Author: Heiner Marxen
Date: 09:37:18 07/11/01
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On July 11, 2001 at 11:47:09, Christoph Fieberg wrote: >Chess Tiger just shows that it is mate in 8! > >r2qk2r/8/8/qqqqqqqq/QQQQQQQQ/8/8/R2QK2R b - - 0 1 > >Analysis by Chess Tiger 14.0: > >1. -+ (-#8): 81...Ddxe4+ 82.Ddxe4 Daxb4+ 83.Kf1 Dxd1+ 84.Txd1 Dgxf4+ 85.Dgxf4 >Dfxf4+ 86.Dhxf4 Dxh1+ 87.Dxh1 Dxf4+ >2. -+ (-58.14): 81...Daxb4+ 82.Kf2 Ddxd4+ 83.Dcxd4 Ddxd4+ 84.Dexd4 Dexd4+ 85.Kg2 >Dhxg4+ 86.Ddxg4 Dgxg4+ 87.Dhg3 Dxg3+ >3. -+ (-35.92): 81...Dhxh4+ 82.Txh4 Dfxe4+ 83.Dfxe4 Dxh4+ 84.Dxh4 Dxh4+ 85.Kd2 >Dcxb4+ 86.Dcxb4 Ddxd4+ 87.Dexd4 Dhxd4+ > >(Fieberg, Bergisch Gladbach 11.07.2001) Yes, Chest agrees, this is a mate in 8. There are two solution moves: PV: Qdxe4+ Qdxe4 Qaxb4+ Qaxb4 Qxd1+ Qxd1 Qfxe4+ Qcxe4 Qe3+ Qexe3 Qxe3+ Qxe3+ Qxe3+ Qe2 Qhxe2# PV: Qaxb4+ Qaxb4 Qdxe4+ Qdxe4 Qxd1+ Qxd1 Qfxe4+ Qcxe4 Qe3+ Qexe3 Qxe3+ Qxe3+ Qxe3+ Qe2 Qhxe2# The PVs differ only in the first 4 plies. (K7/600 with 30 MB hash in 5.5 minutes) Regards, Heiner
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