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Subject: Re: Interesting positions for computers in one of my games :-)

Author: Eelco de Groot

Date: 19:58:06 10/27/00

Go up one level in this thread


On October 27, 2000 at 20:56:26, Dann Corbit wrote:

>Crafty does choose the knight move, eventually:
>
>EPD Kit revision date: 1996.04.21
>found computer opening book file [./bookc.bin].
>hash table memory = 96M bytes.
>pawn hash table memory = 64M bytes.
>EGTB cache memory = 64M 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.
>6 piece tablebase files found
>20899kb of RAM used for TB indices and decompression tables
>
>Crafty v17.13
>
>White(1): st 3600
>search time set to 3600.00.
>White(1): epdpfga epd.epd epd.out
>PFGA: EPD record: 1
>              clearing hash tables
>              time surplus   0.00  time limit 60:00 (60:00)
>         nss  depth   time  score   variation (1)
>                5->   0.40  -0.94   1. Na4 Ng6 2. Qh5 Bb4+ 3. c3 Qd4 4.
>                                    Nxh7 Qxf4 5. Qxg6+
>                6     0.80  -1.21   1. Na4 Be7 2. Qe2 O-O 3. O-O-O Bb4
>                6     1.50  -1.13   1. Qh5+ g6 2. Qe2 Bd4 3. Bd2 h6 4.
>                                    Nf3
>                6->   2.23  -1.13   1. Qh5+ g6 2. Qe2 Bd4 3. Bd2 h6 4.
>                                    Nf3
>                7     4.96  -0.99   1. Qh5+ Ng6 2. O-O-O a6 3. Bxc6+ bxc6
>                                    4. Be3 d4 5. Na4 dxe3 6. Nxc5 exf2
>                                    7. Nxh7
>                7->   6.37  -0.99   1. Qh5+ Ng6 2. O-O-O a6 3. Bxc6+ bxc6
>                                    4. Be3 d4 5. Na4 dxe3 6. Nxc5 exf2
>                                    7. Nxh7
>                8    13.23  -1.07   1. Qh5+ Qg6 2. Qe2 O-O 3. O-O-O Ng4
>                                    4. Rhf1 Nd4 5. Qe1 Nxb5 6. Nxb5
>                8->  20.32  -1.07   1. Qh5+ Qg6 2. Qe2 O-O 3. O-O-O Ng4
>                                    4. Rhf1 Nd4 5. Qe1 Nxb5 6. Nxb5
>                9    36.23  -1.27   1. Qh5+ Qg6 2. Qe2 O-O 3. O-O-O Ng4
>                                    4. Rhf1 e5 5. Bd2 Qd6
>                9->   1:00  -1.27   1. Qh5+ Qg6 2. Qe2 O-O 3. O-O-O Ng4
>                                    4. Rhf1 e5 5. Bd2 Qd6
>               10     1:22  -1.23   1. Qh5+ g6 2. Qe2 O-O 3. O-O-O Ng4
>                                    4. Rhf1 Nd4 5. Qe1 Nxb5 6. Nxb5 Nxh2
>               10->   2:12  -1.23   1. Qh5+ g6 2. Qe2 O-O 3. O-O-O Ng4
>                                    4. Rhf1 Nd4 5. Qe1 Nxb5 6. Nxb5 Nxh2
>               11     3:00  -1.24   1. Qh5+ g6 2. Qe2 O-O 3. O-O-O a6 4.
>                                    Bxc6 Nxc6 5. Na4 Bb4 6. Nb6 Nd4 7.
>                                    Qe3
>               11->   4:49  -1.24   1. Qh5+ g6 2. Qe2 O-O 3. O-O-O a6 4.
>                                    Bxc6 Nxc6 5. Na4 Bb4 6. Nb6 Nd4 7.
>                                    Qe3
>               12     9:36  -1.38   1. Qh5+ Qg6 2. Qe2 O-O 3. O-O-O a6
>                                    4. Bxc6 Nxc6 5. Rhe1 Bb4 6. h4 d4 7.
>                                    h5 Qf6
>               12->  16:27  -1.38   1. Qh5+ Qg6 2. Qe2 O-O 3. O-O-O a6
>                                    4. Bxc6 Nxc6 5. Rhe1 Bb4 6. h4 d4 7.
>                                    h5 Qf6
>               13    22:30  -1.43   1. Qh5+ Qg6 2. Qxg6+ Nxg6 3. Be3 d4
>                                    4. Na4 Bb4+ 5. Bd2 Bxd2+ 6. Kxd2 O-O
>                                    7. Nc5 Nd8 8. Bc4 Nf4 9. Rhe1 Rf6 10.
>                                    Re5
>               13    30:52  -1.34   1. Nxd5 exd5 2. Qxd5 Bb4+ 3. c3 Bd6
>                                    4. O-O a6 5. Nxh7 Qe6 6. Qxe6+ Bxe6
>                                    7. Ng5 axb5 8. Nxe6 Kf7
>               13->  43:18  -1.34   1. Nxd5 exd5 2. Qxd5 Bb4+ 3. c3 Bd6
>                                    4. O-O a6 5. Nxh7 Qe6 6. Qxe6+ Bxe6
>                                    7. Ng5 axb5 8. Nxe6 Kf7
>               14    54:31  -1.33   1. Nxd5 exd5 2. Qxd5 Bd6 3. O-O a6
>                                    4. Ba4 Kf8 5. Rad1 Bc7 6. Rfe1 Qe7
>                                    7. Bb3 a5
>              time=60:00  cpu=99%  mat=-1  n=1952193119  fh=7%  nps=542173
>              ext-> checks=67028207 recaps=7516093 pawns=143792 1rep=2862345
>thrt:96585
>              predicted=0  nodes=1952193119  evals=458287353
>              endgame tablebase-> probes done=0  successful=0
>              hashing-> trans/ref=0%  pawn=0%  used=99%


Sorry, I couldn't resist... I get roughly the same result timewise with "urban
legend" Q5T, Dann. (Q5T Experimental, but that's only a slight change from Q5T,
it has [MOBILITY = 45], I don't think that makes much difference). I don't think
the Celeron can match the NPS that you get. Another engine was in the
background. A slightly positive score to match!

1.d4 Nf6 2.Nc3 d5 3.e4 e6 4.e5 Nfd7 5.Nf3 c5
6.dxc5 Nc6 7.Bf4 Bxc5 8.Bd3 f5 9.Ng5 Ndxe5 10.Bb5 Qf6
 *

[D]r1b1k2r/pp4pp/2n1pq2/1BbpnpN1/5B2/2N5/PPP2PPP/R2QK2R w KQkq -

Rebel Engine for ECTool. (c) Ed Schröder

Engine version   :  REBEL CENTURY 2
Rebel personality :  "Q5T Experimental"
Opening book file :  REBEL.MVS
Hash table size  :  40 MB
Analysis mode   :  Analyzing next move
Refresh interval : 500 ms

Last Move : 10... Qf6 (White to play)

00:01  03.00  0.27  11.Na4 Bb4+ 12.c3 h6 13.Qh5+ g6
00:02  04.00  0.23  11.Na4 Bb4+ 12.c3 h6 13.Qh5+ g6 14.Qe2
00:04  05.00  0.14  11.Na4 Bb4+ 12.c3 h6 13.Nf3 Bd6 14.Nd4
00:05  05.02  0.15  11.O-O Bd7 12.Na4 Bb4 13.Qh5+ Qg6
00:10  06.00  0.07  11.O-O h6 12.Qh5+ Qg6 13.Qh4 Bd7
00:28  06.11  0.08  11.Qe2 Bd6 12.O-O Bd7 13.Bxc6 bxc6 14.Rae1
00:33  07.00  0.14  11.Qe2 Bd6 12.O-O Bd7 13.Bxc6 bxc6 14.Rae1 c5 15.Qh5+
01:19  08.00  0.13  11.Qe2 Ng6 12.Nxd5 Qxb2 13.Bxc6+ bxc6 14.Nc7+ Kf8 15.Ncxe6+
Bxe6 16.Nxe6+ Kg8+ 17.O-O Nxf4 18.Nxf4
03:27  09.00  -0.03  11.Qe2 Kf8 12.O-O-O Ng6 13.Bd2 h6 14.Nf3 Bd7 15.Be3
08:56  10.00  -0.22  11.Qe2 Kf8 12.O-O-O Ng6 13.Bd2 Nd4 14.Qd3 f4 15.h4 Nxb5
16.Qxb5
09:21  10.01  -0.18  11.O-O Ng6 12.Qh5 h6 13.Nh3 Bd4 14.Bd2 O-O 15.Rae1
42:04  10.04  -0.18  11.Nxd5
53:10  10.04  0.27  11.Nxd5 exd5 12.Qxd5 Bb4+ 13.c3 Bd6 14.O-O-O Nd3+ 15.Rxd3
Bxf4+ 16.Kb1 Bxg5+ 17.Re1+




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