Author: John Merlino
Date: 13:50:05 12/24/02
Go up one level in this thread
On December 24, 2002 at 04:11:44, Steve Maughan wrote: >>>r5r1/n1q1p2k/3pPpp1/P1pP4/2P4N/R1B5/2Q3PP/7K w - - bm Bd2; id "BBC958" >> >>Yace finds Bd2 fast with score mate in 10, then switches to Be1 with score mate >>in 9. In the automatically generated table below, it is considered unsolved. > >WOW - I hadn't realised that there was a shorter mate. In BBC they state that >the best move is Bxf6 but CM 8000 found Bd2 really quickly. I've always >considered this a good test for threat detection / extension. Guess what. There's another mate in 9 -- Bb4!! But, the surprise is that ALL THREE of those moves lead to mate in 9 (or shorter!). Here are the best three moves, according to CM9000 on a P3-733: Time Depth Score Positions Moves 2:00:08 7/16 Mate09 891127919 1.Be1 Qxa5 2.Bxa5 Rg7 3.Rh3 Kg8 4.Nxg6 Rh7 5.Rxh7 Nc6 6.Nxe7+ Nxe7 7.Rxe7 Rxa5 8.Qh7+ Kf8 9.Qf7# 2:04:15 7/16 Mate09 923474411 1.Bb4 Qxa5 2.Bxa5 Rg7 3.Rh3 Kg8 4.Nxg6 Rh7 5.Rxh7 Nc6 6.Nxe7+ Nxe7 7.Rxe7 Rxa5 8.Qh7+ Kf8 9.Qf7# 2:08:53 7/16 Mate09 959135672 1.Bd2 Qxa5 2.Bxa5 Rg7 3.Rh3 Kg8 4.Nxg6 Rh7 5.Rxh7 Nc6 6.Nxe7+ Nxe7 7.Rxe7 Rxa5 8.Qh7+ Kf8 9.Qf7# jm
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