Gothmog score output problem?

[David Dahlem]

Geschrieben von:/Posted by: David Dahlem at 01 July 2004 22:40:50:

I've noticed strange score output behaviour of Gothmog 048 as WB engine in Arena. While Gothmog is thinking, it displays a normal score, but when it makes it's move, the score is reset to 0.00. And this 0.00 score is output to the pgn file. Is this only happening with me, or is this a known problem? Here is an example game, notice most of blacks moves are scored as 0.00, even it's last move, while the opponent shows a forced mate and resigns.
[Event "Revival Gauntlet"]
[Site "?"]
[Date "2004.07.01"]
[Round "1"]
[White "Lg_Revival"]
[Black "Gothmog 048"]
[Result "0-1"]
[ECO "C15"]
[Opening "French"]
[Time "14:00:36"]
[Variation "Winawer, Alekhine Gambit, Kan Variation"]
[TimeControl "160/2400:160/2400:160/2400"]
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Bxc3+ 6.Nxc3 Nc6 7.Bb5 {-0.28/13 18} f5 {+0.03/11 23} 8.Bxc6+ {-0.16/12 18} bxc6 {0.00/13 23} 9.Qh5+ {-0.28/13 16} g6 {+0.31/13 23} 10.Qe2 {-0.37/15 18} Qxd4 {0.00/13 23} 11.Be3 {-0.57/12 15} Qf6 {0.00/12 23} 12.O-O {-0.57/13 18} Ne7 {0.00/12 23} 13.Qc4 {-0.63/13 19} e5 {+0.68/11 23} 14.Bc5 {-0.70/13 19} Qe6 {0.00/13 22} 15.Qa4 {-0.57/14 16} a5 {0.00/13 22} 16.Rfd1 {-1.04/13 43} Kf7 {0.00/13 22} 17.Bxe7 {-1.50/13 18} Kxe7 {+1.28/13 22} 18.Rd2 {-1.54/14 17} Bd7 {0.00/13 22} 19.Rad1 {-1.97/12 17} Rhd8 {0.00/14 22} 20.h4 {-2.08/13 17} c5 {0.00/14 22} 21.Qb3 {-2.35/14 26} Qxb3 {+2.37/14 22} 22.cxb3 {-2.34/15 5} Bc6 {0.00/14 22} 23.R2xd8 {-2.63/16 13} Rxd8 {0.00/15 22} 24.Rxd8 {-2.77/17 12} Kxd8 {+2.62/15 22} 25.Kf1 {-2.83/19 28} Ke7 {0.00/15 22} 26.Ke2 {-2.83/18 16} Kd6 {0.00/14 22} 27.Kd2 {-2.86/16 16} Bd5 {0.00/14 21} 28.Nb5+ {-2.86/16 16} Kc6 {+3.53/15 21} 29.Nc3 {-2.86/17 14} Bxb3 {+3.53/14 21} 30.g4 {-2.90/18 16} Bd5 {0.00/14 21} 31.g5 {-2.91/17 15} c4 {0.00/15 21} 32.Ke3 {-3.24/16 12} f4+ {0.00/16 21} 33.Kd2 {-3.35/17 15} Kc5 {0.00/15 21} 34.Ke2 {-3.37/18 16} Bc6 {+3.93/14 21} 35.Kd2 {-3.36/18 16} Kd4 {0.00/15 21} 36.Ne2+ {-3.36/18 16} Kd5 {0.00/15 21} 37.Nc3+ {-3.76/17 16} Ke6 {+5.34/15 21} 38.Ne2 {-4.88/17 16} Kf5 {0.00/14 21} 39.Ke1 {-7.09/18 28} Kg4 {+6.46/15 20} 40.h5 {-8.06/19 27} gxh5 {0.00/14 20} 41.Kf1 {-8.57/17 13} h4 {+7.12/13 20} 42.Ng1 {-11.69/15 13} h3 {0.00/14 20} 43.Nxh3 {-15.90/16 15} Kxh3 {+8.09/15 20} 44.g6 {-20.76/17 15} hxg6 {+8.03/12 20} 45.Kg1 {-M12/17 15} f3 {0.00/14 20} 46.a4 {-M9/19 13} {White resigns} 0-1
Regards
Dave

[Dann Corbit]

Geschrieben von:/Posted by: Dann Corbit at 01 July 2004 22:47:27:
Als Antwort auf:/In reply to: Gothmog score output problem? geschrieben von:/posted by: David Dahlem at 01 July 2004 22:40:50:

I've noticed strange score output behaviour of Gothmog 048 as WB engine in Arena. While Gothmog is thinking, it displays a normal score, but when it makes it's move, the score is reset to 0.00. And this 0.00 score is output to the pgn file. Is this only happening with me, or is this a known problem? Here is an example game, notice most of blacks moves are scored as 0.00, even it's last move, while the opponent shows a forced mate and resigns.
[Event "Revival Gauntlet"]
[Site "?"]
[Date "2004.07.01"]
[Round "1"]
[White "Lg_Revival"]
[Black "Gothmog 048"]
[Result "0-1"]
[ECO "C15"]
[Opening "French"]
[Time "14:00:36"]
[Variation "Winawer, Alekhine Gambit, Kan Variation"]
[TimeControl "160/2400:160/2400:160/2400"]
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Bxc3+ 6.Nxc3 Nc6 7.Bb5 {-0.28/13 18} f5 {+0.03/11 23} 8.Bxc6+ {-0.16/12 18} bxc6 {0.00/13 23} 9.Qh5+ {-0.28/13 16} g6 {+0.31/13 23} 10.Qe2 {-0.37/15 18} Qxd4 {0.00/13 23} 11.Be3 {-0.57/12 15} Qf6 {0.00/12 23} 12.O-O {-0.57/13 18} Ne7 {0.00/12 23} 13.Qc4 {-0.63/13 19} e5 {+0.68/11 23} 14.Bc5 {-0.70/13 19} Qe6 {0.00/13 22} 15.Qa4 {-0.57/14 16} a5 {0.00/13 22} 16.Rfd1 {-1.04/13 43} Kf7 {0.00/13 22} 17.Bxe7 {-1.50/13 18} Kxe7 {+1.28/13 22} 18.Rd2 {-1.54/14 17} Bd7 {0.00/13 22} 19.Rad1 {-1.97/12 17} Rhd8 {0.00/14 22} 20.h4 {-2.08/13 17} c5 {0.00/14 22} 21.Qb3 {-2.35/14 26} Qxb3 {+2.37/14 22} 22.cxb3 {-2.34/15 5} Bc6 {0.00/14 22} 23.R2xd8 {-2.63/16 13} Rxd8 {0.00/15 22} 24.Rxd8 {-2.77/17 12} Kxd8 {+2.62/15 22} 25.Kf1 {-2.83/19 28} Ke7 {0.00/15 22} 26.Ke2 {-2.83/18 16} Kd6 {0.00/14 22} 27.Kd2 {-2.86/16 16} Bd5 {0.00/14 21} 28.Nb5+ {-2.86/16 16} Kc6 {+3.53/15 21} 29.Nc3 {-2.86/17 14} Bxb3 {+3.53/14 21} 30.g4 {-2.90/18 16} Bd5 {0.00/14 21} 31.g5 {-2.91/17 15} c4 {0.00/15 21} 32.Ke3 {-3.24/16 12} f4+ {0.00/16 21} 33.Kd2 {-3.35/17 15} Kc5 {0.00/15 21} 34.Ke2 {-3.37/18 16} Bc6 {+3.93/14 21} 35.Kd2 {-3.36/18 16} Kd4 {0.00/15 21} 36.Ne2+ {-3.36/18 16} Kd5 {0.00/15 21} 37.Nc3+ {-3.76/17 16} Ke6 {+5.34/15 21} 38.Ne2 {-4.88/17 16} Kf5 {0.00/14 21} 39.Ke1 {-7.09/18 28} Kg4 {+6.46/15 20} 40.h5 {-8.06/19 27} gxh5 {0.00/14 20} 41.Kf1 {-8.57/17 13} h4 {+7.12/13 20} 42.Ng1 {-11.69/15 13} h3 {0.00/14 20} 43.Nxh3 {-15.90/16 15} Kxh3 {+8.09/15 20} 44.g6 {-20.76/17 15} hxg6 {+8.03/12 20} 45.Kg1 {-M12/17 15} f3 {0.00/14 20} 46.a4 {-M9/19 13} {White resigns} 0-1

Are the replys single move possibilities?
There are several engines that do no analysis at all when there is only a single choice to make (e.g. crafty)


my ftp site {remove http:// unless you like error messages}

[David Dahlem]

Geschrieben von:/Posted by: David Dahlem at 01 July 2004 22:53:06:
Als Antwort auf:/In reply to: Re: Gothmog score output problem? geschrieben von:/posted by: Dann Corbit at 01 July 2004 22:47:27:

I've noticed strange score output behaviour of Gothmog 048 as WB engine in Arena. While Gothmog is thinking, it displays a normal score, but when it makes it's move, the score is reset to 0.00. And this 0.00 score is output to the pgn file. Is this only happening with me, or is this a known problem? Here is an example game, notice most of blacks moves are scored as 0.00, even it's last move, while the opponent shows a forced mate and resigns.
[Event "Revival Gauntlet"]
[Site "?"]
[Date "2004.07.01"]
[Round "1"]
[White "Lg_Revival"]
[Black "Gothmog 048"]
[Result "0-1"]
[ECO "C15"]
[Opening "French"]
[Time "14:00:36"]
[Variation "Winawer, Alekhine Gambit, Kan Variation"]
[TimeControl "160/2400:160/2400:160/2400"]
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Bxc3+ 6.Nxc3 Nc6 7.Bb5 {-0.28/13 18} f5 {+0.03/11 23} 8.Bxc6+ {-0.16/12 18} bxc6 {0.00/13 23} 9.Qh5+ {-0.28/13 16} g6 {+0.31/13 23} 10.Qe2 {-0.37/15 18} Qxd4 {0.00/13 23} 11.Be3 {-0.57/12 15} Qf6 {0.00/12 23} 12.O-O {-0.57/13 18} Ne7 {0.00/12 23} 13.Qc4 {-0.63/13 19} e5 {+0.68/11 23} 14.Bc5 {-0.70/13 19} Qe6 {0.00/13 22} 15.Qa4 {-0.57/14 16} a5 {0.00/13 22} 16.Rfd1 {-1.04/13 43} Kf7 {0.00/13 22} 17.Bxe7 {-1.50/13 18} Kxe7 {+1.28/13 22} 18.Rd2 {-1.54/14 17} Bd7 {0.00/13 22} 19.Rad1 {-1.97/12 17} Rhd8 {0.00/14 22} 20.h4 {-2.08/13 17} c5 {0.00/14 22} 21.Qb3 {-2.35/14 26} Qxb3 {+2.37/14 22} 22.cxb3 {-2.34/15 5} Bc6 {0.00/14 22} 23.R2xd8 {-2.63/16 13} Rxd8 {0.00/15 22} 24.Rxd8 {-2.77/17 12} Kxd8 {+2.62/15 22} 25.Kf1 {-2.83/19 28} Ke7 {0.00/15 22} 26.Ke2 {-2.83/18 16} Kd6 {0.00/14 22} 27.Kd2 {-2.86/16 16} Bd5 {0.00/14 21} 28.Nb5+ {-2.86/16 16} Kc6 {+3.53/15 21} 29.Nc3 {-2.86/17 14} Bxb3 {+3.53/14 21} 30.g4 {-2.90/18 16} Bd5 {0.00/14 21} 31.g5 {-2.91/17 15} c4 {0.00/15 21} 32.Ke3 {-3.24/16 12} f4+ {0.00/16 21} 33.Kd2 {-3.35/17 15} Kc5 {0.00/15 21} 34.Ke2 {-3.37/18 16} Bc6 {+3.93/14 21} 35.Kd2 {-3.36/18 16} Kd4 {0.00/15 21} 36.Ne2+ {-3.36/18 16} Kd5 {0.00/15 21} 37.Nc3+ {-3.76/17 16} Ke6 {+5.34/15 21} 38.Ne2 {-4.88/17 16} Kf5 {0.00/14 21} 39.Ke1 {-7.09/18 28} Kg4 {+6.46/15 20} 40.h5 {-8.06/19 27} gxh5 {0.00/14 20} 41.Kf1 {-8.57/17 13} h4 {+7.12/13 20} 42.Ng1 {-11.69/15 13} h3 {0.00/14 20} 43.Nxh3 {-15.90/16 15} Kxh3 {+8.09/15 20} 44.g6 {-20.76/17 15} hxg6 {+8.03/12 20} 45.Kg1 {-M12/17 15} f3 {0.00/14 20} 46.a4 {-M9/19 13} {White resigns} 0-1

Are the replys single move possibilities?
There are several engines that do no analysis at all when there is only a single choice to make (e.g. crafty)

No, there couldn't possibly be this many single move possibilities in one game. Gothmog thinks normally, with a normal score, and then resets the score to 0.00. You can see by the thinking time, for example, {0.00/14 20}, Gothmog thinks for 20 seconds.
Regards
Dave

[David Dahlem]

Geschrieben von:/Posted by: David Dahlem at 01 July 2004 23:19:46:
Als Antwort auf:/In reply to: Re: Gothmog score output problem? geschrieben von:/posted by: Dann Corbit at 01 July 2004 22:47:27:

I've noticed strange score output behaviour of Gothmog 048 as WB engine in Arena. While Gothmog is thinking, it displays a normal score, but when it makes it's move, the score is reset to 0.00. And this 0.00 score is output to the pgn file. Is this only happening with me, or is this a known problem? Here is an example game, notice most of blacks moves are scored as 0.00, even it's last move, while the opponent shows a forced mate and resigns.
[Event "Revival Gauntlet"]
[Site "?"]
[Date "2004.07.01"]
[Round "1"]
[White "Lg_Revival"]
[Black "Gothmog 048"]
[Result "0-1"]
[ECO "C15"]
[Opening "French"]
[Time "14:00:36"]
[Variation "Winawer, Alekhine Gambit, Kan Variation"]
[TimeControl "160/2400:160/2400:160/2400"]
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Bxc3+ 6.Nxc3 Nc6 7.Bb5 {-0.28/13 18} f5 {+0.03/11 23} 8.Bxc6+ {-0.16/12 18} bxc6 {0.00/13 23} 9.Qh5+ {-0.28/13 16} g6 {+0.31/13 23} 10.Qe2 {-0.37/15 18} Qxd4 {0.00/13 23} 11.Be3 {-0.57/12 15} Qf6 {0.00/12 23} 12.O-O {-0.57/13 18} Ne7 {0.00/12 23} 13.Qc4 {-0.63/13 19} e5 {+0.68/11 23} 14.Bc5 {-0.70/13 19} Qe6 {0.00/13 22} 15.Qa4 {-0.57/14 16} a5 {0.00/13 22} 16.Rfd1 {-1.04/13 43} Kf7 {0.00/13 22} 17.Bxe7 {-1.50/13 18} Kxe7 {+1.28/13 22} 18.Rd2 {-1.54/14 17} Bd7 {0.00/13 22} 19.Rad1 {-1.97/12 17} Rhd8 {0.00/14 22} 20.h4 {-2.08/13 17} c5 {0.00/14 22} 21.Qb3 {-2.35/14 26} Qxb3 {+2.37/14 22} 22.cxb3 {-2.34/15 5} Bc6 {0.00/14 22} 23.R2xd8 {-2.63/16 13} Rxd8 {0.00/15 22} 24.Rxd8 {-2.77/17 12} Kxd8 {+2.62/15 22} 25.Kf1 {-2.83/19 28} Ke7 {0.00/15 22} 26.Ke2 {-2.83/18 16} Kd6 {0.00/14 22} 27.Kd2 {-2.86/16 16} Bd5 {0.00/14 21} 28.Nb5+ {-2.86/16 16} Kc6 {+3.53/15 21} 29.Nc3 {-2.86/17 14} Bxb3 {+3.53/14 21} 30.g4 {-2.90/18 16} Bd5 {0.00/14 21} 31.g5 {-2.91/17 15} c4 {0.00/15 21} 32.Ke3 {-3.24/16 12} f4+ {0.00/16 21} 33.Kd2 {-3.35/17 15} Kc5 {0.00/15 21} 34.Ke2 {-3.37/18 16} Bc6 {+3.93/14 21} 35.Kd2 {-3.36/18 16} Kd4 {0.00/15 21} 36.Ne2+ {-3.36/18 16} Kd5 {0.00/15 21} 37.Nc3+ {-3.76/17 16} Ke6 {+5.34/15 21} 38.Ne2 {-4.88/17 16} Kf5 {0.00/14 21} 39.Ke1 {-7.09/18 28} Kg4 {+6.46/15 20} 40.h5 {-8.06/19 27} gxh5 {0.00/14 20} 41.Kf1 {-8.57/17 13} h4 {+7.12/13 20} 42.Ng1 {-11.69/15 13} h3 {0.00/14 20} 43.Nxh3 {-15.90/16 15} Kxh3 {+8.09/15 20} 44.g6 {-20.76/17 15} hxg6 {+8.03/12 20} 45.Kg1 {-M12/17 15} f3 {0.00/14 20} 46.a4 {-M9/19 13} {White resigns} 0-1

Are the replys single move possibilities?
There are several engines that do no analysis at all when there is only a single choice to make (e.g. crafty)

Here is a sample debug of one move, note the normal thinking and normal score. Then the score is reset to 0.

26818**New move before message, game, Game: 0 Move: 1
26821**New move after message, game 0, should be: 0 engine to move:2
26831*2*Start calc, move no: 1
27038>2:level 160 40 0
27041>2:new
27043>2:random
27045>2:ics -
27047>2:level 160 40 0
27115>2:post
27117>2:hard
27119>2:easy
27120>2:ping 2
271432:computer
27327>2:time 240000
27329>2:otim 240000
27331>2:usermove e2e4
27335

[Tord Romstad]

Geschrieben von:/Posted by: Tord Romstad at 02 July 2004 01:10:33:
Als Antwort auf:/In reply to: Gothmog score output problem? geschrieben von:/posted by: David Dahlem at 01 July 2004 22:40:50:

I've noticed strange score output behaviour of Gothmog 048 as WB engine in Arena. While Gothmog is thinking, it displays a normal score, but when it makes it's move, the score is reset to 0.00. And this 0.00 score is output to the pgn file. Is this only happening with me, or is this a known problem? Here is an example game, notice most of blacks moves are scored as 0.00, even it's last move, while the opponent shows a forced mate and resigns.

There is one very old cosmetic search output bug in Gothmog which I have always been too
lazy to fix. Whenever it starts thinking, it decides on a maximum thinking time for the
current move. Usually, it will play a move a long time before this maximum time is
reached. But on those occasions where the search is aborted in the middle of an iteration
because the maximum time is reached, Gothmog will always report a score of 0.00. I
guess this is what happened in your game, although the 0.00 scores admittedly seem
to be disturbingly frequent in this game.
I hope to have a look at this bug before 1.0 is released. Easy to fix.
Tord

[David Dahlem]

Geschrieben von:/Posted by: David Dahlem at 02 July 2004 03:12:08:
Als Antwort auf:/In reply to: Re: Gothmog score output problem? geschrieben von:/posted by: Tord Romstad at 02 July 2004 01:10:33:

I've noticed strange score output behaviour of Gothmog 048 as WB engine in Arena. While Gothmog is thinking, it displays a normal score, but when it makes it's move, the score is reset to 0.00. And this 0.00 score is output to the pgn file. Is this only happening with me, or is this a known problem? Here is an example game, notice most of blacks moves are scored as 0.00, even it's last move, while the opponent shows a forced mate and resigns.

There is one very old cosmetic search output bug in Gothmog which I have always been too
lazy to fix. Whenever it starts thinking, it decides on a maximum thinking time for the
current move. Usually, it will play a move a long time before this maximum time is
reached. But on those occasions where the search is aborted in the middle of an iteration
because the maximum time is reached, Gothmog will always report a score of 0.00. I
guess this is what happened in your game, although the 0.00 scores admittedly seem
to be disturbingly frequent in this game.
I hope to have a look at this bug before 1.0 is released. Easy to fix.
Tord

Thanks Tord
At least i now know it's not a problem caused by my configuration. I've watched the last 5 games of Gothmog, and the frequency of the 0.00 score seems to be the same as in the game i posted.
Regards
Dave