Author: Axel Schumacher
Date: 11:58:27 05/16/03
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On May 16, 2003 at 14:05:12, John Merlino wrote: >In the round 1 game between The King and Ant, The King makes a bishop sacrifice >that leads to a forced mate in 15 moves. > >[D]5rk1/p4p1p/2p2npQ/4r3/1p3N2/qP3P1B/P6P/KR4R1 w - - 0 26 > >Finding 26.Be6! is probably not hard for today's engines. But how many can >announce the mate?? > >On my humble P3-733, The King (using the CM_SKR personality) announces mate in 3 >minutes and 17 seconds.... > >Time Depth Score Positions Moves >0:00 1/3 1.67 3647 26.Rgc1 Qa6 27.Rd1 Rfe8 >0:00 1/4 1.50 12314 26.Rgc1 Ra5 27.Rc2 Rd8 28.Bf1 Nh5 > 29.Nxh5 Rxh5 >0:00 1/4 1.75 16274 26.Bf1 Rfe8 27.Bc4 Nd5 28.Nxd5 cxd5 >0:00 1/4 1.86 25898 26.Rgd1 Rfe8 27.Bd7 Ra5 28.Rb2 >0:00 1/5 1.69 55971 26.Rgd1 Rfe8 27.Bd7 Nxd7 28.Rxd7 > Re1 29.Nd3 >0:00 1/5 2.38 86250 26.Be6 Rxe6 27.Nxe6 fxe6 28.Rxg6+ > hxg6 29.Qxg6+ Kh8 30.Rg1 Ng4 31.Qh5+ > Kg7 32.Rxg4+ Kf6 33.Qg5+ Kf7 >0:01 1/6 7.64 140306 26.Be6 Rxe6 27.Nxe6 fxe6 28.Rxg6+ > hxg6 29.Qxg6+ Kh8 30.Rg1 Rf7 31.Qxf7 > Ng4 32.fxg4 >0:01 1/7 7.53 197761 26.Be6 Rxe6 27.Nxe6 fxe6 28.Rxg6+ > hxg6 29.Qxg6+ Kh8 30.Rg1 Rf7 31.Qxf7 > Ng4 32.Qh5+ Kg7 33.Qxg4+ Kf7 >0:03 1/8 8.44 409182 26.Be6 Rxe6 27.Nxe6 fxe6 28.Rxg6+ > hxg6 29.Qxg6+ Kh8 30.Rg1 Rf7 31.Qxf7 > Ng4 32.fxg4 Qa5 33.Qf6+ Kh7 34.Qxe6 >0:27 1/9 17.44 3495795 26.Be6 Rxe6 27.Nxe6 fxe6 28.Rxg6+ > hxg6 29.Qxg6+ Kh8 30.Rg1 Qc1+ 31.Rxc1 > Ng4 32.Qxg4 Rxf3 33.Qxf3 a6 34.Qh5+ > Kg7 35.Rxc6 >0:44 1/10 17.70 5488076 26.Be6 Rxe6 27.Nxe6 fxe6 28.Rxg6+ > hxg6 29.Qxg6+ Kh8 30.Rg1 Qc1+ 31.Rxc1 > Rg8 32.Qxf6+ Kh7 33.Qh4+ Kg7 34.Rg1+ > Kf7 35.Qh7+ Kf6 36.Rxg8 >1:26 1/11 18.69 10293422 26.Be6 Rxe6 27.Nxe6 fxe6 28.Rxg6+ > hxg6 29.Qxg6+ Kh8 30.Rg1 Qc1+ 31.Rxc1 > Rg8 32.Qxf6+ Kh7 33.Qh4+ Kg7 34.Rg1+ > Kf7 35.Qf4+ Ke7 36.Rxg8 e5 37.Qxe5+ > Kd7 >3:17 1/12 Mate15 26478549 26.Be6 Rxe6 27.Nxe6 fxe6 28.Rxg6+ > hxg6 29.Qxg6+ Kh8 30.Rg1 Qc1+ 31.Rxc1 > Rg8 32.Qxf6+ Kh7 33.Qh4+ Kg6 34.Rg1+ > Kf5 35.Qe4+ Kf6 36.Rxg8 Ke7 37.Qxb4+ > Kf6 38.Qf4+ Ke7 39.Qf8+ Kd7 40.Qd8# > >jm CM Grailmaster7 on my Athlon 2100+ need 1 minute 13 seconds to find the mate in 15 moves, hovever, after 1:40 he finds a mate in 14: Analysis by CM9000 Grailmaster7: 1. Be6 Rxe6 2. Nxe6 fxe6 3. Rxg6+ hxg6 4. Qxg6+ Kh8 5. Rg1 Qc1+ 6. Rxc1 Rg8 7. Qxf6+ Kh7 8. Qh4+ Kg6 9. Rg1+ Kf5 10. Qh5+ Kf6 11. Rxg8 Ke7 12. Qc5+ Kf6 13. Qg5+ Kf7 14. Qg7# Axel
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