Author: Steven Edwards
Date: 14:47:11 04/06/05
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On April 06, 2005 at 11:07:09, Rob Basham wrote: >[D]2qrr1n1/3b1kp1/2pBpn1p/1p2PP2/p2P4/1BP5/P3Q1PP/4RRK1 w - - 0 1 > >In 1913, Dr. Alekhine announced "mate in 10" and played >Qh5+...! > >Ruffian 1.0.1 finds it in just 13 seconds and also ann. mate in 10...! The above position is BWTC.0031 (and additionally WCSAC.0398) and has appeared here before, and also in the computer chess literature from about three decades ago. I would not be surprised if a number of engines have been tuned for this position, consciously or otherwise. Paradise solves the above with a search tree containing only 109 nodes. One pathway: 1. Qh5+ Nxh5 2. fxe6+ Kg6 3. Bc2+ Kg5 4. Rf5+ Kg6 5. Rf6+ Kg5 6. Rg6+ Kh4 7. Re4+ Nf4 8. Rxf4+ Kh5 9. g3 Nf6 10. Rh4#
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