Author: Bruce Moreland
Date: 23:14:20 01/26/99
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On January 27, 1999 at 01:58:35, Jeremiah Penery wrote: >This probably isn't really worth anything, but it's still somewhat interesting. >It was a test run on Nolot position 2, Crafty and Bionic having the same >settings, and running at the same time on my PII-300 machine. >Here are the results: > >r4rk1/pp1n1p1p/1nqP2p1/2b1P1B1/4NQ2/1B3P2/PP2K2P/2R5 w - - bm Rxc5; >------------------------------------------------------------- >Crafty: > 4. Nxd7 Nxd7 5. Bxf7 Rxf7 6. Qxf7 Qxe5+ > 7. Kf1 > 9 5:17 ++ 1. Bf6!! > 9-> 5:37 -2.89 1. Bf6 > 10 9:30 ++ 1. Bf6!! > 10 14:05 -1.66 1. Bf6 Qb5+ 2. Ke1 Bb4+ 3. Kf2 Nc5 > 4. Nxc5 Bxc5+ 5. Kg3 h5 6. Qh6 h4+ > 7. Qxh4 Nd7 > 10-> 15:14 -1.66 1. Bf6 Qb5+ 2. Ke1 Bb4+ 3. Kf2 Nc5 > 4. Nxc5 Bxc5+ 5. Kg3 h5 6. Qh6 h4+ > 7. Qxh4 Nd7 > 11 37:19 ++ 1. Bf6!! > 11 80:51 -0.34 1. Bf6 Qb5+ 2. Ke1 Qb4+ 3. Rc3 Nd5 > 4. Qh6 N7xf6 5. exf6 Bf2+ 6. Ke2 Nf4+ > 7. Kxf2 Qb6+ 8. Kf1 Qb5+ 9. Bc4 Qf5 > 11-> 85:36 -0.34 1. Bf6 Qb5+ 2. Ke1 Qb4+ 3. Rc3 Nd5 > 4. Qh6 N7xf6 5. exf6 Bf2+ 6. Ke2 Nf4+ > 7. Kxf2 Qb6+ 8. Kf1 Qb5+ 9. Bc4 Qf5 > 12 189:38 0.00 1. Bf6 Qb5+ 2. Ke1 Qb4+ 3. Rc3 Nxf6 > 4. Nxf6+ Kg7 5. Nh5+ gxh5 6. Qg5+ Kh8 > 7. Qf6+ Kg8 8. Qg5+ Kh8 > 12-> 206:37 0.00 1. Bf6 Qb5+ 2. Ke1 Qb4+ 3. Rc3 Nxf6 > 4. Nxf6+ Kg7 5. Nh5+ gxh5 6. Qg5+ Kh8 > 7. Qf6+ Kg8 8. Qg5+ Kh8 > 13 217:30 1/47 1. Bf6 > > >------------------------------------------------------------- >Bionic: > > 9 3:09 fhigh 1. Rxc5!! > 9 3:12 -2.37 1. Rxc5 Nxc5 2. Nf6+ Kh8 3. Ng4 Qb5+ > 4. Ke3 h5 5. Bf6+ Kg8 6. Nh6+ Kh7 7. > Bxf7 Qxb2 > 9-> 3:20 -2.37 1. Rxc5 Nxc5 2. Nf6+ Kh8 3. Ng4 Qb5+ > 4. Ke3 h5 5. Bf6+ Kg8 6. Nh6+ Kh7 7. > Bxf7 Qxb2 >10 4:07 fhigh 1. Rxc5!! >10-> 6:01 -1.98 1. Rxc5 Nxc5 2. Nf6+ Kh8 3. Ng4 Qb5+ > 4. Ke3 h5 5. Bf6+ Kg8 6. Nh6+ Kh7 7. > Bxf7 Qxb2 >11 9:08 -1.64 1. Rxc5 Nxc5 2. Nf6+ Kh8 3. Qh4 Qb5+ > 4. Ke1 h5 5. Nxh5 Qb4+ 6. Qxb4 Nd3+ > 7. Ke2 Nxb4 8. Bf6+ Kg8 9. Ng3 >11-> 32:13 -1.64 1. Rxc5 Nxc5 2. Nf6+ Kh8 3. Qh4 Qb5+ > 4. Ke1 h5 5. Nxh5 Qb4+ 6. Qxb4 Nd3+ > 7. Ke2 Nxb4 8. Bf6+ Kg8 9. Ng3 >12 40:43 fhigh 1. Rxc5!! >12 187:57 0.00 1. Bf6 Qb5+ 2. Ke1 Bb4+ 3. Kf2 Nxf6 > 4. Nxf6+ Kg7 5. Nh5+ Kg8 6. Nf6+ >12-> 196:45 0.00 1. Bf6 Qb5+ 2. Ke1 Bb4+ 3. Kf2 Nxf6 > 4. Nxf6+ Kg7 5. Nh5+ Kg8 6. Nf6+ >13 218:00 1/47 1. Bf6 >--------------------------------------------------------- > >Interesting that Bionic picks the right move so early, but with such a low >score, and then changes it's decision to match what Crafty says, with almost >exactly the same time/depth by the end of it. > >Jeremiah This is a very hard position. What both of them are finding is a draw in ply 12. That's what programs will think of Bf6 eventually. I don't know if it is a draw or a win or a loss, but that's what they seem to see. 1. Rxc5 is hard to find. It wins. But Bionic is seeing 1. ... Nxc5 in response, which gets crushed. Because both think the score is negative, they're going for the 1. Bf6 draw. bruce
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