Author: Miguel A. Ballicora
Date: 23:26:26 03/20/02
Go up one level in this thread
On March 21, 2002 at 01:29:39, Slater Wold wrote: >On March 21, 2002 at 00:37:32, Steve wrote: > >>[D]8/8/2b5/8/1k2p3/1p2K3/1B6/8 w - - >> >>I believe this position is a draw (although I can't be sure, because I don't >>have 5-man tablebases). Hiarcs 7.32 evaluates this as a 1.46 pawn advantage for >>Black at depth 13/23. Rebel Century 3 evaluates it as a 1.44 pawn advantage for >>Black at depth 15.00. If I am correct that this is a draw, are other programs >>(without 5-man tablebases) able to see it? Does additional ply depth on faster >>computers enable Hiarcs and Rebel Century to see it? >> >>Any feedback appreciated. >> >> Thanks, >> Steve > >Shredder Paderborn - W,S >8/8/2b5/8/1k2p3/1p2K3/1B6/8 w - - 0 1 > >Analysis by Shredder Paderborn: > >1.Kd2 > -+ (-2.25) Depth: 1/2 00:00:00 >1.Kd2 Kc4 > -+ (-2.29) Depth: 2/4 00:00:00 >1.Kd4 Bb5 > -+ (-2.23) Depth: 2/4 00:00:00 >1.Kd4 Kb5 2.Ba1 > -+ (-2.18) Depth: 2/4 00:00:00 >1.Kd4 Bb7 2.Bc1 > -+ (-2.46) Depth: 3/6 00:00:00 >1.Kd4 Bb7 2.Bc1 > -+ (-2.46) Depth: 3/6 00:00:00 >1.Kd2 Bb7 2.Bh8 > -+ (-2.30) Depth: 3/6 00:00:00 >1.Kd2 Bb7 2.Bh8 > -+ (-2.30) Depth: 3/6 00:00:00 >1.Kf4 Bb7 2.Be5 > -+ (-2.29) Depth: 3/6 00:00:00 >1.Kf4 Bb7 2.Bf6 > -+ (-2.29) Depth: 3/6 00:00:00 >1.Kf4 Bd5 2.Ke3 Kc4 > -+ (-2.30) Depth: 4/8 00:00:00 >1.Kd4 Bb7 > -+ (-2.13) Depth: 4/8 00:00:00 >1.Kd4 Bb7 2.Bc1 Bc6 > -+ (-2.13) Depth: 4/8 00:00:00 >1.Kd4 Bd5 2.Ke3 Bb7 3.Kd2 Bd5 4.Ba1 > -+ (-2.36) Depth: 5/10 00:00:00 >1.Ke2 Bb5+ 2.Kd2 Bd7 > -+ (-2.35) Depth: 5/10 00:00:00 >1.Ke2 Bd5 2.Kd2 Bb7 3.Be5 > -+ (-2.32) Depth: 5/10 00:00:00 >1.Ke2 Bb7 2.Kd2 Bd5 3.Ke2 > -+ (-2.36) Depth: 6/12 00:00:00 >1.Kd4 Bd7 2.Kxe4 > -+ (-2.33) Depth: 6/12 00:00:00 >1.Kd4 Bd5 2.Bc1 Bb7 3.Bb2 Bc6 > -+ (-2.08) Depth: 6/12 00:00:00 >1.Kd4 Bd5 2.Bc1 Bb7 3.Bb2 Bc6 4.Bc1 > -+ (-2.35) Depth: 7/14 00:00:00 6kN, tb=239 >1.Kd4 Bd5 2.Ke3 Bb7 3.Kd2 Bd5 4.Ba1 > -+ (-2.36) Depth: 7/14 00:00:00 7kN, tb=309 >1.Ke2 Bb7 2.Ke3 Bd5 3.Kd2 Bb7 4.Ke3 Bd5 5.Kd2 Bb7 6.Ke3 Bd5 > -+ (-2.35) Depth: 7/14 00:00:00 8kN, tb=347 >1.Ke2 Bb7 2.Ke3 Bd5 3.Kd2 Bb7 4.Ke3 Bd5 5.Kd2 Bb7 6.Ke3 Bd5 > -+ (-2.26) Depth: 7/14 00:00:00 9kN, tb=391 >1.Ke2 Bb7 2.Ke3 Bd5 3.Kd2 Bb7 4.Ke3 Bd5 5.Kd2 Bb7 6.Ke3 Bd5 > -+ (-2.26) Depth: 8/16 00:00:00 13kN, tb=514 >1.Ke2 Bd5 2.Kd2 Kb5 3.Ke2 Ka6 > -+ (-2.28) Depth: 9/18 00:00:01 24kN, tb=838 >1.Ke2 Bb7 2.Ke3 Kc4 3.Bg7 Kd5 4.Bb2 Bc6 5.Kd2 Bb5 > -+ (-2.28) Depth: 10/20 00:00:01 39kN, tb=1179 >1.Ke2 Bd5 2.Kd2 Kc4 > -+ (-2.28) Depth: 11/22 00:00:01 50kN, tb=1462 >1.Ke2 Bb7 2.Ke3 Ba8 > -+ (-2.27) Depth: 12/24 00:00:01 79kN, tb=1909 >1.Kd4 Bd5 2.Ke3 Ba8 3.Ke2 Bd5 4.Kd2 Kc4 5.Be5 Bb7 6.Ke2 > -+ (-2.26) Depth: 12/24 00:00:01 80kN, tb=1926 >1.Kd4 Bd5 2.Ke3 Ba8 3.Ke2 Bd5 4.Kd2 Kc4 5.Be5 Bb7 6.Ke2 > -+ (-2.26) Depth: 12/24 00:00:02 82kN, tb=1941 >1.Kd4 Bd5 2.Ke3 Ba8 3.Ke2 Bd5 4.Kd2 Kc4 5.Be5 Bb7 6.Ke2 > -+ (-2.26) Depth: 13/25 00:00:02 100kN, tb=2178 >1.Kd4 Bd5 2.Ke3 Ba8 3.Ke2 Bd5 4.Kd2 Kc4 5.Be5 Bb7 6.Ke2 > -+ (-2.26) Depth: 14/26 00:00:02 117kN, tb=2394 >1.Kd4 Bb7 2.Ke3 Bd5 3.Kd2 Bg8 > -+ (-2.29) Depth: 15/27 00:00:03 183kN, tb=3333 >1.Ke2 Bb7 2.Ke3 Bd5 3.Kd2 Bg8 4.Ke3 Bh7 > -+ (-2.28) Depth: 15/27 00:00:03 216kN, tb=3952 >1.Ke2 Bd5 2.Kd2 Kc4 3.Ke2 > -+ (-2.28) Depth: 15/27 00:00:03 252kN, tb=4127 >1.Ke2 Bb7 2.Ke3 Ba8 3.Ke2 e3 > -+ (-2.29) Depth: 16/28 00:00:05 370kN, tb=6116 >1.Kd4 Bb7 2.Ke3 Ba8 3.Ke2 e3 4.Kxe3 > -+ (-2.28) Depth: 16/28 00:00:05 374kN, tb=6261 >1.Kd4 Bb7 2.Ke3 Ba8 3.Ke2 Bd5 4.Kd2 Kc4 5.Ke2 Kb5 6.Kd1 Kc4 7.Bc1 > -+ (-2.28) Depth: 16/28 00:00:05 394kN, tb=6646 >1.Kd4 Bd5 2.Ke3 Kc4 3.Ke2 Bb7 > -+ (-2.29) Depth: 17/29 00:00:06 463kN, tb=7840 >1.Ke2 Bb7 2.Ke3 Ba8 3.Ke2 Bd5 4.Kd2 Kc4 5.Ke2 Bb7 > -+ (-2.28) Depth: 17/29 00:00:06 485kN, tb=8659 >1.Ke2 Bb7 2.Ke3 Ba8 3.Ke2 Bd5 4.Kd2 Kc4 5.Ke2 Bb7 > -+ (-2.28) Depth: 17/29 00:00:06 509kN, tb=8828 >1.Ke2 Bb7 2.Kd1 Ba8 3.Ke1 Bd5 4.Kd1 Ba8 5.Ke1 Bd5 6.Kd1 Ba8 7.Ke1 > -+ (-2.27) Depth: 18/30 00:00:10 731kN, tb=15892 >1.Ke2 Bb7 2.Kd1 Bd5 3.Kd2 Kc4 4.Ke2 Bc6 5.Ke3 Kb5 6.Ke2 e3 > -+ (-2.24) Depth: 19/31 00:00:11 1003kN, tb=19268 >1.Ke2 Bb7 2.Kd1 Bd5 3.Kd2 Kc4 4.Bg7 Kb5 > -+ (-2.24) Depth: 20/32 00:00:13 1249kN, tb=25790 >1.Ke2 Bd5 2.Kd2 Kc4 3.Bg7 Bg8 4.Ke3 Kb5 > -+ (-2.25) Depth: 21/33 00:00:26 3923kN, tb=79718 >1.Ke2 Bd5 2.Kd2 Kc4 3.Bg7 Bb7 4.Bb2 Ba8 5.Bg7 Kd5 6.Ke3 Kc6 > -+ (-2.25) Depth: 22/34 00:00:31 5219kN, tb=108149 >1.Ke2 Bd5 2.Kd2 Bb7 3.Ke2 Bc6 4.Kd2 Bd5 5.Bc3+ Ka3 6.Kc1 Ka2 7.Bb4 > -+ (-2.25) Depth: 23/35 00:00:36 7044kN, tb=150528 >1.Ke2 Bd5 2.Kd2 Bb7 3.Ke2 Bc6 4.Kd2 Bd5 5.Bc3+ Ka3 6.Kc1 Ka2 7.Bb4 > -+ (-2.25) Depth: 24/36 00:00:45 10226kN, tb=242278 >1.Ke2 Bd5 2.Kd2 Bb7 3.Ke2 Bc6 4.Kd2 Bd5 5.Bc3+ Ka3 6.Kc1 Ka2 7.Bb4 Ba8 8.Kd1 > -+ (-2.25) Depth: 25/37 00:00:54 14206kN, tb=322104 >1.Ke2 Bd5 2.Kd2 Bb7 3.Ke2 Bc6 4.Kd2 Bd5 5.Bc3+ Ka3 6.Kc1 Ka2 7.Bb4 Ba8 8.Kd1 > -+ (-2.25) Depth: 26/38 00:01:05 20276kN, tb=457969 >1.Ke2 Bd5 2.Kd2 Bb7 3.Ke2 Bc6 4.Ke3 Ba8 5.Ke2 Kc4 6.Kd2 Kb5 7.Kc3 Ka4 8.Bc1 Bb7 >9.Bb2 Bc8 10.Bc1 Ba6 11.Kd4 Ka5 > -+ (-2.20) Depth: 27/39 00:02:05 40149kN, tb=920509 >1.Ke2 Kc4 2.Kd2 Ba8 3.Ba3 Bd5 4.Bc1 Be6 5.Bb2 Bg4 6.Ke3 Bf3 7.Kd2 > -+ (-2.25) Depth: 28/40 00:03:05 53514kN, tb=1375878 >1.Ke2 Kc4 2.Kd2 Ba8 3.Ba3 Bd5 4.Bc1 Be6 5.Bb2 Bg4 6.Ke3 Bf3 7.Kd2 > -+ (-2.25) Depth: 29/41 00:03:59 63915kN, tb=1638597 > >(W, 21.03.2002) > > >Notice the score is the same from start to finish. Notice there are no captures >in the mainline. I am 99.99% it's a draw. I am 100.00% :-) sure that is a draw. This is a well known theoretical position. with pawns b and e there is no way to win as long as the bishop and the king are in the right spot of course. In the position of the diagram things are the easiest for the defending side. The fortress is built already. Regards, Miguel
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