Author: Vincent Diepeveen
Date: 16:46:55 12/26/99
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On December 26, 1999 at 17:10:51, Ernst Walet wrote: >On December 26, 1999 at 16:25:48, James Robertson wrote: > >>On December 26, 1999 at 15:51:06, Ernst Walet wrote: >> >>>Going through some EPD collections I´ve found an interresting position, once >>>posted by Ed Schroder. I tested Shredder3, Hiarcs 7.32 and Nimzo 99 with it. >>>Nimzo was the only one who was able to see the danger in tournament time. >>>Hiarcs and Shredder did not see it within a hour. Used machine PIII-450 with >>>64MB hash. How are Shredder 4 and Junior 6 doing here? >>> >>>Ernst-J. >> >>Perhaps you should post the position....? >> >>James > > >Oh boy, clumsy me. Here it is. > >6k1/p3b1np/6pr/6P1/1B2p2Q/K7/7P/8 w - - am Qxh6 > >Ernst-J. With cleaned hashtables diep needs 4:43 to see black getting a queen (so to get a fail low for Qxh6??). That's pretty long actucally, but i guess that no matter how high you evaluate a passer, you only see this position when you see it queen. So asked is for the time to see the passers promote. For diep that answer is 15 ply and 4:45 and 16M nodes. 00:00 5 (0) 1 5.77 Qh4xh6 00:00 135 (0) 2 4.40 Qh4xh6 Ng7-f5 Qh6-h3 Be7xg5 00:00 399 (0) 3 4.40 Qh4xh6 Ng7-f5 Qh6-h3 Be7xg5 00:00 1018 (0) 4 4.40 Qh4xh6 Ng7-f5 Qh6-h3 Be7xg5 00:00 2559 (0) 5 4.60 Qh4xh6 Ng7-f5 Qh6-h3 Be7xg5 Qh3-b3 Kg8-g7 00:00 5015 (0) 6 4.81 Qh4xh6 Ng7-f5 Qh6-h3 Be7xg5 Qh3-b3 Kg8-g7 Qb3-e6 00:00 12894 (389) 7 5.68 Qh4xh6 Ng7-f5 Qh6-h3 Be7xg5 Qh3-b3 Kg8-g7 Bb4-c3 Kg7-h6 Ka3-b4 00:00 32380 (3851) 8 5.87 Qh4xh6 Ng7-f5 Qh6-h3 Be7xg5 Qh3-b3 Kg8-g7 Bb4-c3 Kg7-h 6 Qb3-b7 Bg5-e7 Ka3-b3 00:01 93805 (7899) 9 5.33 Qh4xh6 Be7xb4 Ka3xb4 Ng7-h5 Kb4-c3 a7-a5 Kc3-c4 a5-a4 Kc4-d4 a4-a3 00:03 205449 (31695) 10 5.33 Qh4xh6 Be7xb4 Ka3xb4 Ng7-h5 Kb4-c3 a7-a5 Kc3-c4 a5- a4 Kc4-c3 a4-a3 Kc3-d4 00:07 402358 (38945) 11 5.03 Qh4xh6 Be7xb4 Ka3xb4 Ng7-h5 Kb4-c3 a7-a5 Kc3-c4 a5- a4 Kc4-c3 a4-a3 Kc3-b3 e4-e3 Kb3-c3 a3-a2 Kc3-b2 00:14 858132 (98833) 12 4.91 Qh4xh6 Be7xb4 Ka3xb4 Ng7-h5 Kb4-c3 a7-a5 Kc3-c4 a5- a4 Kc4-c3 a4-a3 Kc3-c2 a3-a2 Kc2-b2 e4-e3 h2-h3 00:31 1886202 (211185) 13 3.83 Qh4xh6 Be7xb4 Ka3xb4 Ng7-h5 Kb4-c3 a7-a5 Kc3-c4 a 5-a4 Kc4-c3 a4-a3 Kc3-c2 e4-e3 h2-h3 e3-e2 Kc2-d2 a3-a2 Kd2xe2 01:47 6252919 (787201) 14 3.77 Qh4xh6 Be7xb4 Ka3xb4 Ng7-h5 Kb4-c3 a7-a5 Kc3-c4 a 5-a4 Kc4-c3 a4-a3 Kc3-c2 e4-e3 h2-h3 e3-e2 Kc2-d2 a3-a2 Kd2xe2 04:43 16680353 (4006689) 15 -4.48 Qh4xh6 Be7xb4 Ka3xb4 Ng7-h5 Kb4-c4 a7-a5 Kc4-d 4 a5-a4 Kd4xe4 a4-a3 Ke4-f3 a3-a2 Kf3-g2 a2-a1Q Kg2-h3 Qa1-e5
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