Author: John Merlino
Date: 21:29:12 05/16/04
Go up one level in this thread
On May 16, 2004 at 07:46:09, Dieter Buerssner wrote: >This is from yesterdays ICC tourney. I think, especially without TBs, the >positions might be rather hard. > >[D] 8/1R6/8/7P/2k3P1/1p4K1/8/7r w - - 8 97 > >Here Baron played Rb8, allowing a draw. Rb6 wins (I think, everything else >draws). CM_SKR on a P4-2.4, finds Rb6 in two seconds, but the score is only moderately convincing after three minutes: Time Depth Score Positions Moves 0:00 1/8 0.44 76817 97.Kg2 Rh4 98.Kf3 Kc3 99.Kf4 b2 100.Kf5 Rh1 101.g5 Rxh5 0:00 2/9 0.22 137954 97.Kg2 Rh4 98.Kf3 Kc3 99.Kf4 Rh1 100.Rb8 b2 101.g5 Rf1+ 102.Ke5 b1=Q 103.Rxb1 Rxb1 0:01 3/10 0.11 347797 97.Kg2 Rh4 98.Kf3 Kc3 99.Rc7+ Kd4 100.Rd7+ Kc3 101.Rd1 b2 102.Kg3 Kc2 103.Re1 0:02 3/10 0.24 622896 97.Rb6 Kc3 98.h6 b2 99.g5 Kc2 100.Kf4 b1=Q 101.Rxb1 Kxb1 102.Kf5 0:03 4/11 0.30 863564 97.Rb6 Kc3 98.h6 b2 99.g5 Kc2 100.Kf4 b1=Q 101.Rxb1 Kxb1 102.Kf5 Kc2 0:06 5/12 0.06 1817433 97.Rb6 Kc3 98.h6 b2 99.g5 Kc2 100.Kf4 b1=Q 101.Rxb1 Kxb1 102.Kf5 Kc2 103.Kf6 0:17 6/13 0.30 5127726 97.Rb6 Kc3 98.h6 b2 99.g5 Kc2 100.Kf4 b1=Q 101.Rxb1 Kxb1 102.Kf5 Kc2 103.Kf6 Rh5 0:35 7/14 0.30 10312058 97.Rb6 Kc3 98.h6 b2 99.g5 Kc2 100.Kf4 Rh3 101.Rb8 b1=Q 102.Rxb1 Kxb1 103.Kg4 Rh2 104.Kf5 Kc2 1:33 8/15 0.78 27077973 97.Rb6 Kc3 98.h6 b2 99.g5 Kc2 100.Kg4 Rh2 101.Kf5 Rh3 102.Rxb2+ Kxb2 103.Kf6 Kc3 104.Kg7 Kd4 105.g6 Ke5 3:08 9/16 0.79 55097997 97.Rb6 Kc3 98.h6 b2 99.g5 Kc2 100.Kg4 b1=Q 101.Rxb1 Kxb1 102.Kf5 Kc2 103.Kf6 Kc3 104.Kg7 Kd4 105.g6 Ke5 7:36 10/17 1.08 135293355 97.Rb6 Kc3 98.h6 b2 99.g5 Kc2 100.Kg4 b1=Q 101.Rxb1 Kxb1 102.Kf5 Kc2 103.Kg6 Kc3 104.Kh7 Kd4 105.g6 Ke5 106.g7 32:11 11/18 2.27 569531446 97.Rb6 Kc3 98.h6 b2 99.g5 b1=Q 100.Rxb1 Rxb1 101.h7 Rh1 102.g6 Rh6 103.Kf4 Rxg6 104.h8=Q+ Kc4 105.Qc8+ Kd4 106.Qd7+ Kc3 107.Ke4 Kb2 108.Qd4+ Kb3 109.Qd5+ Kb4 >After Rb8: > >1R6/8/8/7P/2k3P1/1p4K1/8/7r b - - 9 97 > >Now Arasan played Rg1+, which is losing. Kc3 draws (everything else loses). >After Rg1+ the game continued 98.Kf4 Kc3 99.g5 b2 100.Rxb2!? Kxb2 and the two >pawns win against the rook. > >Does any engine without TBs find Rb6 in the first pos with convincing score? And >in the second pos, does any engine without TBs see, that Kc3 is really much >better than alternative moves? The testpositions are not really good, because >the moves can be found without "understanding" the pos. Here are the top 3 moves after 97.Rb6: Time Depth Score Positions Moves 4:00 8/15 0.75 66730427 97...Kc3 98.h6 b2 99.g5 Kc2 100.Kg4 b1=Q 101.Rxb1 Kxb1 102.Kf5 Kc2 103.Kf6 Kc3 104.Kg7 Kd4 105.g6 Ke5 9:55 8/15 1.11 163004775 97...Ra1 98.h6 Rh1 99.Kf4 Kc3 100.Kg5 b2 101.Kg6 b1=Q+ 102.Rxb1 Rxb1 103.h7 Rh1 104.Kg7 Kd4 105.g5 Ke4 106.g6 Kf5 4:35 8/15 1.23 76841820 97...Rf1 98.h6 Kc3 99.g5 Rh1 100.Kf4 b2 101.Kf5 Rh4 102.Rxb2 Kxb2 103.Kg6 Kc3 104.Kh7 Kd4 105.g6 Kd5 jm
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