Author: Steven J. Brann
Date: 04:58:01 08/21/01
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On August 20, 2001 at 17:05:35, Uri Blass wrote: >Here is some analysis of shredder5.32 p200(64 Mbytes hash tables) > >Diep blundered in the relevant position by Kc5 when g4 is winning. >The surprising thing is that Shredder also cannot see g4 in a reasonable time >and need more than 5 hours on p200 to avoid Kc5 (it probably means that Shredder >with the best hardware of today cannot avoid Kc5 at tournament time control). > >h5 is probably enough to win(I did not analyze it and I may be wrong) but g4 is >the simplest way to win > >I thought that Shredder is better in the endgame than other programs but I doubt >it after seeing that shredder also does the same mistake that Diep did when Deep >Fritz has no problem to find the right move with a winning score. > >,M - Shredder 5.32 >2b5/7p/P2k4/1P4p1/2Ppp3/5pP1/1N3K1P/8 b - - 0 1 > Chessmaster 8000 with custom personality finds ...g4 in less than a second and with time, the evaluation improves for black. PIII 933 with 64MB hash. Time Depth Score Positions Moves 0:00 1/4 -0.01 3383 1...g4 2. Nd1 Kc5 3. a7 e3+ 4. Nxe3 dxe3+ 5. Kxe3 0:00 1/5 0.01 8538 1...g4 2. Ke1 e3 3. Nd3 Kc7 4. c5 0:00 1/6 -0.09 14785 1...g4 2. Ke1 e3 3. Nd3 Kc7 4. a7 Kb7 5. b6 0:00 2/7 -0.34 43920 1...g4 2. Ke1 Kc5 3. a7 Bb7 4. Na4+ Kxc4 5. b6 e3 0:01 3/8 -0.44 133811 1...g4 2. a7 Bb7 3. Na4 e3+ 4. Ke1 f2+ 5. Kf1 Kc7 6. b6+ Kc6 7. h3 gxh3 0:03 4/9 -0.57 346507 1...g4 2. Ke1 Kc5 3. Kf1 e3 4. a7 Bb7 5. Na4+ Kxc4 6. b6 e2+ 7. Ke1 0:10 5/10 -0.88 1350732 1...g4 2. Ke1 Kc5 3. Kf1 e3 4. Ke1 d3 5. Kd1 d2 6. Na4+ Kxc4 0:19 6/11 -0.91 2683018 1...g4 2. Ke1 Kc5 3. Kf1 e3 4. Ke1 d3 5. Nxd3+ Kxc4 6. a7 Bb7 7. Ne5+ Kxb5 8. Nxg4 0:57 7/12 -0.94 7724830 1...g4 2. Ke1 Kc5 3. Kf1 e3 4. Ke1 f2+ 5. Ke2 Bf5 6. Kf1 Be4 7. h3 gxh3 2:59 8/13 -1.20 24568806 1...g4 2. Ke1 Kc5 3. Kf1 e3 4. Ke1 f2+ 5. Ke2 Bf5 6. Kf1 Be4 7. h3 gxh3 8. Na4+ Kxc4 7:15 9/14 -2.06 60466496 1...g4 2. Ke1 Kc5 3. Kf1 e3 4. Ke1 f2+ 5. Ke2 Bf5 6. Kf1 Be4 7. a7 Kb6 8. a8=Q Bxa8 9. Na4+ Kc7 10. c5 Steve
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