Author: Bernhard Bauer
Date: 03:59:10 02/02/00
Go up one level in this thread
On February 01, 2000 at 22:44:47, Dann Corbit wrote:
>Here is the crafty log for the position in question.
>
> clearing hash tables
> time surplus 0.00 time limit 83:20 (83:20)
> nss depth time score variation (1)
>White(1): exit
>
> 6-> 0.76 0.74 1. O-O a6 2. Bd3 Qf6 3. Be4 Nc5
> 7 1.21 1.04 1. O-O a6 2. Be2 Bd6 3. Rd1 Qc7 4.
> Qh4
> 7-> 1.38 1.04 1. O-O a6 2. Be2 Bd6 3. Rd1 Qc7 4.
> Qh4
> 8 2.01 0.74 1. O-O a6 2. Bd3 Nc5 3. Qc2 Nxd3 4.
> Qxd3 Ne5 5. Qe4
> 8-> 6.70 0.74 1. O-O a6 2. Bd3 Nc5 3. Qc2 Nxd3 4.
> Qxd3 Ne5 5. Qe4
> 9 8.47 0.64 1. O-O a6 2. Bd3 Nc5 3. Qc2 Nxd3 4.
> Qxd3 Ne5 5. Qe4 Qf6
> 9-> 20.61 0.64 1. O-O a6 2. Bd3 Nc5 3. Qc2 Nxd3 4.
> Qxd3 Ne5 5. Qe4 Qf6
> 10 25.41 0.61 1. O-O a6 2. Bd3 Bd6 3. Rd1 Nc5 4.
> Qg4 Ne5 5. Qxg7 Nxf3+ 6. Kh1
> 10-> 54.27 0.61 1. O-O a6 2. Bd3 Bd6 3. Rd1 Nc5 4.
> Qg4 Ne5 5. Qxg7 Nxf3+ 6. Kh1
> 11 1:13 0.30 1. O-O a6 2. Bxd7+ Qxd7 3. Qxd7+ Kxd7
> 4. Be3 Ke8 5. Rad1 Rc8 6. Rd3 Nc5 7.
> Bxc5 Bxc5 8. Re1+ Be7 9. Nd5
> 11 3:08 0.35 1. Bg5 Nc5 2. Bxd7+ Qxd7 3. Qxd7+ Nxd7
> 4. O-O f6 5. Bf4 g5 6. Rfe1+ Kd8 7.
> Bd2 Ne5 8. Re3 Kc7
> 11 4:43 0.73 1. Qe4 a6 2. Ba4 b5 3. Bc2 Be7 4. O-O
> Ndc5 5. Qc6+ Kf8 6. Re1 Rc8
> 11-> 5:19 0.73 1. Qe4 a6 2. Ba4 b5 3. Bc2 Be7 4. O-O
> Ndc5 5. Qc6+ Kf8 6. Re1 Rc8
> 12 5:52 -- 1. Qe4
> 12 7:34 0.21 1. Qe4 a6 2. Ba4 b5 3. Bb3 Rc8 4. O-O
> Nc5 5. Qe2 Bd6 6. Bxe6 fxe6 7. Rd1
> 12 12:10 0.44 1. Bg5 Nc5 2. Bxd8 Nxa4 3. Bxa4 Rxd8
> 4. O-O Be7 5. Rfe1 Kf8 6. Rad1 Nc5
> 12-> 17:23 0.44 1. Bg5 Nc5 2. Bxd8 Nxa4 3. Bxa4 Rxd8
> 4. O-O Be7 5. Rfe1 Kf8 6. Rad1 Nc5
> 13 21:46 0.76 1. Bg5 Nc5 2. Bxd8 Nxa4 3. Bxa4 Rxd8
> 4. O-O Be7 5. Rad1 Rg8 6. Rfe1 Rf8
> 7. Nd5
>
>Now that I see the response sequence listed, I am not completely sure that Bg5
>is optimal. I would like to see what happens clear out to 16 ply, but I am too
>lazy to run it myself.
Here some more lines from Crafty17.7 with modified extentions.
ext/onerep=0.2
ext/incheck=0.4
ext/recapture=0.2
ext/pushpp=0.4
ext/threat=0.2
ext/singular=0.2
6-> 0.23 1.02 1. O-O a6 2. Bxd7+ Qxd7 3. Qe4 Rd8
4. Re1
7 0.39 1.04 1. O-O a6 2. Be2 Nc5 3. Qg4 Ne5 4.
Qf5
7-> 0.45 1.04 1. O-O a6 2. Be2 Nc5 3. Qg4 Ne5 4.
Qf5
8 0.72 0.82 1. O-O a6 2. Bd3 Bc5 3. Rd1 O-O 4.
Qe4 Re8 5. Qxh7+
(3) 8-> 1.55 0.82 1. O-O a6 2. Bd3 Bc5 3. Rd1 O-O 4.
Qe4 Re8 5. Qxh7+
(2) 9 2.44 0.74 1. O-O a6 2. Bd3 Nc5 3. Qc2 Nxd3 4.
Qxd3 Ne5 5. Qe4
(2) 9-> 5.81 0.74 1. O-O a6 2. Bd3 Nc5 3. Qc2 Nxd3 4.
Qxd3 Ne5 5. Qe4
10 6.75 0.64 1. O-O a6 2. Bd3 Nc5 3. Qc2 Nxd3 4.
Qxd3 Ne5 5. Qe4 Qf6
(4) 10-> 16.55 0.64 1. O-O a6 2. Bd3 Nc5 3. Qc2 Nxd3 4.
Qxd3 Ne5 5. Qe4 Qf6
(3) 11 23.87 0.53 1. O-O a6 2. Bd3 Bd6 3. Rd1 Nc5 4.
Qg4 Ne5 5. Qxg7 Nxf3+ 6. Kh1 Be5
11 1:00 0.73 1. Qe4 a6 2. Ba4 b5 3. Bc2 Be7 4. O-O
Ndc5 5. Qc6+ Kf8 6. Re1 Rc8
(2) 11-> 1:01 0.73 1. Qe4 a6 2. Ba4 b5 3. Bc2 Be7 4. O-O
Ndc5 5. Qc6+ Kf8 6. Re1 Rc8
12 1:08 -- 1. Qe4
12 1:14 0.33 1. Qe4 a6 2. Ba4 b5 3. Bb3 Be7 4. Bxe6
fxe6 5. Qxe6 b4 6. Nd5 Nc5
12 1:26 0.49 1. O-O a6 2. Bd3 Be7 3. Be3 O-O 4.
Qe4 Nf6 5. Qxb7 Qxd3 6. Qxe7 Rae8
(4) 12-> 2:22 0.49 1. O-O a6 2. Bd3 Be7 3. Be3 O-O 4.
Qe4 Nf6 5. Qxb7 Qxd3 6. Qxe7 Rae8
(3) 13 3:23 0.36 1. O-O a6 2. Bd3 Bd6 3. Rd1 Nc5 4.
Re1+ Be7 5. Qc2 Nxd3 6. Qxd3 O-O 7.
Qe4 Re8 8. Qxb7
13 5:00 0.46 1. Bg5 Qxg5 2. Bxd7+ Ke7 3. Qb4+ Kd8
4. Qe4 Qf4 5. Bb5 Qxe4+ 6. fxe4 Bb4
7. Rd1+ Ke7 8. Rd7+
(2) 13-> 6:05 0.46 1. Bg5 Qxg5 2. Bxd7+ Ke7 3. Qb4+ Kd8
4. Qe4 Qf4 5. Bb5 Qxe4+ 6. fxe4 Bb4
7. Rd1+ Ke7 8. Rd7+
14 7:32 0.57 1. Bg5 Qxg5 2. Bxd7+ Ke7 3. Qe4 Rb8
4. f4 Qg4 5. h3 Qh4 6. Rd1 h6 7. Bxe6
fxe6 8. Nd5+
14-> 10:44 0.57 1. Bg5 Qxg5 2. Bxd7+ Ke7 3. Qe4 Rb8
4. f4 Qg4 5. h3 Qh4 6. Rd1 h6 7. Bxe6
fxe6 8. Nd5+
15 16:59 0.81 1. Bg5 Nc5 2. Bxd8 Nxa4 3. Bxa4 Rxd8
4. O-O Be7 5. Rad1 h5 6. Rd4 a6 7.
Re1 b5 8. Nd5
15-> 21:49 0.81 1. Bg5 Nc5 2. Bxd8 Nxa4 3. Bxa4 Rxd8
4. O-O Be7 5. Rad1 h5 6. Rd4 a6 7.
Re1 b5 8. Nd5
16 32:15 1.19 1. Bg5 Qxg5 2. Bxd7+ Ke7 3. Rd1 Nc5
4. Qd4 Kd8 5. Bg4+ Kc7 6. O-O h5 7.
h4 Qg6 8. Qe5+ Kc6 9. Qd5+ Kb6
16-> 36:26 1.19 1. Bg5 Qxg5 2. Bxd7+ Ke7 3. Rd1 Nc5
4. Qd4 Kd8 5. Bg4+ Kc7 6. O-O h5 7.
h4 Qg6 8. Qe5+ Kc6 9. Qd5+ Kb6
17 49:41 1.31 1. Bg5 Qxg5 2. Bxd7+ Ke7 3. Rd1 Qe5+
4. Kf1 Nc5 5. Qb4 Rd8 6. f4 Qh5 7.
Rd5 Qxd5 8. Nxd5+ Kxd7 9. Kg2 Ke8
17-> 59:23 1.31 1. Bg5 Qxg5 2. Bxd7+ Ke7 3. Rd1 Qe5+
4. Kf1 Nc5 5. Qb4 Rd8 6. f4 Qh5 7.
Rd5 Qxd5 8. Nxd5+ Kxd7 9. Kg2 Ke8
time=60:00 cpu=200% mat=0 n=1517440416 fh=31% nps=421438
ext-> checks=75384113 recaps=4618196 pawns=30582 1rep=1959001
thrt:126361
predicted=0 nodes=1517440416 evals=371017237
endgame tablebase-> probes done=0 successful=0
hashing-> trans/ref=3% pawn=0% used=99%
SMP-> split=1533 stop=274 data=9/64 cpu=120:03 elap=60:00
The score is still low. If you run Crafty after 1.Bg5 Nc5 you get a much higher
score.
Kind regards
Bernhard
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