Arasan's dubious (?!) move.
Posted: Tue Nov 05, 2019 3:32 pm
[d]r2q1rk1/1p2bpp1/4pn1p/p2b4/Pn1p1B2/2N2NP1/1P2PPBP/2RQR1K1 w - - 0 17
White to Play: Bc7
It would probably beat the brakes off of most humans, but not elite engines.
[d]r2r2k1/3nbpp1/4p2p/p1n5/P7/2P2QP1/4PPKP/2R1R3 w - - 0 24
Black has three minor pieces at the cost of a queen and a pawn.
The game was played on the FICS
[pgn]
[Event "Acid Ape Chess - 15+1 FICS rated standa"]
[Site "?"]
[Date "2019.11.04"]
[Round "?"]
[White "ArasanX"]
[Black "Compucheck"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2613"]
[BlackElo "2602"]
[Annotator "Tactical Analysis 2.20 (60s)"]
[PlyCount "171"]
[EventDate "2019.??.??"]
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4
Bd7 9. Qxc4 Bc6 10. Bg5 a5 11. Nc3 Na6 12. Rfe1 {E05: Open Catalan: 5 Nf3 Be7}
(12. e3 Nb4 13. Rfd1 Nd7 14. Bxe7 Qxe7 15. e4 Rfd8 16. Rd2 Nb6 17. Qe2 Be8 18.
b3 c5 19. Qe3 Rac8 {1/2-1/2 (75) Ding,L (2771)-Aronian,L (2802) Tbilisi 2017
CBM 181 [Sagar Shah]}) 12... Bd5 13. Qd3 Nb4 14. Qd1 {The position is equal.}
h6 $146 ({Predecessor:} 14... Bxf3 15. Bxf3 h6 16. Bf4 Nfd5 17. Be5 c6 18. Qb3
{1/2-1/2 (18) Hoffmann,M (2475)-Arlandi,E (2440) Buekfuerdo 1995}) 15. Bf4 c5
16. Rc1 cxd4 (16... Bc6 {feels hotter.} 17. dxc5 Bxc5 18. Qxd8 Rfxd8 19. Nb5 b6
) 17. Bc7 $6 {-1.87/23 [#]} dxc3 $19 ({Not} 17... Qxc7 18. Nxd5 Qd8 19. Nxe7+
Qxe7 20. Qxd4 $11) 18. Bxd8 Rfxd8 ({Inferior is} 18... Raxd8 19. bxc3 Bxf3 20.
Qb3 $11) 19. bxc3 {-3.00/17} (19. e3 $142 {-1.68/13} cxb2 20. Rb1) 19... Bxf3
$1 20. Qb3 Bxg2 21. Kxg2 Na6 22. Qxb7 Nd7 {-1.58/13} (22... Re8 $19 {-3.27/10}
23. Qb1 Nc5) 23. Qf3 $17 Nac5 {Black has strong compensation.} 24. Red1 Rac8
25. Ra1 Bg5 26. Qh5 {-1.91/12} (26. Rd6 $17 {-1.48/12 might work better.})
26... Rc7 $19 27. Rab1 Bf6 28. Rd4 {-2.94/15} (28. Qf3 {-2.03/14 was worth a
try.} Rdc8 29. Qf4) 28... Bxd4 29. cxd4 Nb7 $1 ({And not} 29... Nxa4 30. Qxa5
Ndb6 31. Rxb6 $11) 30. h4 Nf6 31. Qe5 Ne8 32. Qb5 Ra8 33. e4 Nbd6 34. Qe2 Rd8
35. e5 Nc4 36. Rb5 Rxd4 37. Rb8 Kf8 38. Kh3 Ke7 39. f4 f5 40. Qh5 {[#]} Rd8 41.
Rxd8 Kxd8 42. Qd1+ Ke7 43. Qe2 Nb6 44. Qb5 Nd5 45. Qxa5 Rc3 46. Qa7+ Nec7 47.
Kg2 Rc2+ 48. Kh1 Kf7 49. h5 Rc4 50. Kh2 Rb4 51. Kh3 Kg8 52. Kg2 Kh7 53. Kh3 Rb2
54. Qd4 Rb4 55. Qa7 $1 Rb3 56. Kg2 Rc3 57. a5 Rb3 58. Kf2 {-3.58/12} (58. Qc5
$142 {-2.33/9}) 58... Rb5 59. Kg1 Kg8 60. Kh2 Kf7 61. Kg2 Kf8 62. Kh3 Ke8 63.
Kh2 Kd7 64. Kh3 Kc6 65. Kh2 Rb2+ 66. Kh3 Rb7 67. Qg1 Rb5 68. Qc1+ {-6.77/15} (
68. Qa7 $142 {-4.17/11} Nc3 69. Qe3) 68... Rc5 {Black is clearly winning.} 69.
Qa3 Kb5 70. Kh2 Na6 71. Kh1 Nab4 72. a6 Nxa6 73. g4 fxg4 74. f5 Nab4 75. fxe6
Ne7 {-13.02/12} (75... Rc7 $142 {-8.17/10} 76. Qg3 Rc4) 76. Qb2 Rc4 77. Qb1 Kc5
78. Qd1 Rd4 79. Qf1 Nbc6 80. Qf7 Rd1+ 81. Kg2 Rd2+ 82. Kg3 Kd5 83. Qf4 Re2 {
-47.77/12} (83... Rd3+ $142 {-22.88/10} 84. Kg2 Nxe5) 84. Qxg4 Nd4 {-57.52/11}
(84... Rxe5 $142 {-23.78/8} 85. Kf2 Nf5 86. Qf3+ Kd6) 85. Kh3 Re3+ 86. Kh2 {
Accuracy: White = 69% (31/27/72), Black = 89% (42/27/73).} 0-1
[/pgn]
White to Play: Bc7
It would probably beat the brakes off of most humans, but not elite engines.
[d]r2r2k1/3nbpp1/4p2p/p1n5/P7/2P2QP1/4PPKP/2R1R3 w - - 0 24
Black has three minor pieces at the cost of a queen and a pawn.
The game was played on the FICS
[pgn]
[Event "Acid Ape Chess - 15+1 FICS rated standa"]
[Site "?"]
[Date "2019.11.04"]
[Round "?"]
[White "ArasanX"]
[Black "Compucheck"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2613"]
[BlackElo "2602"]
[Annotator "Tactical Analysis 2.20 (60s)"]
[PlyCount "171"]
[EventDate "2019.??.??"]
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4
Bd7 9. Qxc4 Bc6 10. Bg5 a5 11. Nc3 Na6 12. Rfe1 {E05: Open Catalan: 5 Nf3 Be7}
(12. e3 Nb4 13. Rfd1 Nd7 14. Bxe7 Qxe7 15. e4 Rfd8 16. Rd2 Nb6 17. Qe2 Be8 18.
b3 c5 19. Qe3 Rac8 {1/2-1/2 (75) Ding,L (2771)-Aronian,L (2802) Tbilisi 2017
CBM 181 [Sagar Shah]}) 12... Bd5 13. Qd3 Nb4 14. Qd1 {The position is equal.}
h6 $146 ({Predecessor:} 14... Bxf3 15. Bxf3 h6 16. Bf4 Nfd5 17. Be5 c6 18. Qb3
{1/2-1/2 (18) Hoffmann,M (2475)-Arlandi,E (2440) Buekfuerdo 1995}) 15. Bf4 c5
16. Rc1 cxd4 (16... Bc6 {feels hotter.} 17. dxc5 Bxc5 18. Qxd8 Rfxd8 19. Nb5 b6
) 17. Bc7 $6 {-1.87/23 [#]} dxc3 $19 ({Not} 17... Qxc7 18. Nxd5 Qd8 19. Nxe7+
Qxe7 20. Qxd4 $11) 18. Bxd8 Rfxd8 ({Inferior is} 18... Raxd8 19. bxc3 Bxf3 20.
Qb3 $11) 19. bxc3 {-3.00/17} (19. e3 $142 {-1.68/13} cxb2 20. Rb1) 19... Bxf3
$1 20. Qb3 Bxg2 21. Kxg2 Na6 22. Qxb7 Nd7 {-1.58/13} (22... Re8 $19 {-3.27/10}
23. Qb1 Nc5) 23. Qf3 $17 Nac5 {Black has strong compensation.} 24. Red1 Rac8
25. Ra1 Bg5 26. Qh5 {-1.91/12} (26. Rd6 $17 {-1.48/12 might work better.})
26... Rc7 $19 27. Rab1 Bf6 28. Rd4 {-2.94/15} (28. Qf3 {-2.03/14 was worth a
try.} Rdc8 29. Qf4) 28... Bxd4 29. cxd4 Nb7 $1 ({And not} 29... Nxa4 30. Qxa5
Ndb6 31. Rxb6 $11) 30. h4 Nf6 31. Qe5 Ne8 32. Qb5 Ra8 33. e4 Nbd6 34. Qe2 Rd8
35. e5 Nc4 36. Rb5 Rxd4 37. Rb8 Kf8 38. Kh3 Ke7 39. f4 f5 40. Qh5 {[#]} Rd8 41.
Rxd8 Kxd8 42. Qd1+ Ke7 43. Qe2 Nb6 44. Qb5 Nd5 45. Qxa5 Rc3 46. Qa7+ Nec7 47.
Kg2 Rc2+ 48. Kh1 Kf7 49. h5 Rc4 50. Kh2 Rb4 51. Kh3 Kg8 52. Kg2 Kh7 53. Kh3 Rb2
54. Qd4 Rb4 55. Qa7 $1 Rb3 56. Kg2 Rc3 57. a5 Rb3 58. Kf2 {-3.58/12} (58. Qc5
$142 {-2.33/9}) 58... Rb5 59. Kg1 Kg8 60. Kh2 Kf7 61. Kg2 Kf8 62. Kh3 Ke8 63.
Kh2 Kd7 64. Kh3 Kc6 65. Kh2 Rb2+ 66. Kh3 Rb7 67. Qg1 Rb5 68. Qc1+ {-6.77/15} (
68. Qa7 $142 {-4.17/11} Nc3 69. Qe3) 68... Rc5 {Black is clearly winning.} 69.
Qa3 Kb5 70. Kh2 Na6 71. Kh1 Nab4 72. a6 Nxa6 73. g4 fxg4 74. f5 Nab4 75. fxe6
Ne7 {-13.02/12} (75... Rc7 $142 {-8.17/10} 76. Qg3 Rc4) 76. Qb2 Rc4 77. Qb1 Kc5
78. Qd1 Rd4 79. Qf1 Nbc6 80. Qf7 Rd1+ 81. Kg2 Rd2+ 82. Kg3 Kd5 83. Qf4 Re2 {
-47.77/12} (83... Rd3+ $142 {-22.88/10} 84. Kg2 Nxe5) 84. Qxg4 Nd4 {-57.52/11}
(84... Rxe5 $142 {-23.78/8} 85. Kf2 Nf5 86. Qf3+ Kd6) 85. Kh3 Re3+ 86. Kh2 {
Accuracy: White = 69% (31/27/72), Black = 89% (42/27/73).} 0-1
[/pgn]