The position is equal.} 13. Bf2 (13. Rd1 $11) 13... Qa5 14. Bh4 $146 (14. Bf3 $15) ({Predecessor:} 14. O-O Rd8 15. Bg3 Ba6 16. a3 d4 17. Ne4 Qxd2 18. Nxd2 Bxe2 19. Rf2 Ba6 20. Ne4 d3 21. c3 Rd7 22. Rd1 Rad8 23. Rfd2 Bh6 24. Rf1 Bc4 {0-1 (24) Finke,L (1315)-Pieck,S (1473) Dortmund 2010}) 14... Re8 15. O-O Rb8 ({Black should try} 15... Bh6 $17) 16. f5 (16. Rab1 $15) 16... gxf5 $19 17. Rxf5 d4 18. Ne4 Qxd2 19. Nxd2 Rxb2 {Threatens to win with ...Bh6.} 20. Bd3 Nc5 $36 {[%mdl 2048] Black is on the roll.} 21. Nc4 $2 {[#]} (21. e6 $17 {might work better.} Nxe6 22. Nc4) 21... Nxd3 22. Nxb2 (22. cxd3 $142 Bxf5 23. Nxb2) 22... Nxb2 (22... Bxf5 $2 23. Nxd3 c5 24. Rf1 $19) 23. Rg5 Be6 24. Rb1 Nc4 25. Bf2 c5 26. Rb7 Nxe5 27. Rxa7 h6 28. Rg3 Rb8 {And now ...Rb1+ would win.} 29. h3 Rb1+ 30. Kh2 Rf1 31. Bg1 Ng6 32. Rf3 Be5+ 33. Kh1 Ra1 34. a4 c4 35. Ra8+ Kh7 36. Rd8 Nf4 37. Rf2 d3 38. cxd3 cxd3 39. Rxf4 Bxf4 40. Rxd3 Bc7 41. a5 Bxa5 42. Kh2 Bc7+ 43. g3 Ra2+ 44. Kh1 Bxh3 {[#] ( -> ...Bg2+)} 45. Rc3 Be5 {Black mates.} 46. Re3 Bd4 47. Rxe7 Bg2+ 48. Kh2 Bd5+ {Accuracy: White = 31%, Black = 68%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "5"]
[White "Mareco, Sandro"]
[Black "Sriram, Jha"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2661"]
[BlackElo "2373"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 33,136,41,44,32,39,28,43,34,47,34,45,31,54,30,37,22,27,0,0,0,0,-12,12,0,0,-16,0,0,0,-7,-6,-10,-10,0,0,0,0,0,0,0,0,0,0,0,26,37,204,204,204,204,368,294,399,356,678,130,114,122,107,79,79,76,145,143,136,98,98,116,143,0,0,0,135,143,135,135,135,135,135,135,132,132,132,132,133,76,29975,29976,29981,29982,29984,29985,29993,29994,29994,29995,29995,29996,29996,29997,29997,29998,29998,29999,29999]} 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nc6 6. Be3 Nf6 7. Nc3 O-O 8. Be2 d6 9. O-O Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. f3 a5 13. b3 Nd7 14. Bf2 Nc5 15. Rab1 Be5 {B38: Sicilian: Maroczy Bind with 5...Bg7 and 7...0-0} 16. Bd1 e6 17. Bc2 Qe7 {LiveBook: 3 Games. White is slightly better.} 18. Rfe1 Rfd8 {[#]} 19. Rbd1 $146 ({Predecessor:} 19. a3 Be8 20. b4 axb4 21. axb4 Na6 22. Red1 Rdc8 23. Bd3 {½-½ (41) Erdos,V (2624)-Kveinys,A (2535) Antalya 2017}) 19... b6 20. Qe3 Qc7 21. Bg3 (21. a3 {looks sharper.} Re8 22. f4 Bg7 23. Qd2 Rec8 24. a4) 21... Bxg3 22. hxg3 Qe7 23. f4 Rab8 24. a3 b5 25. b4 axb4 26. axb4 Nd7 27. Qd4 Nf8 28. cxb5 Bxb5 29. Ra1 Bc6 30. Reb1 e5 31. Qe3 exf4 32. gxf4 d5 33. Ra7 Rb7 34. Rxb7 Bxb7 35. Qc5 $36 {[%mdl 2048] White is pushing.} Qf6 36. Nxd5 Bxd5 37. exd5 Qxf4 38. Ba4 Qf5 39. Rd1 Ra8 $2 (39... Qe4 $14) 40. Bc6 $1 $18 {[%cal Rc6a8]} Ra2 41. d6 $1 {Threatens to win with Qxf5.} Qg4 $2 (41... Qxc5+ {might work better.} 42. bxc5 Ra5) 42. Qd4 $1 {[%cal Rd4g4]} Qg3 43. b5 h5 $2 (43... Qg5 44. d7 Nxd7) 44. d7 $2 (44. b6 $18 {and the rest is easy. Hoping for b7.} Nd7 45. b7) 44... Nxd7 $16 45. Qxd7 Qf2+ 46. Kh2 {And now Qd8+ would win.} Ra4 {aiming for ...Rh4+.} 47. Rd3 {Qd6 is the strong threat.} Rh4+ (47... Qf4+ $142 48. Kg1 (48. g3 Ra2+ 49. Bg2 Qf1 $16) 48... Kg7) 48. Rh3 Qf4+ 49. Kg1 Qc1+ {[#]} 50. Kf2 $1 ({Don't play} 50. Kh2 Qf4+ 51. Kg1 Qc1+ 52. Kh2 Qf4+ $18) 50... Qb2+ 51. Kg1 (51. Ke1 $16 Qe5+ 52. Kf2 Qc5+ 53. Re3 Rf4+ 54. Bf3) 51... Qc1+ $1 $11 52. Kh2 (52. Kf2 $11 Qc5+ 53. Re3 Rf4+ 54. Bf3) 52... Qf4+ $16 53. g3 {[%mdl 64] Double Attack} Qf2+ 54. Bg2 Rb4 55. Qd8+ Kg7 {[#]} 56. Rh4 $1 {[%cal Rh4b4]} Rxb5 57. Rf4 Qa2 58. Qf6+ Kg8 59. Rf2 ({Better is} 59. Re4 {Re8+ would kill now.} Rb8 60. Re7) 59... Qa7 $2 {[%mdl 8192]} (59... Qe6 $16) 60. Rd2 {White mates.} Rb8 61. Bd5 Kh7 62. Bxf7 Rb6 {[#]} 63. Bg8+ $1 {[%mdl 512]} Kh6 (63... Kxg8 64. Rd8+) 64. Qh8+ Kg5 65. Rd5+ Kg4 66. Qd4+ Kf3 67. Qf4+ Ke2 68. Rd2+ Ke1 69. Qf2# {Accuracy: White = 62%, Black = 52%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "5"]
[White "Cuenca Jimenez, Jose Fernando"]
[Black "Zaragatski, Ilja"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2512"]
[BlackElo "2465"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,101,47,31,0,0,-13,13,8,25,10,13,-9,4,10,6,10,49,4,47,58,31,-43,-53,-40,12,0,0,0,0,0,0,0,15,0,0,0,36,40,41,54,29,27,27,27,18,20,12,16,56,8,15,9,333,283,362,364,298,287,453,450,426,448,432,323,427,425,410,416,416,408,483,476,441,399,408,399,380,375,621,604,601,587,680,598,1138,1087,29969,29971,29988,29989,29992,29989]} 1. d4 d5 2. c4 e6 3. Nf3 c6 4. Bg5 f6 5. Bd2 Bd6 6. Nc3 {D30: Queen's Gambit Declined: Systems without Nc3} f5 {LiveBook: 5 Games} 7. Qc1 Nf6 8. Bf4 {The position is equal.} O-O $146 ({Predecessor:} 8... b6 9. g3 O-O 10. Bg2 Ba6 11. b3 dxc4 12. O-O Nd5 13. Bxd6 Qxd6 {1-0 (31) Rozman,L (2354)-Gorovets,A (2543) Atlantic City 2016}) 9. e3 b6 10. Bd3 Ba6 11. b3 c5 12. Bxd6 Qxd6 13. O-O cxd4 (13... dxc4 {keeps more tension.} 14. bxc4 Nc6 15. Nb5 Qe7 16. Qb2 Bb7) 14. Nxd4 Ng4 {[%csl Gg4][%cal Rd6h2]} 15. f4 dxc4 16. Bxc4 (16. Be2 $1 $14) 16... Bxc4 $15 17. bxc4 Na6 (17... Nc6 $15) 18. Ncb5 Qe7 19. h3 Nf6 20. a4 Nc5 {[%cal Ba6c5,Bc5b3,Bb3a1][%mdl 32]} 21. a5 Nfe4 22. Qa3 bxa5 23. Qxa5 e5 24. Nc6 Qf6 25. Nxe5 Nb3 {[%mdl 64] Double Attack} 26. Qa2 Nxa1 27. Nd7 Qf7 28. Nxf8 {And now Ne6 would win.} Nb3 {...Nbc5 is the strong threat.} 29. Nd7 $36 {[%mdl 2048] White is more active.} Qxc4 {[#]} 30. Nb6 $1 {[%mdl 576] Double Attack, Pin} Qxb5 (30... axb6 31. Qxa8+) 31. Nxa8 {Threatens to win with Nc7.} a5 $2 {[%mdl 8192]} (31... Qd3 $11) 32. Qc2 $18 h6 33. Nc7 Qb7 34. Ne6 Qd5 (34... Qa6 $142) 35. Qc8+ Kh7 36. Nf8+ Kh8 37. Ng6+ {[%mdl 64] Discovered Attack (Double check)} Kh7 38. Ne7 Qf7 39. Nxf5 a4 40. Nd4 Nxd4 41. exd4 {[%mdl 4096] Endgame KQR-KQN} Qd5 42. Rd1 a3 {If Black can now play ...a2 this consolidates a bit.} 43. Qc2 a2 44. Kh2 Kh8 $2 (44... h5 45. g3 Kh6) 45. Ra1 Qf5 46. g3 Qg6 47. Qd3 Qe6 48. d5 {[%cal Bd4d5,Bd5d6][%mdl 32]} Qb6 49. Rxa2 {White mates.} Qb4 {[#]} 50. d6 $1 Qe1 (50... Qxd6 51. Ra8+) 51. Re2 {Accuracy: White = 59%, Black = 32%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "5"]
[White "Strikovic, Aleksa"]
[Black "Gonzalez Zamora, Juan Carlos"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2490"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,123,26,13,6,17,14,14,10,13,0,-30,-29,-47,-42,-73,43,42,79,96,80,0,104,111,114,105,94,91,117,116,131,132,139,147,138,129,193,193,149,175,222,189,197,208,212,212,205,193,227,227,227,227,220,217,643,613,587,219,227,249,249,181,29958,29959,29960,29960,29959,29963,29964,29964,29968,29969,29969,29968,29968,29969,29968,29967,29966,29962,29974,29975,29975,29975,29975,29976,29975,29977,29978,29977,29977,29978,29979,29980,29980,29981,29983,29984,29984,29985,29985,29986,29986,29987,29987,29988,29991,29992,29992,29993]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. g3 Ne4 7. Qd3 Nxc3 {A28: English Opening: Four Knights Variation} (7... Nc5 8. Qe3+ Ne6 9. Nc2 d5 10. cxd5 Qxd5 11. f3 Qf5 12. Qd2 O-O 13. Nxb4 Nxb4 14. Ne4 Qa5 15. Kf2 {0-1 (29) Schlosser,P (2562)-Baklan,V (2648) Trieste 2007}) 8. bxc3 Be7 9. Bg2 {LiveBook: 4 Games} Ne5 {The position is equal.} 10. Qe4 d6 11. c5 $146 ({Predecessor:} 11. f4 Nd7 12. O-O O-O 13. Ba3 Nb6 14. Qd3 c5 15. Nc2 {1-0 (31) Bui,V (2480)-Nguyen Huynh Minh,H (2469) Ho Chi Minh City 2010}) 11... O-O 12. O-O dxc5 13. Nf5 Bf6 14. Bf4 Qe8 15. Rad1 Bxf5 (15... Qe6 $17 16. Bxe5 Bxe5) 16. Qxf5 $40 {[%mdl 128] White has some attack.} c6 17. Be4 {[%csl Ge4][%cal Rf5h7]} Ng6 18. Rd7 ({White should try} 18. Bd6 $16) 18... Qe6 (18... Qc8 $1 $11 {remains equal.}) 19. Qxe6 $16 ({Much weaker is} 19. Rxb7 $6 Qxf5 20. Bxf5 Nxf4 $11) 19... fxe6 {[#]} 20. Bxg6 $1 hxg6 21. Rxb7 Bxc3 22. Rc1 Bb4 23. Bd6 Rf7 24. Rxf7 Kxf7 25. Bxc5 Bxc5 (25... a5 $16) 26. Rxc5 {[%mdl 4096] Endgame KR-KR} Rc8 27. f4 Rb8 28. Rxc6 Rb2 29. Rc7+ Kf6 30. Rxa7 Rxe2 {[#]} 31. Ra5 $1 Rb2 32. h4 Rc2 33. a4 Ra2 34. g4 {[%cal Bg3g4,Bg4g5][%mdl 32]} Rc2 $2 (34... Kf7 35. Ra8 Ke7) 35. g5+ $18 Kf7 36. Ra8 $2 (36. Ra7+ Kg8 37. a5) 36... Rc4 37. a5 Rxf4 38. a6 Rxh4 $2 (38... Ra4 $18 39. Kg2 e5) 39. Rb8 {White mates.} Ra4 40. Rb7+ Kg8 41. a7 Kh7 42. Kf2 e5 43. Ke3 Ra1 44. Kd3 Ra4 45. Rd7 Ra1 46. Rc7 Ra4 47. Re7 e4+ 48. Ke3 Ra1 49. Rb7 Ra4 50. Kf4 e3+ 51. Kxe3 Ra1 52. Rc7 Ra4 53. Kd3 Ra1 54. Kd4 Ra5 55. Kc4 Ra1 56. Kb5 Kg8 57. Kb6 Kh7 58. Rc4 Rb1+ 59. Ka5 Rh1 60. Ra4 ({Inferior is} 60. a8=Q Ra1+ 61. Ra4 Rxa4+ 62. Kxa4 $11) 60... Rh2 61. a8=Q Rh3 62. Qg2 {Accuracy: White = 70%, Black = 33%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "5"]
[White "Mitkov, Nikola"]
[Black "Almeida Quintana, Omar"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2477"]
[BlackElo "2540"]
[Annotator "TA"]
[PlyCount "163"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,163,58,62,77,70,81,46,83,27,8,-16,-18,-8,0,-28,0,-47,-20,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,57,0,0,0,0,0,0,0,45,57,194,206,742,669,843,855,814,-6,0,0,823,815,731,552,538,533,521,523,510,500,504,492,492,489,474,424,477,415,503,449,439,335,606,599,558,536,525,411,375,354,329,0,353,350,529,513,479,389,525,513,487,445,470,416,402,423,764,498,460,193,284,285,277,226,276,276,277,283,269,211,243,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-29,0,0,0,0,0,0,219,227,552,552,480,479,300,0,57,0]} 1. e4 g6 2. Nc3 c6 3. d4 Bg7 4. h3 d6 5. Be3 Nf6 6. Qd2 O-O 7. f4 b5 8. Bd3 Nbd7 9. Nf3 Nb6 10. O-O {LiveBook: 4 Games. B09: Pirc Defence: Austrian Attack} Qc7 (10... Nc4 11. Bxc4 bxc4 12. f5 Rb8 13. Bh6 Rxb2 14. Rad1 Qa5 15. Bxg7 Kxg7 16. g4 h6 17. Rf2 Nh7 {1-0 (46) Klein,D (2498)-Piepho,N (2293) Barcelona 2014}) 11. f5 b4 $146 ({Predecessor:} 11... Nc4 12. Bxc4 bxc4 13. Bh6 Nd7 14. Bxg7 Kxg7 15. Kh1 Nb6 16. Qf4 c5 17. Nh4 cxd4 18. Nb5 Qd8 19. Nxd4 Nd7 20. fxg6 hxg6 21. Nxg6 e5 22. Nf5+ Kxg6 23. Qh6# {1-0 (23) Botan,M (2175)-Gerlach,M (2075) Biel 1991}) 12. Nd1 {White is better.} d5 {[%cal Bd6d5,Bd5e4][%mdl 32]} 13. e5 (13. Bf4 $16 Qb7 14. exd5) 13... Ne4 $11 14. Bxe4 dxe4 15. Nh4 $1 Ba6 16. Rf2 {[#]} c5 $1 {[%mdl 512]} 17. Bh6 (17. f6 {is more complex.} Nc4 18. Qe1 exf6 19. exf6 Bh8 20. Nf5) (17. dxc5 Nc4) 17... cxd4 (17... e3 $5 18. Qxe3 cxd4 $15) 18. Bxg7 e3 19. Nxe3 $1 dxe3 20. Qxe3 Kxg7 21. f6+ $1 exf6 22. exf6+ Kh8 23. Qh6 {[%csl Gf6][%cal Rh6g7]} Rg8 24. Nf3 $1 {[%cal Rf3g5] [#] Threatening mate with Ng5.} g5 $1 25. Nxg5 Rxg5 26. Qxg5 {[%csl Gf6][%cal Rg5g7]} Rg8 27. Qf4 Qc5 ({Better is} 27... Qc6 $11) 28. Re1 ({White should try} 28. Rd1 $1 $14) 28... Bb7 29. Qe3 Qc6 {[%cal Rg8g2]} 30. Ree2 $1 {[%cal Be1e2,Be2d2,Bd2d4][%mdl 32] Black must now prevent Qe7.} Ba6 31. Qe4 Qc8 32. Rd2 Nc4 ({Black should play} 32... Bb7 $1 $14 33. Qe7 Bd5) 33. Rd4 $18 Qc5 $2 (33... Na5 34. Qf5 Nc6) 34. Rf5 Qb6 35. Rh5 {[%csl Ge4][%cal Rh5h7]} Rg6 36. Qe8+ Rg8 37. Qe4 $40 {[%csl Ge4][%cal Rh5h7][%mdl 128] White mounts an attack.} Rg6 38. Qh4 Kg8 39. Rxh7 {[%csl Gh4][%cal Rh7h8]} Qxd4+ 40. Qxd4 {White wants to mate with Qh4.} Kxh7 41. g4 Nb6 42. h4 Bc4 43. g5 Be6 44. Qxb4 Nd5 45. Qa5 Nxf6 46. Qxa7 Rg8 47. Qd4 Nd7 48. Qe4+ Kh8 $2 (48... Kg7 49. b3 Rc8) 49. a4 Rc8 50. b3 Rc5 51. Kf2 Kg7 52. Kg3 Rc3+ 53. Kf2 {And now Qd4+ would win.} Rc5 54. c4 Ra5 (54... Re5 $142 55. Qd4 f6) 55. Kg3 Kg8 56. Kf4 Nc5 57. Qe3 Nd7 58. Qd3 Rc5 59. Qd4 Rf5+ 60. Kg3 Nc5 (60... Kh7 $142 61. Qe4 Kg7) 61. b4 Nxa4 62. c5 (62. Kg2 $142) 62... Rd5 63. Qf6 Rd3+ 64. Kf2 $1 Nc3 {aiming for ...Ne4+.} 65. Qf4 $1 Bd5 {Now ...Ne4+ and Black clings on.} 66. h5 Ne4+ 67. Ke1 Rb3 {[#]} 68. Qb8+ $2 (68. h6 $1 $18) 68... Kh7 $11 69. g6+ fxg6 70. hxg6+ Kxg6 71. Qe8+ Kf5 {Hoping for ...Re3+.} 72. Qh5+ Ng5 73. Qd1 Ke5 74. Qh5 Kf5 75. Qd1 Nf3+ 76. Kf2 Rb2+ 77. Ke3 Ke6 $2 (77... Rb3+ $1 $11 {and Black has nothing to worry.} 78. Qxb3 Bxb3 79. Kxf3 Ke6) 78. Qa4 $18 {[%mdl 1024] Threatens to win with Qe8+. White has strong compensation.} Ne5 $2 (78... Rb3+ {is a better chance.} 79. Kf4 Kf6) 79. Qe8+ Kf5 80. Qh5+ Ke6 81. Qe8+ $2 (81. Qh6+ $18 Kf5 82. Kd4) 81... Kf5 $14 82. Qh5+ {Precision: White = 52%, Black = 43%.} (82. Qf8+ $14 Bf7 {[#]} 83. c6 $1 {[%mdl 512]} Rb3+ 84. Kd2 Rd3+ 85. Kc2) 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "5"]
[White "Calderin Gonzalez, Roberto"]
[Black "Gavarrete, Joel"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2427"]
[BlackElo "2040"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,77,28,57,63,58,58,56,31,68,58,49,27,111,108,418,430,428,419,423,437,654,472,460,460,439,442,427,311,401,408,396,389,363,266,261,263,316,303,430,446,437,379,391,343,363,277,286,276,252,235,228,0,259,195,194,169,279,259,409,402,366,186,29987,29988]} 1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 c6 5. Qb3 Qb6 6. c5 Qxb3 7. axb3 Nd7 8. b4 Ngf6 {LiveBook: 3 Games. D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} (8... a6 9. b5 cxb5 10. Nxb5 Rc8 11. Nc3 Ne7 12. e3 Nc6 13. Nh4 Be4 14. f3 Bc2 15. Kd2 Nb4 16. f4 Be7 {½-½ (59) Cramling,P (2448)-Smith,A (2507) Lund 2017}) 9. b5 Be7 10. bxc6 bxc6 {White is slightly better.} 11. Bf4 Nh5 12. Bd2 $146 ({Predecessor:} 12. Bc7 O-O 13. h3 Rfc8 14. Bh2 Nhf6 15. b4 Bd8 {1-0 (31) Dudas,J (2211)-Podoba,M (2157) Slovakia 2011}) 12... O-O 13. b4 Rfb8 (13... Nhf6 $1 $11) 14. e3 $16 Ndf6 $2 {[%mdl 8192]} (14... a6 $16 {is a better chance.}) 15. Ne5 $18 Rxb4 16. Nxc6 Rb7 17. f3 {[%cal Bf2f3,Bf3f4][%mdl 32]} Rc8 (17... Rc7 $142 18. Ra6 Rac8) 18. Nxe7+ Rxe7 19. Be2 e5 20. Kf2 e4 21. f4 Bg4 {[#]} 22. Nxd5 $1 {[%mdl 512]} Rd7 (22... Nxd5 23. Bxg4) 23. Nxf6+ Nxf6 24. h3 Bxe2 25. Kxe2 Rb7 26. Rhb1 Rcb8 (26... Rd7 {keeps fighting.} 27. Ra6 Nd5) 27. Rxb7 Rxb7 {[%mdl 4096] Endgame KRB-KRN} 28. Ra6 Kf8 29. c6 Rc7 30. Bb4+ Ke8 31. Bd6 Rc8 32. Be5 Nd5 33. Bd6 $2 (33. Ra5 $18) 33... Rd8 $2 {[%mdl 8192]} (33... Nf6 $1 $11 {and Black is okay.}) 34. Bc5 Rc8 35. f5 Rb8 (35... Nc7 {might work better.} 36. Rxa7 Nd5) 36. Rxa7 Rb2+ (36... Rc8 {was necessary.} 37. Rd7 Rd8 38. Rxd8+ Kxd8) 37. Ke1 {Intending Ra8+ and mate.} Rb8 38. Rd7 (38. Ra5 $142 {And now Bd6 would win.} Nxe3 39. g4) 38... Nxe3 $2 {[#]} (38... Rd8 $18 39. Ra7 Rc8) 39. Re7+ {Precision: White = 61%, Black = 23%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "5"]
[White "Juarez Flores, Roberto"]
[Black "Barrientos, Sergio E"]
[Result "0-1"]
[ECO "A53"]
[WhiteElo "2109"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,83,27,27,42,36,43,29,28,36,67,9,7,-24,48,0,57,39,59,51,81,23,47,9,50,18,64,-40,0,-43,-36,-50,-35,-109,-125,-150,-95,-96,-77,-129,-93,-101,-63,-86,-88,-55,-65,-77,0,-11,-18,-34,-16,-26,-34,-166,-155,-143,-125,-423,-350,-583,-536,-528,-516,-482,-491,-885,-920,-902,-872,-5157]} 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. d5 Nc5 6. Qc2 a5 7. h3 {A53: Old Indian Defence without Nf3} (7. Nf3 Be7 8. Be3 b6 9. h3 Bd7 10. Be2 g6 11. Nd2 h5 12. g3 a4 13. f4 h4 14. g4 exf4 15. Bxf4 {0-1 (55) Lenaerts,L (2362)-Bosboom,M (2404) Haarlem 2018}) 7... Be7 8. Be3 {LiveBook: 3 Games} O-O 9. Nf3 {White is slightly better.} Nfd7 10. g4 c6 11. Be2 a4 12. O-O-O $146 (12. O-O $14) ({Predecessor:} 12. Rd1 Qa5 13. O-O Rd8 {1-0 (51) Hasterok,M (1868)-Zochowski,K (2269) Wroclaw 2018}) 12... Qa5 $11 13. Kb1 Nb6 (13... a3 $11) 14. Nd2 Bd7 (14... a3 $11) 15. a3 $14 Rac8 16. Rc1 Na8 {[%cal Bb6a8,Ba8c7,Bc7a6][%mdl 32]} 17. Qd1 (17. g5 $16) 17... Nc7 $11 18. f3 cxd5 19. cxd5 {Nc4 is the strong threat.} b5 20. Na2 (20. Bxc5 $1 $14 dxc5 21. d6 Bxd6 22. Nc4 {[%mdl 64] Discovered Attack} bxc4 23. Qxd6 {[%mdl 64] Double Attack}) 20... N7a6 21. Rc3 Rb8 22. Qc2 Qd8 23. Rc1 (23. h4 $15) 23... Bg5 $17 24. Qd1 Bxe3 (24... b4 $142 25. Nxb4 Nxb4 26. axb4 Bxe3 27. Rxe3 Rxb4) 25. Rxe3 Qg5 26. Rec3 (26. Qg1 $142) 26... g6 27. Qe1 f5 28. h4 Qf4 {[%cal Rf5e4]} 29. gxf5 gxf5 30. Nb4 {[#]} fxe4 (30... Kh8 $1 $17 31. Nd3 Nxd3 32. Bxd3 Nc5) 31. Nxa6 Nxa6 32. fxe4 {Strongly threatening Rf3.} Qf2 33. Rg3+ Kh8 34. Bg4 (34. b4 $15) 34... Bxg4 $19 35. Rxg4 Nc5 36. Qd1 $2 {[%mdl 8192]} (36. Rg3 $17) 36... Qd4 37. Nf1 $2 (37. Rg2 {was called for.} b4 38. Nc4 Qxe4+ 39. Qc2) 37... Nd3 {[%csl Gd3][%cal Rd4b2] Black is clearly winning.} 38. Rc2 b4 {( -> ...bxa3)} 39. Rg3 Nc5 40. Nd2 (40. Ne3 $142 Nxe4 41. Rh3) 40... bxa3 41. Rxa3 {[#]} Rb3 $1 {[%mdl 512]} 42. Rc3 {Accuracy: White = 20%, Black = 51%.} (42. Nxb3 Qxd1+) 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "5"]
[White "Ramirez Marino, Richard Daniel"]
[Black "Juarez Flores, Carlos A."]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "2080"]
[BlackElo "2377"]
[Annotator "NA"]
[PlyCount "117"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. e4 {[%emt 0:01:08]} c6 {[%emt 0:00:21]} 2. d4 {[%emt 0:02:17]} d5 {[%emt 0:00:05]} 3. Nc3 {[%emt 0:00:04]} b5 {[%emt 0:00:19]} 4. a3 {[%emt 0:04:31]} dxe4 {[%emt 0:00:07]} 5. Nxe4 {[%emt 0:00:04]} Nf6 {[%emt 0:00:02] B15: Caro-Kann: 3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6} 6. Nxf6+ {[%emt 0:02:08]} (6. Bd3 g6 7. Bg5 Bg7 8. Nf3 O-O 9. Qd2 Bf5 10. Nxf6+ exf6 11. Be3 Bxd3 12. Qxd3 Nd7 13. d5 {0-1 (41) Belyakov,B (2487)-Howell,D (2644) Doha 2016}) 6... exf6 {[%emt 0:00:05]} 7. Ne2 {[%emt 0:03:25]} Bd6 {[%emt 0:00:51]} 8. g3 $146 {[%emt 0:04:17]} ({Predecessor:} 8. Ng3 O-O 9. Be2 Be6 10. O-O Nd7 11. Bf3 Qc7 12. Re1 Nb6 13. b3 Bxg3 14. hxg3 {½-½ (56) Ginovart,A (1802)-Roque,G (1583) Montlucon 2011}) 8... Be6 {[%emt 0:07:30]} 9. Bg2 {[%emt 0:00:49]} Qd7 {[%emt 0:02:06]} 10. Bf4 {[%emt 0:07:27]} Na6 {[%emt 0:04:15]} 11. O-O {[%emt 0:05:29]} Nc7 {[%emt 0:01:18]} 12. Bxd6 {[%emt 0:01:47]} Qxd6 {[%emt 0:00:03]} 13. Nf4 {[%emt 0:01:39]} O-O {[%emt 0:00:39]} 14. Qf3 {[%emt 0:02:49]} Bd5 {[%emt 0:03:07]} 15. Nxd5 {[%emt 0:02:06]} Nxd5 {[%emt 0:00:04]} 16. b3 {[%emt 0:01:38]} Rac8 {[%emt 0:01:59]} 17. c4 {[%emt 0:14:19]} Ne7 {[%emt 0:00:57]} 18. Rfe1 {[%emt 0:01:49]} bxc4 {[%emt 0:01:27]} 19. Qe4 {[%emt 0:03:05]} Rc7 {[%emt 0:03:21]} 20. bxc4 {[%emt 0:00:12]} Rd8 {[%emt 0:00:10]} 21. c5 {[%emt 0:06:12]} Qxd4 {[%emt 0:02:30]} 22. Qxd4 {[%emt 0:00:17]} Rxd4 {[%emt 0:00:06]} 23. Rad1 {[%emt 0:00:14]} Rxd1 {[%emt 0:03:00]} 24. Rxd1 {[%emt 0:00:11]} g6 {[%emt 0:01:51]} 25. Rd6 {[%emt 0:04:40]} Kg7 {[%emt 0:01:27]} 26. a4 {[%emt 0:00:24]} a5 {[%emt 0:06:20]} 27. Rd8 {[%emt 0:03:23]} Nc8 {[%emt 0:13:14]} 28. g4 {[%emt 0:01:24]} Ne7 {[%emt 0:04:10]} 29. Ra8 {[%emt 0:03:56]} Rb7 {[%emt 0:00:07]} 30. h3 {[%emt 0:00:39]} Rb1+ {[%emt 0:05:41]} 31. Kh2 {[%emt 0:00:19]} Rb2 {[%emt 0:02:59]} 32. Kg1 $11 {[%emt 0:03:28]} (32. Ra7 $11) 32... Rc2 {[%emt 0:06:33]} 33. Rxa5 {[%emt 0:00:21]} f5 {[%emt 0:00:09]} 34. g5 {[%emt 0:02:35]} f4 {[%emt 0:02:30]} 35. Be4 {[%emt 0:04:15]} Rc4 {[%emt 0:01:58]} 36. f3 {[%emt 0:00:11]} f5 {[%emt 0:04:55]} 37. Bd3 {[%emt 0:02:57]} Rc3 {[%emt 0:00:41]} 38. Be2 {[%emt 0:00:14]} Kf7 {[%emt 0:02:09]} 39. Ra7 {[%emt 0:01:52]} Rxc5 {[%emt 0:00:37]} 40. a5 {[%emt 0:00:12]} Ke6 {[%emt 0:03:21]} 41. a6 {[%emt 0:00:40]} Ra5 {[%emt 0:01:13]} 42. Kf2 {[%emt 0:02:05]} Kd6 {[%emt 0:01:03]} 43. Ke1 {[%emt 0:01:44]} Ra1+ {[%emt 0:02:01]} 44. Kd2 {[%emt 0:00:16]} Ra2+ {[%emt 0:00:03]} 45. Ke1 {[%emt 0:00:13]} c5 {[%emt 0:00:31]} 46. Bb5 {[%emt 0:02:54]} Nc6 {[%emt 0:05:06]} 47. Rxh7 {[%emt 0:01:18]} Ra1+ {[%emt 0:01:22]} 48. Kf2 {[%emt 0:01:38]} Ra2+ {[%emt 0:01:26]} 49. Ke1 {[%emt 0:00:17]} Ne5 {[%emt 0:01:00]} 50. a7 {[%emt 0:01:08]} c4 {[%emt 0:02:09]} 51. Kd1 {[%emt 0:02:21]} Kc5 {[%emt 0:00:27]} 52. Rb7 {[%emt 0:01:02]} Nxf3 {[%emt 0:00:54]} 53. Be8 {[%emt 0:01:07]} Ne5 {[%emt 0:00:31]} 54. Rc7+ {[%emt 0:00:56]} Kd4 {[%emt 0:00:18]} 55. Bc6 {[%emt 0:00:31]} Nxc6 {[%emt 0:01:37]} 56. Rxc6 {[%emt 0:00:04]} f3 {[%emt 0:00:24]} 57. Ke1 {[%emt 0:00:25]} Ke3 {[%emt 0:00:53]} 58. Re6+ {[%emt 0:00:54]} Kf4 {[%emt 0:00:02]} 59. Kf1 {[%emt 0:00:38] Ke5} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "5"]
[White "Diaz, Hector"]
[Black "Gonzalez, Renier"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2007"]
[BlackElo "2451"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,132,30,27,-5,11,0,-3,-16,0,-35,-11,-14,-6,-6,33,-47,-22,-17,-20,-9,-11,-18,6,12,23,21,30,25,41,18,14,0,0,-20,-4,-30,-20,-35,-35,-33,-23,-26,-33,-45,-42,-46,-25,-24,-6,-17,-6,-7,-6,-6,-7,-9,0,0,0,0,0,-32,0,0,0,-18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12,-12,-12,0,0,0,-531,-337,-419,0,-710,-701,-737,-698,-1207,-1276,-1662,-906,-725,0,-1662,-1500,-1641,-1505,-29975,-29976,-29973,-29971,-29980,0,-1345,0]} 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. Nf3 e5 5. dxe5 dxe5 6. Qxd8+ Kxd8 7. Bg5+ f6 8. O-O-O+ Nd7 9. Bh4 {A41: 1 d4 d6: Tartakower System and Modern Defence} (9. Be3 Nh6 10. Bxh6 Bxh6+ 11. e3 c6 12. Ne4 Ke7 13. g4 Bg7 14. Rg1 Nf8 15. h4 h5 16. gxh5 Rxh5 {0-1 (50) Li,C (2732)-Onischuk,V (2637) Riadh 2017}) 9... Ne7 {LiveBook: 3 Games} 10. e4 c6 11. Be2 {The position is equal.} Kc7 12. Kc2 Nc5 $146 ({Predecessor:} 12... a5 13. Rd2 h5 14. h3 g5 15. Bg3 Nc5 16. h4 g4 {1-0 (52) Savolainen,L (2190)-Lehtinen,H (2201) Tampere 1999}) 13. Rd2 (13. Nxe5 {with more complications.} g5 14. Nxc6 Nxc6 15. Bg3+ Ne5 16. h4) 13... Rd8 (13... g5 {keeps more tension.} 14. Bg3 h5 15. h3 a5 16. Rhd1 a4) 14. Rxd8 Kxd8 15. Rd1+ Kc7 16. h3 (16. Nxe5 $14 g5 17. Nxc6 bxc6 18. Bg3+ Kb6 19. f4) 16... Ne6 17. Bg3 Bd7 18. Nd4 Nxd4+ 19. Rxd4 Re8 20. Rd1 Ng8 21. f3 Bf8 22. Bf2 Ra8 23. a3 Nh6 24. Be3 Nf7 25. Rd2 Nd8 26. Bf1 Ne6 27. Rd1 Bc5 28. Bxc5 Nxc5 29. b4 Ne6 30. Kb2 b6 31. b5 Nc5 32. bxc6 Bxc6 33. Nb5+ Bxb5 34. cxb5 Rd8 35. Rxd8 Kxd8 $11 {[%mdl 4096] Endgame KB-KN} 36. Bc4 Ke7 37. Kc3 h5 38. g3 $1 g5 39. Kd2 h4 (39... g4 $5 40. hxg4 hxg4 $11) 40. gxh4 gxh4 41. Ke3 Kf8 42. f4 Kg7 43. fxe5 fxe5 44. Kf3 Kf6 45. Bd5 Kg5 46. Bc4 Nb7 47. Bd5 Nc5 48. Ke3 Nd7 49. Be6 Nf6 50. Bf7 Kh6 51. Kd3 Kg7 52. Be6 Nh5 {[#] Hoping for ...Nf4+.} 53. Bc8 Nf4+ 54. Kc4 $2 {[%mdl 8192]} (54. Ke3 $11) 54... Kf6 55. Bg4 Ng2 $2 (55... Kg5 $19 56. Bc8 Ne2) 56. Kb4 $2 {[%mdl 8192]} (56. Bf3 $11 Nf4 57. Bg4) 56... Kg5 $19 57. Bd7 Kf4 58. Bf5 Ne3 59. Bg6 Kg3 60. Bf5 Kf4 $2 (60... Nd1 $19 {And now ...Kf4 would win.} 61. Kc4 Kf4) 61. Bh7 $2 {[%mdl 8192]} (61. Bg6 $11 Nd1 62. Bf5) 61... Nd1 62. Kc4 Nf2 {[%mdl 64] [#] Double Attack} 63. Kd5 Nxh3 64. Bf5 Nf2 65. Bh7 Nh3 (65... h3 $142 66. Bg8 h2 67. Bf7 h1=Q 68. Kc6 Nxe4 69. Bd5 Qh7 70. Bxe4 Qxe4+ 71. Kc7 Qa4 72. Kd8 Qxa3 73. Kc7 Qe7+ 74. Kc8 e4 75. Kb8 e3 76. Kc8 e2 77. Kb8 e1=Q 78. Ka8 Q1e4+ 79. Kb8 Q7b7#) 66. Bf5 Nf2 $2 {[%mdl 32768] Accuracy: White = 45%, Black = 50%. . Loss on time!?} (66... Ng5 $19 67. Kc4 h3) 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "6"]
[White "Mareco, Sandro"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2661"]
[BlackElo "2512"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,123,16,0,0,0,0,0,0,0,27,22,39,38,46,49,49,49,50,45,47,47,52,48,51,51,52,45,47,41,62,58,65,64,65,63,71,61,74,85,87,87,78,71,71,71,68,45,45,45,77,37,34,0,71,77,122,122,122,122,213,217,202,213,200,210,367,187,285,295,307,308,308,304,325,325,1184,989,1016,1027,1001,1000,984,965,881,881,874,862,816,795,739,645,1311,1252,1198,656,4714,2542]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4 Bd7 {[%cal Bc8d7,Bd7c6,Bc6d5][%mdl 32]} 9. Bg5 Bc6 10. Qxc4 Bd5 11. Qd3 c5 12. dxc5 Nbd7 {[%cal Bb8d7,Bd7c5,Bc5b3][%mdl 32] E05: Open Catalan: 5 Nf3 Be7} 13. Nc3 Nxc5 (13... Bc6 14. b4 a5 15. b5 Bxf3 16. Qxf3 Nxc5 17. Rfd1 Qb6 18. Be3 Rad8 19. h3 Rfe8 20. g4 {0-1 (40) Meier,G (2630)-Hammer,J (2630) chess.com INT 2017}) 14. Qe3 Qa5 15. Qf4 {[#] LiveBook: 4 Games. aiming for b4.} Nb3 16. Bxf6 $146 ({Predecessor:} 16. Rad1 Bc6 17. e4 h6 18. Bxf6 Bxf6 19. e5 Bxf3 20. Qxf3 Bxe5 {0-1 (31) Van der Lende,I (2344)-Vrolijk,L (2419) Leiden 2018}) 16... Bxf6 17. Nxd5 exd5 18. Rad1 d4 19. Nd2 Nxd2 20. Qxd2 Qxa4 21. Bxb7 Rab8 22. Ra1 Qb5 23. Bxa6 Qxb2 24. Qf4 {Black must now prevent Bd3.} Qb4 25. Bd3 Qe7 26. Ra6 {Threatens to win with Qf5.} Be5 27. Qf3 g6 28. Rfa1 Rb7 29. h4 {[%cal Bh2h4,Bh4h5][%mdl 32]} Rc7 30. Kg2 Bg7 31. h5 Qg5 32. Rh1 Rc5 33. Ra7 Qf6 34. Qxf6 Bxf6 35. hxg6 hxg6 36. Rb1 Be5 37. f4 Bc7 38. Rbb7 Bb8 39. Ra8 Bc7 40. Raa7 Bb8 41. Ra4 Rd5 42. Bc4 Rdd8 43. Ra8 Bc7 {[#]} (43... Kg7 $16 44. Kf3 Kf6 45. Bxf7 Rxf7 46. Rb6+ (46. Rbxb8 Rxb8 47. Rxb8 Rd7 $16) 46... Rd6 47. Raxb8 Rfd7) 44. Ra6 $1 $18 Bd6 45. Rbb6 Be7 46. Rxg6+ $1 Kh7 $2 (46... Kh8 {might work better.}) 47. Rgb6 (47. Rg4 $142) 47... Kg7 (47... Rc8 $142) 48. Rb7 Bc5 49. Rc6 Bd6 50. Kf3 Bb8 51. Rc5 Kg6 $2 (51... Rc8) 52. Rg5+ {White is clearly winning.} Kf6 53. g4 Rc8 54. Rf5+ Kg7 55. Rbxf7+ Rxf7 56. Rxf7+ {[%mdl 4096] Endgame KRB-KRB} Kg6 57. f5+ {[%cal Bf4f5,Bf5f6][%mdl 32]} Kg5 58. Rg7+ Kh4 59. Bd3 Rc1 60. g5 Rc5 61. Rg8 Be5 62. f6 {Accuracy: White = 76%, Black = 46%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "6"]
[White "Almeida Quintana, Omar"]
[Black "Juarez Flores, Carlos A."]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2540"]
[BlackElo "2377"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,85,21,46,47,44,45,47,52,62,43,47,34,45,51,38,39,78,76,81,83,82,82,82,23,23,13,75,48,24,34,25,0,14,14,14,10,42,23,16,27,23,17,56,14,16,14,14,14,14,14,14,8,15,15,16,14,14,3,3,3,3,7,14,14,14,14,14,3]} 1. d4 d5 2. Nf3 c6 3. Bf4 Qb6 4. Qc1 Bf5 5. e3 e6 6. c4 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} Nf6 7. Nc3 h6 8. h3 Be7 9. Be2 ({Predecessor:} 9. c5 Qd8 10. b4 O-O 11. Be2 {0-1 (52) Noiroux,K (2179)-Klein,F (2293) Belgium 2015}) 9... O-O 10. O-O Nbd7 {LiveBook: 4 Games} 11. c5 Qd8 12. b4 Ne4 $146 (12... Qc8 13. a4 Bd8 14. b5 Bc7 {0-1 (32) Torre,E (2460)-Karpov,A (2623) Platja d'Aro 2018}) 13. Nxe4 Bxe4 14. Nd2 Bf5 15. Nb3 a6 16. a4 Re8 17. b5 axb5 18. axb5 Bf6 19. Bd6 e5 20. Qd2 exd4 {[#]} 21. Nxd4 (21. Rxa8 $1 $16 Qxa8 22. Ra1 (22. Nxd4 Bxd4 23. exd4 Qa3 $14)) 21... Bxd4 $11 22. exd4 Qf6 (22... Qg5 $11 23. Qxg5 hxg5) 23. bxc6 bxc6 24. Ba6 Ra7 {[#] ...Rea8 is the strong threat.} 25. Be2 Rea8 26. Rxa7 Rxa7 27. Qb2 Qg6 28. Ra1 Rxa1+ $1 29. Qxa1 {And now Qa8+ would win.} Qe6 30. Bf1 {aiming for Qa8+.} Kh7 31. Qa6 Qe1 {The position is equal.} 32. Qxc6 Bd3 {Hoping for ...Nf6.} 33. Qxd7 Qxf1+ 34. Kh2 Qxf2 35. Bg3 Qf5 36. c6 Be4 {( -> ...Qf1)} 37. Qxf5+ Bxf5 {[%mdl 4096] Endgame KB-KB} 38. Kg1 Kg6 39. Kf2 Bd3 40. Ke3 Bb5 41. c7 Ba6 42. Bd6 h5 43. Kf4 {Accuracy: White = 55%, Black = 62%.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "6"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Monzon Perez, Calixto Raul"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2529"]
[BlackElo "1999"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,89,25,24,70,68,72,39,62,47,79,66,90,69,89,86,104,90,92,100,104,102,108,112,141,142,151,154,156,148,147,140,208,136,155,128,185,138,155,163,170,146,152,127,147,133,250,147,160,139,165,160,200,191,241,197,193,175,227,241,215,204,473,476,597,587,978,977,954,920,896,885,29996,29996]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O e6 5. d4 Nbd7 6. Nbd2 Be7 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} 7. Re1 O-O 8. e4 Nxe4 (8... c5 9. e5 Ne8 10. c3 b6 11. Nf1 Bb7 12. h4 Nc7 13. Bf4 Nb8 14. N1h2 {1-0 (46) Fressinet,L (2709)-Nigalidze,G (2527) Yerevan 2014}) 9. Nxe4 dxe4 10. Rxe4 {LiveBook: 4 Games} Nf6 11. Re1 Qb6 12. c3 a5 $146 ({Predecessor:} 12... Rd8 13. Qb3 Qc7 14. Bf4 {1-0 (44) Lizcano,J (1694)-Peinado,E (2121) Santander 2013}) 13. Qb3 Qd8 14. a4 h6 15. Ne5 Nd5 16. Bd2 Bg5 17. Rad1 Bxd2 18. Rxd2 Qc7 19. c4 Nf6 20. h4 h5 21. Bf3 g6 22. Qe3 Kg7 23. b3 Bd7 24. Qf4 Qc8 (24... Qd8 $16 25. d5 exd5) 25. Re3 Be8 26. Bd1 Nh7 (26... Qb8 $16 27. Bf3 (27. Rf3 Nd7 $16) 27... Ng8) 27. Nd3 b6 28. Qe5+ Kg8 29. Nf4 Qb8 30. Qe4 Ra7 31. Qc2 b5 (31... Rd7 $16 {was called for.} 32. Bf3 Rd8) 32. Bf3 (32. axb5 $18 cxb5 33. d5) 32... bxa4 $16 33. bxa4 Rb7 34. Kg2 Rb4 35. Nd3 Rb3 36. Nc5 Rxe3 37. fxe3 e5 (37... g5 $142 38. Qe4 (38. Bxh5 f5 $18) 38... Kh8 39. hxg5 (39. Bxh5 f5 $11) 39... Nxg5) 38. Qc3 $18 exd4 39. exd4 {[%cal Be3d4,Bd4d5][%mdl 32]} f5 $2 {[#]} (39... Qc7 {was necessary.} 40. Rb2 Qd6) 40. d5 Rf6 41. Qxa5 f4 42. dxc6 Rxc6 43. Nd7 Bxd7 44. Rxd7 Rc8 45. Qd5+ {Accuracy: White = 48%, Black = 34%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "6"]
[White "Barrientos, Sergio E"]
[Black "Strikovic, Aleksa"]
[Result "1-0"]
[ECO "E80"]
[WhiteElo "2494"]
[BlackElo "2490"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,73,14,20,9,50,47,94,97,172,171,194,175,181,180,182,153,159,156,175,157,145,157,215,214,290,274,275,268,304,298,289,291,349,329,320,330,404,387,397,271,506,312,353,325,353,331,363,335,371,362,510,518,752,497]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c5 6. Nge2 O-O 7. Be3 Nbd7 8. Qd2 a6 9. d5 Ne5 10. Ng3 e6 {E81: King's Indian: Sämisch: 6th move deviations (including 6 Be3 c6)} 11. Be2 exd5 {LiveBook: 5 Games} 12. exd5 Re8 {The position is equal.} 13. O-O $1 h5 {[#]} 14. Bg5 $1 Qc7 {[#]} (14... b5 $16) 15. f4 $1 $18 {[%cal Rf4e5,Bf3f4,Bf4f5][%mdl 32]} Neg4 16. f5 {Hoping for h3.} Nh7 $146 17. Bxg4 hxg4 18. Bh6 Bd4+ 19. Kh1 Bxf5 20. Nxf5 gxf5 21. Rxf5 Qe7 (21... f6 $16 {keeps fighting.} 22. Qf4 Kh8) 22. Raf1 Qh4 23. Bf4 ({Resist} 23. Rxf7 $6 Re7 $18) 23... Qe7 24. Qd1 Kh8 25. Qxg4 f6 26. Rh5 Rad8 27. Qf5 Qd7 28. Qd3 Qf7 29. Rh6 Qg7 30. Rh3 Be5 $2 (30... Rg8 31. Bg3 b5 32. cxb5 axb5) 31. Bh6 Qe7 32. Bd2 Rg8 33. Ne2 {[%cal Bc3e2,Be2f4,Bf4e6][%mdl 32]} Rg4 34. Nf4 Rdg8 35. g3 Bxb2 (35... b5 $142 36. b3 Bxf4) 36. Ne6 Qf7 37. Bf4 {Accuracy: White = 81%, Black = 34%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "6"]
[White "Zaragatski, Ilja"]
[Black "Gongora Montes, Benjamin"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2465"]
[BlackElo "2143"]
[Annotator "ChessBase"]
[PlyCount "71"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. c4 {[%emt 0:00:00]} g6 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:00]} Bg7 {[%emt 0:00:24]} 3. Bg2 {[%emt 0:00:00]} c5 {[%emt 0:00:23]} 4. Nc3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:28]} 5. a3 {[%emt 0:00:00]} e6 {[%emt 0:01:30]} 6. Rb1 {[%emt 0:00:01]} Nge7 {[%emt 0:00:24]} 7. b4 {[%emt 0:00:08]} d6 {[%emt 0:00:27]} 8. Nf3 {[%emt 0:00:17]} O-O {[%emt 0:01:08]} 9. O-O {[%emt 0:02:14]} b6 {[%emt 0:01:35]} 10. Qb3 {[%emt 0:00:17]} Bb7 {[%emt 0:03:07]} 11. Bb2 {[%emt 0:00:19]} Rb8 {[%emt 0:11:33]} 12. e3 {[%emt 0:00:35]} Qd7 {[%emt 0:27:52]} 13. Rfd1 {[%emt 0:00:46]} cxb4 {[%emt 0:07:03]} 14. axb4 {[%emt 0:00:20]} a5 {[%emt 0:00:14]} 15. Na2 {[%emt 0:13:40]} d5 {[%emt 0:06:32]} 16. Bxg7 {[%emt 0:07:01]} Kxg7 {[%emt 0:00:19]} 17. b5 {[%emt 0:01:09]} Nd8 {[%emt 0:01:42]} 18. Qc3+ {[%emt 0:09:35]} f6 {[%emt 0:01:21]} 19. c5 {[%emt 0:00:07]} bxc5 {[%emt 0:00:39]} 20. Qxc5 {[%emt 0:00:10]} Nf7 {[%emt 0:00:52]} 21. Nc3 {[%emt 0:01:08]} e5 {[%emt 0:01:29]} 22. d4 {[%emt 0:02:15]} e4 {[%emt 0:12:33]} 23. Nd2 {[%emt 0:00:54]} Ng5 {[%emt 0:00:30]} 24. Rdc1 {[%emt 0:04:18]} Ne6 {[%emt 0:07:32]} 25. Qa3 {[%emt 0:00:17]} f5 {[%emt 0:00:13]} 26. Na4 {[%emt 0:00:55]} Rfc8 {[%emt 0:01:43]} 27. Nc5 {[%emt 0:05:28]} Qd6 {[%emt 0:00:40]} 28. Nxe6+ {[%emt 0:00:42]} Qxe6 {[%emt 0:00:05]} 29. Qxa5 {[%emt 0:00:13]} Ra8 {[%emt 0:01:02]} 30. Qb4 {[%emt 0:00:09]} g5 {[%emt 0:01:54]} 31. Nb3 {[%emt 0:03:07]} Rxc1+ {[%emt 0:00:31]} 32. Rxc1 {[%emt 0:00:11]} Rc8 {[%emt 0:01:09]} 33. Nc5 {[%emt 0:03:05]} Qb6 {[%emt 0:02:58]} 34. Ra1 {[%emt 0:02:31]} Ra8 {[%emt 0:03:35]} 35. Rxa8 {[%emt 0:02:25]} Bxa8 {[%emt 0:00:04]} 36. Nxe4 {[%emt 0:03:29]} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "6"]
[White "Gonzalez, Renier"]
[Black "Chinchilla, Alejandro Jose"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2451"]
[BlackElo "2128"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,75,-10,9,5,16,-5,-4,0,4,0,9,-1,63,56,48,7,55,56,79,71,79,71,75,79,85,81,95,87,102,100,105,100,101,100,130,127,158,159,164,146,170,151,222,220,289,267,441,89,398,439,441,433,418,411,433,409,29991,884,890,884,882,887,887,885,845,846]} 1. Nf3 Nf6 2. b4 g6 3. Bb2 Bg7 4. e3 O-O 5. c4 a5 (5... d6 6. Be2 e5 7. d3 e4 8. dxe4 Nxe4 9. Qc1 Nd7 10. Bxg7 Kxg7 11. Nbd2 Nxd2 12. Qxd2 a5 13. b5 b6 14. Nd4 Bb7 15. Bf3 Bxf3 16. Nxf3 {½-½ (58) Kuzubov,Y (2647)-Kokarev,D (2608) Linares 2018}) 6. b5 {A15: English Opening: 1...Nf6} c5 {LiveBook: 3 Games} 7. a4 b6 $146 ({Predecessor:} 7... Qc7 8. Be2 b6 9. O-O Bb7 10. Nc3 d6 11. d4 Nbd7 12. d5 e5 13. Qc2 Bc8 14. Rfe1 Ra7 15. Bc1 Qd8 {½-½ (15) Weigel,H (1996)-Juergens,B (2136) Hamburg 2005}) 8. Be2 {The position is equal.} Bb7 9. O-O d6 10. d4 Ne4 11. Qc2 Qc8 (11... cxd4 $11 12. exd4 Nd7) 12. Bd3 $14 Nf6 13. Nbd2 Bxf3 14. Nxf3 Nbd7 15. d5 Nh5 16. Bxg7 Nxg7 17. Nd2 Ne5 18. Be2 f5 19. g3 Ra7 20. Rae1 e6 21. dxe6 Qxe6 22. f4 Nf7 23. Bf3 Qf6 24. Nb1 Qd8 25. Nc3 Ne8 26. e4 fxe4 (26... Ng7 $16 {was worth a try.} 27. Nd5 Nh6) 27. Bxe4 $18 ({Don't take} 27. Qxe4 $6 Nf6 $16) 27... Nf6 {[#]} 28. Bxg6 $1 {[%mdl 512]} hxg6 $2 (28... Nh6 29. Re6 Kh8) 29. Qxg6+ Kh8 30. Re6 Ng8 31. Rfe1 Nfh6 32. Nd5 {aiming for Re8.} Rg7 33. Qh5 {Threatens to win with Re8.} Kh7 {[#]} (33... Rgf7 $18 34. Rxh6+ Nxh6) 34. Re8 (34. Rxh6+ $142 $1 {[%mdl 512]} Nxh6 35. Re6 Rf6 36. Nxf6+ Qxf6 37. Rxf6 Kg8 38. Rxh6 Kf8 39. Re6 Rd7 40. Qh8+ Kf7 41. Rf6+ Ke7 42. Qf8#) 34... Rxe8 {White is clearly winning.} 35. Rxe8 ({Not} 35. Qxe8 Qh4 $11) 35... Qd7 {[#]} 36. Rxg8 $1 {[%cal Rd5f6][%mdl 576] Pin} Qe6 (36... Rxg8 37. Nf6+) 37. Re8 Qf5 38. Qxf5+ {Accuracy: White = 76%, Black = 39%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "6"]
[White "Cu Hor, Winston Darwin"]
[Black "Mitkov, Nikola"]
[Result "0-1"]
[ECO "A09"]
[WhiteElo "2320"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,104,-31,-43,-46,-50,-35,-33,-36,-44,-12,-40,-24,-23,-19,-14,-31,-66,-64,-89,-77,-72,-29,-81,-71,-94,-68,-80,-72,-80,-55,-27,-38,-45,-25,-26,0,0,0,0,16,0,0,0,0,0,11,0,29,22,43,32,26,0,22,0,0,0,0,0,6,0,0,-30,0,0,106,72,70,28,105,61,104,108,77,0,0,0,0,-14,0,-341,-335,-324,-305,-330,-342,-315,-294,-590,-587,-551,-549,-568,-545,-580,-520]} 1. Nf3 d5 2. c4 d4 3. g3 Nc6 4. Bg2 e5 5. d3 Bb4+ 6. Nfd2 {LiveBook: 13 Games. A09: Réti Opening: 1 Nf3 d5 2 c4} (6. Bd2 a5 7. O-O h6 8. Na3 Nf6 9. Nc2 Be7 10. e3 O-O 11. exd4 exd4 12. Re1 Re8 13. Bf4 Bc5 14. Rxe8+ Nxe8 {½-½ (107) Andriasian,Z (2591)-Vidit,S (2718) chess.com INT 2018}) 6... Be7 7. Na3 Nf6 8. Nc2 {Black is slightly better.} a5 9. a3 a4 $146 ({Predecessor:} 9... O-O 10. O-O Bf5 11. Rb1 a4 12. b4 axb3 13. Rxb3 Ra7 {1-0 (33) Ribli,Z (2585)-Borik,O (2390) Baden-Baden 1981}) 10. Rb1 Bd7 11. O-O O-O 12. b4 axb3 $1 13. Rxb3 Na5 14. Rb1 Ba4 15. Nf3 Qd6 16. Bg5 (16. Rb4 $11 Bc6 17. Bd2) 16... h6 17. Bxf6 Qxf6 ({Stronger than} 17... gxf6 18. Nh4 $14) 18. Qc1 Nb3 19. Qb2 c5 20. Qa2 Na5 21. Nd2 Qg5 22. Ne1 Rab8 23. Bd5 Qh5 24. Ng2 b6 25. Rbe1 Bd6 {[%cal Be7d6,Bd6c7,Bc7d8][%mdl 32]} 26. Ne4 Bc7 27. f4 {[%cal Bf2f4,Bf4f5,Bf5f6][%mdl 32]} Bd7 28. Qd2 Nc6 29. f5 Ne7 30. f6 Nxd5 31. cxd5 Bd8 32. Nh4 Bh3 33. Rf2 Ra8 34. Qc1 $40 {[%mdl 128] White attacks.} Kh7 35. Kh1 Ra7 36. Kg1 Rd7 37. Qc4 g6 (37... Rg8 $11 {remains equal.} 38. Kh1 Ra7) 38. a4 Ra7 39. Ra1 Ra5 (39... Qg4 $11 {keeps the balance.}) 40. Qb3 Bd7 {[%cal Bh3d7,Bd7a4,Ba4b3,Bb3d5,Bd5e4][%mdl 32]} 41. Ra2 Kg8 42. Kg2 ({White should try} 42. Nf3 $16) 42... Bc7 $11 43. Rf1 Rfa8 {[%cal Rd7a4]} 44. Qc2 Bxa4 45. Qd2 $2 {[%mdl 8192] [#]} (45. Qc4 $1 $11 {and White is okay.}) 45... Bb3 $1 $19 {[%csl LRa2,LRd5]} 46. Rxa5 Rxa5 47. d6 Bd8 {aiming for ...Ra2.} 48. Rf2 Bd5 49. Qc2 $2 {[#]} (49. Nf3 {was necessary.}) 49... Ra2 {Black is clearly winning.} 50. Qd1 Qg4 51. h3 Bxe4+ 52. Kh2 Qe6 {[%mdl 64] Double Attack. Accuracy: White = 54%, Black = 54%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.11"]
[Round "6"]
[White "Burgos Figueroa, Carlos E."]
[Black "Calderin Gonzalez, Roberto"]
[Result "1/2-1/2"]
[ECO "B02"]
[WhiteElo "2245"]
[BlackElo "2427"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,105,-62,-61,-46,-80,12,9,0,-9,11,-20,3,25,0,0,0,0,0,-9,0,0,-8,0,15,-36,13,4,18,-31,41,6,133,144,151,59,61,58,60,58,93,86,90,101,103,81,70,18,18,18,25,0,0,0,0,0,0,0,0,9,107,-48,0,0,0,-67,0,0,0,0,0,0,0,0,0,-50,-39,-62,0,-52,0,0,-164,-236,-236,-236,-236,-427,93,79,79,92,88,87,101,54]} 1. e4 {[%cal Be2e4,Be4e5][%mdl 32]} Nf6 2. e5 Nd5 3. c4 Nb6 4. a4 d6 (4... a5 5. Ra3 d6 6. exd6 exd6 7. Rg3 Bf5 8. Nc3 Nc6 9. d4 Nb4 10. Be2 d5 11. c5 Nd7 12. Bg4 {½-½ (23) Hauge,L (2448)-Agdestein,S (2604) Stavanger 2017}) 5. a5 N6d7 6. e6 {B02: Alekhine's Defence: Chase Variation and lines with early Nc3} fxe6 7. d4 {LiveBook: 3 Games} e5 8. Bd3 {[#]Black is slightly better.} Nf6 (8... g6 $1 $17 9. Be3 exd4 10. Bxd4 e5) 9. dxe5 $11 dxe5 10. Nc3 Nc6 11. Bg5 Nb4 $146 ({Predecessor:} 11... e4 12. Bc2 Qxd1+ 13. Rxd1 {0-1 (39) Corado Paz Castillo,R (2093)-Zambrano Rodriguez,A (2175) San Carlos 2012}) 12. Qa4+ $1 c6 13. Qxb4 {Strongly threatening Bc2.} Qxd3 14. Nf3 Qf5 $36 {[%mdl 2048] Threatens to win with ...e4. Black fights for an advantage.} 15. Qc5 Ne4 16. Qe3 Nxc3 17. bxc3 e4 (17... h6 $5 18. Bh4 $8 e4 $11) 18. Nd4 ({Better is} 18. Nd2 $1 $11) 18... Qg6 (18... Qg4 $5 {[%cal Re7e5]} 19. Bf4 Qxg2 $15) 19. O-O e5 20. Nc2 Be6 (20... Bd6 $15) 21. c5 Be7 (21... h6 $11 {remains equal.} 22. Bh4 a6) 22. Bxe7 $16 Kxe7 23. Rfe1 (23. Rab1 $16) 23... Rhd8 $14 24. a6 bxa6 25. Nb4 Bc4 26. Qxe4 Qxe4 27. Rxe4 Bb5 {Black wants to play ...a5!} 28. c4 Ba4 29. f4 (29. Rxe5+ $14 Kf6 30. Re3 Rd1+ 31. Rxd1 Bxd1 32. Rd3 (32. Nxa6 Bh5 $14) (32. Nxc6 Rc8 $16)) 29... a5 $11 30. Rxe5+ Kf6 31. Na6 Rd1+ 32. Rxd1 Bxd1 {[%mdl 4096] Endgame KRB-KRN} 33. Nc7 Rb8 34. Ne8+ Kf7 35. Nd6+ Kf8 {[#]} (35... Kf6 $11 {keeps the balance.}) 36. Re1 $2 (36. Rf5+ $1 $16 Kg8 37. Rf7) 36... Bb3 37. Ra1 a4 38. g4 (38. Kf2 $11) 38... g6 (38... Bc2 $15 39. Kf2 Rb1) 39. Kf2 Rb4 40. Re1 Bxc4 {aiming for ...Bd5.} 41. Re8+ Kg7 {...Bd5 is the strong threat.} 42. Re7+ Kf6 43. Rxa7 Ke6 44. Ke3 Bd5 (44... Bb3 $15) 45. h4 (45. Ne8 $11 Re4+ 46. Kf3 Rd4+ 47. Ke3 Re4+ 48. Kf3 Rb4+ 49. Ke3 Re4+) 45... Rb3+ ({Black should play} 45... Bb3 $15) 46. Kd4 a3 $2 (46... h6 $11) 47. Ne8 (47. f5+ {might work better.} gxf5 48. Nxf5 Rb4+ 49. Kc3 Rc4+ 50. Kd2) 47... Rb4+ $19 48. Kc3 {Intending Ng7+ and mate.} Rxf4 49. Ng7+ $2 (49. Nc7+ Ke5 50. Nxd5 Kxd5 51. Rxh7) 49... Kf6 $2 (49... Ke5 $19 50. Rxa3 Rxg4) 50. g5+ $16 {White is better.} Ke5 51. Re7+ {[#]} Be6 $1 {[%mdl 512]} 52. Nxe6 (52. Rxe6+ Kd5) 52... Rxh4 53. Kb3 {Accuracy: White = 38%, Black = 27%.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "7"]
[White "Almeida Quintana, Omar"]
[Black "Sriram, Jha"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2540"]
[BlackElo "2373"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,59,15,18,19,42,-3,0,-19,-9,-9,-17,-11,0,0,5,0,102,95,196,195,441,438,431,246,234,231,286,212,335,283,460,342,432,415,727,727]} 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5} Be7 10. Nxg6 (10. O-O-O dxc4 11. Bxc4 a6 12. Be2 Nbd7 13. Nxg6 hxg6 14. Kb1 c5 15. d5 exd5 16. Nxd5 Nxd5 17. Qxd5 {0-1 (31) Karjakin,S (2773)-Caruana,F (2822) Saint Louis 2018}) 10... hxg6 11. Rc1 dxc4 12. Bxc4 Nbd7 13. g3 O-O {LiveBook: 9 Games} 14. O-O Rad8 15. Qc2 $146 ({Predecessor:} 15. Ne4 Nxe4 16. fxe4 Bg5 {0-1 (43) Raznikov,D (2434)-Svetushkin,D (2576) Kavala 2011}) 15... c5 16. Ne2 Qb8 17. a4 Rc8 18. Qb3 Nb6 19. Bd3 $36 {[%mdl 2048] White has the initiative.} Nbd7 20. Nf4 {Hoping for Nxe6!} cxd4 {[#]} (20... Rc6 $11) 21. Nxg6 $1 $16 {[%mdl 576] Double Attack} Bc5 (21... Rfe8 $16 {keeps fighting.}) (21... fxg6 22. Qxe6+) 22. Nxf8 $18 dxe3 $2 (22... Rxf8 23. e4 Bd6) 23. Nxd7 Nxd7 24. Bh7+ (24. Bc3 $142) 24... Kxh7 25. Bxe3 g6 26. Kg2 {Bf4 is the strong threat.} b6 (26... Bxe3 {was worth a try.} 27. Qxe3 Rxc1 28. Rxc1 Nb6) 27. Rfd1 Qb7 $2 {[#]} (27... Bxe3 {was called for.} 28. Qxe3 Nf6 29. Rxc8 Qxc8) 28. Qc4 Re8 29. Bxc5 ({Weaker is} 29. Qf4 Kg7 $18) 29... Nxc5 (29... bxc5 $142 30. b4 Nf6 31. bxc5 Nd5) 30. b4 {Accuracy: White = 55%, Black = 41%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "7"]
[White "Cuenca Jimenez, Jose Fernando"]
[Black "Gonzalez, Renier"]
[Result "1-0"]
[ECO "A31"]
[WhiteElo "2512"]
[BlackElo "2451"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 32,65,86,38,99,62,135,150,218,218,210,235,216,181,208,206,291,293,327,208,265,263,358,260,341,279,267,241,242,246,391,387,647,641,1006,997]} 1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 b6 5. f3 Bb7 6. e4 d6 7. Nc3 e6 8. Be3 a6 9. Qd2 Nbd7 10. Be2 Be7 11. O-O O-O 12. a4 Qc7 13. Rfc1 Rac8 14. a5 bxa5 {A31: Symmetrical English: 2 Nf3 Nf6 3 d4} 15. Nb3 Qb8 16. Nxa5 Ba8 17. b4 {[%cal Bb2b4,Bb4a5][%mdl 32] LiveBook: 14 Games} Ne5 (17... d5 $1 $14) 18. Rab1 {[#]} Nc6 $146 {[#]} ({Black should play} 18... d5 $1 $14) ({Predecessor:} 18... Bd8 19. c5 dxc5 20. bxc5 Qc7 21. Bxa6 Qxa5 22. Bxc8 {1-0 (36) Kacheishvili,G (2606)-Kritz,L (2589) ICC INT 2009}) 19. Na4 $1 $16 Nxa5 (19... d5 $16 {was called for.}) 20. bxa5 $18 Qc7 21. c5 d5 22. Bxa6 Rcd8 23. e5 d4 (23... Qxe5 $142 24. Bd4 Qh5) 24. Bxd4 ({Not} 24. exf6 dxe3 25. Qxe3 Bxf6 $15) 24... Nd7 25. Qc3 Nb8 26. Bb5 {Black must now prevent c6.} Nc6 27. Bxc6 Qxc6 28. Qc4 Bg5 29. Rc2 Qd7 30. Bf2 {aiming for c6.} Qc7 (30... Bd5 $142 31. Qg4 Bb3) 31. c6 {[%cal Bc5c6,Bc6c7][%mdl 32]} Qxe5 $2 {[#]} (31... Rd2 32. Rxd2 Bxd2) 32. c7 Rc8 {Black hopes to continue with ...Bf4.} 33. Nb6 {Accuracy: White = 69%, Black = 24%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "7"]
[White "Strikovic, Aleksa"]
[Black "Burgos Figueroa, Carlos E."]
[Result "1-0"]
[ECO "B39"]
[WhiteElo "2490"]
[BlackElo "2245"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,110,19,16,13,0,0,0,24,27,31,15,21,8,7,11,8,0,0,0,19,-31,-31,-32,0,0,0,-31,-7,-47,-15,-49,-15,-27,27,0,119,117,145,98,95,101,111,85,85,79,78,75,78,70,87,72,79,58,58,62,123,131,127,134,110,74,80,57,67,65,66,61,97,88,100,97,90,95,87,80,99,80,237,243,355,254,371,352,425]} 1. c4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. e4 Nc6 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Qd2 Qa5 11. Rc1 d6 12. b3 {B39: Sicilian: Maroczy Bind with 5...Bg7 and 7...Ng4} (12. Be2 Nc5 13. f3 Be6 14. b3 O-O 15. Nd5 Qxd2+ 16. Kxd2 Bxd5 17. cxd5 a5 18. Bxc5 dxc5 19. Rxc5 Rfc8 20. Rc4 {1-0 (40) Andreikin,D (2700)-Popov,I (2609) Tyumen 2012}) 12... Bd7 13. Be2 Bc6 14. Nd5 Qxd2+ 15. Kxd2 {LiveBook: 3 Games} b6 16. b4 Rc8 $146 ({Predecessor:} 16... h5 17. Rhd1 g5 18. g3 Be5 19. Rf1 Rc8 20. f4 gxf4 21. gxf4 {1-0 (41) Nakhapetiane,P (2383)-Okun,L (2370) Moscow 2006}) 17. f4 Nd4 18. Bg4 Bd7 19. Bxd7+ Kxd7 20. Kd3 Nc6 21. b5 Na5 22. Rhd1 e6 23. Nb4 f5 24. exf5 (24. e5 $5) 24... gxf5 25. Na6 Ke7 26. Bd2 Nb7 27. Ke3 Rhd8 28. Be1 Bf6 29. Kf3 Rd7 30. Rc2 Nc5 ({Black should play} 30... h5) 31. Nb4 Ne4 {[#]} (31... e5 $11 {keeps the balance.}) 32. g4 $1 $16 Rc5 33. Nc6+ Rxc6 34. bxc6 Rc7 35. gxf5 exf5 36. Rd5 Ke6 37. a4 Rxc6 38. Rb5 Bd4 39. a5 Bc5 40. axb6 axb6 41. Rb3 d5 (41... Rc8 $14) 42. cxd5+ Kxd5 43. Rd3+ Ke6 44. Ke2 Rc7 45. Rh3 Rg7 46. Rh6+ Kd5 47. Rh5 Ke6 48. Bc3 Ra7 49. Be5 b5 50. Rb2 b4 51. Kd3 Bf8 52. Kc4 h6 $2 {[#]} (52... Rd7 $16) 53. Rg2 $18 Rf7 (53... Rd7 $142 54. Rg6+ Kf7) 54. Ra2 Rh7 (54... Nd6+ $142 55. Kxb4 Rc7) 55. Ra6+ Bd6 {Accuracy: White = 59%, Black = 36%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "7"]
[White "Zaragatski, Ilja"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "2465"]
[BlackElo "2661"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,50,0,7,18,45,45,70,72,84,90,81,75,80,59,65,53,60,70,64,34,45,44,129,130,118,123,191,89,83,8,9,6,6,6,0,4,0,0,0]} 1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. O-O e6 5. d4 cxd4 6. Nxd4 e5 7. Nb3 Be6 {LiveBook: 224 Games} 8. e4 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4} (8. Bg5 Nbd7 9. e4 dxe4 10. Bxe4 Qc7 11. Bg2 Be7 12. Nc3 O-O 13. Re1 Rad8 14. Qe2 h6 15. Bxf6 Bxf6 {½-½ (107) Caruana,F (2802)-Nakamura,H (2786) chess.com INT 2017}) 8... Nxe4 $146 {[#]} ({Predecessor:} 8... Nc6 9. exd5 Nxd5 10. Qe2 Qc7 11. Be3 Rd8 12. Bxd5 Bxd5 13. Nc3 Be6 14. Nb5 Qb8 15. Rad1 b6 16. Rxd8+ Qxd8 {½-½ (25) Banet,J (2517)-Stoeckert,M (2452) ICCF email 2014}) 9. c4 $1 {[%mdl 512]} Nc6 (9... dxc4 10. Qxd8+) 10. cxd5 $1 {White is slightly better.} Bxd5 {[#]} 11. Qe2 $1 {Threatens to win with Rd1.} Bxb3 12. axb3 {[%cal Ba2b3,Bb3b4,Bb4b5][%mdl 32]} Nc5 {[#]} 13. b4 $1 {[%mdl 512]} Ne6 (13... Nxb4 14. Qb5+) 14. b5 $1 {[%cal Rb5c6]} Ncd4 15. Qxe5 Bd6 16. Qd5 O-O 17. Nc3 a5 ({Better is} 17... Bb4 $14) 18. Rd1 $16 Bc5 19. Qxb7 Ra7 {[#]} (19... Rb8 $16 20. Qe4 Qb6) 20. Qe4 (20. Qd5 $1 $18 {and White stays clearly on top.}) 20... Rd7 21. Be3 (21. Kf1 $16) 21... Ne2+ $1 $11 {The position is equal.} 22. Kh1 {Rxd7 is the strong threat.} Nxc3 23. Rxd7 Qxd7 24. bxc3 {Hoping for Qc6.} Bxe3 25. Qxe3 {Black must now prevent b6.} Qxb5 {Accuracy: White = 55%, Black = 38%.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "7"]
[White "Calderin Gonzalez, Roberto"]
[Black "Galvez Dastin, Eduardo"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "2427"]
[BlackElo "2239"]
[Annotator "TA"]
[PlyCount "39"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,39,19,35,368,299,312,298,462,441,431,337,330,283,504,483,523,480,470,420,468,460,479,472,2520,-29999]} 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 {[%cal Bg7g5,Bg5g4][%mdl 32]} 5. g3 g4 6. Nh4 Ne7 7. e4 Ng6 8. Nf5 {A02: Bird's Opening} Bxf5 9. exf5 {[%cal Be4f5,Bf5g6][%mdl 32] LiveBook: 4 Games} O-O $146 {[%mdl 8192]} (9... Qe7+ $14 10. Be2 Nc6) ({Predecessor:} 9... Ne5 10. Bg2 Bc5 11. Nc3 Nbc6 12. d3 Nd4 13. Ne4 Ndf3+ 14. Bxf3 Nxf3+ 15. Kf1 Be7 {1-0 (34) Liu,G (2462)-Chu,W (2399) Shenzhen 2017}) 10. fxg6 {White is winning.} Re8+ 11. Be2 {[#] aiming for gxf7+.} Qf6 (11... hxg6 $142 12. d4 Qf6) 12. gxf7+ $18 Qxf7 13. c3 Qf3 {[#]} 14. Rg1 $1 ({And not} 14. Rf1 Bxg3+ 15. hxg3 Qxg3+ 16. Rf2 Qg1+ 17. Rf1 Qg3+ 18. Rf2 Qg1+ 19. Rf1 Qg3+ $11) 14... Nc6 $2 (14... Qd3 15. b4 Nc6) 15. d4 {[%cal Bd2d4,Bd4d5][%mdl 32]} Re7 {Strongly threatening ...Rae8.} 16. Bg5 Re6 17. d5 {[%mdl 64] Double Attack} Re5 18. Bf4 {White is clearly winning.} ({Less strong is} 18. dxc6 Rae8 $16) 18... Re7 {White must now prevent ...Rae8.} 19. Nd2 ({Not} 19. dxc6 $2 Rae8 $19) 19... Re6 (19... Qxd5 $142 20. Qb3 Qxb3 21. axb3 Rae8) 20. Qb3 $4 {[%mdl 40960] Loss on time!?} (20. Nxf3 $18 gxf3 21. dxe6 fxe2 22. Qxe2) 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "7"]
[White "Juarez Flores, Carlos A."]
[Black "Juarez Flores, Gustavo E."]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2377"]
[BlackElo "2060"]
[Annotator "NA"]
[PlyCount "60"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:03:28]} 2. g3 {[%emt 0:00:47]} g6 {[%emt 0:00:09]} 3. Bg2 {[%emt 0:00:08]} Bg7 {[%emt 0:00:12]} 4. c4 {[%emt 0:00:28]} d6 {[%emt 0:01:06]} 5. Nf3 {[%emt 0:00:18]} O-O {[%emt 0:00:55]} 6. O-O {[%emt 0:00:19]} Nbd7 {[%emt 0:02:23]} 7. b3 {[%emt 0:00:35]} e5 {[%emt 0:01:01]} 8. Bb2 {[%emt 0:00:42]} exd4 {[%emt 0:01:08]} 9. Nxd4 {[%emt 0:00:11]} Re8 {[%emt 0:00:33]} 10. Nc3 {[%emt 0:00:17]} Nc5 {[%emt 0:01:32]} 11. Qc2 {[%emt 0:01:58]} a5 {[%emt 0:01:04]} 12. Rad1 {[%emt 0:02:23]} Bd7 {[%emt 0:02:15]} 13. Rfe1 {[%emt 0:03:22]} Qc8 {[%emt 0:00:41]} 14. Nd5 {[%emt 0:12:32]} Nxd5 {[%emt 0:06:22]} 15. cxd5 {[%emt 0:00:22]} Re7 {[%emt 0:04:14]} 16. e4 {[%emt 0:05:20]} Qf8 {[%emt 0:24:55]} 17. h3 {[%emt 0:04:07]} Rae8 {[%emt 0:02:34]} 18. Bc3 {[%emt 0:00:10]} b6 {[%emt 0:00:50]} 19. Kh2 {[%emt 0:27:16]} h6 {[%emt 0:08:18]} 20. Re2 {[%emt 0:06:46]} Kh7 {[%emt 0:01:48]} 21. Rde1 {[%emt 0:02:32]} Qh8 {[%emt 0:02:05]} 22. Qd2 {[%emt 0:01:13]} Bc8 {[%emt 0:07:42]} 23. Re3 {[%emt 0:00:28]} Bd7 {[%emt 0:01:36]} 24. a3 {[%emt 0:01:57]} a4 {[%emt 0:01:08]} 25. b4 {[%emt 0:00:47]} Nb3 {[%emt 0:00:58]} 26. Nxb3 {[%emt 0:00:13]} axb3 {[%emt 0:00:10]} 27. Bxg7 {[%emt 0:00:33]} Qxg7 {[%emt 0:00:17]} 28. Rxb3 {[%emt 0:00:04]} f5 {[%emt 0:01:36]} 29. Rc1 {[%emt 0:01:08]} Bc8 {[%emt 0:04:27]} 30. exf5 {[%emt 0:03:45]} Kg8 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "7"]
[White "Garcia, Douglas"]
[Black "Gonzalez Zamora, Juan Carlos"]
[Result "0-1"]
[ECO "A50"]
[WhiteElo "2177"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,54,41,-61,0,-23,-30,-68,-60,-105,-97,-177,-151,-145,-150,-170,-183,-207,-207,-418,-429,-423,-424,-740,-754,-744,-747,-706,-652,-1027,-1038,-1033,-1040,-1129,-1051]} 1. d4 Nf6 2. c4 a6 3. Nc3 c5 4. d5 d6 5. e4 g6 6. f4 Bg7 7. Nf3 O-O 8. Bd3 e6 9. a4 exd5 10. cxd5 Bg4 11. O-O Nbd7 12. Qc2 (12. h3 $14 Bxf3 13. Qxf3 (13. Rxf3 c4 $11) (13. gxf3 Nh5 $15)) 12... Bxf3 {A68: Modern Benoni: Four Pawns Attack without 9...Re8} (12... c4 $5 13. Bxc4 Rc8 $14) 13. Rxf3 Rc8 14. Qe2 Re8 {Black is slightly better.} 15. a5 $146 ({Predecessor:} 15. Rf1 Qa5 16. Bd2 c4 17. Bc2 Nxd5 18. Nxd5 Qxd5 19. Bc3 Qc5+ 20. Qf2 Qxf2+ 21. Rxf2 {0-1 (34) Martinez,L-Valiente,C (2310) Asuncion 1989}) 15... Ng4 {[%cal Bf6g4,Bg4f2,Bf2d3,Bd3f4][%mdl 32]} 16. h3 (16. g3 $17) 16... Bd4+ $19 17. Kh1 Qh4 18. Bd2 Nf2+ 19. Kh2 Nf6 {[#] ( -> ...N6g4+)} 20. Rg3 $2 (20. Rxf2 Qxf2 21. Qxf2 Bxf2 22. Bc2) 20... h5 ({Don't take} 20... Nh5 21. Rg4 $19) ({Weaker is} 20... c4 21. Bc2 $19) 21. Be1 {Black is clearly winning.} Qxf4 22. Qf3 (22. Bxf2 $142 Bxf2 23. Qf3) 22... Nxd3 23. Qxf4 Nxf4 24. Rf3 Nxe4 25. g3 Nxc3 26. bxc3 Re2+ 27. Kh1 Rce8 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "8"]
[White "Mareco, Sandro"]
[Black "Almeida Quintana, Omar"]
[Result "1/2-1/2"]
[ECO "A41"]
[WhiteElo "2661"]
[BlackElo "2540"]
[Annotator "TA"]
[PlyCount "200"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,200,58,61,50,59,60,67,57,66,43,58,49,50,47,45,47,43,24,43,31,31,34,50,43,50,49,64,36,44,29,34,33,53,40,47,22,45,50,47,4,18,17,45,27,19,0,0,0,15,12,48,44,68,81,75,64,75,36,31,37,78,77,82,0,0,0,0,0,0,0,11,8,77,79,79,80,93,80,82,97,81,81,249,0,0,0,63,63,59,57,59,0,60,60,60,60,63,63,64,63,66,70,72,66,133,66,76,64,86,71,89,90,93,85,96,66,66,66,66,58,66,66,72,51,66,66,69,69,68,42,45,46,46,41,40,8,42,42,66,66,114,26,26,26,26,26,26,8,8,8,11,0,0,0,0,0,0,0,22,22,22,22,22,22,22,22,22,20,22,22,24,24,24,24,24,22,22,22,22,22,22,20,20,20,20]} 1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. Nc3 Bg4 5. g3 Qc8 (5... Bxf3 6. exf3 Nh6 7. Bg2 Nf5 8. f4 c6 9. d5 c5 10. O-O O-O 11. Re1 Nd7 12. Bh3 Nd4 13. Be3 a6 14. a4 {0-1 (53) Miton,K (2584)-Kuzubov,Y (2699) Riadh 2017}) 6. Bg2 {A41: 1 d4 d6: Tartakower System and Modern Defence} Bh3 7. O-O Bxg2 8. Kxg2 Nf6 9. e4 O-O {LiveBook: 6 Games} 10. Qe2 Nc6 11. d5 Nb4 $146 {[%cal Bc6b4,Bb4a6,Ba6b8,Bb8d7,Bd7e5][%mdl 32]} ({Predecessor:} 11... Nb8 12. Bg5 h6 {½-½ (44) Hakulinen,E (2315)-Lauk,U (2385) Finland 1995}) 12. a3 Na6 13. Rb1 e6 14. b4 Re8 15. Qd3 Nb8 16. dxe6 Rxe6 17. Bb2 Nbd7 18. Nd4 Re8 19. Nb3 b6 20. f3 Ne5 21. Qe2 $1 Qa6 22. Nb5 Qb7 23. Rfd1 Rad8 24. Nc3 Qa6 25. Nd2 c6 26. h3 Qc8 27. f4 Ned7 28. Nf3 Qc7 29. Qd3 Nf8 30. Rd2 a6 31. Re1 b5 32. cxb5 axb5 33. Nd1 Ne6 34. Nf2 d5 35. Bxf6 Bxf6 36. e5 ({Of course not} 36. exd5 $6 Rxd5 37. Qc2 Rxd2 $11) 36... Bg7 37. f5 gxf5 38. Qxf5 c5 {[#]} 39. bxc5 $1 Qxc5 40. Rd3 (40. Ng4 $16) 40... Ra8 $11 41. Red1 Rxa3 42. Rxa3 Qxa3 43. Rxd5 Rb8 44. Rd7 Qf8 (44... Rf8 $11 {remains equal.}) 45. Ne4 $16 Qe8 46. Ra7 $36 {[%mdl 2048] Keeping Black busy.} Nf8 47. Neg5 {[%cal Ra7f7]} h6 48. Nxf7 {And now Nd4 would win.} Qe6 49. Nd6 {Black must now prevent Qe4.} b4 $2 {[#]} (49... Qxf5 $16 {is a better defense.} 50. Nxf5 Ne6) 50. Qb1 $2 (50. Qe4 $1 $18 Rd8 51. Nf5 (51. Qxb4 Bxe5 {[%mdl 64] Remove Defender} 52. Nxe5 Rxd6 $16)) 50... Bxe5 $11 51. Nf5 Bc3 (51... Bf6 $11) 52. Re7 $14 Qf6 53. Qe4 Kh8 {next ...b3 is good for Black.} 54. Ne3 (54. Qd5 $14) 54... Rd8 ({Black should try} 54... Ra8 $11) 55. h4 b3 {Threatening ...b2.} 56. Rb7 Qa6 57. Rxb3 Qa2+ 58. Qc2 Qxc2+ 59. Nxc2 Bg7 60. Ne3 Ne6 (60... Ra8 $14) 61. Nf5 ({White should play} 61. Rb6 $16 Re8 62. Nf5) 61... Rf8 62. Rb5 Kh7 63. g4 Bf6 64. Rb7+ Ng7 65. Kg3 Kg6 66. Nd6 h5 67. g5 Bc3 68. Rb6 Kh7 69. Rc6 Bb2 70. Kg2 Rf4 71. Nc4 Rg4+ 72. Kf1 $1 Ba1 73. Ne3 Re4 74. Kf2 Bd4 75. Nxd4 Rxd4 {[%mdl 4096] Endgame KRN-KRN} 76. Rh6+ Kg8 77. Ng2 {aiming for Rg6.} Rd2+ 78. Kf3 {Threatens to win with Nf4.} Rd3+ 79. Kf4 (79. Ke4 $16 Rg3 80. Nf4) 79... Rd2 $11 80. Ne3 Rf2+ 81. Ke4 {Ra6 is the strong threat.} Rh2 82. Nd5 {Strongly threatening Rf6.} Rxh4+ 83. Ke5 Rh1 84. Nf6+ (84. Kf6 {seems wilder.} Re1 85. Kg6 Ne8 86. Rxh5 Re5 87. Nf4) 84... Kf8 $1 85. g6 Re1+ 86. Ne4 Ke7 87. Rh7 Rxe4+ (87... Kf8 {looks sharper.} 88. Rh8+ Ke7 89. Ra8 h4 90. Ra7+ Kf8) 88. Kxe4 {KR-KN} Kf6 89. Rh8 Kxg6 90. Ke5 Nf5 91. Rg8+ Ng7 92. Ra8 Nf5 93. Kf4 {Ra6+ would kill now.} Ng7 94. Ra6+ Kf7 95. Kg5 Ne6+ 96. Kxh5 Kf6 {The position is equal.} 97. Kg4 Ke5 98. Ra5+ Ke4 99. Ra1 Ke5 100. Re1+ Kd5 {Accuracy: White = 60%, Black = 56%.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "8"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2529"]
[BlackElo "2512"]
[Annotator "TA"]
[PlyCount "130"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,130,-11,-12,-10,-10,-16,-20,-14,-15,0,-10,0,-2,0,-20,0,-14,12,0,0,-12,-1,-17,-20,-37,-25,-33,0,0,0,0,0,0,8,-7,21,19,19,19,29,22,33,32,37,0,0,0,0,0,39,24,16,24,98,86,82,87,93,112,117,8,111,20,17,0,122,0,96,79,59,8,12,12,12,0,13,13,13,13,13,119,102,96,102,0,0,0,0,-479,-417,-443,-430,-354,-387,-272,-182,-770,-752,-1817,-1758,-3021,-1710,-2351,-2027,-8331,-6618,-5114,-5097]} 1. d4 Nf6 2. Nf3 d5 3. g3 e6 4. Bg2 Be7 5. O-O O-O 6. c4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bf4 Bd6 {E05: Open Catalan: 5 Nf3 Be7} 11. Nc3 Bxf4 12. gxf4 a5 13. e3 {LiveBook: 4 Games} Na6 {[#]} 14. Rad1 $146 ({Predecessor:} 14. Rac1 Nb4 15. Rfd1 Ra6 16. Qe2 Nbd5 17. Nb5 Ne7 18. Nd2 Bxg2 19. Kxg2 {½-½ (26) Ivanchuk,V (2710)-Dominguez Perez,L (2723) Varadero 2016}) 14... Nb4 15. Qe2 Qe7 16. Ne5 Bxg2 17. Kxg2 Rfd8 18. Qf3 c6 19. Rg1 Rac8 20. Kh1 c5 21. Nb5 Nc6 22. dxc5 Qxc5 23. Rxd8+ Rxd8 24. Rd1 Rxd1+ 25. Qxd1 g6 26. Nd7 Qe7 (26... Ng4 {with more complications.} 27. Kg2 Qh5 28. Qd6 Qxh2+ 29. Kf3 Qxf2+ 30. Kxg4 Qg2+) 27. Nxf6+ Qxf6 28. Qd7 Qd8 29. Qd6 (29. Qxd8+ {is interesting.} Nxd8 30. Kg2 Kf8 31. Nd6 f6 32. Nc4) 29... Qxd6 (29... Qh4 {keeps more tension.} 30. Kg2 Qg4+ 31. Kf1 e5 32. fxe5 Qxa4 33. Qd5 Qa1+) 30. Nxd6 $11 {[%mdl 4096] Endgame KN-KN} Nd8 $1 31. Kg2 Kf8 32. Kf3 Ke7 33. Nc4 Nc6 34. Ke4 (34. Kg4 $5 {[%cal Rg4g5]}) 34... f6 35. Kd3 Kd7 36. Nd2 e5 37. Ne4 f5 38. Nf6+ Ke6 (38... Kd6 $1 $11) 39. Nxh7 $16 exf4 40. exf4 Kd5 41. Nf8 Ne7 42. Nd7 (42. Kc3 $1 $16) 42... Nc6 (42... Kc6 $11 {keeps the balance.} 43. Nf6 Kc5) 43. Ke3 (43. f3 $16) 43... Ne7 $1 $11 44. Kd3 (44. b3 $11) 44... Nc6 $16 45. Nf8 Ne7 46. h4 Kc5 47. Nd7+ (47. Ne6+ $1 $14 Kd6 48. Nd8) 47... Kd6 48. Ne5 {Hoping for Kc4.} Kc5 $1 49. b3 Kb4 50. Kc2 {Nd3+ is the strong threat.} Kc5 $1 51. Kb2 Kd4 52. Nc4 Nc6 53. Nd6 b6 {[#]} 54. Kc2 (54. Nc8 $1 $16) 54... Nb4+ $11 55. Kd2 Nd5 56. h5 $2 {[%mdl 8192]} (56. Nc4 $11) 56... gxh5 $19 57. Nxf5+ {[#]} Kc5 $1 {[%cal Rc5b4]} 58. Kd3 Nxf4+ 59. Ke4 Ng6 60. f4 $2 (60. Ne3) 60... h4 {[%cal Bh5h4,Bh4h3][%mdl 32] Black is clearly winning.} 61. Nd4 h3 62. Nf3 {[#]} Nh4 $1 {[%mdl 512]} 63. Nh2 (63. Nxh4 h2) 63... Kb4 64. Ke5 Ng6+ 65. Ke4 {[#]} Nxf4 $1 {[%mdl 512] Accuracy: White = 41%, Black = 63%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "8"]
[White "Barrientos, Sergio E"]
[Black "Calderin Gonzalez, Roberto"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2494"]
[BlackElo "2427"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,117,0,-2,0,-11,7,4,18,12,10,12,31,13,37,37,48,51,68,40,48,31,19,25,97,89,130,101,89,108,89,72,106,106,155,147,227,235,213,185,188,185,377,373,376,366,466,406,388,284,291,257,281,278,325,302,387,327,318,321,420,425,426,403,432,369,429,360,394,370,352,326,360,273,311,289,299,235,337,197,173,181,193,143,166,189,184,0,252,161,1282,1224,1237,1207,3403,270,29995,29996]} 1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. c3 Nf6 5. Bd3 O-O 6. O-O Nbd7 7. Re1 e5 8. Nbd2 b6 9. Nf1 Bb7 10. Ng3 {B07: Pirc Defence: Miscellaneous Systems} Re8 11. d5 c6 12. c4 {LiveBook: 8 Games. The position is equal.} a5 13. Bc2 $146 ({Predecessor:} 13. Rb1 Nc5 14. Bf1 Qd7 15. b3 Ba6 16. a3 cxd5 17. exd5 a4 18. bxa4 {0-1 (54) Zubov,A (2604)-Onischuk,V (2608) Lvov 2017}) 13... cxd5 14. cxd5 Ba6 15. h3 Nc5 16. Be3 Nfd7 17. Qd2 Qe7 18. b3 {[%cal Bb2b3,Bb3b4][%mdl 32]} Rec8 19. a3 a4 20. b4 Nb3 21. Bxb3 $1 axb3 22. Qb2 h5 (22... Bc4 $11 {keeps the balance.}) 23. Qxb3 $16 h4 24. Bg5 Bf6 25. Bxf6 Qxf6 26. Nf1 Bc4 27. Qe3 b5 28. N1d2 Ra6 (28... Qf4 $16 29. Qxf4 exf4) 29. Nxc4 $18 Rxc4 30. Nd2 Rc8 31. Qd3 Qf4 $2 (31... Rb8 32. Rec1 Qe7) 32. Qxb5 Ra7 33. Nc4 Nf8 34. Qb6 Rd7 35. Na5 Rc3 36. Nc6 g5 37. Re3 Rc2 38. Rf1 Kg7 39. b5 g4 40. Nb4 Rd2 41. Nd3 Qg5 42. hxg4 Qxg4 43. Qa5 Rc2 44. Qe1 Rb7 45. Qb1 Rc4 46. f4 {[%cal Bf2f4,Bf4f5][%mdl 32]} Ng6 47. f5 Nf8 48. Nf2 Qg5 49. Rf3 Nh7 (49... f6 {was worth a try.} 50. Qb3 Rd4) 50. Nh3 (50. Qd3 $142 Rd4 51. Qc3) 50... Qd2 51. f6+ Kg6 52. Kh2 {aiming for Qb3.} Qd4 53. Nf2 Qd2 54. Nh3 (54. Rh3 $142) 54... Qd4 $1 55. a4 {[%mdl 64] Deflection} Rxa4 $2 (55... Qxe4 56. a5 Qxb1 57. Rxb1 Ra4) 56. Qc1 {Threatening mate with Qc8.} Rc4 57. Qa3 {White threatens Qa8 and mate.} Qc5 {[#]} 58. Qd3 $2 (58. Rg3+ $3 {[%mdl 512]} Kh6 {[#]} (58... hxg3+ 59. Qxg3+) 59. Qf3 $3 {[%mdl 512]} Rc3 60. Qg4 $3 {[%mdl 512]} hxg3+ 61. Kh1 Nxf6 62. Rxf6+ Kh7 63. Ng5+ {[%mdl 64] Double Attack} Kh8 64. Rh6+ Kg7 65. Ne6+ {[%mdl 64] Double Attack, Discovered Attack (Double check)} Kxh6 66. Qg7+ Kh5 67. Qg5#) 58... Rd4 $2 {[#]} (58... Qd4 $18) 59. Rg3+ $1 {[%mdl 512] Accuracy: White = 60%, Black = 34%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "8"]
[White "Strikovic, Aleksa"]
[Black "Zaragatski, Ilja"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2490"]
[BlackElo "2465"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,84,64,57,3,87,83,108,117,124,119,116,118,116,128,158,130,125,139,167,161,171,166,178,166,183,182,254,251,239,109,103,73,75,75,75,74,68,71,79,73,73,64,64,64,64,64,65,64,61,54,46,-190,-197,-203,-188,-207,-206,-243,-252,-258,-247,-310,-308]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bc4 Ke8 7. Nf3 {[%cal Bg1f3,Bf3d2,Bd2c4,Bc4e5][%mdl 32]} Bd6 8. Bg5 Nbd7 9. O-O-O {B07: Pirc Defence: Miscellaneous Systems} (9. Nd2 c6 10. Bb3 Bc7 11. O-O Nc5 12. Be3 Ne6 13. f3 Ke7 14. Rfd1 Rd8 15. Ne2 Nh5 16. g3 Nf6 {½-½ (50) Shomoev,A (2550)-Najer,E (2682) Sochi 2017}) 9... a6 10. a4 h6 11. Bh4 Kf8 12. Nd2 g6 {LiveBook: 3 Games} 13. Bb3 (13. f3 $14) 13... Kg7 (13... b5 $11 {keeps the balance.}) 14. Nc4 $16 {[#]} Be7 $146 ({Predecessor:} 14... Bb4 15. Nxe5 Bxc3 16. Nxd7 Bxb2+ 17. Kxb2 Nxd7 {1-0 (25) Berelowitsch,A (2566)-Strikovic,A (2557) Marrakesh 2010}) 15. Bg3 Nh5 {[%cal Bf6h5,Bh5f4,Bf4h3][%mdl 32]} 16. Bxe5+ Nxe5 17. Nxe5 Nf4 18. g3 Nh3 19. Rd2 {And now Nd5 would win.} ({Don't play} 19. Nxf7 $6 Rf8 $14) 19... Bc5 20. Kb1 ({Much less strong is} 20. Nxf7 Rf8) 20... f6 21. Nd3 Bb6 22. f4 Re8 23. e5 fxe5 24. Nxe5 Bf5 (24... Nf2 {keeps fighting.}) 25. Rhd1 $18 {Rd7+! is the strong threat.} Bc5 {[#]} 26. Bd5 (26. g4 $1 $18 {[%cal Rg4f5] and the rest is easy.} Nxf4 27. gxf5 Rxe5 28. Rd7+ Kf6 29. Rf1 (29. Rxc7 gxf5 30. Rf1 Ne6 $16)) 26... c6 $16 27. Bg2 {Black must now prevent Ne4.} Nf2 28. Rf1 Ng4 29. Nxg4 Bxg4 30. Ne4 Bb4 31. Rd4 a5 32. c3 Bf8 33. Kc1 Rad8 34. Rxd8 Rxd8 35. Nf2 Be6 36. Be4 Re8 37. Rd1 $2 {[#]} (37. Kc2 $14 {keeps the upper hand.}) 37... Bc5 $19 38. Nd3 Be3+ 39. Kc2 Bg4 40. Bg2 Bxd1+ 41. Kxd1 Bg1 42. h4 Re3 {Precision: White = 52%, Black = 72%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "8"]
[White "Gonzalez, Renier"]
[Black "Juarez Flores, Roberto"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2451"]
[BlackElo "2109"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,133,37,29,26,14,18,24,27,24,39,41,43,43,36,48,50,42,27,78,29,58,16,14,-16,-17,-15,52,9,72,45,267,30,101,104,91,38,79,79,179,158,179,105,225,40,148,145,133,79,77,70,159,51,60,45,42,52,119,121,123,0,115,0,123,112,188,181,179,204,229,229,221,221,221,221,232,221,232,232,232,232,532,496,481,545,484,388,377,331,695,444,674,818,784,770,616,665,692,620,1937,1949,1802,1775,1616,1467,1264,1068,29957,29961,6270,2965,2860,1725,2616,1669,6098,6406,29993,29994,29995,5600,29996,29997,29998,29999]} 1. Nf3 e6 2. g3 f5 3. Bg2 Nf6 4. O-O g6 (4... d5 5. d3 Bd6 6. c4 dxc4 7. dxc4 O-O 8. Nc3 Nc6 9. e4 e5 10. Bg5 Kh8 11. exf5 Bxf5 12. Nh4 Be6 13. Nd5 Qd7 14. Nxf6 gxf6 {0-1 (53) Kramnik,V (2812)-Carlsen,M (2855) Leuven 2016}) 5. c4 Bg7 6. Nc3 {A04: Unusual lines after 1 Nf3 and King's Indian Attack} O-O {LiveBook: 3 Games} 7. d3 d6 8. Rb1 {The position is equal.} a5 $146 ({Predecessor:} 8... Nc6 9. b4 Ne7 10. c5 c6 11. cxd6 Qxd6 12. Bf4 {1-0 (27) Pietzsch,M (2185)-Isler,B (1885) Kiel 2018}) 9. a3 {[%cal Ba2a3,Ba3b4,Bb4b5,Bb5b6][%mdl 32]} Nc6 10. b4 axb4 11. axb4 Nh5 12. Bd2 h6 13. b5 Ne7 14. e3 Qe8 (14... e5 $11) 15. Qb3 g5 16. b6 {Threatens to win with Nb5.} c6 $1 17. Ra1 Rxa1 18. Rxa1 f4 ({Better is} 18... e5 $11) 19. Ra8 fxg3 (19... fxe3 $11 20. fxe3 (20. Bxe3 Nf5 $11) 20... g4) 20. hxg3 $16 Qf7 $2 (20... g4 $14 21. Nh4 (21. Nh2 Qf7 $14) 21... Qf7) 21. Be1 $2 (21. Ne4 $1 $18 {[%cal Re4d6]} Rd8 22. c5 dxc5 23. Nxc5) 21... d5 (21... g4 $11 22. Nh4 d5) 22. d4 Ng6 23. Na4 (23. cxd5 $16 exd5 24. Nd2) 23... Nf6 24. Nc5 Ng4 (24... Nd7 $16 {was necessary.}) 25. Qc2 $18 Ne7 26. Nh2 ({White should try} 26. e4 $18) 26... Nf6 (26... Nxh2 $16 27. Kxh2 dxc4) 27. Nd3 $2 (27. Rb8 $18) 27... Ng6 (27... Nd7 $1 $14) 28. Bb4 $16 Re8 {[#]} 29. Bd6 (29. Bh3 $142 $1) 29... Nd7 30. Bc7 Rf8 (30... h5 $14) 31. f4 (31. Bf3 $16) 31... gxf4 $14 32. Nxf4 Nxf4 33. gxf4 Nf6 (33... dxc4 $14 34. Qxc4 Kh8) 34. Bd6 $16 Rd8 35. Bc7 Rf8 $1 36. Bd6 Rd8 $1 {[#]} 37. c5 $1 $36 {[%mdl 2048] White is on the roll.} Bf8 (37... h5 $16 {might work better.} 38. Nf3 Ne4) 38. Be5 $18 Be7 39. Bf3 Qh7 40. Qxh7+ Kxh7 41. Bxf6 Bxf6 42. Ng4 Bg7 43. Kf2 Rg8 44. Ne5 Bxe5 45. dxe5 {[%mdl 4096] Endgame KRB-KRB} ({But not} 45. fxe5 $6 Kg7 $16) 45... Bd7 $2 (45... Kg6 {was worth a try.} 46. e4 dxe4) 46. Ra7 Rb8 47. Bh5 Kg7 48. Kg3 Kf8 49. Kh4 Kg7 $2 (49... Be8 50. Bxe8 Kxe8) 50. Kg4 Bc8 (50... Kh7 $142 51. Kf3 Kg8) 51. Be8 Kf8 52. Bg6 Bd7 53. Kh5 Kg7 54. Ra1 Be8 55. Rg1 Bf7 56. Bxf7+ Kxf7 {KR-KR} 57. Rg6 Ra8 58. Rxh6 Ra5 59. Rh7+ Ke8 60. Rxb7 Rxc5 61. Rc7 Kd8 62. Kg6 Rc3 63. f5 exf5 64. e6 {[%cal Be5e6,Be6e7][%mdl 32]} Rb3 65. e7+ Ke8 66. Kf6 Rxe3 67. Rc8+ {Accuracy: White = 59%, Black = 28%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "8"]
[White "Juarez Flores, Carlos A."]
[Black "Mitkov, Nikola"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2377"]
[BlackElo "2477"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,63,-47,-34,-34,-31,-35,-33,-23,136,-27,-25,-22,-14,-49,-47,-50,-50,-54,-41,-70,-7,-43,0,0,0,0,50,47,53,9,144,142,137,38,532,529,523,533,507,520,835,827,823,820]} 1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 dxc4 7. e3 b5 8. a4 c6 9. Be2 Nbd7 {D43: Semi-Slav: 5 Bg5 h6} 10. O-O Qb6 11. Qc2 Bb7 {LiveBook: 4 Games. Black is slightly better.} 12. Rfd1 (12. b3 cxb3 13. Qxb3 Bxc3 14. Qxc3 b4 15. Qc2 {1-0 (63) Mamedyarov,S (2799)-Le,Q (2737) Huaian 2017}) 12... a6 13. Ne5 Nxe5 $146 ({Predecessor:} 13... g5 14. Bg3 h5 15. Nxd7 Nxd7 16. Ne4 h4 17. Bd6 Bxd6 18. Nxd6+ Ke7 19. Nxb7 Qxb7 20. axb5 axb5 21. e4 Nf6 22. h3 Rxa1 23. Rxa1 Qb6 24. Rd1 {½-½ (24) Dragicevic,D (2251)-Schon,E (2126) Canberra 2010}) 14. dxe5 Bxc3 $2 {[#]} (14... Nd5 $11) 15. bxc3 $2 ({White must play} 15. Bxf6 $1 $16 gxf6 16. Qxc3) 15... Nd5 $11 16. e4 Nf4 17. Bf1 Ng6 18. Bg3 O-O 19. Kh1 Rfd8 20. f4 {[%cal Bf2f4,Bf4f5,Bf5f6,Bf6g7][%mdl 32]} Qc7 (20... Rxd1 $15 21. Rxd1 c5) 21. Qf2 c5 {And now ...Rxd1 would win.} 22. Re1 $1 Rd7 23. Rab1 Qc6 24. f5 Nf8 25. f6 Rad8 (25... g5 $1 $11 {keeps the balance.}) 26. fxg7 $16 Ng6 27. Bh4 (27. h4 $16) 27... Rd3 $2 {[%mdl 8192] [#]} ({Black should try} 27... Nxh4 $14 28. Qxh4 Kxg7) 28. Bxd8 $18 {White is clearly winning.} Rxd8 29. Rbd1 Qc7 30. axb5 Rxd1 (30... axb5 $142 31. Qf6 Rd7 32. Rxd7 Qxd7) 31. Rxd1 Qxe5 32. Rd7 {Accuracy: White = 61%, Black = 35%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "8"]
[White "Cu Hor, Winston Darwin"]
[Black "Chinchilla, Alejandro Jose"]
[Result "1/2-1/2"]
[ECO "A09"]
[WhiteElo "2320"]
[BlackElo "2128"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,108,0,-21,-20,-18,-22,-2,-29,-4,-52,-56,-56,-52,-47,-67,-111,0,0,0,-47,-43,-64,-44,-50,-43,-46,-45,-57,0,0,0,0,0,-31,0,0,50,0,8,-48,0,-13,0,-29,28,-34,-34,-23,-20,-17,-18,-21,0,-30,6,8,6,6,6,10,4,8,6,11,12,12,10,0,8,0,0,0,0,0,8,0,0,0,0,0,0,0,89,0,0,0,8,0,0,0,16,0,0,-8,-8]} 1. Nf3 d5 2. c4 d4 3. b4 c5 4. e3 dxe3 5. fxe3 cxb4 6. d4 Nf6 {A09: Réti Opening: 1 Nf3 d5 2 c4} 7. Bd3 g6 8. O-O (8. a3 bxa3 9. O-O Bg7 10. Nc3 O-O 11. Bxa3 b6 12. Kh1 Nc6 13. Rc1 Bg4 14. h3 Bxf3 15. Qxf3 {1-0 (45) Wei,Y (2735)-Inarkiev,E (2690) Magas 2018}) 8... Bg7 {LiveBook: 5 Games} 9. Nbd2 O-O 10. Bb2 Nc6 11. Qc2 $146 ({Predecessor:} 11. Qe2 Bg4 12. h3 Bxf3 13. Nxf3 Nd7 14. Rad1 {0-1 (39) Mokhov,L (2149)-Sosnin,M Berdsk 2008}) 11... Bg4 12. Kh1 Nd7 13. Rab1 e5 14. d5 Nc5 15. Be2 e4 (15... Na5 $17) 16. Bxg7 $11 Kxg7 17. dxc6 (17. Nxe4 Nxe4 18. dxc6 Qe7 $11) 17... exf3 18. gxf3 Bf5 19. e4 $1 Bh3 20. cxb7 Rb8 21. Rfd1 Qg5 (21... Rxb7 $15 22. Nb3 Qg5) 22. Bf1 Bxf1 23. Nxf1 {aiming for Rd5.} Rxb7 (23... Qf6 $5 {[%cal Rf6f3]}) 24. Qf2 {[#] Hoping for Rd5.} (24. Rd5 $5 {[%cal Rd5g5]} Qe7 25. Ne3 $11) 24... Ne6 25. Ne3 Nf4 26. Rg1 Qe5 27. Qh4 (27. Ng4 $11 Qc7 28. Qd2) 27... f6 {[%cal Bf7f6,Bf6f5,Bf5e4][%mdl 32]} 28. Rbd1 Kh8 29. Qh6 {[%cal Rh6f8]} (29. Nd5 $5 {[%cal Rd5f4]} g5 30. Qg3 $11) 29... Rg8 (29... Rbf7 $142) 30. Rg4 (30. c5 $11) 30... Ne6 $15 31. Nd5 f5 32. Rg2 fxe4 33. Re1 Rf7 (33... Qg7 {is more complex.} 34. Qxg7+ Nxg7 35. Rxe4 a5 36. Rd2 Rd8) 34. Qe3 (34. Rxe4 {looks sharper.} Qd6 35. Qe3 Ng7 36. Rd2 Rgf8 37. c5) 34... Rxf3 {[#]} (34... Rgf8 {seems wilder.} 35. Qxe4 Qxe4 36. Rxe4 Nc5 37. Re5 Nd3) 35. Qxf3 $1 {[%mdl 512]} exf3 36. Rxe5 fxg2+ 37. Kxg2 $11 {[%mdl 4096] Endgame KRN-KRN} Nd4 38. Nxb4 Rb8 39. Nd3 Nf5 40. Kf3 Kg7 41. Rd5 Re8 42. c5 Kf6 43. Rd7 Re3+ 44. Kf2 Re7 45. Rxe7 Nxe7 {KN-KN} 46. Ke3 g5 47. Ke4 h5 48. Ne5 g4 (48... Ke6 $11 {remains equal.}) 49. Nd3 ({White should play} 49. c6 $16) 49... Kg5 {The position is equal.} 50. Nf4 h4 51. Ne6+ Kf6 52. Nf4 Kg5 53. Ne6+ Kf6 54. Nd4 g3 {Accuracy: White = 37%, Black = 56%.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.12"]
[Round "8"]
[White "Cardenas Carbajal, Nilson"]
[Black "Lorenzana, Wilson Estuardo"]
[Result "1/2-1/2"]
[ECO "B21"]
[WhiteElo "2095"]
[BlackElo "2285"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,106,56,60,52,52,52,56,53,61,56,74,67,81,43,52,0,0,0,16,-21,-35,-23,-11,-14,0,0,0,-30,-20,-53,22,17,28,25,15,18,33,12,34,20,118,0,114,109,109,109,127,127,153,142,188,151,143,139,215,198,184,81,122,0,143,30,75,76,75,39,39,39,90,39,39,25,25,25,25,25,25,25,25,25,25,25,25,0,25,0,25,25,25,18,18,18,18]} 1. e4 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 d6 5. Nf3 e6 6. c4 {B40: Sicilian: 2...e6, Unusual lines} Nd7 7. O-O Ngf6 8. Nc3 a6 {LiveBook: 8 Games} 9. Bf4 (9. h3 Qc7 10. Be3 Be7 11. Rc1 b6 12. Qe2 Bb7 13. Bb1 O-O {½-½ (48) Esserman,M (2446)-Fedorowicz,J (2440) ICC INT 2011}) 9... Qc7 10. Qd2 Be7 11. Rac1 O-O $146 ({Predecessor:} 11... Ne5 12. c5 Nxf3+ 13. gxf3 {1-0 (25) Spaan,T (2315)-De Beer,D Netherlands 1994}) 12. Rfd1 Ne5 13. Be2 b6 14. Bg5 Rd8 15. Nxe5 (15. Nd4 $14) 15... dxe5 $11 16. Qe3 Bb7 17. a3 h6 18. Bh4 Rxd1+ 19. Rxd1 Ng4 20. Qg3 {And now Bxe7 would win.} Nf6 21. Qe3 Rd8 22. Rxd8+ Bxd8 (22... Qxd8 $15 23. Bxf6 Bxf6) 23. b4 Nd7 24. Bxd8 Qxd8 25. f3 Kf8 26. Na4 Bc6 27. Nb2 f5 {[#]} (27... Qe7 $11 {remains equal.}) 28. Nd3 (28. Qd3 $1 $16 {[%cal Rd3d6]} Qe7 29. exf5) 28... Qf6 (28... fxe4 $11 29. fxe4 Qe7) 29. c5 $16 b5 30. Nf2 Qe7 31. Bd3 Qf6 32. Qd2 f4 33. Bc2 {Hoping for Qd6+.} Qe7 34. Bb3 h5 (34... Kf7 $16 35. Nd3 g5) 35. Qa2 $18 Kf7 36. Nh3 (36. Nd3 $18) 36... Kf6 37. Nf2 ({White should play} 37. g3 $16) 37... g5 {[#]} (37... Kf7 $11) 38. a4 (38. Nd3 $1 $16) 38... Nf8 39. axb5 axb5 40. Qd2 (40. Kf1 {keeps more tension.} Ng6 41. Qa6 Qb7 42. Qa5 Ne7 43. Bd1) 40... Qd7 41. Qxd7 Bxd7 $14 {[%mdl 4096] Endgame KBN-KBN} ({Better is} 41... Nxd7 $14 42. Nd3 Nb8) 42. Kf1 ({White should try} 42. h4 $16) 42... Bc6 43. h3 Nd7 44. Ke2 Nb8 45. Kd2 Bd7 46. Kc3 Nc6 47. Bd1 Nd4 48. Nd3 Bc6 49. Nf2 Bd7 50. Nd3 Bc6 51. Ne1 Bd7 52. Nc2 Nxc2 53. Kxc2 h4 {Accuracy: White = 48%, Black = 56%.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.13"]
[Round "9"]
[White "Almeida Quintana, Omar"]
[Black "Gonzalez, Renier"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2540"]
[BlackElo "2451"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,51,77,66,50,44,47,48,41,116,116,157,160,165,158,149,152,157,162,511,502,480,308,566,566,547,566,1044,981,1206,1169]} 1. d4 Nf6 2. c4 d6 3. Nf3 Bg4 4. Nc3 Nbd7 5. e4 e5 6. Be2 Be7 7. O-O O-O 8. Be3 c6 9. d5 cxd5 10. cxd5 {A53: Old Indian Defence without Nf3} Bxf3 11. Bxf3 Qb8 12. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Rc8 {LiveBook: 6 Games} 13. Be2 Bd8 14. a5 a6 15. Ra3 {[#]} Nc5 $146 (15... b6 $14) ({Predecessor:} 15... g6 16. Qb1 h5 17. h3 Kg7 {½-½ (33) Lalic,B (2488)-Illescas Cordoba,M (2608) Dos Hermanas 2006}) 16. Qb1 $16 b6 17. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Ncd7 18. b5 $1 bxa5 19. bxa6 Nc5 {[#]} 20. Bxc5 $1 Rxc5 $2 (20... Qxb1 21. Rxb1 Rxc5) 21. Rb3 $18 Qc8 {[#]} 22. Na4 $1 Nd7 $2 (22... Rc2) 23. Bg4 {White is clearly winning.} Rc4 24. Rb7 Bc7 25. Bxd7 Qxd7 26. Nb6 {[%mdl 64] Double Attack. Accuracy: White = 88%, Black = 28%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.13"]
[Round "9"]
[White "Cuenca Jimenez, Jose Fernando"]
[Black "Barrientos, Sergio E"]
[Result "1/2-1/2"]
[ECO "B24"]
[WhiteElo "2512"]
[BlackElo "2494"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,83,-13,-20,-12,-26,38,36,28,33,50,51,48,39,48,35,49,37,31,0,0,0,0,0,0,-29,0,0,0,0,0,0,6,10,2,-7,-8,-10,-8,-10,0,0,21,21,21,21,25,21,33,8,8,8,8,8,8,8,19,0,0,0,0,0,0,0,0,0,1,1,1,1]} 1. e4 c5 2. Nc3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. Nf3 Bg7 6. O-O d6 7. d3 {B31: Sicilian: 2...Nc6 3 Bb5 g6} e5 8. Ne1 (8. a3 a5 9. Nd2 Ne7 10. Na4 Be6 11. Nc4 O-O 12. Bd2 d5 13. Ncb6 Ra6 14. Qe1 Rxb6 15. Bxa5 {1-0 (45) Delgado Ramirez,N (2602)-Diamant,A (2533) Brasilia 2018}) 8... Ne7 9. f4 {LiveBook: 4 Games} exf4 10. Bxf4 O-O (10... h6 $11) 11. Qd2 $14 Rb8 12. Rb1 Be6 13. Nf3 Re8 $146 ({Predecessor:} 13... Qc7 14. b3 Rb7 15. Ne2 {1-0 (32) Jayakumaar,S (2223)-Shet,P (1963) Bengaluru 2015}) 14. Kh1 Rb7 15. b3 Rd7 16. e5 Nd5 17. Ne4 Nxf4 18. Qxf4 {[%cal Re4d6]} dxe5 $1 19. Nxe5 {[%mdl 64] [#] Double Attack} Rc7 20. Nf3 Rce7 21. Nxc5 Bf5 22. g4 Bc8 23. Ne4 f5 24. gxf5 Bxf5 25. Nd6 {[%mdl 64] [#] Double Attack} Be5 26. Nxe5 Qxd6 27. Ng4 {Nh6+ is the strong threat.} Qxf4 28. Rxf4 {Black must now prevent Nf6+.} Re1+ 29. Rxe1 Rxe1+ $11 {[%mdl 4096] Endgame KRB-KRN} 30. Kg2 Re2+ 31. Kg3 Kg7 32. Ra4 Bxg4 {The position is equal.} 33. Rxg4 {aiming for Rc4.} Rxc2 {KR-KR} 34. Ra4 h5 35. Rxa7+ Kf6 36. Rd7 Rxa2 37. Rd6+ Kf5 38. Rxc6 h4+ {[%mdl 64] Decoy} 39. Kxh4 Rxh2+ 40. Kg3 Rd2 41. Rc3 Ke5 42. b4 {Accuracy: White = 54%, Black = 48%.} 1/2-1/2

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.13"]
[Round "9"]
[White "Mitkov, Nikola"]
[Black "Reyes Najera, Carlos A."]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2477"]
[BlackElo "2124"]
[Annotator "TA"]
[PlyCount "40"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,40,0,-19,64,0,0,0,0,0,0,-33,32,45,292,271,572,544,783,752,1201,1201,1162,948,1176,1156,29983,29984,29998]} 1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bb5+ Bd7 6. Bc4 {B23: Closed Sicilian: Lines without g3} (6. a4 Nc6 7. O-O e6 8. Bxc6 Bxc6 9. Kh1 Nf6 10. d3 O-O 11. Be3 b6 12. Qe1 d5 13. e5 d4 14. exf6 Bxf6 {1-0 (67) Amonatov,F (2636)-Kokarev,D (2615) Riadh 2017}) 6... Nc6 7. d3 e6 8. O-O {LiveBook: 30 Games. The position is equal.} Na5 ({Black should try} 8... Nge7 $11) 9. Qe1 (9. f5 $1 $14) 9... Ne7 $11 10. a4 $146 ({Predecessor:} 10. f5 Nxc4 11. dxc4 O-O 12. fxg6 fxg6 13. Bg5 h6 14. Qh4 Rxf3 15. Bxe7 Rxf1+ 16. Rxf1 g5 17. Bxd8 gxh4 18. Bf6 Rf8 19. Bxg7 Rxf1+ 20. Kxf1 {½-½ (20) Thorpe,T (1892)-Rysbayeva,A (2157) Cardiff 2017}) 10... O-O 11. Ba2 Nac6 12. f5 exf5 (12... gxf5 $15 13. Qg3 Ne5) 13. Qh4 $1 $14 Be8 $2 ({Better is} 13... c4 $14) 14. Bh6 $18 Qd7 $2 (14... Bd7 {is more resistant.} 15. Ng5 (15. Bxg7 Kxg7 16. g4 Ng8 $11) 15... Bf6 16. Bxf8 Bxg5 17. Qxg5 Qxf8 18. exf5 Nxf5) 15. Ng5 {[#] Black must now prevent Bxg7.} ({Stronger than} 15. Bxg7 Kxg7 16. d4 (16. Ng5 h6 $15) 16... cxd4 $11) 15... Bf6 16. Bxf8 Bxg5 17. Qxg5 {Qh6 would kill now.} Kxf8 18. Qh6+ Kg8 19. Rf4 {[#] White threatens Rh4 and mate.} fxe4 20. Nxe4 Na5 {Accuracy: White = 65%, Black = 15%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.13"]
[Round "9"]
[White "Zaragatski, Ilja"]
[Black "Juarez Flores, Carlos A."]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2465"]
[BlackElo "2377"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,107,43,0,0,0,5,7,5,-18,0,0,0,-18,0,-21,-2,-19,-12,-23,0,0,0,0,0,0,0,0,0,0,50,0,0,4,7,7,23,9,16,7,22,14,98,32,161,168,158,160,165,168,163,170,228,231,377,376,1754,285,278,278,268,270,265,263,254,245,254,246,227,185,237,116,427,416,402,325,5414,3031,5551,6136,12819,5389,12838,12836,12830,6410,5405,2256]} 1. Nf3 d5 2. g3 c6 3. c4 Bg4 4. Bg2 e6 {[%cal Be7e6,Be6d5][%mdl 32]} 5. O-O Nd7 6. cxd5 exd5 7. d3 Ngf6 8. Nc3 Be7 9. h3 Bh5 10. e4 {A11: English Opening: 1...c6} dxe4 (10... O-O 11. exd5 Nxd5 12. Nxd5 cxd5 13. Be3 Bc5 14. d4 Bd6 15. Rc1 Re8 16. Re1 Nb6 17. g4 Bg6 18. Ne5 Be4 19. Qb3 Bxg2 20. Kxg2 h5 {0-1 (56) Meier,G (2650)-Karjakin,S (2760) Riadh 2017}) 11. dxe4 O-O 12. g4 {LiveBook: 3 Games. White is slightly better.} Bg6 13. Nd4 Bb4 14. f3 $146 ({Predecessor:} 14. Nf5 Re8 15. Qc2 Qa5 16. Bd2 Qa6 {½-½ (55) Eliseev,A (2454)-Yashtylov,A (2366) Moscow 2001}) 14... Re8 15. Re1 h6 16. Be3 Qc7 17. Rc1 Rad8 18. Kh1 Qb8 19. Qb3 Bd6 20. Rcd1 Bg3 21. Rf1 {[%cal Be1f1,Bf1f2,Bf2d2][%mdl 32]} Bc7 22. Bg1 Nf8 23. Rf2 Bh7 24. Rfd2 Bf4 25. Rd3 N6d7 {[%cal Bf6d7,Bd7e5,Be5d3][%mdl 32] next ...Ne5 is good for Black.} 26. Nde2 Bc7 27. R1d2 Ne5 28. Rxd8 Rxd8 29. Rxd8 Bxd8 30. f4 Nd3 31. e5 $36 {[%mdl 2048] White fights for an advantage.} Qc7 (31... Ne6 $11 {keeps the balance.}) 32. Be4 ({But not} 32. Bxa7 $6 b6 $11) ({Better is} 32. Ne4 $16 Nxf4 {[%mdl 64] Decoy} 33. Nxf4 Qxe5 34. Qc3 Qxf4 35. Bh2 Qxe4 36. Bxe4 Bxe4+ 37. Kg1) 32... a6 (32... Bxe4+ $14 33. Nxe4 Nxf4 {[%mdl 64] Decoy} 34. Nxf4 Qxe5) 33. Bxh7+ $1 $18 Nxh7 34. Ne4 Nxf4 35. Nxf4 Qxe5 36. Qe3 $1 Qxb2 (36... Bb6 $142 37. Qxb6 Qxe4+ 38. Ng2 Ng5) 37. Nd6 Nf6 {[#]} (37... Ng5 $142 38. Qe8+ {[%mdl 64] Double Attack} Kh7) 38. Nxf7 $1 {[%mdl 512]} Bc7 $2 {[#]} (38... Bb6 39. Nxh6+ gxh6 40. Qxb6 Qxb6 41. Bxb6 Kf7) (38... Kxf7 39. Qe6+) 39. Qe6 $2 (39. Nxh6+ $1 {[%mdl 512]} gxh6 40. Qe6+ Kh8 41. Qc8+ {[%mdl 64] Double Attack} Kh7 42. Qxc7+ Kg8 43. Ne6) 39... Bxf4 40. Ng5+ $1 (40. Ne5+ Kh7 $16) 40... Kh8 41. Qc8+ Ng8 42. Nf7+ Kh7 43. Qf5+ {[%mdl 64] Double Attack} g6 44. Qxf4 {Qc7 is the strong threat.} Qxa2 45. Be3 {Strongly threatening Qc7.} Qe6 {[#]} (45... Qa1+ $142 46. Kg2 Qf6 47. Qxf6 Nxf6) 46. Nxh6 (46. Qxh6+ $1 $18 {is the precise move to win.} Nxh6 47. Ng5+ {[%mdl 64] Double Attack} Kg8 48. Nxe6) 46... Qd5+ $2 {[%mdl 8192]} (46... Nf6 $16) 47. Kh2 g5 {[#]} 48. Nxg8 $1 gxf4 $2 (48... Qa2+ 49. Qf2 Qxf2+ 50. Bxf2 Kxg8) 49. Nf6+ {[%mdl 64] Double Attack. White is clearly winning.} Kh8 50. Nxd5 fxe3 51. Nxe3 a5 52. Kg3 b5 53. Kf3 b4 54. Ke4 {Accuracy: White = 60%, Black = 31%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.13"]
[Round "9"]
[White "Calderin Gonzalez, Roberto"]
[Black "Cardenas Carbajal, Nilson"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2427"]
[BlackElo "2095"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,67,29,29,8,83,87,81,62,88,85,93,90,145,130,140,127,162,137,188,156,258,270,246,162,225,225,216,234,223,240,231,223,223,211,217,219,218,200,210,189,196,152,219,203,964,404,944,911,29981,29982,29981,29981]} 1. d4 Nf6 2. Nf3 d5 3. c4 g6 4. cxd5 Nxd5 5. e4 Nb6 6. h3 Bg7 7. Nc3 O-O 8. Be2 Nc6 9. d5 {D70: Grünfeld: Unusual White 3rd moves (met by ...d5)} (9. Be3 f5 10. exf5 Bxf5 11. O-O Qd6 12. Qd2 Rad8 13. Rad1 Kh8 14. Bh6 e5 15. Bxg7+ Kxg7 16. d5 Ne7 17. Nb5 Qf6 18. Nxc7 Nexd5 19. Nxd5 Nxd5 {0-1 (60) Shariyazdanov,A (2526)-Artemiev,V (2706) Sochi 2018}) 9... Na5 {LiveBook: 4 Games} 10. O-O e6 $146 (10... c6 $1 $11 {remains equal.}) ({Predecessor:} 10... c6 11. dxc6 Nxc6 12. Bg5 h6 13. Bf4 e5 14. Be3 Be6 15. Qc1 Kh7 16. Rd1 Qc8 {1-0 (39) Mollov,E (2380)-Serreau,D (2010) Orange 1994}) 11. Bg5 $16 {White is better.} f6 12. Be3 Nac4 13. Bc5 {And now Qb3 would win.} Re8 14. Qb3 Nd6 {[#]} (14... exd5 $142 15. Nxd5 Be6 16. Bxc4 Nxc4) 15. Nd4 $1 $36 {[%cal Rd5e6][%mdl 2048] White has strong initiative.} exd5 16. exd5 ({Much weaker is} 16. Nxd5 $6 Kh8 $11) 16... Kh8 17. Rfe1 Nd7 (17... Nf5 $16) 18. Ba3 $18 Ne5 (18... Nf8 $16 19. Ncb5 a6) 19. f4 Nef7 20. Bf3 Nf5 (20... Rxe1+ $142 21. Rxe1 Qd7) 21. Nxf5 Bxf5 22. Qxb7 Rxe1+ 23. Rxe1 {[%cal Ba1e1,Be1e7,Be7b7][%mdl 32]} Nd6 24. Bxd6 $1 cxd6 {[#]} 25. Re7 $1 {[%cal Re7g7]} Qb6+ 26. Qxb6 axb6 27. Rb7 Bh6 28. g3 (28. Rxb6 Bxf4 29. Kf2 Be5 $14) 28... Bxh3 29. Ne4 Bg7 (29... Bf8 $16 30. Rxb6 (30. Nxf6 Bg7 $14) 30... Rxa2) 30. Nxd6 {Threatens to win with Nf7+.} f5 $2 (30... Kg8 31. Nb5 (31. Rxb6 f5 $16) 31... Ra5) 31. Nf7+ Kg8 32. d6 Bf6 33. Bd5 Kf8 34. Ne5 {Precision: White = 92%, Black = 35%.} 1-0

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.13"]
[Round "9"]
[White "Morales Garcia, Sergio Joshafatt"]
[Black "Strikovic, Aleksa"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2204"]
[BlackElo "2490"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,82,-59,-54,-121,-138,-344,-339,-343,-223,-210,-208,-214,-219,-213,-218,-250,-245,-229,-233,-298,-290,-341,-355,-368,-365,-371,-360,-364,-334,-384,-384,-454,-327,-522,-518,-608,-601,-686,-545,-751,-744,-829,-787,-1013,-1016,-1016,-1016,-1013,-1005,-990,-954,-887,-879,-987,-754,-29980,-29982]} 1. d4 d6 2. Nf3 Nf6 3. Bf4 g6 4. h3 Bg7 5. e3 O-O 6. c3 c5 7. Nbd2 Nc6 8. Be2 cxd4 9. exd4 e5 10. dxe5 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems} dxe5 11. Nxe5 (11. Bg5 h6 12. Bxf6 Qxf6 13. O-O Bf5 14. Nc4 Rad8 15. Qb3 e4 16. Nh2 Qe7 17. Bg4 Bxg4 18. Nxg4 {½-½ (35) Megaranto,S (2524)-Saric,I (2639) Biel 2013}) 11... Nd5 12. Nxc6 bxc6 13. Bh2 Re8 14. O-O Bxc3 $1 {LiveBook: 5 Games} 15. bxc3 ({White should play} 15. Bc4 $15 Bxb2 16. Rb1) 15... Nxc3 $17 {[%mdl 64] [#] Double Attack} 16. Bf3 $146 (16. Qc2 $17 Nxe2+ 17. Kh1) ({Predecessor:} 16. Qc2 Nxe2+ 17. Kh1 Bf5 {0-1 (32) Azzoug,S (1587)-Simonet,D (2017) ICCF email 2016}) 16... Nxd1 $19 17. Rfxd1 Qf6 18. Ne4 {[#]} Rxe4 $1 19. Bxe4 Bf5 20. Bxf5 Qxf5 21. Rac1 Rc8 22. Re1 c5 23. Be5 Re8 24. Bc3 {[%cal Re1e8]} Rxe1+ 25. Bxe1 {[%mdl 4096] Endgame KQ-KRB} Qd5 26. a3 f6 27. Rc3 Kf7 28. Re3 g5 29. g4 Kg6 30. Kh2 (30. Bc3 $142) 30... h5 {[%cal Bh7h5,Bh5h4][%mdl 32]} 31. Kg1 Qd1 32. f3 Qd4 33. Kf2 h4 34. Bc3 Qd6 35. f4 gxf4 36. Rf3 f5 37. g5 Kxg5 38. Ke2 Qe6+ 39. Kf2 Qa2+ 40. Kg1 Qc2 41. Be1 Qe2 {Accuracy: White = 19%, Black = 89%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.13"]
[Round "9"]
[White "Gongora Montes, Benjamin"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2143"]
[BlackElo "2661"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,66,-15,-36,-19,-23,-29,-12,-77,-13,-81,-79,-79,-62,-142,-130,-133,-149,-157,-152,-146,-148,-149,-144,-138,-156,-202,-198,-234,-226,-232,-248,-249,-250,-308,-319,-349,-359,-344,-296,-356,-356,-496,-494,-452,-435,-630,-577,-591,-582,-582,-577]} 1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bh4 b6 5. Nbd2 Bb7 6. e3 Be7 7. Bd3 g5 {A46: 1 d4 Nf6 2 Nf3 e6: Torre, London and Colle Systems} (7... d6 8. c3 Nbd7 9. Qe2 a6 10. e4 Nh5 11. Bg3 c5 12. Rd1 Qc7 13. a3 b5 14. O-O Nxg3 15. hxg3 e5 {0-1 (48) Grandelius,N (2643)-Zhigalko,S (2671) Tallinn 2016}) 8. Bg3 g4 9. Ne5 h5 $1 {LiveBook: 10 Games. The position is equal.} 10. f3 {[%cal Rf3g4]} d6 11. Nec4 Nc6 12. Qe2 (12. fxg4 $11 {keeps the balance.} Nxg4 13. O-O) 12... Qd7 $146 (12... h4 $17 13. Bf2 h3) ({Predecessor:} 12... Nb4 13. Rf1 Qd7 14. e4 O-O-O 15. Ne3 Nxd3+ 16. cxd3 {½-½ (32) Motl,M (2203)-Waelzel,H (2249) Bayern 2014}) 13. O-O-O (13. fxg4 $11 {remains equal.} hxg4 14. O-O) 13... Nb4 14. Kb1 O-O-O 15. c3 (15. Bh4 $15) 15... Nxd3 $17 16. Qxd3 h4 $36 {[%mdl 2048] Keeping White busy.} 17. Bf2 h3 18. gxh3 Rxh3 19. Bg3 gxf3 20. e4 Nh5 21. Qxf3 {[#]} f5 $1 22. Qg2 Nxg3 23. Qxh3 Nxh1 24. Rxh1 fxe4 {Hoping for ...e3!} 25. Qe3 {[#]} e5 $1 {[%mdl 512]} 26. h4 (26. dxe5 d5) 26... exd4 27. cxd4 Qg4 28. h5 Rh8 29. h6 Bg5 {Black is clearly winning.} 30. Qc3 {If White can now play Nxd6+ this consolidates a bit.} Rxh6 31. Rxh6 (31. Rc1 $142 Kb8 32. Ne3) 31... Qd1+ 32. Qc1 Qxc1+ 33. Kxc1 {And now Rh5 would win.} Bxh6 {Accuracy: White = 36%, Black = 68%.} 0-1

[Event "IRT Club Caissa 2019"]
[Site "Guatemala"]
[Date "2019.01.13"]
[Round "9"]
[White "Chinchilla, Alejandro Jose"]
[Black "Gonzalez Zamora, Juan Carlos"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2128"]
[BlackElo "2529"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2019.01.09"]
[EventType "swiss"]
[EventCountry "GUA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,82,-3,4,-7,-3,-8,4,-27,-24,-74,-16,-69,-1,-39,24,37,31,32,33,44,39,30,93,89,101,97,100,97,118,58,59,4,7,1,19,10,31,-41,-30,-33,-33,-21,92,-205,-206,-206,-197,-236,-213,-206,-192,-195,-193,-208,-205,-213,-202,-645,-646,-622,-629,-624,-614,-608,-590,-566,-553,-505,-198,-29985,-29984,-29983,-29983]} 1. e4 c5 2. Nf3 e6 3. b3 d6 4. Bb2 Nf6 5. Nc3 a6 6. d4 {B50: Sicilian: 2...d6, Miscellaneous} cxd4 {LiveBook: 4 Games} 7. Qxd4 Nc6 8. Qd2 {The position is equal.} b5 $146 ({Predecessor:} 8... Be7 9. Bd3 O-O 10. O-O b5 11. Rfe1 Bb7 12. Ne2 Qc7 {0-1 (51) Mikhailovsky,V (2185)-Maletin,P (2586) Sochi 2018}) 9. a3 Bb7 10. O-O-O Be7 (10... Rc8 $17) 11. g4 $11 {[%cal Bg2g4,Bg4g5][%mdl 32]} Qb6 (11... b4 $15 12. axb4 Nxb4) 12. Rg1 O-O-O (12... Ne5 $15 13. Bg2 (13. Nxe5 dxe5 14. Kb1 O-O $15) 13... Nfxg4) 13. g5 Nd7 14. Rg3 Kb8 15. Bg2 Rc8 16. Kb1 Nde5 (16... Nc5 $11) 17. Ne1 $16 Nd7 18. f4 Nc5 19. Nd3 Rhg8 20. Rh3 (20. Qf2 $16) 20... h6 $14 21. Nxc5 (21. gxh6 $14 gxh6 22. Bf1) 21... dxc5 $11 22. gxh6 gxh6 23. Rxh6 c4 24. Bf3 (24. Nd5 $14 exd5 25. exd5) 24... cxb3 25. cxb3 {Black should prevent Nd5!} Rcd8 $36 {[%mdl 2048] Black is more active.} 26. Qe1 {White wants to play Nd5!} b4 {[#]} (26... Nd4 $11 {keeps the balance.} 27. Qe3 Qc5) 27. Na4 $2 {[%mdl 8192] [#]} (27. Nd5 $1 $16 {[%cal Rd5b6][%mdl 512]} exd5 28. exd5 bxa3 29. dxc6 Rxd1+ 30. Bxd1 axb2 31. Qxe7 {[%mdl 64] Double Attack} Bxc6 32. Qd6+ (32. Kxb2 $2 Qd4+ {[%mdl 64] Double Attack} 33. Ka2 Rg2+ 34. Be2 Bb7 $19) 32... Kb7 33. Kxb2) 27... Rxd1+ $1 $19 {[%mdl 64] Overworked Piece} 28. Qxd1 Qf2 {Hoping for ...Rg1.} 29. Rh8 Rxh8 30. Bxh8 bxa3 {Threatens to win with ...f6.} 31. Bc3 Nb4 ({But not} 31... Qxh2 32. f5 $17) 32. Bxb4 Bxb4 33. Qd8+ Ka7 34. Qc7 $2 (34. Qd1) 34... Qg1+ (34... Qxf3 35. Qb6+ Kb8 36. Qd8+ Bc8 37. Qb6+ Bb7 38. Qd8+ Bc8 39. Qb6+ Bb7 $11) 35. Ka2 Qxh2+ 36. Ka1 {Qb6+ is the strong threat.} Qg1+ 37. Ka2 Qf2+ 38. Ka1 Qd4+ ({And not} 38... Qxf3 39. Qb6+ Kb8 40. Qd8+ Bc8 41. Qb6+ Bb7 42. Qd8+ Bc8 43. Qb6+ Bb7 $11) 39. Ka2 {intending e5.} Bd6 $2 (39... a5 40. Qc2 {[#]} f5 $1 {[%mdl 512]}) 40. Qxf7 $2 (40. Qc2 $19) 40... Qf2+ {[%mdl 64] Double Attack} 41. Ka1 Bc5 {Accuracy: White = 38%, Black = 46%.} 0-1

