Author: Jarkko Pesonen
Date: 05:10:02 05/11/04
[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.
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
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