Author: Pete Galati
Date: 16:51:06 01/18/01
Go up one level in this thread
On January 18, 2001 at 19:13:22, Paul wrote: >On January 18, 2001 at 19:01:08, Pete Galati wrote: > >>On January 18, 2001 at 18:44:05, leonid wrote: >> >>>Hi! >>> >>>If you would like to find a mate here is one position. It is very easy to solve >>>but not that simple to find shortest mate. >>> >>>I failed here even in 3 hours to find shortest mate through brute force search. >>>Maybe you will have better chance. >>> >>> 1k4q1/1pppPr2/PbbP1N1n/QP2rn1R/1q6/1q2RBB1/q1q2PPP/6NK black to go >>> >>>Leonid. >> >>Is this the right position? >> >>[D]1k4q1/1pppPr2/PbbP1N1n/QP2rn1R/1q6/1q2RBB1/q1q2PPP/6NK b - - 0 1 > >If so, then mine says it's a mate in 10 for black starting with Nxg3+ ... >It looks like a daily reverse auction ... Anyone lower, anyone? :) > >Paul Crafty seems to say the same thing. I haven't run these moves passed a board to check to see if it really IS a forced mate, but I assume it is since Black keeps white in check the whole time. Just over 3 minutes. 48mb hashtable fwiw. Pete 8 3:13 -Mat10 1. ... Nxg3+ 2. hxg3 Rxh5+ 3. Nxh5 Qh4+ 4. gxh4 Qxg2+ 5. Bxg2 Bxg2+ 6. Kh2 Ng4+ 7. Kg3 Qxf2+ 8. Kxg4 Bh3+ 9. Nxh3 Qf5+ 10. Kg3 Qxe3# 8-> 3:40 -Mat10 1. ... Nxg3+ 2. hxg3 Rxh5+ 3. Nxh5 Qh4+ 4. gxh4 Qxg2+ 5. Bxg2 Bxg2+ 6. Kh2 Ng4+ 7. Kg3 Qxf2+ 8. Kxg4 Bh3+ 9. Nxh3 Qf5+ 10. Kg3 Qxe3# 9 5:45 -Mat10 1. ... Nxg3+ 2. hxg3 Rxh5+ 3. Nxh5 Qh4+ 4. gxh4 Qxg2+ 5. Bxg2 Bxg2+ 6. Kh2 Ng4+ 7. Kg3 Qxf2+ 8. Kxg4 Bh3+ 9. Nxh3 Qf5+ 10. Kg3 Qxe3# 9-> 17:39 -Mat10 1. ... Nxg3+ 2. hxg3 Rxh5+ 3. Nxh5 Qh4+ 4. gxh4 Qxg2+ 5. Bxg2 Bxg2+ 6. Kh2 Ng4+ 7. Kg3 Qxf2+ 8. Kxg4 Bh3+ 9. Nxh3 Qf5+ 10. Kg3 Qxe3#
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