Author: Dann Corbit
Date: 11:17:07 04/23/04
Go up one level in this thread
On April 23, 2004 at 03:01:16, Drexel,Michael wrote: >On April 23, 2004 at 02:14:37, Dann Corbit wrote: > >>On April 23, 2004 at 01:50:34, Afzal Siddique wrote: >> >>>Hello ALL >>> >>>[D]rnbqk2r/pppp1ppp/8/2bN4/4P1n1/1P1Q1N2/P1P2PPP/R1B1KB1R b KQkq - 0 7 >>> >>>the thing here is to avoid Bxf2+ and Nxf2.. c6 here is the best move but when i >>>analysed using Ruffian this is what i got >>> >>>Ruffian 1.0.5 UCI 15 MB: >>> 1 00:00 1.17 Ng4xf2 >>> 1 00:00 1.19 Bc5xf2+ Ke1d1 >>> 2 00:00 2.68 Bc5xf2+ Ke1d1 00 >>> 3 00:00 1.68 Bc5xf2+ Ke1d2 00 Kd2c3 >>> 3 00:00 1.94 Ng4xf2 Qd3c3 Nf2xh1 Qc3xc5 >>> 4 00:00 1.94 Ng4xf2 Qd3c3 Nf2xh1 Qc3xc5 >>> 5 00:00 2.14 Ng4xf2 Qd3c3 Nf2xh1 Qc3xc5 Nb8c6 >>> 6 00:00 1.90 Ng4xf2 Qd3c3 Nf2xh1 Qc3xc5 Nb8c6 Bc1f4 >>> 7 00:00 1.34 Ng4xf2 Qd3c3 00 Bc1b2 f7f6 Qc3xc5 Nf2xh1 Qc5xc7 >>> 8 00:02 1.34 Ng4xf2 Qd3c3 00 Bc1b2 f7f6 Qc3xc5 Nf2xh1 Qc5xc7 >>> 9- 00:04 0.99 Ng4xf2 >>> 9 00:05 -0.41 Ng4xf2 Qd3c3 00 Qc3xc5 Nf2xh1 Nd5xc7 b7b6 Qc5c3 Bc8b7 Nc7xa8 >>>Bb7xa8 >>> 9 00:08 0.59 Bc5xf2+ Ke1e2 Bf2b6 Nd5xb6 a7xb6 h2h3 Qd8f6 c2c3 Ng4e5 Nf3xe5 >>>Qf6xe5 Ke2e1 >>>10 00:27 0.59 Bc5xf2+ Ke1e2 Bf2b6 Nd5xb6 a7xb6 h2h3 Qd8f6 c2c3 Ng4e5 Nf3xe5 >>>Qf6xe5 Ke2e1 >>>11 01:16 0.40 Bc5xf2+ Ke1e2 Bf2b6 h2h3 Ng4f6 Nd5xb6 a7xb6 e4e5 Nf6g8 Bc1f4 >>>Nb8c6 Qd3d5 Ke8f8 >>>11 01:43 0.41 00 Bc1g5 Bc5xf2+ Ke1e2 f7f6 Bg5f4 Nb8c6 Nd5xc7 Ra8b8 h2h3 >>>Bf2b6 Qd3d5+ Kg8h8 h3xg4 Bb6xc7 >>>12 03:22 0.37 00 Bc1g5 Bc5xf2+ Ke1e2 f7f6 Bg5f4 Nb8c6 Nd5xc7 Ra8b8 h2h3 >>>Ng4e5 Qd3d5+ Kg8h8 Ke2xf2 Qd8xc7 >>>13 08:57 0.24 00 Bc1g5 Bc5xf2+ Ke1e2 f7f6 Bg5f4 f6f5 Nd5xc7 f5xe4 Qd3xe4 >>>d7d5 Qe4xd5+ Qd8xd5 Nc7xd5 Rf8e8+ Ke2d1 Nb8c6 >>> >>> >>> >>>what is 00 Bc1g5?? >> >>Black castles and then white moves the bishop to g5. >> >>So far, Shredder likes the idea to castle better too. >> >>Why do you suppose that c6 is best? > >This position is from a "Computer Killer" variation I have already posted here >last year: > >http://chessprogramming.org/cccsearch/ccc.php?art_id=275948 > >IIRC the refutation was 1.b3 e5 2.e4 Nc6 3.Bb2 Nf6 4.Nc3 Bc5 5.Nf3 Ng4 6.d4 exd4 >7.Nd5 c6! > >and not 7.Nd5 d3 8.Qxd3 c6 I do not think that d3 is the mistake. Here is the game: [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "1-0"] [ECO "A01"] [Variation "Nimzowitsch-Larsen: 1...e5"] [white "killer gambit (2623)"] [black "Ruffi (2331)"] 1. b3 e5 2. e4 Nc6 3. Bb2 Nf6 4. Nc3 Bc5 5. Nf3 Ng4 6. d4 exd4 7. Nd5 d3 8. Qxd3 Nxf2 9. Qc3 Nxh1 10. Qxg7 Rf8 11. Nf6+ Ke7 12. Nd5+ Ke8 13. Bf6 Ne7 14. Ng5 Nxd5 15. Bxd8 Bb4+ 16. Kd1 Bc3 17. e5 Ne3+ 18. Kc1 Nf5 19. Qf6 d5 20. Bxc7 Bd7 21. Bd6 Nxd6 22. Qxd6 Rh8 23. Qxd5 Rf8 24. Nxh7 Rh8 25. Nf6+ Kf8 26. Nxd7+ 1-0 rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - acd 1; acn 20; acs 1; pm b3; ce 0; pv c4 e5; c0 "book move -- no analysis"; rnbqkbnr/pppppppp/8/8/8/1P6/P1PPPPPP/RNBQKBNR b KQkq - acd 1; acn 20; acs 1; pm e5; ce 0; pv e5 Bb2; c0 "book move -- no analysis"; rnbqkbnr/pppp1ppp/8/4p3/8/1P6/P1PPPPPP/RNBQKBNR w KQkq - acd 1; acn 29; acs 1; pm e4; ce 0; pv Bb2 Nc6; c0 "book move -- no analysis"; rnbqkbnr/pppp1ppp/8/4p3/4P3/1P6/P1PP1PPP/RNBQKBNR b KQkq - acd 15; acn 1180851076; acs 999; pm Nc6; ce 33; pv Nf6 Nc3 Bc5 Nf3 O-O Be2 d5 exd5 Nxd5 O-O Nc6 Ne4 Bb4 d4 Bf5; r1bqkbnr/pppp1ppp/2n5/4p3/4P3/1P6/P1PP1PPP/RNBQKBNR w KQkq - acd 15; acn 1175498565; acs 1000; pm Bb2; ce -23; pv Nf3 Nf6 Nc3 Bc5 Be2 O-O O-O d5 exd5 Nxd5 Nxd5 Qxd5 Bc4 Qd6 d3 Qf6 Qe2; r1bqkbnr/pppp1ppp/2n5/4p3/4P3/1P6/PBPP1PPP/RN1QKBNR b KQkq - acd 15; acn 1201768447; acs 999; bm Nf6; ce 19; pv Nf6 Nf3 Bc5 Bd3 O-O O-O d6 Nc3 Nd4 Na4 Nxf3+ Qxf3 Bb4 c3 Bg4 Qg3 Ba5; r1bqkb1r/pppp1ppp/2n2n2/4p3/4P3/1P6/PBPP1PPP/RN1QKBNR w KQkq - acd 15; acn 1188569245; acs 1000; pm Nc3; ce -42; pv Nf3 Nxe4 Bb5 f6 O-O Nd6 Bxc6 dxc6 d4 e4 Re1; r1bqkb1r/pppp1ppp/2n2n2/4p3/4P3/1PN5/PBPP1PPP/R2QKBNR b KQkq - acd 15; acn 1184293435; acs 1000; pm Bc5; ce 37; pv Be7 Nf3 O-O Bd3 d5 exd5 Nxd5 Nxd5 Qxd5 Qe2 Bg4 Qe4 Qxe4+ Bxe4 f6 Bd5+ Kh8 Bxc6 bxc6 O-O; r1bqk2r/pppp1ppp/2n2n2/2b1p3/4P3/1PN5/PBPP1PPP/R2QKBNR w KQkq - acd 16; acn 1214429669; acs 999; pm Nf3; ce -44; pv Be2 O-O Nf3 d6 O-O Bd7 d3 Nd4 Nxd4 Bxd4 Qd2 Qe7 a3 Rad8 Qg5 Nd5; r1bqk2r/pppp1ppp/2n2n2/2b1p3/4P3/1PN2N2/PBPP1PPP/R2QKB1R b KQkq - acd 15; acn 1282912202; acs 1000; bm Ng4; ce 69; pv Ng4 d4 exd4 Nd5 d6 Nxd4 O-O Be2 Re8 f3 Nxd4 Bxd4 Bxd4 Qxd4 c5 Qc4 Qh4+ Kd2 Nxh2; r1bqk2r/pppp1ppp/2n5/2b1p3/4P1n1/1PN2N2/PBPP1PPP/R2QKB1R w KQkq - acd 16; acn 1247746570; acs 999; bm d4; ce -84; pv d4 exd4 Nd5 O-O Bd3 d6 O-O a5 Bb5 Na7 Be2 c6 Nxd4 cxd5 Bxg4 dxe4; r1bqk2r/pppp1ppp/2n5/2b1p3/3PP1n1/1PN2N2/PBP2PPP/R2QKB1R b KQkq - acd 15; acn 1306300654; acs 1000; bm exd4; ce 67; pv exd4 Nd5 O-O Nxd4 d6 h3 Nge5 c3 Ne7 Ne3 Re8 b4 Bb6 Nc4 Bd7 Nxb6 axb6; r1bqk2r/pppp1ppp/2n5/2b5/3pP1n1/1PN2N2/PBP2PPP/R2QKB1R w KQkq - acd 14; acn 1264609101; acs 1000; bm Nd5; ce -101; pv Nd5 O-O Bc4 Re8 O-O d6 b4 Nxb4 Nxb4 Bxb4 Qxd4 Qf6 Qxf6 Nxf6 Bxf6 gxf6 Rab1; [D]r1bqk2r/pppp1ppp/2n5/2bN4/3pP1n1/1P3N2/PBP2PPP/R2QKB1R b KQkq - acd 14; acn 1256768373; acs 999; pm d3; ce 52; pv O-O Nxd4 d6 Be2 Re8 f3 Nxd4 Bxd4 c6 fxg4 cxd5 Bxc5 dxc5 Qxd5 Qh4+ g3 Qe7; c0 "the move in question (is d3 or O-O or c6 best? Yes, probably c6 but d3 is not fatal."; r1bqk2r/pppp1ppp/2n5/2bN4/4P1n1/1P1p1N2/PBP2PPP/R2QKB1R w KQkq - acd 14; acn 1315977277; acs 1000; bm Qxd3; ce -33; pv Qxd3 Bxf2+ Ke2 Bb6 Bxg7 Rg8 Bc3 d6 h3 Nf2 Nf6+ Ke7 Nd5+ Kf8 Bf6 Nxd3 Bxd8; Here is one big foul-up: [D]r1bqk2r/pppp1ppp/2n5/2bN4/4P1n1/1P1Q1N2/PBP2PPP/R3KB1R b KQkq - acd 15; acn 1308539578; acs 1000; am Nxf2; ce -3; pv f6 Nd4 O-O Qc4 Bxd4 Bxd4 b5 Ne7+ Kh8 Nxc6 dxc6 Qc5 Rf7 O-O-O Rd7 Be2 Rd6; c0 "Nxf2 loses the game (and f6 is dead even)."; r1bqk2r/pppp1ppp/2n5/2bN4/4P3/1P1Q1N2/PBP2nPP/R3KB1R w KQkq - acd 16; acn 1509708038; acs 999; bm Qc3; ce 54; pv Qc3 f6 Qxc5 Nxh1 Qg1 d6 Qxh1 O-O Bc4 Kh8 Qf1 Re8 Bd3; r1bqk2r/pppp1ppp/2n5/2bN4/4P3/1PQ2N2/PBP2nPP/R3KB1R b KQkq - acd 16; acn 1535816051; acs 1000; pm Nxh1; ce -163; pv f6 Qxc5 Nxh1 Nxf6+ gxf6 Qh5+ Ke7 Bxf6+ Kxf6 Qh6+ Kf7 Ng5+ Qxg5 Qxg5 Rf8 Be2 b6 O-O-O Nf2 Rf1; r1bqk2r/pppp1ppp/2n5/2bN4/4P3/1PQ2N2/PBP3PP/R3KB1n w Qkq - acd 15; acn 1496387026; acs 999; bm Qxg7; ce 123; pv Qxg7 Rf8 Nf6+ Ke7 Nd5+ Ke8 Bf6 Ne7 Bxe7 Bxe7 Qe5 f6 Nxc7+ Kf7 Qh5+ Kg7 Qg4+ Kh8 Nxa8 Qe8; r1bqk2r/pppp1pQp/2n5/2bN4/4P3/1P3N2/PBP3PP/R3KB1n b Qkq - acd 14; acn 1545637927; acs 1000; bm Rf8; ce -185; pv Rf8 Nf6+ Ke7 Nd5+ Ke8 Bf6 Ne7 Bxe7 Bxe7 Qe5 Rg8 Nxc7+ Kf8 Nxa8 d6 Qd4 Rg4; r1bqkr2/pppp1pQp/2n5/2bN4/4P3/1P3N2/PBP3PP/R3KB1n w Qq - acd 13; acn 1502392297; acs 999; bm Nf6+; ce 207; pv Nf6+ Ke7 Bc4 b5 Nxh7 Ke8 Bf6 Be7 Nxf8 bxc4 Ne6 dxe6 Qg8+ Bf8 Bxd8 Nxd8; r1bqkr2/pppp1pQp/2n2N2/2b5/4P3/1P3N2/PBP3PP/R3KB1n b Qq - acd 14; acn 1530598851; acs 1000; bm Ke7; ce -267; pv Ke7 O-O-O Nf2 Nh4 d5 Rxd5 Nxe4 Rxd8 Rxd8 Nxe4 Be3+ Nd2 Bxd2+ Kb1 h6; A less than optimal choice by white here could have let black back into the game: [D]r1bq1r2/ppppkpQp/2n2N2/2b5/4P3/1P3N2/PBP3PP/R3KB1n w Q - acd 13; acn 1537831016; acs 1000; am Nd5+; ce 251; pv Nxh7 Bb4+ Nd2 Ke8 Nf6+ Ke7 Nd5+ Ke8 Bf6 Ne7 Bxe7 Bxe7 Qe5 Rg8 Nxc7+ Kf8 Nxa8 Qe8; r1bq1r2/ppppkpQp/2n5/2bN4/4P3/1P3N2/PBP3PP/R3KB1n b Q - acd 14; acn 1509932752; acs 999; bm Ke8; ce -136; pv Ke8 Nf6+ Ke7 Bc4 b5 Nxh7 Ke8 Bf6 Be7 Bxb5 Bb7 Ke2 a6 Bxc6 Bxc6 Rxh1; r1bqkr2/pppp1pQp/2n5/2bN4/4P3/1P3N2/PBP3PP/R3KB1n w Q - acd 13; acn 1522528645; acs 1000; pm Bf6; ce 167; pv Nf6+ Ke7 Bc4 b5 Nxh7 Ke8 Bf6 Be7 Nxf8 bxc4 Ne6 dxe6 Qg8+ Bf8 Bxd8 Nxd8; r1bqkr2/pppp1pQp/2n2B2/2bN4/4P3/1P3N2/P1P3PP/R3KB1n b Q - acd 15; acn 1432507756; acs 999; bm Ne7; ce -182; pv Ne7 Bg5 Nxd5 Bxd8 Bb4+ Nd2 Bc3 Qg5 Bxa1 exd5 f6 Qh6 Be5 Ne4 f5 Nf6+ Kxd8 Qxf8#; r1bqkr2/ppppnpQp/5B2/2bN4/4P3/1P3N2/P1P3PP/R3KB1n w Q - acd 15; acn 1502294039; acs 1000; bm Ng5; ce 272; pv Ng5 Nxd5 exd5 Bb4+ c3 Bxc3+ Bxc3 Qe7+ Kd2 f6 Re1 Qxe1+ Kxe1 fxg5 Bb4 Rxf1+ Kxf1 d6 Qxc7 Bf5 Bxd6; r1bqkr2/ppppnpQp/5B2/2bN2N1/4P3/1P6/P1P3PP/R3KB1n b Q - acd 14; acn 1451726824; acs 999; bm Nxd5; ce -358; pv Nxd5 exd5 Bb4+ c3 Bxc3+ Bxc3 Qe7+ Kd2 f6 Re1 Qxe1+ Kxe1 fxg5 Bb4 Rxf1+ Kxf1 d6 Kg1 a5 Bc3 Ng3 hxg3; Another less optimal move: [D]r1bqkr2/pppp1pQp/5B2/2bn2N1/4P3/1P6/P1P3PP/R3KB1n w Q - acd 15; acn 1466197774; acs 1000; am Bxd8; ce 388; pv exd5 Bb4+ c3 Bxc3+ Bxc3 Qe7+ Kd2 f6 Re1 Qxe1+ Kxe1 fxg5 Be2 g4 Bxg4 Ng3 Qe5+ Kd8 Qg5+ Ke8 Qe3+ Kd8 Qxg3; c0 "Bxd8 is really bad (exd5 is dominatingly better)."; r1bBkr2/pppp1pQp/8/2bn2N1/4P3/1P6/P1P3PP/R3KB1n b Q - acd 16; acn 1434775088; acs 999; bm Bb4+; ce -180; pv Bb4+ Ke2 Bc3 Qh6 Nf4+ Ke3 Ng6 Rd1 Kxd8 Bc4 Be5 Rxh1 Bf4+ Kf2 f6 Qxh7 fxg5 Qxg6; White keeps trying to let black off the hook: [D]r1bBkr2/pppp1pQp/8/3n2N1/1b2P3/1P6/P1P3PP/R3KB1n w Q - acd 17; acn 1428917865; acs 1000; am Kd1; ce 138; pv Ke2 Bc3 e5 Bxa1 Kf3 c6 Ba5 Bd4 c4 Nf4 Ne4 d5 Nd6+ Ke7 Qf6+ Kd7 Qxf4 Bb6 Bxb6 axb6 cxd5 Rxa2; But black fails to take advantage: [D]r1bBkr2/pppp1pQp/8/3n2N1/1b2P3/1P6/P1P3PP/R2K1B1n b - - acd 16; acn 1468110939; acs 999; am Bc3; ce -172; pv Nf2+ Kc1 Ba3+ Kb1 Nxe4 Nxe4 Kxd8 c4 f5 c5 Re8 Nf6 Nxf6 Qxf6+ Re7 Kc2 d5 cxd6 Bxd6 Rd1; c0 "Bc3 is a disaster."; r1bBkr2/pppp1pQp/8/3n2N1/4P3/1Pb5/P1P3PP/R2K1B1n w - - acd 16; acn 1452375004; acs 1000; bm e5; ce 337; pv e5 Nf2+ Kc1 Bb4 Bc4 Kxd8 Bxd5 c6 a3 Bc5 b4 Be3+ Kb1 Re8 Bxf7 h6 Bxe8 hxg5; It's all over now. r1bBkr2/pppp1pQp/8/3nP1N1/8/1Pb5/P1P3PP/R2K1B1n b - - acd 15; acn 1404818314; acs 999; pm Ne3+; ce -387; pv Nf2+ Kc1 Bb4 a3 Bc5 b4 Be3+ Kb1 Nd1 c4 N5c3+ Kc2 d5 Rxd1 Nxd1 Nxh7 Bf5+ Kxd1 Bxh7 Bxc7; r1bBkr2/pppp1pQp/8/4P1N1/8/1Pb1n3/P1P3PP/R2K1B1n w - - acd 15; acn 1378148479; acs 1000; bm Kc1; ce 452; pv Kc1 Nf5 Qf6 d5 Bxc7 Bd7 Bd6 Nxd6 Qxd6 Rh8 Qf6 Rf8 Nxh7 Ng3 Nxf8 Kxf8; r1bBkr2/pppp1pQp/8/4P1N1/8/1Pb1n3/P1P3PP/R1K2B1n b - - acd 15; acn 1361860413; acs 1000; bm Nf5; ce -643; pv Nf5 Qf6 d5 Bxc7 Bd7 Bd6 Nxd6 Qxd6 Rh8 Qxd5 h6 Qxf7+ Kd8 Bb5 Kc7 Qxd7+ Kb6 Bc6 bxc6;
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