Author: Thomas Mayer
Date: 04:10:55 01/31/04
Go up one level in this thread
Hi Kurt, >>>The position below is from a 90m+30s game between >>>Shredder8 and ChessTiger15 in which White easily >>>won with 45.Qf6 and an won pawn ending. >> >>Another one, where White even gives a bishop to being exchange queens and >>transpose into a won pawn endgame (KPP-KPP only). It occured in a game Crafty >>17.14 - Delfi 4.2, 40/10m P3/700 MHz. IIRC, only 4-piece tbs. were available. >> >>[D]8/8/2q1k3/1p2B3/3Q4/PKP5/1P6/8 w - - 0 86 >> >>86.Qd6+! >> >>I don't know if it's the fastest way to mate (I guess so), but also Qd6+ is >>human-like IMO, because after the very simple >> >>86. Qd6+ Qxd6 87. Bxd6 Kxd6 88. a4 >> >>it's very easy for White. So no need to deal with "endless" counter-checks from >>a black queen... >> >>Analysis by Crafty 19.06, P3/700 MHz: >> >>86.Kb4 Qb7 87.Qc5 Kf5 88.Qxb5 Qa8 89.Bd6+ Kg6 90.Qd3+ Kf6 91.Qd4+ Kf7 92.a4 >> +- (7.84) Depth: 1/7 00:00:00 >> +- (9.50) Depth: 10/25 00:00:10 3613kN, tb=9 >>86.Qd6+ Qxd6 87.Bxd6 Kxd6 88.Kb4 Kc6 89.a4 Kb6 90.b3 Kc6 91.a5 Kd6 92.Kxb5 Kd5 >>93.a6 >> +- (10.58) Depth: 10/25 00:00:11 3747kN, tb=13 >> +- (11.44) Depth: 13/32 00:00:22 8183kN, tb=223 >> >>Regards, >>Mike Scheidl > > > Hi Mike > It's quite remarkable that Crafty 19.06 found the most > easiest and human-like win with Qd6+. Most engines are > simply unable to do so [exception = Deep Sjeng 1.5 UCI]. > Kurt for Quark this seems to be easy - it chooses that move after 2 seconds on Athlon MP1800+: 00:00:00 d->05 +6.95 c3c4 b5c4 d4c4 c6d5 e5f4 d5c4 b3c4 e6f5 f4e3 TBHits:1 00:00:00 d->07 +7.03 c3c4 c6f3 b3b4 b5c4 d4d6 e6f7 d6d7 f7f8 d7g7 f8e8 g7g8 e8d7 g8c4 TBHits:10 00:00:00 d->07 +7.03 c3c4 c6f3 b3b4 b5c4 d4d6 e6f7 d6d7 f7f8 d7g7 f8e8 g7g8 e8d7 g8c4 TBHits:11 00:00:00 d->08 +7.01 c3c4 c6f3 b3b4 b5c4 d4d6 e6f5 d6f6 f5e4 f6c6 e4e3 e5d4 e3e2 c6f3 TBHits:37 00:00:00 d->08 +7.01 c3c4 c6f3 b3b4 b5c4 d4d6 e6f5 d6f6 f5e4 f6c6 e4e3 e5d4 e3e2 c6f3 TBHits:47 00:00:01 d->09 +7.27 c3c4 c6f3 b3b4 b5c4 d4c4 e6d7 c4c7 d7e8 b2b3 f3e4 b4b5 e4d5 b5a4 d5d3 TBHits:155 00:00:01 d->09 +7.93 d4d6! TBHits:175 00:00:01 d->09 +8.18 d4d6 c6d6 e5d6 e6d7 b3b4 d7c6 d6c5 c6d5 b4b5 TBHits:212 00:00:02 d->10 +8.48 d4d6! TBHits:228 00:00:02 d->10 +8.82 d4d6 c6d6 e5d6 e6d7 c3c4 b5b4 a3b4 d7c6 d6c5 c6d7 b4b5 TBHits:270 00:00:03 d->10 +8.82 d4d6 c6d6 e5d6 e6d7 c3c4 b5b4 a3b4 d7c6 d6c5 c6d7 b4b5 TBHits:478 00:00:04 d->11 +9.11 d4d6 c6d6 e5d6 e6d7 a3a4 d7e6 a4b5 e6d7 c3c4 d7e6 TBHits:563 00:00:06 d->11 +9.11 d4d6 c6d6 e5d6 e6d7 a3a4 d7e6 a4b5 e6d7 c3c4 d7e6 TBHits:831 00:00:07 d->12 +9.42 d4d6! TBHits:894 00:00:07 d->12 +9.42 d4d6 c6d6 e5d6 e6d7 c3c4 d7e6 c4b5 e6d5 d6e7 d5e5 b5b6 e5e4 b6b7 TBHits:1081 00:00:13 d->12 +9.42 d4d6 c6d6 e5d6 e6d7 c3c4 d7e6 c4b5 e6d5 d6e7 d5e5 b5b6 e5e4 b6b7 TBHits:1890 00:00:13 d->13 +9.72 d4d6! TBHits:1916 00:00:15 d->13 +10.19 d4d6 c6d6 e5d6 e6d7 a3a4 b5b4 c3b4 d7c6 b4b5 c6b7 a4a5 TBHits:2847 00:00:28 d->13 +10.19 d4d6 c6d6 e5d6 e6d7 a3a4 b5b4 c3b4 d7c6 b4b5 c6b7 a4a5 TBHits:4784 00:00:28 d->14 +10.66 d4d6! TBHits:4817 00:00:28 d->14 +11.90 d4d6!! TBHits:4821 00:00:32 d->14 +15.92 d4d6!!! TBHits:5672 00:00:38 d->14 +17.15 d4d6 c6d6 e5d6 e6d7 d6b4 d7e6 c3c4 e6e5 c4b5 e5d5 b5b6 d5e4 b6b7 e4d4 a3a4 d4d3 TBHits:10510 00:00:59 d->14 +17.15 d4d6 c6d6 e5d6 e6d7 d6b4 d7e6 c3c4 e6e5 c4b5 e5d5 b5b6 d5e4 b6b7 e4d4 a3a4 d4d3 TBHits:14130 00:01:02 d->15 +17.45 d4d6! TBHits:15697 00:01:03 d->15 +17.46 d4d6 c6d6 e5d6 e6d7 a3a4 b5b4 a4a5 d7c6 a5a6 c6d7 a6a7 d7e6 b3b4 e6d7 d6f4 d7e6 a7a8q TBHits:16379 with your position it had way more problems and did need slightly over 5 minutes to find the correct move. Greets, Thomas
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