Author: Jorge Pichard
Date: 11:24:02 07/21/03
Go up one level in this thread
On July 21, 2003 at 06:33:53, George Tsavdaris wrote: >On July 21, 2003 at 03:10:46, Eduard Nemeth wrote: > >>On July 21, 2003 at 02:54:55, Uri Blass wrote: >> >>>On July 20, 2003 at 14:00:45, Eduard Nemeth wrote: >>> >>>>Fritz 8 cannot win an easily won position, but however the amateur LIST!! >>> >>> >>>I believe that you simply did not give Fritz enough time. >>> >>>some analysis by Fritz8.008 >>> >>>New game >>>[D]3b4/6k1/P7/6p1/KP6/Q4q2/8/8 b - - 0 1 >>> >>>Analysis by Fritz 8: >>> >>>1...Qxa3+! >>> -+ (-2.47) Depth: 13/47 00:12:34 268960kN, tb=990 >>>(Blass, Tel-Aviv 21.07.2003) >> >>In this position after 75 moves (!) neither humans nor computer has 12 minutes >>time. >> >>Fritz 8 cannot do it, so simply is that! >> >>Eduard > >IT'S NOT FRITZ 8 THAT CAN'T SOLVE THIS PROBLEM, BUT FRITZ 8 + HARDWARE. > >In my PIV 1500 MHz with 48 MiB hash tables and all 3-4 and some >5 piece endgame tablebases Fritz 8.00.8 solves this in 3:19 minutes. >In a newer PIV 2.4 GHz and up or in a "super" hardware like that played with >Kramnik, solution time will be much lower. > >Analysis by Fritz 8.00.8: > >1...Qf3xa3+ 2.Ka4xa3 Bd8-b6 3.Ka3-a4 g5-g4 4.Ka4-b5 g4-g3 5.Kb5xb6 g3-g2 > -+ (-1.44) Depth: 7/11 00:00:00 41kN, tb=4 >1...Qf3xa3+-- > µ (-1.16) Depth: 8/12 00:00:00 104kN, tb=7 >1...Qf3xa3+ 2.Ka4xa3 Bd8-b6 > µ (-1.16) Depth: 8/13 00:00:00 104kN, tb=7 >1...Qf3-c6+! > µ (-1.19) Depth: 8/24 00:00:00 250kN, tb=7 >1...Qf3-c6+ 2.b4-b5 Qc6-e4+ 3.Qa3-b4 Qe4xb4+ 4.Ka4xb4 Bd8-b6 5.Kb4-c4 Kg7-f6 >6.Kc4-d5 g5-g4 7.Kd5-c6 > µ (-1.31) Depth: 8/24 00:00:00 303kN, tb=8 >1...Qf3-c6+! > -+ (-1.59) Depth: 9/25 00:00:01 1104kN, tb=21 >1...Qf3-c6+ 2.b4-b5 Qc6-c4+ 3.Qa3-b4 Qc4-a2+ 4.Qb4-a3 Qa2xa3+ 5.Ka4xa3 Bd8-b6 >6.Ka3-b3 Kg7-f6 7.Kb3-b4 Kf6-e5 8.Kb4-c4 > -+ (-1.84) Depth: 9/26 00:00:02 1234kN, tb=23 >1...Qf3-c6+ 2.b4-b5 Qc6-c4+ 3.Qa3-b4 Qc4-a2+ 4.Qb4-a3 Qa2xa3+ 5.Ka4xa3 Bd8-b6 >6.Ka3-b3 Kg7-f6 7.Kb3-b4 Kf6-e5 8.Kb4-c4 > -+ (-1.84) Depth: 10/29 00:00:04 2369kN, tb=94 >1...Qf3-c6+! > -+ (-2.13) Depth: 11/36 00:00:17 10251kN, tb=438 >1...Qf3-c6+ 2.b4-b5 Qc6-c4+ 3.Qa3-b4 > -+ (-2.16) Depth: 11/36 00:00:19 11567kN, tb=497 >1...Qf3-c6+! > -+ (-2.44) Depth: 12/35 00:00:36 21651kN, tb=975 >1...Qf3-c6+! > -+ (-2.72) Depth: 13/46 00:02:31 88264kN, tb=6089 >1...Qf3xa3+! > -+ (-2.75) Depth: 13/46 00:03:18 122931kN, tb=9254 >1...Qf3xa3+! > -+ (-2.91) Depth: 13/46 00:03:18 122941kN, tb=9264 >1...Qf3xa3+! > -+ (-3.22) Depth: 13/46 00:03:18 122955kN, tb=9274 >1...Qf3xa3+! > -+ (-3.84) Depth: 13/46 00:03:18 122979kN, tb=9300 >1...Qf3xa3+ 2.Ka4xa3 Bd8-b6 3.Ka3-a4 g5-g4 4.Ka4-b5 Bb6-f2 5.Kb5-a5 g4-g3 >6.b4-b5 g3-g2 7.b5-b6 > -+ (-9.13) Depth: 13/46 00:03:19 123133kN, tb=9560 >1...Qf3xa3+-- > -+ (-8.84) Depth: 14/21 00:03:35 127706kN, tb=10063 >1...Qf3xa3+ 2.Ka4xa3 Bd8-b6 3.Ka3-a4 g5-g4 4.Ka4-b5 Bb6-f2 5.Kb5-a5 g4-g3 > -+ (-8.69) Depth: 14/31 00:03:35 127734kN, tb=10245 >----------------------------------------------------------------------- Analysis by Fritz 8.0.0.8 1...Qxa3+ 2.Kxa3 Bb6 3.Ka4 g4 4.Kb5 Bf2 5.Kc6 g3 6.Kb7 g2 7.a7 Bxa7 8.Kxa7 g1Q+ 9.Ka6 Qa1+ 10.Kb5 Qe5+ 11.Ka4 Qd4 -+ (-2.09) Depth: 7/10 00:00:00 3kN -+ (-8.69) Depth: 19/37 00:00:06 5302kN (Pichard, Jorge's Home 21.07.2003) Even without Tablebase can can solve this endgame
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