Author: Brian Katz
Date: 11:42:02 01/01/04
Go up one level in this thread
On January 01, 2004 at 13:24:57, Kurt Utzinger wrote: >On January 01, 2004 at 13:24:13, Kurt Utzinger wrote: > >>On January 01, 2004 at 11:17:32, Brian Katz wrote: >> >>>I have found that Fritz 8 (8.0.0.8 and 8.0.0.23)has trouble solving some >>>positions that other engines solve in a matter of seconds. Such is the case with >>>the recent position: >>> >>>[D]8/8/K6p/6p1/8/8/k5PP/8 w >>> >>>Of course Tablebases are needed to find the mate in 29, which is the case with >>>Ruffian, Yace and Crafty 19.06. Hiarcs finds it in 30. >>> >>>Fritz 8.0.0.8 did not find it at all as yet. Fritz 8.0.0.23 just found it as I >>>am sending this post after 00:08:26, but it shows mate in 31 instead. >>>Once Fritz 8 finds a mate, it seems to end it's search whereas, some other >>>engines continue to search and find quicker mates. >>> >>>Any and all opinions welcomed. >>>Brian >> >> >>New game >>8/8/K6p/6p1/8/8/k5PP/8 w - - 0 1 >> >>Analysis by Fritz 80026: (P4 1.8/32 MB hash) >> >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 >> = (0.06) Depth: 7/9 00:00:00 2kN >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 >> = (0.00) Depth: 8/10 00:00:00 4kN >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 >> = (0.06) Depth: 9/10 00:00:00 7kN, tb=2 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf3 >> = (-0.16) Depth: 10/12 00:00:00 12kN, tb=5 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf3 6.Kf5 >> = (-0.07) Depth: 11/12 00:00:00 20kN, tb=18 >>1.Kb5! >> = (-0.03) Depth: 11/14 00:00:00 25kN, tb=18 >>1.Kb5! >> = (0.12) Depth: 11/14 00:00:00 29kN, tb=18 >>1.Kb5 Kb3 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke3 5.Kf5 Kf2 6.g4 Kf3 7.h3 >> = (0.03) Depth: 12/15 00:00:00 49kN, tb=53 >>1.Kb5 Kb3 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke3 5.Kf5 Kf2 6.g3 Kg2 7.h4 Kxg3 8.hxg5 >> = (0.00) Depth: 13/17 00:00:00 69kN, tb=103 >>1.Kb5 Kb3 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke2 5.Kf5 Kf1 6.g4 Kg2 7.Kg6 Kh3 >> = (-0.07) Depth: 14/18 00:00:00 101kN, tb=265 >>1.Kb5 Kb3 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke2 5.Kf5 Kf1 6.Kg4 Kxg2 7.h4 gxh4 8.Kxh4 >>Kg1 >> = (0.00) Depth: 15/19 00:00:00 145kN, tb=484 >>1.Kb5 Kb2 2.Kc5 Kc2 3.Kd5 Kd2 4.Ke5 Ke2 5.Kf6 g4 6.Kf5 h5 >> = (0.09) Depth: 16/27 00:00:01 306kN, tb=2159 >>1.g4! >> = (0.12) Depth: 16/27 00:00:01 337kN, tb=2736 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Kf3 7.Kf5 >> = (0.22) Depth: 16/27 00:00:01 340kN, tb=2805 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Kf3 7.Kf5 >> = (0.18) Depth: 17/25 00:00:01 390kN, tb=3344 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Kf3 7.Kf5 >> = (0.22) Depth: 18/30 00:00:02 527kN, tb=5715 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Ke3 7.Kg6 Kf4 8.Kh5 Kf3 >>9.h3 Kg3 10.Kxh6 Kh4 >> = (0.18) Depth: 19/32 00:00:02 731kN, tb=11769 >>1.g4! >> ² (0.47) Depth: 20/34 00:00:03 1213kN, tb=17325 >>1.g4! >> ± (0.75) Depth: 20/38 00:00:04 1724kN, tb=18454 >>1.g4! >> ± (1.31) Depth: 20/38 00:00:06 2586kN, tb=19455 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Ke3 7.Kg6 Kf4 8.h3 Ke5 >>9.Kxh6 Kf6 10.Kh5 Kf7 >> +- (4.78) Depth: 20/38 00:00:06 2813kN, tb=23170 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Ke3 7.Kg6 Kf4 8.h3 Ke5 >>9.Kxh6 Kf6 10.Kh5 Kf7 >> +- (4.78) Depth: 21/35 00:00:07 3100kN, tb=40177 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Ke3 7.Kg6 Kf4 8.h3 Ke5 >>9.Kxh6 Kf6 10.Kh5 Kf7 >> +- (4.78) Depth: 22/36 00:00:08 3589kN, tb=111378 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Ke3 7.Kg6 Kf4 8.h3 Ke5 >>9.Kxh6 Kf6 10.Kh5 Ke7 >> +- (4.78) Depth: 23/38 00:00:10 4492kN, tb=254011 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 Kf2 6.Kf6 Ke3 7.Kg6 Kf4 8.h3 Ke5 >>9.Kxh6 Kf6 10.Kh5 Ke7 >> +- (4.78) Depth: 24/40 00:00:14 5845kN, tb=403114 >>1.g4! >> +- (5.06) Depth: 25/39 00:00:18 7737kN, tb=542516 >>1.g4! >> +- (5.34) Depth: 25/39 00:00:19 8841kN, tb=578004 >>1.g4! >> +- (5.90) Depth: 25/41 00:00:26 12939kN, tb=611517 >>1.g4! >> +- (6.18) Depth: 26/41 00:00:37 19515kN, tb=844149 >>1.g4! >> +- (6.47) Depth: 26/41 00:00:42 22512kN, tb=886854 >>1.g4! >> +- (7.03) Depth: 26/45 00:00:46 24887kN, tb=935637 >>1.g4-- >> +- (6.75) Depth: 27/45 00:01:01 36651kN, tb=1231055 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke2 5.Ke6 Ke3 6.Ke5 >> +- (6.72) Depth: 27/47 00:01:38 70190kN, tb=1385092 >>1.g4! >> +- (7.00) Depth: 28/52 00:02:22 100056kN, tb=1642775 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke2 5.Ke6 Ke3 6.Ke5 >> +- (7.03) Depth: 28/52 00:02:37 109578kN, tb=1853829 >>1.g4! >> +- (7.31) Depth: 29/53 00:04:16 179429kN, tb=2246485 >>1.g4! >> +- (7.59) Depth: 29/54 00:04:49 201371kN, tb=2484474 >>1.g4! >> +- (8.15) Depth: 29/56 00:05:49 241615kN, tb=2720717 >>1.g4-- >> +- (7.87) Depth: 30/51 00:10:43 528813kN, tb=4439217 >> >>(Utzinger, MyTown 01.01.2004) >> >> >>New game >>8/8/K6p/6p1/8/8/k5PP/8 w - - 0 1 >> >>Analysis by Fritz 6: >> >>1.g4 >> = (0.09) Depth: 1/2 00:00:00 >>1.g4 Kb3 >> = (0.03) Depth: 2/3 00:00:00 >>1.g4 Kb3 2.Kb5 >> = (0.09) Depth: 3/4 00:00:00 >>1.g4 Kb3 2.Kb5 Kc3 >> = (0.09) Depth: 4/5 00:00:00 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 >> = (0.09) Depth: 5/6 00:00:00 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 >> = (0.09) Depth: 6/7 00:00:00 >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 >> = (0.09) Depth: 7/8 00:00:00 1kN >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 >> = (0.16) Depth: 8/9 00:00:00 3kN >>1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 >> = (0.09) Depth: 9/10 00:00:00 5kN, tb=2 >>1.g4 Kb2 2.Kb5 Kb3 3.Kc5 Kc3 4.Kd5 Kd3 5.Ke5 Ke3 >> = (0.16) Depth: 10/12 00:00:00 11kN, tb=6 >>1.Kb5! >> = (0.19) Depth: 10/13 00:00:00 20kN, tb=9 >>1.Kb5 Kb3 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke2 5.Kf5 Ke3 >> = (0.06) Depth: 11/14 00:00:00 56kN, tb=52 >>1.Kb5 g4 2.Kc4 h5 >> = (0.25) Depth: 12/15 00:00:00 115kN, tb=236 >>1.g4! >> ² (0.28) Depth: 12/15 00:00:00 115kN, tb=237 >>1.g4 Kb2 2.Kb5 Kc2 3.Kc4 Kd2 4.Kd4 Ke2 5.Ke4 Kf2 >> = (0.03) Depth: 13/16 00:00:00 134kN, tb=360 >>1.g4 Kb2 2.Kb5 Kc2 3.Kc4 Kd2 4.Kd4 Ke2 5.Ke4 Kf2 >> = (0.03) Depth: 14/19 00:00:00 199kN, tb=614 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 >> = (-0.09) Depth: 15/19 00:00:00 290kN, tb=1219 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 >> = (-0.09) Depth: 16/21 00:00:00 387kN, tb=1856 >>1.Kb5! >> = (-0.06) Depth: 16/21 00:00:00 442kN, tb=2270 >>1.Kb5 Kb2 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke2 5.Kf6 Kf2 >> ² (0.28) Depth: 16/21 00:00:00 498kN, tb=2813 >>1.Kb5 Kb2 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke2 5.Kf6 Kf2 >> ² (0.28) Depth: 17/21 00:00:01 597kN, tb=4184 >>1.Kb5-- >> = (-0.03) Depth: 18/23 00:00:01 785kN, tb=6742 >>1.Kb5 Kb2 2.Kc5 Kc2 3.Kd4 Kd2 4.Ke5 Ke2 5.Kf6 g4 >> = (0.00) Depth: 18/23 00:00:01 885kN, tb=7109 >>1.g4! >> = (-0.12) Depth: 18/24 00:00:01 918kN, tb=7732 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 >> ² (0.69) Depth: 18/24 00:00:01 940kN, tb=7847 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 >> ² (0.69) Depth: 19/28 00:00:01 997kN, tb=8953 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 >> ± (0.84) Depth: 20/30 00:00:01 1172kN, tb=12385 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 >> ± (1.06) Depth: 21/33 00:00:02 1460kN, tb=17756 >>1.g4! >> ± (1.38) Depth: 22/33 00:00:02 1809kN, tb=22518 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 >> +- (4.72) Depth: 22/33 00:00:02 2019kN, tb=24588 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 >> +- (4.75) Depth: 23/33 00:00:03 2458kN, tb=32806 >>1.g4! >> +- (5.06) Depth: 24/32 00:00:03 2753kN, tb=40108 >>1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 >> +- (5.44) Depth: 24/37 00:00:03 3218kN, tb=42953 >>1.g4! >> +- (5.75) Depth: 25/34 00:00:04 3746kN, tb=52745 >>1.g4 Ka3 2.Ka5 >> +- (#31) Depth: 25/38 00:00:07 6409kN, tb=64543 >> >>(Utzinger, MyTown 01.01.2004) This is particularly interesting, Fritz 6 finds mate in 31 in only 1 second!! Check below. Analysis by Fritz 6: Version 1001 AMD Athlon XP 2600+ 1 Gig DDR SDRAM Hashtables 64 MB 1.g4 = (0.09) Depth: 1/2 00:00:00 1.g4 Kb3 = (0.03) Depth: 2/3 00:00:00 1.g4 Kb3 2.Kb5 = (0.09) Depth: 3/4 00:00:00 1.g4 Kb3 2.Kb5 Kc3 = (0.09) Depth: 4/5 00:00:00 1.g4 Kb3 2.Kb5 Kc3 3.Kc5 = (0.09) Depth: 5/6 00:00:00 1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 = (0.09) Depth: 6/7 00:00:00 1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 = (0.09) Depth: 7/8 00:00:00 1kN, tb=2 1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 = (0.16) Depth: 8/9 00:00:00 3kN, tb=5 1.g4 Kb3 2.Kb5 Kc3 3.Kc5 Kd3 4.Kd5 Ke3 5.Ke5 = (0.09) Depth: 9/10 00:00:00 5kN, tb=20 1.g4 Kb2 2.Kb5 Kb3 3.Kc5 Kc3 4.Kd5 Kd3 5.Ke5 Ke3 = (0.16) Depth: 10/12 00:00:00 10kN, tb=48 1.Kb5! = (0.19) Depth: 10/13 00:00:00 18kN, tb=59 1.Kb5 Kb3 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke2 5.Kf5 Ke3 = (0.06) Depth: 11/14 00:00:00 48kN, tb=155 1.Kb5 g4 2.Kc4 h5 = (0.25) Depth: 12/15 00:00:00 98kN, tb=375 1.g4! ² (0.28) Depth: 12/15 00:00:00 98kN, tb=384 1.g4 Kb2 2.Kb5 Kc2 3.Kc4 Kd2 4.Kd4 Ke2 5.Ke4 Kf2 = (0.03) Depth: 13/15 00:00:00 113kN, tb=554 1.g4 Kb2 2.Kb5 Kc2 3.Kc4 Kd2 4.Kd4 Ke2 5.Ke4 Kf2 = (0.03) Depth: 14/17 00:00:00 158kN, tb=941 1.g4 Kb2 2.Kb6 Kc2 3.Kc6 = (-0.09) Depth: 15/17 00:00:00 205kN, tb=1573 1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Ke2 5.Ke6 Ke3 = (-0.09) Depth: 16/18 00:00:00 270kN, tb=2217 1.Kb5! = (-0.06) Depth: 16/19 00:00:00 301kN, tb=2834 1.Kb5 Kb2 2.Kc5 Kc3 3.Kd5 Kd3 4.Ke5 Ke2 5.Kf6 Kf2 ² (0.28) Depth: 16/21 00:00:00 340kN, tb=3374 1.Kb5-- = (-0.03) Depth: 17/21 00:00:00 419kN, tb=5022 1.Kb5 Kb2 2.Kc5 Kc2 3.Kd4 Kd2 4.Ke5 Ke2 5.Kf6 g4 = (0.00) Depth: 17/21 00:00:00 482kN, tb=5391 1.g4! = (-0.09) Depth: 17/21 00:00:00 497kN, tb=5686 1.g4 Kb2 2.Kb6 Kc2 ² (0.28) Depth: 17/21 00:00:00 498kN, tb=5696 1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Kd3 5.Kd5 ² (0.28) Depth: 18/20 00:00:00 508kN, tb=6176 1.g4! ² (0.59) Depth: 19/20 00:00:00 572kN, tb=7989 1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Kd3 5.Kd5 Ke2 ² (0.47) Depth: 20/22 00:00:00 631kN, tb=10505 1.g4 Kb2 2.Kb6 Kc2 3.Kc6 Kd2 4.Kd6 Kd3 5.Kd5 ² (0.59) Depth: 21/22 00:00:01 690kN, tb=13701 1.g4! +- (#31) Depth: 22/22 00:00:01 752kN, tb=16704 (Katz, Eatontown 01.01.2004)
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