Author: Ricardo Gibert
Date: 00:21:20 02/20/06
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On February 19, 2006 at 22:11:11, Sean Mintz wrote: >As I try to figure this out, perhaps you have an idea as to what it might be: > >[D]8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - > >depth correct what I get > >1 14 14 >2 191 191 >3 2,812 2,812 >4 43,238 43,238 >5 674,624 674,624 >6 11,030,083 11,030,078 > >So, at a depth of 6 ply, I come up 5 moves short. > >Sean After a bit of brain storming, I came up with: (1) White has 5 legal moves that lead to a promotion by Black on ply 6: g4, e4, Rb3, Rb2, Rb1. (2) Black can queen a pawn by ply 6 at 5 possible queening squares: d1, e1, f1, g1, h1. Moreover, all of these promotions can be achieved by a capture on the queening square. (3) Some of Blacks promotions give check. This may be one of your special cases that may be causing a problem. Some if not all of the above are surely merely coincidental. Nevertheless I hope it helps. Good luck!
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