Author: Thomas McBurney
Date: 18:29:41 03/22/04
Go up one level in this thread
On March 21, 2004 at 12:14:16, William Kerr wrote: >[D]3R1B1K/5p2/2p2p2/b1rPNP1n/q1rkNP2/1Pp2Q1p/1n6/5B2 w - - bm Re8;id mate in 4, >Re8, Qxb3, Nxc5, Rxc5, Nxc6+, Rxc6, Qe4++; > >Tricky mate in 4 for dedicated machines and for some Null movers. > >Problem composed by L. Zagoruiko in 1972. Interesting, my chess program Kanguruh found a completely different line. It took 6.5 seconds on a Athlon 650. 2 522 61 15651 b3a4 ?? 2 537 64 17197 b3a4 2 553 65 18016 f8c5 !! 2 537 65 18347 f8c5 c4c5 b3a4 3 573 66 19487 f8c5 c4c5 e5c6 a4c6 d5c6 a5d8 3 576 76 28888 e4c5 !! 3 573 79 31623 e4c5 c4c5 b3a4 4 603 89 40914 e4c5 c4c5 b3a4 f6e5 5 633 155 124428 e4c5 !! 5 689 188 151551 e4c5 c4c5 f8c5 d4c5 e5d7 c5d6 d7b6 d6c7 5 693 472 587619 e5g4 !! 5 689 489 603651 e5g4 a5d8 f3e3 d4d5 e4f6 d8f6 g4f6 h5f6 e3e5 d5e5 6 31990 643 895005 e5g4 a5d8 f3e3 d4d5 e4f6 d8f6 g4f6 h5f6 e3e5 d5e5 0 0 0 0 Mate in 4
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