Author: Paul
Date: 15:47:26 05/07/01
Go up one level in this thread
On May 07, 2001 at 18:21:08, Paul Byrne wrote: >On May 07, 2001 at 17:48:03, Paul wrote: > >>On May 07, 2001 at 16:23:20, leonid wrote: >> >>>Hello! >>> >>>And how about solving mate in two variations? We will start with female side. >>>Contain more esthetic and demand very gentle approach. >>> >>>[D]Qn1q1nQ1/1QNbNQ2/1qqkqq2/1QrqrQ2/1q1N1q2/3q4/B1RbR1B1/B2K2B1 w - - >> >>Hullo! >> >>Mate in 8 in half a minute ... >> >>00:27 WM8 06 Ne8+ Qxe8 Nc8+ Qexc8 Qgxf8+ Qfe7 Q7xe6+ Rxe6 Rxe6+ Qxe6 Qxe6+ Bxe6 >>Qbxe7+ Ke5 Nxc6# > >G2K says: >1W. i=9769 n=301215 p=0 d=1000000000 t=4.780 >1W. Ne8 wins! > >You got me curious so I had G2K dump a complete solution tree this time and >picked out the longest line, which was: > >1. Ne8 Qxe8 2. Qaxb8 Qbc7 3. Nc8 Qxc8 4. Qgxf8 Qfe7 5. Q5xe6 Qxe6 6. Q5xc6 Bxc6 >7. Q8xc7 Qxc7 8. Qxe6 Rxe6 9. Rxe6 Kd7 10. Qfc8 > > >>>Second is almost the same position but contain slight genetical modification. It >>>expect from you more brute force in order to reach the same result. >>> >>>[D]Qn1q1nQ1/1QNbNQ2/1qqkqq2/1QrqrQ2/1q1N1q2/3q4/3b4/Q2K2Q1 w - - >> >>Mate in 11 in half an hour, don't know the exact time, as the job ran in the >>background, the solution looks a bit like the unlocking of a safe ... nice :): >> >>29:57 WM11 09 Ne8+ Qxe8 Nc8+ Qexc8 Qgxf8+ Qfe7 Q7xe7+ Qxe7 Qaxb8+ Qbc7 Qgg6+ Re6 >>Q8xc7+ Q8xc7 Qxc7+ Qxc7 Qaa6+ Bc6 Qgxe6+ Qxe6 Qxe6# > >Here I got > >1W. i=51133 n=1222688 p=0 d=1000000000 t=19.220 >1W. Nc8 wins! > >and > >1. Nc8 Qxc8 2. Ne8 Qcxe8 3. Qgxf8 Qfe7 4. Qaxb8 Qbc7 5. Q8xe7 Q8xe7 6. Qxe7 Qxe7 >7. Q7xc7 Qxc7 8. Qbxd7 Qxd7 9. Qbf8 Qe7 10. Qgg6 Re6 11. Qfxe6 Qxe6 12. Qxe6 > >-paul Paul, this is impressive stuff ... geezzz ... 19.2 seconds? ... ok, I quit! Paul (who'll be back :)
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