Author: Richard A. Fowell
Date: 23:58:45 01/08/05
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Summary ( On Macintosh G4 867 Mhz, times approximate - I stopped analysis by hand once mate in 9 showed ) Note that all engines showed the same continuation until the 8th move, and that all engines took less time to solve position #2 vs. position #1. Time to call Mate in 9 (in seconds) Engine Version POS#1 POS#2 ---------------------- Fruit 2.0 1 0 Glaurung 0.1.5 11 6 Gothmog 1 b12 12 2 MacChess 5.01 10 6 Ruffian 2.1.0 11 4 Sigma 6.1 34 8 Details Position #1 1b3rk1/pp4pp/2p3n1/1P1p4/P2P2q1/R4NPb/3NBK2/3QR3 b - - Fruit 2.0 +mate 9 5/1 0:01 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Bf1 Rh5 8. Bh3 Rxh3 9. Nh2 Rxh2 Glaurung 0.1.5 +mate 9 9/2 0:11 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Bf1 Rh5 8. Bh3 Rxh3 9. Nh2 Qxh2 Gothmog 1 b12 +mate 9 8/1 0:12 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Bf1 Rh5 8. Bh3 Rxh3 9. Nh2 Rxh2 MacChess 5.01 +mate 9 8/1 0:10 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Nf1 Rh5 8. Nh4 Rxh4 9. Nh2 Rxh2 Ruffian 2.1.0 +mate 9 9/2 0:11 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Nf1 Rh5 8. N1h2 Rxh2 9. Nxh2 Qxh2 Sigma 6.1 +mate 9 6/2 0:34 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Nf1 Rh5 8. N1h2 Rxh2 9. Nxh2 Qxh2 Position #2 1b3rk1/pp4pp/2p3n1/1Pqp4/P2P4/R4NPb/3NBK2/3QR3 b - - Fruit 2.0 +mate 9 5/1 0:00 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Bf1 Rh5 8. Bh3 Rxh3 9. Nh2 Rxh2 Glaurung 0.1.5 +mate 9 9/4 0:06 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Bf1 Rh5 8. Bh3 Rxh3 9. Nh2 Qxh2 Gothmog 1 b12 +mate 9 8/1 0:02 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Bf1 Rh5 8. Bh3 Rxh3 9. Nh2 Rxh2 MacChess 5.01 +mate 9 8/1 0:06 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Nf1 Rh5 8. Nh4 Rxh4 9. Nh2 Rxh2 Ruffian 2.1.0 +mate 9 9/22 0:04 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Nf1 Rh5 8. N1h2 Rxh2 9. Nxh2 Qxh2 Sigma 6.1 +mate 9 6/3 0:08 1... Qxd4 2. Re3 Bxg3 3. Kg1 Qxe3 4. Kh1 Bg2 5. Kxg2 Qf2 6. Kh1 Rf5 7. Nf1 Rh5 8. N1h2 Rxh2 9. Nxh2 Qxh2
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