Author: Dann Corbit
Date: 20:26:21 07/12/01
Go up one level in this thread
On July 12, 2001 at 22:33:51, odell hall wrote:
>Who says computers have the positional understanding of a 2100??? In the game
>Junior 7 finds the Novelty played by Anand 11...Be7!! at about 1 min at depth
>15 on my Thunderbird 1000, previous moves which has been played in this position
>are 11...nf6, bb7, h6. I tested a few other programs, (fritz, gambit tiger)
>they were unable to find the move. I am not 100% sure it is the best, but if
>Anand plays it, there has to definitely be something to it. Listening to the
>commentary I notice no one expected this move. How stupid can computers be to
>find a purely positional move that annand plays???
>
>
>Morozevich,A - Anand,V
[D]r1b1k2r/2qp1ppp/p3pn2/1p2n3/1b1BP3/1NN2P2/PPPQ2PP/2KR1B1R b kq - 0 1
>
>Analysis by Junior 7:
>
>11...h5 12.Qg5
> ² (0.36) Depth: 3 00:00:00
>11...Nc6 12.Bxf6 gxf6 13.Qh6 Bxc3
> = (0.21) Depth: 6 00:00:00 3kN
>11...Nc6 12.Bxf6 gxf6 13.Qh6 Bxc3
> = (0.21) Depth: 6 00:00:00 3kN
>11...Nc6 12.Bxf6 gxf6 13.Qh6 Bxc3
> = (0.21) Depth: 6 00:00:00 3kN
>11...Nc6 12.Bxf6 gxf6 13.Qh6 Bxc3 14.bxc3 Bb7
> ± (0.74) Depth: 9 00:00:00 56kN
>11...h6 12.a3 Be7 13.f4 Nc4 14.Qf2 Bb7
> = (0.17) Depth: 9 00:00:00 88kN
>11...h6 12.a3 Bd6 13.Be3 Be7 14.Bf4 b4 15.axb4 Bxb4 16.Be2
> = (0.16) Depth: 12 00:00:01 698kN
>11...0-0 12.a3 Bd6 13.Be3 Be7 14.Bf4 b4 15.axb4 Bxb4 16.Be2 Bxc3
> = (0.08) Depth: 12 00:00:04 2991kN
>11...0-0 12.a3 Bd6 13.Bxb5 Bb7 14.Bf2 Bxa3 15.bxa3 Rfc8 16.Bc5 axb5 17.Nxb5 Qb8
> ² (0.39) Depth: 15 00:00:17 12443kN
>11...h6 12.a3 Bd6 13.Bb6 Qxb6 14.Qxd6 Qxd6 15.Rxd6 Ke7 16.Rd1 Nc6 17.Be2
> = (0.16) Depth: 15 00:00:24 17059kN
>11...Be7 12.Qf2 b4 13.Na4 d6 14.Nb6 Rb8 15.Nxc8 Qxc8 16.Be3 d5
> = (0.02) Depth: 15 00:01:05 46644kN
Look at the score, it is 0.02. Not exactly a ringing endorsement...
>(hall, denver 12.07.2001)
Here's crafty's take:
EPD Kit revision date: 1996.04.21
unable to open book file [e:\crafty\release/books.bin].
hash table memory = 192M bytes.
pawn hash table memory = 80M bytes.
EGTB cache memory = 32M bytes.
draw score set to 0.00 pawns.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
5 piece tablebase files found
19045kb of RAM used for TB indices and decompression tables
Crafty v18.10
White(1): st 999
search time set to 999.00.
White(1): setboard r1b1k2r/2qp1ppp/p3pn2/1p2n3/1b1BP3/1NN2P2/PPPQ2PP/2KR1B1R b
kq - 0 1
Black(1):
puzzling over a move to ponder.
clearing hash tables
nss depth time score variation (1)
Black(1): O-O [pondering]
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
go
Black(1): go
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
6-> 0.37 0.61 1. ... O-O 2. a3 Be7 3. Qg5 Nc4 4.
Kb1
7 0.59 0.62 1. ... O-O 2. Qg5 d6 3. a3 h6 4. Qe3
Bxc3 5. Qxc3
7-> 0.92 0.62 1. ... O-O 2. Qg5 d6 3. a3 h6 4. Qe3
Bxc3 5. Qxc3
8 1.41 0.63 1. ... O-O 2. Qg5 Bd6 3. Kb1 b4 4.
Na4 Bb7 5. Nac5
8-> 2.50 0.63 1. ... O-O 2. Qg5 Bd6 3. Kb1 b4 4.
Na4 Bb7 5. Nac5
9 3.49 0.66 1. ... O-O 2. Qg5 Bd6 3. Kb1 h6 4.
Qe3 Bb7 5. f4 Nfg4
9-> 5.42 0.66 1. ... O-O 2. Qg5 Bd6 3. Kb1 h6 4.
Qe3 Bb7 5. f4 Nfg4
10 9.56 0.71 1. ... O-O 2. Qg5 d6 3. a3 Bxc3 4.
Bxc3 h6 5. Qf4 Bb7 6. Ba5 Qc6
10 44.82 0.67 1. ... Ng6 2. Qe3 O-O 3. e5 Nh5 4.
a3 Be7 5. Qe4 Bg5+ 6. Kb1 Bb7
10-> 50.94 0.67 1. ... Ng6 2. Qe3 O-O 3. e5 Nh5 4.
a3 Be7 5. Qe4 Bg5+ 6. Kb1 Bb7
11 1:10 0.81 1. ... Ng6 2. Qe3 Bb7 3. a3 Bd6 4.
g3 Be5 5. Bxe5 Nxe5 6. f4 Nc4 7. Qd4
11 2:01 0.73 1. ... Be7 2. Qf2 Ng6 3. Bb6 Qe5 4.
g3 b4 5. Bd4 Qb8 6. Na4 Qc7
11 2:11 0.67 1. ... O-O 2. Qg5 Bd6 3. Kb1 b4 4.
Na4 h6 5. Qe3 Re8 6. f4 Nfg4
11-> 2:21 0.67 1. ... O-O 2. Qg5 Bd6 3. Kb1 b4 4.
Na4 h6 5. Qe3 Re8 6. f4 Nfg4
12 2:42 0.71 1. ... O-O 2. Qg5 Bd6 3. Kb1 h6 4.
Qe3 Nc4 5. Qf2 e5 6. Bxc4 exd4 7. Bd5
12 4:31 0.66 1. ... Be7 2. f4 Nc4 3. Bxc4 bxc4 4.
Na1 O-O 5. Be5 Qc5 6. Bd6 Bxd6 7. Qxd6
Qe3+ 8. Qd2 Ng4
12-> 5:49 0.66 1. ... Be7 2. f4 Nc4 3. Bxc4 bxc4 4.
Na1 O-O 5. Be5 Qc5 6. Bd6 Bxd6 7. Qxd6
Qe3+ 8. Qd2 Ng4
13 6:00 1/45* 1. ... Be7
Do the scores or trajectories show that either of these programs has GM
positional understanding?
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