Author: Lyn Harper
Date: 02:10:09 10/17/03
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On October 17, 2003 at 05:08:37, Lyn Harper wrote: >[D] 2br1R1R/8/1Ppp1br1/3B1k1P/Q1NP1P2/1N4BP/2P5/2Kn4 w - - > > I got this one from the back pages of "Blackburne's Chess Games". > Interesting, because Blackburne himself claims a mate in 4. > This is his solution: > 1 Rh6 Rxh6 > 2 Nc5 cd > 3 Qe8 Any > 4 white mates accordingly (his words). > I have'nt gone over it to find out where Blackburne went wrong, but > this is what CM9K with ss=0 has to say. > > Lyn Time Depth Score Positions Moves ---- ---- ---- ---- ---- 0:00 3/3 23.93 4050 1.hxg6 Rxf8 2.Rxf8 cxd5 3.Nxd6+ Kxg6 4.Rxc8 0:00 3/3 25.04 34510 1.Qxc6 Rxg3 2.Nxd6+ Kxf4 3.Rxf6+ Kg5 4.Ne4+ Kh4 5.Rxd8 0:00 4/4 Mate09 90710 1.Qxc6 Rxg3 2.Rxf6+ Kxf6 3.Qc7 Rd7 4.Qxc8 Rgg7 5.Rf8+ Rgf7 6.Rxf7+ Rxf7 7.Qe6+ Kg7 8.Qxf7+ Kh6 9.Qg6# 0:01 5/5 Mate07 429957 1.Qxc6 Rxg3 2.Rxf6+ Kxf6 3.Rxd8 Be6 4.Qxd6 Rg8 5.Qxe6+ Kg7 6.Rxg8+ Kh7 7.Be4# 0:49 5/5 Mate06 1061070 1.Rh7 Be6 2.Bxe6+ Kxe6 3.Qxc6 Bg7 4.Qe4+ Kd7 5.Rf7+ Kc8 6.Qb7# 0:52 6/6 Mate06 1285730 1.Rh7 Be6 2.Bxe6+ Kxe6 3.Qxc6 Bg7 4.Qe4+ Kd7 5.Rf7+ Kc8 6.Qb7# 0:57 6/6 Mate05 2733438 1.Rh6 Bb7 2.Rxg6 cxd5 3.Rfxf6+ Ke4 4.Ncd2+ Ke3 5.Re6# 0:58 7/7 Mate05 2929638 1.Rh6 Bb7 2.Rxg6 cxd5 3.Rfxf6+ Ke4 4.Ncd2+ Ke3 5.Re6# 1:02 8/8 Mate05 4114710 1.Rh6 Bb7 2.Rxg6 cxd5 3.Rfxf6+ Ke4 4.Ncd2+ Ke3 5.Re6# 1:11 9/9 Mate05 6343708 1.Rh6 Bb7 2.Rxg6 cxd5 3.Rfxf6+ Ke4 4.Ncd2+ Ke3 5.Re6#
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