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[Bug-gnubg] Strange evaluation of position for hypergammon game
From: |
Nikolay Marinov |
Subject: |
[Bug-gnubg] Strange evaluation of position for hypergammon game |
Date: |
Tue, 16 Jan 2007 11:57:33 +0200 |
User-agent: |
Mozilla Thunderbird 1.0.2 (Windows/20050317) |
Hi All,
I have a problem with gnubg evaluation in hypergammon games. I
generated hyper3.bd, but in spite of this in some situtations evaluation
of given postions is very bad. I will attach You a game log in ".mat"
format in which you can see the last game of match where the correct
decision is to remove last checker from opponents field. Instead gnubg
evaluation program shows a hint (in 0ply,and 2ply) which keeps this
checkers in opponents field, but in the next turn opponent 100% will win
with backgammon. Also the coeficients in 0ply looks strange, because win
coeficient is 1 in situation where losing game is 100%. If I evaluate
all movements in 2ply gnubg shows that there is greater move. Do You
have some ideas from where this confusion may come? I use gnubg 0.14
version, in Windows XP SP2.
Regards,
Nikolay.
9 point match
Game 1
zero : 0 achilleas : 0
1) 63: 23/17 17/14 42: 24/20 22/20
2) 21: 24/22 14/13 52: 23/18 20/18
3) 65: 22/16 16/11 54: 20/15 15/11
4) 42: 22/18 11/9 52: 18/13 13/11
5) 42: 13/9 18/16 21: 11/9* 11/10
6) 33: 25/22 22/19 19/16* 9/6 51: 25/20 20/19*
7) 32: 25/22 9/7* 54: 25/21 10/5
8) Doubles => 2 Takes
9) 43: 7/3 16/13 32: 19/16 16/14
10) 42: 13/9 22/20* 22: 25/23 23/21 21/19(2)
11) 41: 9/5 20/19 21: 14/12 12/11
12) 41: 19/15 15/14* 32: 25/22* 22/20*
13) 54: 25/20 25/21 63: 20/14 14/11*
14) 21: 25/23 20/19 51: 19/14 19/18
15) 33: 21/18 19/16 18/15 16/13 65: 18/12* 14/9
16) 55: 25/20 23/18 18/13* 13/8 52: 25/20 11/9
17) 41: 15/11 20/19 42: 20/16 16/14*
18) 54: 25/20 8/4 42: 14/10 10/8
19) 64: 20/14 19/15 Doubles => 4
20) Drops
Game 2
zero : 0 achilleas : 2
1) 51: 24/19 23/22
2) 33: 22/19 19/16 16/13 13/10 42: 19/15* 22/20
3) 42: 25/23 24/20 33: 22/19 20/17 19/16 17/14
4) Doubles => 2 Takes
5) 62: 23/17 17/15 64: 16/10* 14/10
6) 42: 25/21 21/19 51: 15/10 10/9
7) 44: 23/19 20/16* 16/12 12/8 64: 25/19 19/15
8) 31: 19/16 8/7 52: 15/10 10/8
9) 54: 19/14 14/10 Doubles => 4
10) Takes 32: 10/7 10/8
11) 61: 16/10 7/6 51: 8/3 7/6
12) 11: 10/9(2) 9/8(2) 42: 8/6 6/2
13) 64: 8/2 8/4 31: 3/o 6/5
14) 43: 4/o 6/3 51: 5/o 2/1
15) 21: 3/1 2/1 42: 1/o
Game 3
zero : 0 achilleas : 6
1) 42: 24/20 22/20
2) 32: 24/21 23/21 32: 23/20 20/18
3) 54: 21/16 16/12 44: 20/16(2) 16/12(2)
4) 55: 22/17 21/16 17/12 12/7* 51: 25/20 20/19
5) 66: 16/10 12/6* 10/4 7/1 54: 25/21* 21/16
6) 21: 25/24 6/4 11: 12/11(2) 11/10(2)
7) 52: 24/19 19/17 33: 10/7(2) 7/4(2)
8) 54: 17/12 12/8 21: 16/14 14/13
9) 61: 8/2 4/3 Wins 1 points
Game 4
zero : 1 achilleas : 6
1) 65: 23/17 22/17
2) 54: 23/18 18/14 31: 24/21 21/20
3) 22: 22/20 20/18 14/12 12/10 62: 20/14 17/15*
4) 21: 25/24 18/16 31: 17/14 15/14
5) 51: 16/15 15/10 66: 14/8(3) 8/2
6) 54: 24/19 24/20 11: 8/7(2) 7/6(2)*
7) 63: 25/22 20/14 65: 6/o 6/1
8) 62: 10/4 4/2 11: 2/1 1/o(2)
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Nikolay Marinov <=