Author: Paul
Date: 17:02:12 01/18/01
Go up one level in this thread
On January 18, 2001 at 19:51:06, Pete Galati wrote: >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# Yeah, this was the line 'Pretz' found: 1... Nxg3+ 2. hxg3 Rxh5+ 3. Nxh5 Qh4+ 4. gxh4 Qxg2+ 5. Bxg2 Bxg2+ 6. Kh2 Ng4+ 7. Kg3 Qxe3+ 8. fxe3 Qf2+ 9. Kxg4 Qe6+ 10. Kg5 Qff5x If it's really a mate in 10 then the matesolvers will have a hard time proving that I guess. It's quite a beautiful mate I think. Paul
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