Author: Hans Havermann
Date: 14:27:58 09/03/00
Go up one level in this thread
Combination: human facilitator; (400 MHz iMac) Sigma Chess, MacChess... On September 02, 2000 at 17:08:20, leonid wrote: > 1r2k2r/1b3pbp/1NPqN1n1/1P1Q4/1P2P3/P3B3/5PP1/R3KB1R White to go. It took Sigma Chess 5.0's mate solver 7 minutes, 31 seconds to determine there is no M5. Knowing that, the M6 found by MacChess 5.0.1 in 3 seconds suffices: 1. Qxd6 Bc3+ 2. Ke2 fxe6 3. Qd7+ Kf8 4. Bh6+ Bg7 5. Qxg7+ Ke8 6. Qd7++. Total machine time: 7 minutes, 34 seconds. > 6KQ/3B2Q1/QQQQQQQ1/5Nbn/qqqqq1q1/5qqk/8/8 White to go. MacChess finds a M8 in 11 minutes, 32 seconds: 1. Qgxh5+ Qxh5 2. Qxg3+ Qxg3 3. Nxd4+ Qexe6+ 4. Bxe6+ Qxe6+ 5. Qfxe6+ Kh2 6. Qxh5+ Qh3 7. Qhxh3+ Kg1 8. Qaf1++. I'm running the M7 mate solve in Sigma Chess but my guess is that it will take days. :(
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