Author: Anthony Cozzie
Date: 22:08:05 04/03/03
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On April 03, 2003 at 17:35:16, George Tsavdaris wrote: >Is there any engine can find the right move in this incredible position >in a reasonable time? All the engines i tried on my 1500 MHz PC failed. >Even Fritz 8 after 20 minutes didn't find the move. > >The amazing move is 1.Bc7!! After that 1...Qxc8 is forced. 1...Qxc8 >2.gxf7+ Kh8 [2...Kf8 3.Bd6#] >3.Be5 Qc5 The only move. >4.Bb2! Nc7 Again the only move. >5.Ba1 a4 6.Bb2 a3 7.Ba1 a2 8.Bb2 a1Q 9.Bxa1 And black has no other moves! 1-0 > >[D]n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w - - 0 1 A *very* tough position! Root: 1. gxh7 Kh8 2. Qxa8 a4 3. Qd5 Qf8 4. Ke5 Kxh7 5. Qd3 Kg8 6. Bf6 Qb8 7. Kf5 Qc8 8. Kf4 Qc1 9. Kg3 = (2.68) Depth: 14 00:32:59.84 752994kN After forcing Bc7 Qxc8: 1. gxf7 Kh8 2. Be5 Qc5 3. Bb2 Nc7 4. Ba1 a4 5. Bb2 a3 6. Ba1 a2 7. Bb2 a1=Q 8. Bxa1 Nb5 9. Ke6 Nc3 10. Bxc3 Qxc3 11. f8=Q = MAT10 Depth: 16 00:04:50.02 107802kN So it looks like this position would require an 18 ply search, or ~10 hours for Zappa (AMD 1.5GHZ) anthony
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