Author: Robert Hyatt
Date: 08:43:01 05/11/04
Go up one level in this thread
On May 11, 2004 at 08:10:02, Jarkko Pesonen wrote: >[D]r1b1kb1r/pp1n1ppp/2q5/2p3B1/Q1B5/2p2N2/PP3PPP/R3K2R w KQkq - > >solution: O-O-O > >Can Bob explain why this seem difficult for crafty? > >Is it because of > > if (WhiteCastle (1)) > score += EvaluateDevelopmentW (tree, ply); > if (BlackCastle (1)) > score += EvaluateDevelopmentB (tree, ply); > >Crafty finds the solution in ply 11 if these are commented out. > Probably. It is castling to an unsafe wing when the other wing looks OK... > >White(1): r1b1kb1r/pp1n1ppp/2q5/2p3B1/Q1B5/2p2N2/PP3PPP/R3K2R w KQkq - >analyze.White(1): clearing hash tables > time surplus 0.00 time limit 30.00 (3:30) > depth time score variation (1) > 6 0.21 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 6-> 0.30 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 7 0.61 -1 1. Bxf7+ > 7 0.68 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ <HT> > 7-> 1.02 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ <HT> > 8 2.47 -0.30 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Ne5 > 4. Nxe5 Qe6 5. Rd1 Bd6 6. Nc4 Qxe3+ > 7. Bxe3 Bc7 8. bxc3 > 8-> 3.98 -0.30 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Ne5 > 4. Nxe5 Qe6 5. Rd1 Bd6 6. Nc4 Qxe3+ > 7. Bxe3 Bc7 8. bxc3 > 9 5.79 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 9-> 9.47 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 10 16.81 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 10-> 27.05 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 11 52.36 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 11-> 1:28 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 12 3:07 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 12-> 7:20 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 13 14:58 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ > 13-> 25:28 0.01 1. Bxf7+ Kxf7 2. Qf4+ Ke8 3. Qe3+ Kf7 > 4. Qf4+ >O-O-O 14 29:45 1/51? 1. Bxf7+ >White(1): O-O-O >analyze.White(1): White(1): O-O-O > clearing hash tables > time surplus 0.00 time limit 30.00 (3:30) > depth time score variation (1) > 6 0.27 -0.45 1. ... cxb2+ 2. Kxb2 f6 3. Qxc6 bxc6 > 4. Rhe1+ Be7 5. Bf4 Nb6 6. Bd3 > 6-> 0.33 -0.45 1. ... cxb2+ 2. Kxb2 f6 3. Qxc6 bxc6 > 4. Rhe1+ Be7 5. Bf4 Nb6 6. Bd3 > 7 0.70 -0.58 1. ... cxb2+ 2. Kb1 f6 3. Rhe1+ Be7 > 4. Bb5 Qc7 5. Bf4 Qd8 6. Kxb2 > 7 0.98 -0.59 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Rhe1 f6 5. Bf4 Nb6 6. Be6 Bxe6 <HT> > 7-> 1.02 -0.59 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Rhe1 f6 5. Bf4 Nb6 6. Be6 Bxe6 <HT> > 8 1.50 -0.59 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Rhe1 f6 5. Bf4 Nb6 6. Be6 Bxe6 <HT> > 8-> 1.77 -0.59 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Rhe1 f6 5. Bf4 Nb6 6. Be6 Bxe6 <HT> > 9 3.39 -0.26 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Bxe7 Rb8+ 5. Kc3 Kxe7 6. Rhe1+ Kf8 > 7. Ne5 Nxe5 8. Rxe5 > 9-> 4.77 -0.26 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Bxe7 Rb8+ 5. Kc3 Kxe7 6. Rhe1+ Kf8 > 7. Ne5 Nxe5 8. Rxe5 > 10 5.00 -1 1. ... Be7 > 10 13.78 0.49 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Bxe7 Kxe7 5. Rhe1+ Kf8 6. Ne5 Rb8+ > 7. Ka1 Rb7 8. Nxf7 Rg8 > 10-> 19.27 0.49 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Bxe7 Kxe7 5. Rhe1+ Kf8 6. Ne5 Rb8+ > 7. Ka1 Rb7 8. Nxf7 Rg8 > 11 30.16 0.51 1. ... Be7 2. Qxc6 cxb2+ 3. Kxb2 bxc6 > 4. Bxe7 Rb8+ 5. Ka1 Kxe7 6. Rhe1+ Kd8 > 7. Ne5 Kc7 8. Nxf7 Rf8 >Be7 11 34.20 7/32? 1. ... Qc7 >Black(0): Be7 >analyze.Black(1): Black(1): Be7 > clearing hash tables > time surplus 0.00 time limit 30.00 (3:30) > depth time score variation (1) > 6 0.13 -0.48 2. Qxc6 bxc6 3. bxc3 Bxg5+ 4. Nxg5 > O-O 5. Rhe1 h6 6. Ne4 > 6-> 0.25 -0.48 2. Qxc6 bxc6 3. bxc3 Bxg5+ 4. Nxg5 > O-O 5. Rhe1 h6 6. Ne4 > 7 0.36 -0.46 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Kc3 Kxe7 6. Rhe1+ Kf8 7. Ne5 > Nxe5 8. Rxe5 > 7-> 0.68 -0.46 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Kc3 Kxe7 6. Rhe1+ Kf8 7. Ne5 > Nxe5 8. Rxe5 > 8 0.79 +1 2. Qxc6!! > 8 0.91 0.02 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Ka1 Kxe7 6. Rhe1+ Kf6 7. Rd6+ > Kf5 8. Re7 Rd8 9. Bxf7 > 8-> 1.54 0.02 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Ka1 Kxe7 6. Rhe1+ Kf6 7. Rd6+ > Kf5 8. Re7 Rd8 9. Bxf7 > 9 4.72 0.29 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Ka1 Kxe7 6. Rhe1+ Kf8 7. Ne5 > Rb7 8. Nxf7 Rg8 > 9-> 6.73 0.29 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Ka1 Kxe7 6. Rhe1+ Kf8 7. Ne5 > Rb7 8. Nxf7 Rg8 > 10 7.53 0.35 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Ka1 Kxe7 6. Rhe1+ Kf8 7. Ne5 > Nxe5 8. Rd8+ Ke7 9. Rxh8 Kd6 > 10-> 15.93 0.35 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Ka1 Kxe7 6. Rhe1+ Kf8 7. Ne5 > Nxe5 8. Rd8+ Ke7 9. Rxh8 Kd6 > 11 18.34 0.62 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Kc3 Kxe7 6. Rhe1+ Kd8 7. Ne5 > Kc7 8. Nxf7 Rf8 9. Re7 h6 > 11-> 58.51 0.62 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Rb8+ 5. Kc3 Kxe7 6. Rhe1+ Kd8 7. Ne5 > Kc7 8. Nxf7 Rf8 9. Re7 h6 > 12 1:04 0.71 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Kxe7 5. Rhe1+ Kf8 6. Ne5 Nxe5 7. Rd8+ > Ke7 8. Rxh8 Kf6 9. Ba6 Bb7 10. Rxa8 > Bxa8 > 13 6:32 0.80 2. Qxc6 bxc6 3. Bxe7 cxb2+ 4. Kxb2 > Kxe7 5. Rhe1+ Kf8 6. Ne5 Nxe5 7. Rd8+ > Ke7 8. Rxh8 Kf6 9. Be2 Rb8+ 10. Kc3 > Kg6 11. Bh5+ Kxh5 12. Rxe5+ > >Jarkko
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.