Author: Ricardo Gibert
Date: 01:03:32 01/31/05
Go up one level in this thread
On January 31, 2005 at 01:34:54, John Merlino wrote: >On January 30, 2005 at 20:36:47, Rob Basham wrote: > >>[D]2b1nrk1/pr3ppp/1q2p3/2p1N1P1/2P5/1P2Q3/P1B2P1P/2KR2R1 w - - 0 1 >> >>Junior5 takes 2 min. 33 sec. to find Bxh7+..! >> >>Saitek RISC takes 7 ply.......3 min. 38 sec. > >FYI, this appears to be a forced Mate in 12. However, The King does not announce >mate in a reasonable amount of time from the root position. Even after forcing >Bxh7 Kxh7 Qh3+ Kg8, it still takes CM9_R1 on a P4-2.4 1:36 to announce a mate. > >jm I get a mate in 13 working interactively with Ruffian, which contributed nearly 1½ hours. I got a shorter mate, but then lost it when Ruffian got enough depth. If you start from 1.Bxh7 Kxh7 2.Qh3+ Kg8 3.Rg4 Qxb3 4.axb3 Rxb3 5.Qxb3 you might see CM lose the shorter mate as well.
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