Author: Dann Corbit
Date: 10:25:04 12/26/02
Go up one level in this thread
On December 24, 2002 at 19:21:29, Dana Turnmire wrote: >I am beginning to think there is no way to test programs positionally because no >matter what position is given it seems there is some objection to it (apples >compared to oranges, no one correct move, computer gave the right move for the >wrong reason etc.) > >Most agree that a strong human player understands long term strategy whereas >computers are dumb in this area. This is just one example out of the book >entitled "Multiple Choice Chess" by IM Graeme Buckley. When it comes to tactics >even the world champion would get blown away by the present day programs but >when it comes to strategy humans rule. Would this format be a satisfactory way >to test programs for making good positional moves? All the programs I used were >tested at 3min/move. > > >[Date "1995.01.20"] >[White "Ward, Christopher"] >[Black "Voskanian, Vahagn"] >[Result "1-0"] > >1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be7 6.e3 Nbd7 7.Bd3 Nf8 >8.Qc2 Ne6 9.Bh4 c6 10.Nf3 g6 11.O-O O-O 12.Rab1 Ng7 13.b4 a6 14.a4 Bf5 >15.Ne5 Bxd3 16.Nxd3 Nf5 17.Bxf6 Bxf6 18.b5 axb5 19.axb5 Nd6 20.bxc6 bxc6 >21.Nb4 Qd7 22.Na4 Nc4 23.Nc5 Qd6 24.Rb3 Rfb8 25.Nba6 Rb5 26.Rxb5 cxb5 >27.Nb4 Bd8 28.g3 Bb6 29.Nbd3 Bxc5 30.dxc5 Qf6 31.Nb4 Rc8 32.c6 d4 >33.exd4 Qxd4 34.Rd1 Qe5 35.Qd3 Qe6 36.Qd5 Ne5 37.Rc1 Ng4 38.Qd4 Qe2 >39.c7 h5 40.Nd5 1-0 > >Stage one is complete. Black has a weak backward pawn on a semi-open file. >21.Nd1 and 21.Rfc1 are safe and both score one point. 21.Nb4 begins the attack >on black's weak link and bags two points. The weakest of White's choices was >21.f3, which scores no points. Take a bonus point if you spotted Black's strong >reply 21...Nc4 when the e3-pawn proves impossible to defend satisfactorily. For >example 22.Qc1 Re8 23.Re1 Nxe3!! 24.Rxe3 Bxd4 25.Nd1 Qe7 26.Kf2 Qh4+ 27.Kg1 Rxe3 >28.Nxe3 Re8. Take two bonus points if you saw 23...Nxe3 for Black. > >Arasan 6.1 - 21.Rfc1 >CM9000 - 21.Rb4 >Genius 7 - 21.Ra1 >Ruffian 21.Nc5 >[d]r2q1rk1/5p1p/2pn1bp1/3p4/3P4/2NNP3/2Q2PPP/1R3RK1 w - - 0 21 > >22.e4 only scores one point; it just offers mass exchanges with 22...Nxe4 23Nxe4 >dxe4 24.Qxe4 Qxd4 25.Qxd4 Bxd4 26.Nxc6 when a draw is a likely result. > >22.Rfd1 and 22.Ne2 are also sufficient for one point but 22.Na4 deserves two >points in view of the forking threat on b6 and the additional attack on c6. > >Arasan 6.1 - 22.Nd3 >*CM9000 - 22.Na4 >*Genius 7 - 22.Na4 >Ruffian - 22.Nd3 >[d]r4rk1/3q1p1p/2pn1bp1/3p4/1N1P4/2N1P3/2Q2PPP/1R3RK1 w - - 0 22 > >White still has to watch ...Na3 by Black and therefore must avoid 24.Rfc1, which >loses two points. > >The question is where should the rooks go? There is a useful possibility that >White can double after 24.Rb3 (two points) so this move slightly outscores the >other two which are worth one point. > >Arasan 6.1 - 24.Ne4 >CM9000 - 24.Ne4 >Genius 7 - 24.Ne4 >Ruffian - 24.Ne4 >[d]r4rk1/5p1p/2pq1bp1/2Np4/1NnP4/4P3/2Q2PPP/1R3RK1 w - - 0 24 > >After Rfb1 Na3 White finds he has fallen for the fork (this loses two points). >25.Nca6 and 25.Re1 avoid this (both score one) but with the former White has >made no progress after 25.Nca6 Rb6 26.Nc5. > >The best move must be 25.Nba6 (two points); this knight to a6 threatens to take >control of the b-file and ...Rb6 is obviously prevented. > >Arasan 6.1 - 25.Rc1 >CM9000 - Rc1 >*Genius 7 - 25.Nba6 >Ruffian - 25.Rc1 >[d]rr4k1/5p1p/2pq1bp1/2Np4/1NnP4/1R2P3/2Q2PPP/5RK1 w - - 0 25 > >It does not make sense to give away control of an open file, so 26.Rc3 does not >score. 26.Rfb1 is fine for one point. This beats 26.Rb4, which allows >26...Rxa6 27.Nxa6 Rxb4 28.Nxb4 Qxb4 (lose one point). > >The best, but only just, is 26.Rxb5 which splits the black pawns after the >recapture. In this way White exchanges one advantage (Black's backward pawn) >for another (the split b- and d-pawns). In addition, Black's d-pawn will become >isloated. Score two point for this. > >*Arasan 6.1 - 26.Rxb5 >CM9000 - 26.Rfb1 >*Genius 7 - 26.Rxb5 >Ruffian - 26.Rfb1 >[d]r5k1/5p1p/N1pq1bp1/1rNp4/2nP4/1R2P3/2Q2PPP/5RK1 w - - 0 26 > >27.Qb3 and 27.Rb1 allow the respective forks...Nd2 and ...Na3 and lose one and >two points respectively. 27.Ra1 merits one point, but leaves the knight on a6 >rather needlessly in a pin. 27.Nb4 places the knight securely in front of >Black's passed pawn (two points). > >*Arasan 6.1 - 27.Nb4 >*CM9000 - 27.Nb4 >Genius 7 - 27.Ra1 (Genius chooses 27.Nb4 at 4' 44") >Ruffian - 27.Ra1 >[d]r5k1/5p1p/N2q1bp1/1pNp4/2nP4/4P3/2Q2PPP/5RK1 w - - 0 27 > >28.h3 is okay for one point, but another pawn move is required if Black plays >...Bc7. 28.g3 carefully avoids the possible future checkmate threat and is >worth two points. 28.Qe2 does not have a logical plan behind it but it is safe >so it scores one point anyway. The same cannot be said for 28.Nb7; after >28...Qxb4 White finds that he has blundered a piece and three points. > >Arasan 6.1 - 28.Rc1 >CM9000 - 28.Nbd3 >*Genius 7 - 28.g3 >Ruffian - 28.Rb1 >[d]r2b2k1/5p1p/3q2p1/1pNp4/1NnP4/4P3/2Q2PPP/5RK1 w - - 0 28 > >Black has just captured so it would take something of a severe loss of >concentration to choose either 30.Kg2 or 30.Nf4 both of which lose three points. > 30.Nxc5 scores one point and leaves Black with the aforementioned pawn >structure, which cannot be bad for White. 30.dxc5 scores two points because it >gives White a passed pawn into the bargain. However, the nature of the game >changes slightly after this move. If the passed pawn is not defended, then it >is conceivable that it could be rounded up and taken. > >*Arasan 6.1 - 30.dxc5 >Genius 7 - 30.Nxc5 >*CM9000 - 30.dxc5 >*Ruffian - 30.dxc5 >[d]r5k1/5p1p/3q2p1/1pbp4/2nP4/3NP1P1/2Q2P1P/5RK1 w - - 0 30 > >31.Nb4 scores two points as it is an impressive multi-purpose move. White now >defends the square c6 to aid in the advance of the c-pawn. Black has a passed >pawn too, but for the moment its path is blocked and thus the b-pawn is not >looking dangerous. One final point of 31.Nb4 is that it also attacks the >d5-pawn. 31.Nf4 is an inferior version of this and scores one point. > >31.c6 is a straightforward blunder and loses one point. More complicated is >31.Qb3 which loses two points after 31...Nd2. If you saw further with 32.Qxd5 >Rd8! when Black cashes in more than the exchange, then give yourself one bonus >point. > >Arasan 6.1 - 31.Rd1 >*CM9000 - 31.Nb4 >*Genius 7 - 31.Nb4 >*Ruffian - 31.Nb4 >[d]r5k1/5p1p/5qp1/1pPp4/2n5/3NP1P1/2Q2P1P/5RK1 w - - 0 31 > >The idea is to centralise the queen and help the passed pawn up the board. >Playing 35.Qd3, without spotting 35...Nb2, reduces your score by two. You had >to see ahead and intend to play 36.Qd4 (or Qd5, Qd6); these three moves score >three bonus points. Best of all, 36.Qd7 socres four bonus points. > >35.Qb3 is safe and earns one point. 35.Qe2 loses nine points after 35...Qxe2 >which, by comparison, makes 35.Nd3 a good move, yet after 35...Qe4 it still >carries a penalty of one point. > >Arasan 6.1 - 35.Qd3 >CM9000 - 35.Qd3 >Genius 7 - 35.Qd3 >Ruffian - 35.Qd3 >[d]2r3k1/5p1p/2P3p1/1p2q3/1Nn5/6P1/2Q2P1P/3R2K1 w - - 0 35 Chess Tiger 14 analysis: r3kn1r/pp2bpp1/2p1bn1p/q2p4/3P3B/2NBP2P/PPQ1NPP1/1K1R3R w kq - ce 18; acd 12; acs 120; pv Bg3 N8h7 Be5 O-O Ng3 Ng5 Nf5 Bxf5 Bxf5 Qb4 a3 Qb6 Ka2;|Bh4g3 2kr2nr/ppp2ppp/2b1pq2/8/1b1PP3/2NBBPP1/PP5P/R2QK2R b KQ - ce -32; acd 13; acs 120; pv Ne7 Rc1 Rxd4 Bxd4 Qxd4 Be2 Qe3 Qd2 Bc5 Qxe3 Bxe3 Rd1 Rd8 Rxd8+ Kxd8 Nd1 Bc5;|Ng8e7 2rq1rk1/pb3ppp/1p2p3/n7/3PP3/3B1N2/P2Q1PPP/3RR1K1 w - - ce -40; acd 12; acs 120; pv Qf4 Re8 Rc1 Nc6 Ne5 Re7 Nxc6 Rxc6 Rxc6 Bxc6 Rc1 Bb7 Qg5 Rd7 Qxd8+ Rxd8;|Qd2f4 r1bqr1kb/pp5p/4ppp1/2pPP3/2P2P2/8/P2QB1PP/1RB1K2R w K - ce -40; acd 13; acs 120; pv d6 fxe5 O-O e4 Bb2 Bxb2 Rxb2 b6 Bg4 Qf6 Rd1 Ba6 Rc2 Qh4;|d6 1r2q1k1/p1rn3p/1pp1pp2/P2n4/1P1P4/Q4N2/5PPP/2RR1BK1 w - - ce 104; acd 14; acs 26; pv b5 Rbc8 Rxc6 Rxc6 bxc6 Nb8 axb6 axb6 Bc4 Nxc6 Bxd5 exd5 Qd6 Qd8 Qe6+ Kf8 Rc1;|!26 r2q1rk1/pppnb1pp/8/3P1p2/N1PQ4/8/PP2B1PP/R4RK1 b - - ce -22; acd 13; acs 120; pv Bf6 Qf2 Qe7 Bd3 Qb4 Qc2 Bd4+ Kh1 g6 Rad1 Nc5 Nxc5 Qxc5;|Be7f6 r3rbk1/1bqn1ppp/pp1ppn2/8/2PNP3/2N1BP2/PP1Q2PP/2RR1BK1 w - - ce 40; acd 12; acs 120; pv b3 Ne5 h3 g6 Na4 Nfd7 f4 Nc6 g3 Na5 Bd3 Bg7;|b3 r1bq1rk1/1pp1bppp/p1p5/2n1P3/3N4/2N5/PPP2PPP/R1BQR1K1 b - - ce 34; acd 13; acs 120; pv Ne6 Nf5 Bc5 Ne4 Qxd1 Rxd1 Ba7 Be3 Bxe3 Nxe3;|Nc5e6 r2qr1k1/pp3pbp/n5p1/2pP1b2/2Q1nB2/2N2N2/PP2BPPP/3R1RK1 w - - ce -12; acd 12; acs 120; pv Bd3 Bxc3 bxc3 b5 Qxb5 Nxc3 Qxa6 Bxd3 Qxd3 Ne2+ Kh1 Nxf4 Qc4 Qd6 Ng5;|Be2d3 r3k2r/pp1bb1pp/1q2pn2/3pB3/1P6/2PB4/P4PPP/RN1Q1RK1 w kq - ce 30; acd 13; acs 120; pv g4 Bb5 Bxb5+ Qxb5 g5 Ne4 a4 Qc6 Bxg7 Rg8 Qh5+ Kd7 b5 Qc4 Qxh7 Nxg5;|g4 r3k2r/pppqnppp/2n1b3/3p4/3P1B2/2PB1N1P/P1P2PP1/R2Q1RK1 b kq - ce -66; acd 13; acs 120; pv O-O Bh2 Rab8 Re1 Bf5 Qd2 Bxd3 cxd3 Ng6 Rab1 Nce7 Qg5 f6 Qh5;|0-0 3r2nr/1kp3pp/pp1bbp2/P1p5/4P3/1NN1BP2/1PP3PP/R2R2K1 w - - ce 48; acd 15; acs 8; pv e5 Be7 Rxd8 Bxd8 Bxc5 Nh6 Bd4 Nf5 Rd1 fxe5 Bxe5 Bg5 Nd4 Be3+ Kf1 Bc4+ Ke1 Nxd4;|!8 r2qnrk1/p2p3p/bpn1p1p1/5p2/2PPPP2/P2BB1N1/6PP/R2Q1RK1 b - - ce 16; acd 14; acs 120; pv Nd6 c5 Nc4 Qc1 Nxe3 Qxe3 Bxd3 Qxd3 fxe4 Nxe4 bxc5 Nxc5 Qc7 g3 Rfc8 Rfc1 Rab8;|Ne8d6 1r2k2r/4bpp1/p2pbN1p/1p2p3/4P1P1/P3BP2/1PPq3P/1K1R1B1R b k - ce -12; acd 14; acs 120; pv Bxf6 Rxd2 Kd7 h4 Bd8 Bc5 Bc7 Bb4 Kc6 Bd3 a5 Bc3 Rbc8;|Be7f6 1r2k2r/4bp2/p2pbp2/1p2p3/4P1P1/P3B3/1PPR3P/1K3BR1 b k - ce -24; acd 15; acs 2; pv Bc4 Bxc4 bxc4 Rf2 Rh4 Rg3 Kd7 h3 Rbh8 Rh2 f5 exf5 d5 c3 e4 Rd2;|!2 2r3k1/pbqrbppp/1pn1pn2/6B1/3P4/P1NQ1N1P/BP3PP1/3RR1K1 w - - ce 12; acd 13; acs 10; pv d5 h6 Bxf6 Bxf6 Bb1 Ne5 Nxe5 Bxe5 Qh7+ Kf8 Nb5 Qb8 Nxa7 Rcd8 Qh8+ Ke7;|!10 8/p1p1bp2/1p2k1np/3bP3/2p1NP2/P1P1KN1P/1P5B/8 b - - ce 30; acd 15; acs 2; pv c5 Bg3 a6 Nh2 Bf8 Ng4 Ne7 Nd6 Bg2 Nf6 b5 Kf2 Bxh3 Nfe4 Nf5 Nxc5+ Kd5;|!2 8/p3bp2/1pb1k2p/2p1P3/2p1NP2/P1P1K2P/1P3B2/8 b - - ce 69; acd 17; acs 2; pv Bd7 h4 Kd5 Nf6+ Bxf6 exf6 Bf5 a4 Ke6 a5 Kxf6 Kf3 Ke6 h5 Kd5 axb6 axb6 Bh4;|!2 r2qr1k1/1pp2ppp/p1nb1n2/8/P2Pp3/4P1N1/1P1B1PPP/R2QNRK1 b - - ce 32; acd 13; acs 120; pv Qd7 Nc2 Rab8 Qe2 Ne7 Bb4 Bxg3 hxg3 Ned5 Bc5 b6 Bb4 a5 Bd2;|Qd8d7 r2qr1k1/1pp2ppp/p1n2n2/8/P2Pp3/4P1P1/1P1B1PP1/R2QNRK1 b - - ce 52; acd 13; acs 120; pv Qd5 Rc1 Qe6 Nc2 Ne7 Ba5 Rac8 Na3 Ned5 Re1 b6 Bd2 c5;|Qd8d5 2r2rk1/pp1q1ppp/4p3/2Pp4/3Q4/P1R1PP2/1P3P1P/5RK1 b - - ce 118; acd 14; acs 24; pv e5 Qg4 f5 Qb4 f4 Rd1 fxe3 Rxe3 Rf6 Rxe5 Rg6+ Kf1 Qh3+ Ke2 Qxh2 Rexd5 Rc7;|!24 1rb2rk1/2q2pbp/pp1p2p1/P1pPp2P/2P1P1n1/2N5/1PQBBPP1/R3K2R w KQ - ce 16; acd 13; acs 120; pv axb6 Qxb6 h6 Bh8 f3 Nf6 Na4 Qc7 O-O Nh5 Bd3 Ng3 Rf2 Bb7;|ab6 r2qrbk1/1b1n1pp1/5n1p/1p1ppN2/1Pp1P2N/PB1P2RP/5PP1/R1BQ2K1 b - - ce 144; acd 13; acs 2; pv Kh7 Ba2 g6 Nxh6 Bxh6 Bxh6 Nh5 Qf3 Ndf6 Bg5 Nxg3 Bxf6 Ne2+ Kf1 dxe4 dxe4;|!2 r2qrb2/1b1n1ppk/5n1p/1p2pN2/1PppP2N/P2P1QRP/2B2PP1/R1B3K1 b - - ce 226; acd 12; acs 120; pv g6 Bxh6;|g6 r2qk2r/ppp2p2/3p1n1p/5bp1/1bPQ3P/2N3B1/PP2PPP1/2R1KB1R b Kkq - ce -52; acd 13; acs 2; pv O-O hxg5 hxg5 a3 Bc5 Qd2 Ng4 Rh5 Bg6 Rxg5 Nf6 b4 Bb6 e3;|0-0 q2r4/r4pk1/2Rbp1pp/pQ1p4/Pp1P4/1N2P1P1/1P3P1P/2R3K1 w - - ce 56; acd 14; acs 120; pv f3 Kh7 R1c2 Rb8 Qe2 Rd8 e4 dxe4 fxe4 Qb7 Qf2 Qe7 Nc5 f6 d5 exd5 exd5;|f3 8/1prrkbp1/p1p1pp2/P1P5/2BPP2P/4KP2/1R6/1R6 w - - ce 54; acd 15; acs 11; pv e5 fxe5 dxe5 Bh5 Rg2 g6 Rb6 Ke8 Rgb2 Rh7 Rd2 Rcf7 f4 Bg4 Rd6 Rd7;|!11 r1bq1rk1/2pn2bp/3p2p1/1N1Ppp1n/1P2P3/2N1BP2/2BQ2PP/2KR3R w - - ce -106; acd 13; acs 120; pv exf5 gxf5 Bg5 Bf6 Bxf6 Ndxf6 Qh6 Bd7 Kd2 Nf4 g3 N4xd5 Bb3 Bxb5 Nxb5;|ef5 1r3r2/p1npqpkp/1pb1p1p1/8/2PRP3/2N3P1/PPQ2PBP/5RK1 w - - ce 52; acd 13; acs 120; pv Rfd1 f6 b3 e5 Rd6 Ne6 Qc1 Nd4 Qa3 Bb7 f3 Rfc8 Qb4;|Rf1d1 r2q1rk1/3b1pbp/p2p2p1/1ppP4/P3PP2/2N2QN1/1P4PP/R4R1K w - - ce -134; acd 13; acs 120; pv f5 bxa4 Nxa4 Bxa4 Rxa4 Bxb2 Qe2 Be5 fxg6 fxg6 Rxf8+ Kxf8 Rxa6 Rxa6 Qxa6;|f5
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