The following position from Depreli's series came up in which GNU 0.14
chose one of the weakest replies:
GNU (O, 0 pts) vs. Albert (X, 0 pts) (money game)
Move number 6: O to play 63
GNU Backgammon Position ID: Ms/gBwBYd4PBAA
Match ID : MAEPAAAAAAAA
+-1--2--3--4--5--6-------7--8--9-10-11-12-+ O: GNU
| O O O | | O O X | 0 points
| O O | | O O X | Rolled 63
| O | | O X |
| | | X |
| | | 6 |
| |BAR| |^ (Cube: 1)
| | | |
| X | | |
| X | | |
| X X | | O X O |
| X X X | | O X O | 0 points
+24-23-22-21-20-19------18-17-16-15-14-13-+ X: Albert
Pip counts: O 130, X 128
* GNU moves 13/10 13/7
Rolled 63 (+0.019):
*1. Cubeful 2-ply 13/10 13/7 Eq.: +0.214
56.7% 2.3% 0.0% - 43.3% 0.7% 0.0%
2. Cubeful 2-ply 8/5 8/2 Eq.: +0.203 ( -0.012)
56.1% 3.2% 0.0% - 43.9% 1.0% 0.0%
3. Cubeful 2-ply 8/5 7/1 Eq.: +0.202 ( -0.012)
56.1% 3.1% 0.0% - 43.9% 1.0% 0.0%
4. Cubeful 2-ply 8/2 7/4 Eq.: +0.189 ( -0.025)
55.8% 2.9% 0.0% - 44.2% 1.0% 0.0%
5. Cubeful 2-ply 8/2 6/3 Eq.: +0.188 ( -0.026)
55.7% 3.0% 0.0% - 44.3% 1.0% 0.0%
MOVE 8/2 8/5 8/2 7/4 8/2 5/2 8/5 7/1
13/7 13/10
BOTS' CHOICE S3, G13 G12 S4
G14, J
ROLLOUTS 0.098 0.084 0.077 0.074 0.058
Rollouts by SW3.2 1296 trials 2ply huge 3ply cube with bearoff database.
BTW, G12 is Gnu 0.12, G13, Gnu 0.13 etc.
Neil Kazaross, who had chosen the correct move unsurprisingly, added:
We see an example of why I am hoping more training in holding games will
improve GNU even more.
Albert
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