Author: Bernhard Bauer
Date: 05:01:16 07/03/00
Go up one level in this thread
On July 02, 2000 at 12:48:04, Côme wrote:
>
>Hello in this position of a game Leotard-Rufenacht does your chess program
>find the winning move Bc4! .
>
>[D]8/p3k1p1/1p4p1/5p2/3Pp2P/1BK1P3/P4PP1/5b2 w - -
>
>Best Regards
>Alexandre Côme
My modified Crafty finds 1. Bc4 in 26 sec. This version doesn't do a null move
search for the first 7 plies if the side to move has only a rook or less
material.
12-> 9.64 0.09 1. g3 Bb5 2. a4 Bd7 3. Kb4 Bc8 4. Bd5
Ba6 5. f4 exf3 6. Bxf3 Bd3 7. d5
13 19.63 0.10 1. g3 Bb5 2. a4 Be2 3. Bc4 Bd1 4. Bb5
a6 5. Bxa6 Bxa4 6. Kd2 Kd6 7. Bc4
13 25.88 0.24 1. Bc4 Bxg2 2. Kb4 f4 3. exf4 Bh3 4.
Kb5 Bc8 5. Kc6 Bd7+ 6. Kb7 b5 7. Bd5
a5 8. Bxe4
(2) 13-> 25.89 0.24 1. Bc4 Bxg2 2. Kb4 f4 3. exf4 Bh3 4.
Kb5 Bc8 5. Kc6 Bd7+ 6. Kb7 b5 7. Bd5
a5 8. Bxe4
14 31.64 0.28 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Bh3 6. d6 f4 7. exf4
Bd7 <HT>
14-> 32.88 0.28 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Bh3 6. d6 f4 7. exf4
Bd7 <HT>
15 39.71 0.31 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Bh3 6. d6 f4 7. exf4
Bc8+ 8. Kb5 Bd7+ 9. Kb4 Kb7
(2) 15-> 48.47 0.31 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Bh3 6. d6 f4 7. exf4
Bc8+ 8. Kb5 Bd7+ 9. Kb4 Kb7
16 1:05 0.50 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Bh3 6. d6 f4 7. exf4
Bc8+ 8. Kb5 Bd7+ 9. Kb4 a5+ 10. Kc3
Kb7
16-> 1:07 0.50 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Bh3 6. d6 f4 7. exf4
Bc8+ 8. Kb5 Bd7+ 9. Kb4 a5+ 10. Kc3
Kb7
17 1:43 0.59 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Kc7 6. Kxa7 Bf3 7. Ka6
Bd1 8. Kb5 Bf3 9. a4
(2) 17-> 3:18 0.59 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Kc7 6. Kxa7 Bf3 7. Ka6
Bd1 8. Kb5 Bf3 9. a4
18 4:15 0.60 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Kc7 6. Kxa7 Bh3 7. d6+
Kc6 8. d7 Kxd7 9. Kxb6 Bg4 10. Kc5
Bf3
(2) 18-> 6:32 0.60 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Kc7 6. Kxa7 Bh3 7. d6+
Kc6 8. d7 Kxd7 9. Kxb6 Bg4 10. Kc5
Bf3
19 8:34 0.49 1. Bc4 Bxg2 2. Kb4 Kd6 3. Kb5 Kc7 4.
Ka6 Kb8 5. d5 Bh3 6. d6 f4 7. exf4
Bf5 <HT>
time=10:00 cpu=204% mat=0 n=290997218 fh=10% nps=484785
ext-> checks=7258944 recaps=1312287 pawns=2250930 1rep=130827
thrt:167
predicted=0 nodes=290997218 evals=26886604
endgame tablebase-> probes done=0 successful=0
hashing-> trans/ref=37% pawn=13% used=99%
SMP-> split=2692 stop=245 data=10/64 cpu=20:24 elap=10:00
Kind regards
Bernhard
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