Author: Christophe Theron
Date: 08:58:08 12/28/03
Go up one level in this thread
On December 28, 2003 at 10:48:55, Robert Hyatt wrote: >On December 27, 2003 at 17:47:08, Christophe Theron wrote: > >>On December 27, 2003 at 09:32:46, Sune Fischer wrote: >> >>>On December 27, 2003 at 00:51:11, Mike Byrne wrote: >>> >>>> >>>>[d]8/r7/8/5bk1/8/5B2/5RPP/6K1 b - - 0 1 >>>>Crafty19.08 SE UCI 2 MB: >>> >>>Just 2 MB? :) >>> >>>> 7 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>>> 8 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>>> 9 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>>>10 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>>>11 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>>>12 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>>>13 00:01 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>>>14 00:04 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>>>15 00:06 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>> >>> >>>I do not understand how everybody can solve that so fast..:( >>> >>>frenzee needs almost 17 seconds. >>> >>>10 242 620 4841759 1...Ra1+ >>>10 235 723 5652670 1...Ra1+ 3.Rf1 Ra3 4.g3 Rb3 5.h4+ Kg6 6.Rf2 Kf6 7.Be4 Rxg3+ >>>11 236 1043 8219719 1...Ra1+ 3.Rf1 Ra3 4.g3 Bh3 5.Bg2 Bf5 6.Re1 Ra2 7.Re7 Kf6 12 >>>0 1690 13513082 1...Ra1+ 3.Rf1 Rxf1+ 4.Kxf1 Bh3 5.gxh3 Kf6 6.Kf2 Kg7 7.Bd5 13 0 >>>1706 13682948 1...Ra1+ 3.Rf1 Rxf1+ 4.Kxf1 Bh3 5.gxh3 Kf6 6.Kf2 Kg7 7.Bd5 >>> >>>-S. >> >> >> >>By evaluation. After Ra1+ Rf1 Rxf1+ Kxf1 Bh3 gxh3 the position is a theorical >>draw because you only have pawns on the H file, the Bishop is not of the color >>of the promotion square and the opponent's King is already too close from this >>promotion square. >> >>Adding this evaluation rule will not make your program stronger, but you will be >>proud to answer to this kind of message "yes, my program solves it in >>0:00:00.00s". :) >> >> >> >> Christophe > > >Actually this _will_ make your engine stronger. In 1981 we played a game vs >USCF master Joe Sentef and this came up. We were winning and he offered a free >piece which would have left us in exactly such a drawn position. Fortunately >we knew about this back in 1981 and we did not take the piece and won the game >handily... > >I've seen it happen multiple times on ICC. Not frequently, but frequently >enough that it makes a difference.
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