Author: Kai Skibbe
Date: 08:43:34 04/02/02
Go up one level in this thread
On April 01, 2002 at 17:51:15, Ed Schröder wrote: >[d]8/7N/1k2pp2/3P4/8/8/2r5/5K1R w - - 0 1 > >Solution: > >1. dxe6 Rc1+ 2. Kf2 Rxh1 3. e7 Rh2+ 4. Kf3 Rh3+ 5. Kf4 Rh4+ 6. Kf5 Rh5+ >7. Kxf6 Rh6+ 8. Kf5 Rh5+ 9. Kf4 Rh4+ 10. Kf3 Rh3+ 11. Ke2 Rh2+ 12. Kd3 >Rh3+ 13. Kd4 Rh4+ 14. Kd5 Rh5+ 15. Kd6 Rh6+ 16. Nf6 Rxf6+ 17. Kd5 Rf5+ >18. Kd4 Rf4+ 19. Ke3 Rf1 20. Ke2 1-0 > >1.dxe6 is easy, I assume every chess program will find it instantly. > >Difficult to find is 2.Kf2!! > >And that's the hard challenge for your favorite engine. > Isn´t hard for Gromit 3.11.2 on Celeron400Mhz 78MB Hash und 4men tb´s 1.dxe6 Tc1+ 2.Kf2 Txh1 3.e7 Th2+ 4.Ke3 Th3+ 5.Kf4 Th4+ 6.Kf5 Th5+ 7.Kxf6 +- (4.30) Tiefe: 5/17 00:00:00 31kN, tb=87 1.dxe6 Tc1+ 2.Kg2 Txh1 3.Kxh1 Kc6 +- (4.32) Tiefe: 6/17 00:00:01 72kN, tb=263 1.dxe6 Tc1+ 2.Kf2 Txh1 3.e7 Th2+ 4.Kf3 Th3+ 5.Kf4 Th4+ 6.Kf5 Th5+ 7.Kxf6 Th6+ 8.Ke5 +- (4.49) Tiefe: 7/19 00:00:04 191kN, tb=959 1.dxe6 Tc1+ 2.Kf2 Txh1 3.e7 Th2+ 4.Kf3 Th3+ 5.Kf4 Th4+ 6.Kf5 Th5+ 7.Kxf6 Th6+ 8.Ke5 Th5+ 9.Kd4 Th4+ 10.Kd5 +- (4.60) Tiefe: 8/21 00:00:09 472kN, tb=3037 1.dxe6 Tc1+ 2.Kf2 Txh1 3.e7 Th2+ 4.Kf3 Th3+ 5.Kf4 Th4+ 6.Kf5 Th5+ 7.Kxf6 Th6+ 8.Kf5 Th5+ 9.Kf4 Th4+ 10.Ke3 Th3+ 11.Kd4 Th4+ +- (4.60) Tiefe: 9/25 00:00:19 1073kN, tb=9527 1.dxe6 Tc1+ 2.Kf2 Txh1 3.e7 Th2+ 4.Kf3 Th3+ 5.Kf4 Th4+ 6.Kf5 Th5+ 7.Kxf6 Th6+ 8.Kf5 Th5+ 9.Kf4 Th4+ 10.Kf3 Th3+ 11.Ke2 Th2+ 12.Kd3 Th3+ +- (4.60) Tiefe: 10/28 00:00:35 2287kN, tb=33745 1.dxe6 Tc1+ 2.Kf2 Txh1 3.e7 Th2+ 4.Kf3 Th3+ 5.Kf4 Th4+ 6.Kf5 Th5+ 7.Kxf6 Th6+ 8.Kf5 Th5+ 9.Kf4 Th4+ 10.Kf3 Th3+ 11.Ke2 Th2+ 12.Kd3 Th3+ 13.Kd4 +- (4.60) Tiefe: 11/37 00:01:08 5199kN, tb=76880 Kai
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