Author: Dann Corbit
Date: 00:38:17 01/04/06
Go up one level in this thread
On January 03, 2006 at 15:43:47, Dann Corbit wrote:
>On January 01, 2006 at 13:31:31, Vincent Lejeune wrote:
>
>>On January 01, 2006 at 11:42:20, Joachim Rang wrote:
>>
>>>On January 01, 2006 at 11:28:40, Mike Byrne wrote:
>>>
>>>>http://isbn.nu/1579125549
>>>>
>>>>big book - buy.com has it for $10.98, 38% lower than Amazon
>>>>
>>>>1120 pages -- it's a big book for an $11 paperback
>>>>
>>>>http://www.buy.com/prod/Chess/q/loc/106/31303786.html
>>>>
>>>>although I have the hardcover - I may buy the paperback as my "working copy"
>>>>
>>>>......
>>>
>>>hardcopy or paperback does not matter. What I would buy is an electronic version
>>>with the 5000 positions collected as FENs.
>>>
>>>Joachim
>>
>>
>>I found all the positions in PGN format here :
>>http://www.qno.de/schach/polgar.zip
>>There 4463 mate in 1,2 or 3 moves and some very easy tactic so :
>>more than 99% of them are found in less than a second by modern engines: happy
>>diging !
>>
>>Here's one interresting :
>>
>>[Event "#5215 Chess: 5334 Problems, Combination"]
>>[Site "Copyright 1994 Könemann"]
>>[Date "1994.??.??"]
>>[Round "?"]
>>[White "Polgar sisters' tournament-ga"]
>>[Black "White to move and win"]
>>[Result "*"]
>>[SetUp "1"]
>>[FEN "2b1k1nr/r5b1/pp1P1pp1/2p3B1/q1P1PQ2/2P3Pp/4B2P/2NR1RK1 w k - 0 1"]
>>[PlyCount "15"]
>>[EventDate "1994.??.??"]
>>
>>1. e5 fxg5 2. Qe4 Bf5 3. Rxf5 gxf5 4. Qxf5 Ne7 5. dxe7 Rxe7 6. Qc8+ Kf7 7. Rf1+
>>Kg6 8. Bd3+ {+-} *
>
>So far, I have analyzed up through 32,300 so that one is just out of reach as of
>yet.
>
>I completed a precursory checkmate search with Chest 3.19 and found 11824
>checkmates through depth 5.
>
>I have analyzed with Crafty at 10 seconds per position through 32,300 and a few
>thousand with Rybka (but Arena got hung up, does not know how to handle EPD
>files with 35000 rows in it).
>
>It seems that there are some mistakes in the file (not all moves are optimal)
>but also some clever brilliancies that the programs do not see and yet are
>clearly the right moves.
Crafty agrees on 10 second analysis:
[D]2b1k1nr/r5b1/pp1P1pp1/2p3B1/q1P1PQ2/2P3Pp/4B2P/2NR1RK1 w k - acd 11; acn
9645216; acs 10; bm e5; ce 61; pv e5 fxg5 Qxg5 Rh6 Bd3 Bf5 Bxf5 gxf5 Qxf5 Qd7
g4;
Crafty agrees on 10 second analysis:
[D]2b1k1nr/r5b1/pp1P1pp1/2p1P1B1/q1P2Q2/2P3Pp/4B2P/2NR1RK1 b k - acd 12; acn
9648278; acs 10; bm fxg5; ce -60; pv fxg5 Qxg5 Rh6 Bd3 Bf5 Bxf5 gxf5 Qxf5 Qd7
Qe4 Re6 Nd3;
Crafty disagrees on 10 second analysis:
[D]2b1k1nr/r5b1/pp1P2p1/2p1P1p1/q1P2Q2/2P3Pp/4B2P/2NR1RK1 w k - acd 11; acn
9864193; acs 10; bm Qe4; ce 36; pv Qxg5 Rh6 Bd3 Bf5 Bxf5 gxf5 Qxf5 Qd7 Qe4 Re6
Nd3;
Crafty agrees on 10 second analysis:
[D]2b1k1nr/r5b1/pp1P2p1/2p1P1p1/q1P1Q3/2P3Pp/4B2P/2NR1RK1 b k - acd 12; acn
9741047; acs 10; bm Bf5; ce -44; pv Bf5 Rxf5 gxf5 Qxf5 Ne7 dxe7 Qc6 Bf3 Qh6 Rd6
Qh7;
Crafty agrees on 10 second analysis:
[D]4k1nr/r5b1/pp1P2p1/2p1Pbp1/q1P1Q3/2P3Pp/4B2P/2NR1RK1 w k - acd 12; acn
10335917; acs 10; bm Rxf5; ce 19; pv Rxf5 gxf5 Qxf5 Kd8 Bg4 Qc6 Bf3 Qa4 Qxg5+
Bf6 exf6 Rf7 Qd5 Rxf6;
Crafty agrees on 10 second analysis:
[D]4k1nr/r5b1/pp1P2p1/2p1PRp1/q1P1Q3/2P3Pp/4B2P/2NR2K1 b k - acd 12; acn
10410039; acs 10; bm gxf5; ce -39; pv gxf5 Qxf5 Kd8 Bg4 Qc6 Bf3 Qa4 Qxg5+ Bf6
exf6 Rf7 Qd5 Rxf6;
Crafty agrees on 10 second analysis:
[D]4k1nr/r5b1/pp1P4/2p1Ppp1/q1P1Q3/2P3Pp/4B2P/2NR2K1 w k - acd 11; acn 10388724;
acs 11; bm Qxf5; ce 19; pv Qxf5 Kd8 Bg4 Qc6 Bf3 Qa4 Qxg5+ Bf6 exf6 Rf7 Qd5 Rxf6;
Crafty disagrees on 10 second analysis:
[D]4k1nr/r5b1/pp1P4/2p1PQp1/q1P5/2P3Pp/4B2P/2NR2K1 b k - acd 10; acn 11152009;
acs 10; bm Ne7; ce -39; pv Kd8 Bg4 Qc6 Bf3 Qa4 Qxg5+ Bf6 exf6 Rf7 Qd5 Rxf6;
Crafty agrees on 10 second analysis:
[D]4k2r/r3n1b1/pp1P4/2p1PQp1/q1P5/2P3Pp/4B2P/2NR2K1 w k - acd 12; acn 11764592;
acs 10; bm dxe7; ce 459; pv dxe7 Qxd1+ Bxd1 Rxe7 Ba4+ Kd8 e6 Kc8 Qxg5 Bf8 Bd7+
Kb7 Bc6+ Ka7 Qf6 Rg8;
Crafty disagrees on 10 second analysis:
[D]4k2r/r3P1b1/pp6/2p1PQp1/q1P5/2P3Pp/4B2P/2NR2K1 b k - acd 12; acn 12144279;
acs 10; bm Rxe7; ce -536; pv Qxd1+ Bxd1 Rxe7 Ba4+ Kd8 e6 Bxc3 Qd5+ Kc7 Qc6+ Kb8
Qxb6+ Rb7 Qd6+ Ka7 Qxc5+ Rb6 e7 Bd2;
Crafty agrees on 10 second analysis:
[D]4k2r/4r1b1/pp6/2p1PQp1/q1P5/2P3Pp/4B2P/2NR2K1 w k - acd 10; acn 13183431; acs
10; bm Qc8+; ce 32748; pv Qc8+ Kf7 Rf1+ Bf6 Rxf6+ Kg7 Qf5 Qd1+ Bxd1 Rd8 Qxg5+
Kh8 Rh6+ Rh7 Qf6+ Kg8 Rg6+ Rg7 Qxg7#;
Crafty agrees on 10 second analysis:
[D]2Q1k2r/4r1b1/pp6/2p1P1p1/q1P5/2P3Pp/4B2P/2NR2K1 b k - acd 5; acn 6954; acs 1;
bm Kf7; ce -767; pv Kf7 Rf1+ Bf6 Qxh8 Re6 Bh5+ Ke7 exf6+;
Crafty agrees on 10 second analysis:
[D]2Q4r/4rkb1/pp6/2p1P1p1/q1P5/2P3Pp/4B2P/2NR2K1 w - - acd 10; acn 13777595; acs
10; bm Rf1+; ce 32750; pv Rf1+ Bf6 Rxf6+ Kg7 Qf5 Qd1+ Bxd1 Rd8 Qxg5+ Kh8 Rh6+
Rh7 Qf6+ Kg8 Rg6+ Rg7 Qxg7#;
Crafty disagrees on 10 second analysis (but still sees a clear loss):
[D]2Q4r/4rkb1/pp6/2p1P1p1/q1P5/2P3Pp/4B2P/2N2RK1 b - - acd 11; acn 13826522; acs
10; bm Kg6; ce -32751; pv Bf6 Rxf6+ Kg7 Qf5 Qd1+ Bxd1 Rd8 Qxg5+ Kh8 Rh6+ Rh7
Qf6+ Kg8 Rg6+ Rg7 Qxg7#;
Crafty agrees on 10 second analysis:
[D]2Q4r/4r1b1/pp4k1/2p1P1p1/q1P5/2P3Pp/4B2P/2N2RK1 w - - acd 4; acn 9582; acs 1;
bm Bd3+; ce 32764; pv Bd3+ Kh5 Qxh3#;
Rerun of the disagreement positions:
2b1k1nr/r5b1/pp1P2p1/2p1P1p1/q1P2Q2/2P3Pp/4B2P/2NR1RK1 w k - acd 15; acn
624015846; acs 600; bm Qe4; ce 239; pv Qxg5 Rh6 Bg4 Bxg4 Qxg4 Qd7 Qxd7+ Rxd7 e6
Rd8 Rf7 Bd4+ cxd4 Rxd6 d5 Ne7 Nd3 g5;
4k1nr/r5b1/pp1P4/2p1PQp1/q1P5/2P3Pp/4B2P/2NR2K1 b k - acd 15; acn 631748756; acs
600; bm Ne7; ce -120; pv Kd8 Nd3 Nh6 Qxg5+ Kc8 e6 Rd8 Nf4 Bf8 d7+ Raxd7 exd7+
Rxd7 Qh5 Rxd1+ Bxd1 Qd7 Bf3 Qf5 Qxh3 Qxh3 Nxh3;
4k2r/r3P1b1/pp6/2p1PQp1/q1P5/2P3Pp/4B2P/2NR2K1 b k - acd 16; acn 723928977; acs
600; bm Rxe7; ce -654; pv Qxd1+ Bxd1 Rxe7 Ba4+ Kd8 Qd3+ Kc8 Qd6 Rb7 Bd1 Rc7 Qxb6
Rb7 Qxa6 Rh6 Qa8+ Kc7 Qa5+ Kb8 Qxc5 Re6;
2Q4r/4rkb1/pp6/2p1P1p1/q1P5/2P3Pp/4B2P/2N2RK1 b - - acd 13; acn 828841477; acs
600; bm Kg6; ce -32751; pv Bf6 Rxf6+ Kg7 Qf5 Qd1+ Bxd1 Rd8 Qxg5+ Kh8 Rh6+ Rh7
Qf6+ Kg8 Rg6+ Rg7 Qxg7#;
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