Bishop Pair

Nordlandia · Post by **Nordlandia** » Sun Feb 05, 2017 12:11 pm

6k1/1b3pp1/p1n1p2p/1p6/4P3/P4PP1/BP1B2KP/8 b - - 0 34

[pgn][Event "Netanya"]
[Site "Netanya"]
[Date "1969.05.15"]
[Round "2"]
[White "Samuel Reshevsky"]
[Black "Mato Damjanovic"]
[Result "1-0"]
[ECO "E57"]
[SetUp "1"]
[FEN "6k1/1b3pp1/p1n1p2p/1p6/4P3/P4PP1/BP1B2KP/8 b - - 0 34"]
[PlyCount "24"]
[EventDate "1969.??.??"]

34... Kf8 35. Bc3 e5 36. Bd5 f6 37. f4 exf4 38. gxf4 Ke8 39. Kf3 Nd8 40. Kg4
Bxd5 41. exd5 Nb7 42. Bb4 g6 43. f5 g5 44. a4 Kf7 45. axb5 axb5 46. Kh5 1-0

[/pgn]Stockfish assessment: +0.60 +/=

Nordlandia · Post by **Nordlandia** » Sun Feb 05, 2017 2:33 pm

Code: Select all

r2q1rk1/1p2ppbp/2p3p1/1n2P3/pP2B3/P3P1P1/1B3P1P/R1Q1R1K1 b - - 0 22

[pgn][Event "Ch URS"]
[Site "Kiev (Ukraine)"]
[Date "1954.01.28"]
[Round "14"]
[White "Salomon Flohr"]
[Black "Anatolij Bannik"]
[Result "1-0"]
[ECO "A15"]
[SetUp "1"]
[FEN "r2q1rk1/1p2ppbp/2p3p1/1n2P3/pP2B3/P3P1P1/1B3P1P/R1Q1R1K1 b - - 0 22"]
[PlyCount "56"]
[EventDate "1954.??.??"]

22... Qb8 23. Qc5 Rd8 24. Rad1 e6 25. Bf3 Qc7 26. Be4 Bf8 27. Qc2 Bg7 28. f4
Bf8 29. Kf2 Rxd1 30. Rxd1 Qb6 31. Rd7 Rd8 32. Rxd8 Qxd8 33. Ke2 Qa8 34. h4 Be7
35. Qd1 Kf8 36. Qd7 Qb8 37. Bc2 Qa8 38. h5 Bd8 39. hxg6 hxg6 40. g4 Bb6 41. f5
gxf5 42. gxf5 Nc7 43. Bd4 exf5 44. Bxf5 Bxd4 45. Qxc7 Bb2 46. Qd6+ Kg7 47. Qf6+
Kg8 48. Qg5+ Kf8 49. Qh6+ Ke7 50. Qd6+ 1-0

[/pgn]
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Code: Select all

r2q2k1/1p2p1bp/3pb1p1/p4r2/P7/1PN1B3/1P3PPP/1R1Q1RK1 w - - 0 16

[pgn][Event "?"]
[Site "?"]
[Date "1970.??.??"]
[Round "?"]
[White "Kopylov, Igor A"]
[Black "Zaitsev, Alexander"]
[Result "0-1"]
[ECO "B35"]
[SetUp "1"]
[FEN "r2q1rk1/1p2p1bp/3pb1p1/p4P2/P7/1PN1B3/1P3PPP/1R1Q1RK1 b - - 0 15"]
[PlyCount "27"]
[EventDate "1970.??.??"]

15... Rxf5 16. Nb5 Rd5 17. Qf3 Qd7 18. Rbc1 Rf5 19. Qe2 Bxb3 20. Rc7 Qe6 21.
Nc3 d5 22. Bd4 Qxe2 23. Nxe2 e5 24. Bc3 Rf7 25. Rxf7 Kxf7 26. Re1 d4 27. Bd2
Bxa4 28. Ng3 Bc6 0-1

[/pgn]

Nordlandia · Post by **Nordlandia** » Sun Feb 05, 2017 2:56 pm

Code: Select all

r1n3k1/5ppp/p3pn2/3p4/8/B2P2P1/P4P1P/1R1B2K1 w - - 0 23

[pgn][Event "?"]
[Site "?"]
[Date "1935.??.??"]
[Round "?"]
[White "Baranov, H."]
[Black "Konstantinopolsky, Alexander"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "58"]
[EventDate "1935.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6. Nf3 d5 7. e5 Nd7 8. Qe2
Qc7 9. Bb5 a6 10. Bxc6 bxc6 11. O-O c5 12. Bf4 Be7 13. Bg3 Bb7 14. Nc3 Qc6 15.
Nd2 O-O 16. Rfe1 Rae8 17. f4 f5 18. b3 g5 19. fxg5 d4 20. Na4 f4 21. Bh4 Nxe5
22. Nf3 Nxf3+ 23. gxf3 Bd8 24. Kf2 Rf5 25. Rg1 Re5 26. Qxe5 Qxf3+ 27. Ke1 Ba5+
28. c3 Be4 29. Bf2 d3 0-1

[/pgn]

Code: Select all

&#91;Event "?"&#93;
&#91;Site "?"&#93;
&#91;Date "1935.??.??"&#93;
&#91;Round "?"&#93;
&#91;White "Baranov, H."&#93;
&#91;Black "Konstantinopolsky, Alexander"&#93;
&#91;Result "0-1"&#93;
&#91;ECO "B40"&#93;
&#91;PlyCount "58"&#93;
&#91;EventDate "1935.??.??"&#93;

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6. Nf3 d5 7. e5 Nd7 8. Qe2
Qc7 9. Bb5 a6 10. Bxc6 bxc6 11. O-O c5 12. Bf4 Be7 13. Bg3 Bb7 14. Nc3 Qc6 15.
Nd2 O-O 16. Rfe1 Rae8 17. f4 f5 18. b3 g5 19. fxg5 d4 20. Na4 f4 21. Bh4 Nxe5
22. Nf3 Nxf3+ 23. gxf3 Bd8 24. Kf2 Rf5 25. Rg1 Re5 26. Qxe5 Qxf3+ 27. Ke1 Ba5+
28. c3 Be4 29. Bf2 d3 0-1

Nordlandia · Post by **Nordlandia** » Sun Feb 05, 2017 3:30 pm

[d]r5k1/1b1q1ppp/5b2/1p2pP2/3pP3/1Q1P3P/1PN3P1/1N1R2K1 b - - 0 23

[d]4r2k/3r3p/p3qbpB/npp1p3/4B3/1PP2Q2/P4PP1/R3R1K1 w - - 0 29

Nordlandia · Post by **Nordlandia** » Sun Feb 05, 2017 3:50 pm

Code: Select all

r4rk1/pppb1ppp/3n4/3P4/5B2/2P5/P4PPP/R3RBK1 b - - 0 17

Stockfish assessment: +0.55 +/=

Nordlandia · Post by **Nordlandia** » Sun Feb 05, 2017 4:31 pm

Code: Select all

r6r/pp1bkppp/2n1pn2/8/4P3/2N5/PP3PPP/R1B1KB1R w KQ - 0 12

[pgn][Event "Tilburg Interpolis"]
[Site "Tilburg NED"]
[Date "1985.08.28"]
[Round "1"]
[White "Anthony Miles"]
[Black "Viktor Korchnoi"]
[Result "1-0"]
[ECO "D21"]
[WhiteElo "2570"]
[BlackElo "2630"]
[SetUp "1"]
[FEN "r6r/pp1bkppp/2n1pn2/8/4P3/2N5/PP3PPP/R1B1KB1R w KQ - 0 12"]
[PlyCount "77"]
[EventDate "1985.??.??"]

12. Be3 b6 13. f3 Rhd8 14. O-O-O Be8 15. Be2 Nd7 16. Nb5 f6 17. Nc7 Rac8 18.
Nxe8 Rxe8 19. Kb1 Ndb8 20. Rc1 e5 21. Rhd1 Red8 22. Rxd8 Rxd8 23. Bb5 Rd6 24.
a3 Kd8 25. Bc4 Ne7 26. b4 Nbc6 27. Kb2 Nd4 28. Rd1 Kc7 29. Rd2 g5 30. a4 Ng6
31. Kc3 Nh4 32. b5 Ne6 33. Ra2 Nd4 34. Kb4 Ng6 35. a5 bxa5+ 36. Kxa5 Nf4 37.
Kb4 Kb8 38. g3 Nfe6 39. Bxe6 Rxe6 40. Bxd4 exd4 41. Ra6 Re7 42. Kc4 Rf7 43.
Kxd4 h5 44. Kd5 Rb7 45. Ke6 Rxb5 46. Kxf6 g4 47. f4 Rb2 48. e5 Kb7 49. Ra1 Rxh2
50. e6 1-0

[/pgn]Stockfish assessment: +0.65 +/=
-------------------

Code: Select all

2r4k/pp5p/6b1/1P6/2Bb4/6NP/P6K/5R2 w - - 0 41

[pgn][Event "Montpellier Candidates"]
[Site "Montpellier FRA"]
[Date "1985.10.25"]
[Round "10"]
[White "Yasser Seirawan"]
[Black "Viktor Korchnoi"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2570"]
[BlackElo "2630"]
[SetUp "1"]
[FEN "2r4k/pp4bp/6b1/1P6/2BQ4/6NP/P6K/5R2 b - - 0 40"]
[PlyCount "85"]
[EventDate "1985.10.12"]

40... Bxd4 41. Bb3 Rc5 42. Rd1 Be5 43. Rd5 Rxd5 44. Bxd5 b6 45. Bc4 Be4 46. h4
Bb1 47. Kh3 Kg7 48. Kg4 Kf6 49. Nh5+ Ke7 50. Nf4 Kd6 51. Nd3 Bf6 52. Kh5 Bg7
53. Kg5 Bc2 54. Kf5 Bc3 55. Kg5 Bg7 56. Kf5 Bf8 57. Kg5 Bd1 58. Nf2 Kc5 59. Bd3
Ba4 60. Bxh7 Bxb5 61. Bg8 Be7+ 62. Kg4 Be2+ 63. Kf4 Kd4 64. Kg3 b5 65. Bf7 Bd6+
66. Kg2 a5 67. h5 Bf4 68. Nh3 Be3 69. Ng1 Bd1 70. Nf3+ Kc3 71. Ne5 a4 72. Kf1
b4 73. Ke1 Bc2 74. Nc4 Bf4 75. Nb6 Kb2 76. Nd5 Be5 77. Ke2 Bc3 78. Bg6 b3 79.
Ne3 Bxg6 80. Nd1+ Kc2 81. Ne3+ Kc1 82. axb3 a3 0-1

[/pgn]Stockfish assessment: -0.65 =/+

Nordlandia · Post by **Nordlandia** » Sun Feb 05, 2017 5:04 pm

Code: Select all

2b3k1/5pp1/pb2p2p/4P3/1p6/6P1/PP3PBP/2N3K1 w - - 0 29

[pgn][Event "Waddinxveen"]
[Site "Waddinxveen NED"]
[Date "1979.06.12"]
[Round "1"]
[White "Gennady Sosonko"]
[Black "Anatoly Karpov"]
[Result "0-1"]
[ECO "E06"]
[SetUp "1"]
[FEN "6k1/1b3pp1/pb2p2p/4P3/1p6/6P1/PP3PBP/2N3K1 b - - 0 28"]
[PlyCount "31"]
[EventDate "1979.??.??"]

28... Bc8 (28... Bxg2 $11) 29. Be4 Bd4 30. Nd3 a5 31. Kg2 f5 32. exf6 gxf6 33.
g4 Kf8 34. b3 Ke7 35. Kg3 Kd6 36. Kf4 Bd7 37. h3 Bb5 38. f3 Bd7 39. Kg3 f5 40.
gxf5 exf5 41. Bb7 Bb5 42. Ne1 Bc3 43. Nc2 Bd3 0-1

[/pgn]Stockfish assessment: -0.55 =/+
-----------------

Code: Select all

r4rk1/pp3ppp/4p3/2b1P3/5P2/2Nb2N1/PP4PP/R4R1K w - - 0 20

[pgn][Event "Buenos Aires"]
[Site "Buenos Aires ARG"]
[Date "1978.11.??"]
[Round "8"]
[White "Anthony Miles"]
[Black "Lajos Portisch"]
[Result "0-1"]
[ECO "D20"]
[SetUp "1"]
[FEN "r4rk1/pp3ppp/4p3/2b1P3/5P2/2Nb2N1/PP4PP/R4R1K w - - 0 20"]
[PlyCount "44"]
[EventDate "1978.??.??"]

20. Rfd1 Rad8 21. Nge4 Be3 22. g3 f6 23. Nd6 Bg6 24. Nc4 Bd4 25. Kg2 Be8 26.
exf6 gxf6 27. Rac1 Bc6+ 28. Kf1 Bc5 29. Ke2 a6 30. Nd2 Kf7 31. Nce4 Bd4 32. Nc3
Ke7 33. Nf3 Ba7 34. Ne1 Rxd1 35. Rxd1 Be8 36. Kf3 Rg8 37. Rc1 Bh5+ 38. Kg2 Be3
39. Rc2 Bxf4 40. Ne4 Bb8 41. Nc5 Rc8 0-1

[/pgn]

[d]4rr1k/2n1b1pp/p2p4/2p1p1P1/P6P/4B3/1PP2PB1/2KR3R w - - 0 23

Nordlandia · Post by **Nordlandia** » Sun Feb 05, 2017 6:29 pm

Can white hold this position?

The combination resulted in dynamic equilibrium. Black won the exchange for his pawn, but the activity ofWhite's bishops more than fully makes up for his insignificant material loss.

[d]1r2b3/p3k1pp/5p2/K2B4/P2B3P/4P3/5PP1/8 b - - 0 40

Nordlandia · Post by **Nordlandia** » Mon Feb 06, 2017 4:07 pm

[d]r6r/pp1bkppp/2n1pn2/8/4P3/2N5/PP3PPP/R1B1KB1R w KQ - 0 1

[pgn][Event "EXPERT-PC, Slow 75m+30s"]
[Site "EXPERT-PC"]
[Date "2017.02.06"]
[Round "1"]
[White "Stockfish 060217 64 BMI2"]
[Black "Komodo 10.3 64-bit"]
[Result "1-0"]
[SetUp "1"]
[FEN "r6r/pp1bkppp/2n1pn2/8/4P3/2N5/PP3PPP/R1B1KB1R w KQ - 0 1"]
[PlyCount "119"]

1. Bg5 Rhc8 2. f3 e5 3. Nd5+ Kd6 4. Nxf6 gxf6 5. Bxf6 Nd4 6. Rd1 Ke6 7. Bg5 Rc2
8. Rd2 Rac8 9. Bd3 Rc1+ 10. Rd1 Rxd1+ 11. Kxd1 Rg8 12. h4 Ba4+ 13. Kd2 h6 14.
Bxh6 Rxg2+ 15. Kc3 Bb5 16. Bxb5 Nxb5+ 17. Kd3 Nd4 18. f4 f5 19. fxe5 Kxe5 20.
exf5 Rg3+ 21. Kd2 Nxf5 22. Bg5 Rg2+ 23. Kc1 Rg4 24. Bd8 Rd4 25. Re1+ Kf4 26.
Bf6 Rd7 27. Bg5+ Kg4 28. Re4+ Kh5 29. Kc2 Rd5 30. Kc3 Ra5 31. Kb3 Rd5 32. a4 b6
33. Kc3 Rd7 34. b4 Rd1 35. Rc4 Rd7 36. Rf4 Rd5 37. b5 Kg6 38. Rg4 Kh5 39. Rg2
Rd1 40. Bf6 Rf1 41. Rg5+ Kh6 42. Rg8 Rf3+ 43. Kb2 Rf2+ 44. Kc1 Ra2 45. Rg4 Re2
46. Rc4 Ng3 47. Rc7 Kg6 48. Bb2 Ne4 49. Rxa7 Nc5 50. Ba3 Nb3+ 51. Kb1 Nd2+ 52.
Kc2 Nf1+ 53. Kb3 Nd2+ 54. Kc3 Nb1+ 55. Kd3 Rd2+ 56. Ke3 Kf5 57. Be7 Rb2 58. Ra6
Nc3 59. Kd4 Ne2+ 60. Kc4 1-0

[/pgn]https://en.lichess.org/qHOWdVQd

Nordlandia · Post by **Nordlandia** » Sat Feb 11, 2017 5:46 pm

[d]r1r5/pp2kppp/4pn2/5P2/Pn6/1B3P2/1B4PP/R4RK1 w - - 0 0
[d]2r2k2/5np1/1p1b1p2/p2Bp3/P3P2P/2BK1P2/1P6/1R6 b - - 0 0
[d]3r2k1/p4pbp/1p4p1/2p5/8/PbP1BN1P/1P3PP1/R5K1 w - - 0 0
[d]r2r1bk1/1ppq1pp1/p2n3p/8/8/3B1Q1P/PPPB1PP1/R3R1K1 w - - 0 1
[d]4rrk1/pppb1qpp/2np1p2/8/2P1PP2/1P6/PB1Q2PP/1B2RRK1 b - - 0 1
[d]3r1rk1/p3qppp/2bb4/2p5/3p4/1P2P3/PBQN1PPP/2R2RK1 w - - 0 1
[d]r1bqkbnr/2p3pp/p2p1p2/1p2p3/3PP3/1P3N2/1PP2PPP/RNBQ1RK1 w kq - 0 9
[d]5r2/1ppk3p/p1n1p1p1/8/3b3P/3B2P1/PPP1RP2/2K1B3 b - - 0 1
[d]4r1k1/2pn1pp1/p1b4p/1p2p3/4P3/1BP2P1P/PP3BP1/3R2K1 b - - 0 0
[d]3r4/p4kb1/1p2bp1p/2p3p1/8/1NP1BP1P/PP4P1/R5K1 w - - 0 0
[d]5r1k/1bq2p1p/p2ppb2/1p2n3/3QP3/2N2B2/PPP4P/R4R1K w - - 0 20

Bishop Pair

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