Here's a problem that won't confuse many human players I guess, but which GnuBG 2-ply got wrong by a fair amount.
xG roller... also gets it wrong, by quite a lot. Some other xG settings (1-ply and 3-ply(red)) get it right though.
Will post more later.
What do Snowie and BGB say here?
The score (after 1 game) is: roadkillbooks 1, FIBSBoard forum 0 (match to 5 points)
Move number 13: FIBSBoard forum to play 24
| roadkillbooks | 124 |
|---|---|
| |
| FIBSBoard forum | 102 |
Position ID: 4W4zAAPrZhwABg Match ID: cAmxABAAAAAA | |
• FIBSBoard forum moves 9/3
| Cube decision | |||
|---|---|---|---|
| 2-ply cubeless equity | -0,2945 | (Money: -0,2575) | |
| 40,21 7,31 0,09 - 59,79 13,40 0,18 | |||
| Cubeful equities: | |||
| 1. | No double | -0,4269 | |
| 2. | Double, pass | +1,0000 | +1,4269 |
| 3. | Double, take | -1,1394 | -0,7124 |
| Proper cube action: | No double, take (33,3%) | ||
| # | Ply | Move | Equity | |
|---|---|---|---|---|
| 1 | 2 | 6/4 6/2 | -0,4078 | |
| 40,03 6,45 0,03 - 59,97 11,41 0,11 | ||||
| • | 2 | 2 | 9/3 | -0,4205 ( -0,0127) |
| 39,46 7,61 0,07 - 60,54 11,65 0,23 | ||||
| 3 | 2 | 6/2 3/1 | -0,5329 ( -0,1251) | |
| 37,05 5,87 0,03 - 62,95 11,79 0,13 | ||||
| 4 | 0 | 9/7 6/2 | -0,7423 ( -0,3345) | |
| 32,16 5,44 0,02 - 67,84 12,02 0,16 | ||||
| 5 | 0 | 6/2 4/2 | -0,7579 ( -0,3501) | |
| 32,22 4,67 0,02 - 67,78 12,14 0,11 | ||||
40,03 6,45 0,03 - 59,97 11,41 0,11
2-ply cubeful prune [world class]
2. Cubeful 2-ply 9/3 Eq.: -0,4205 ( -0,0127)
39,46 7,61 0,07 - 60,54 11,65 0,23
2-ply cubeful prune [world class]
1. Cubeful 3-ply 6/4 6/2 Eq.: -0,5119
37,87 7,30 0,08 - 62,13 13,85 0,17
3-ply cubeful prune [grandmaster]
2. Cubeful 3-ply 9/3 Eq.: -0,5314 ( -0,0196)
37,43 7,80 0,11 - 62,57 13,78 0,22
3-ply cubeful prune [grandmaster]
1. Cubeful 4-ply 6/4 6/2 Eq.: -0,4557
39,59 6,72 0,05 - 60,41 11,91 0,16
4-ply cubeful prune
2. Cubeful 4-ply 9/3 Eq.: -0,4610 ( -0,0054)
39,09 7,81 0,10 - 60,91 12,06 0,28
4-ply cubeful prune
==========================================
1. Rollout 9/3 Eq.: -0,5746
38,05 8,18 0,16 - 61,95 13,31 0,78 CL -0,3344 CF -0,5746
[ 0,15 0,12 0,02 - 0,15 0,17 0,14 CL 0,0046 CF 0,0114]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 863038590 and quasi-random dice
Play: 0-ply cubeful prune [expert]
Cube: 0-ply cubeful prune [expert]
2. Rollout 6/4 6/2 Eq.: -0,6196 ( -0,0450)
37,86 7,19 0,22 - 62,14 13,52 0,67 CL -0,3554 CF -0,6196
[ 0,15 0,12 0,07 - 0,15 0,17 0,11 CL 0,0046 CF 0,0121]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 863038590 and quasi-random dice
Play: 0-ply cubeful prune [expert]
Cube: 0-ply cubeful prune [expert]
playBunny's full 2-ply rollout:
1 .. 9/3 ....... -0.651 ............ 37.2% ... 7.8% ... 0.1% -- 62.8% .. 13.2% ... 1.2%
2 .. 6/4 6/2 ... -0.707 (-0.056) ... 36.7% ... 7.2% ... 0.1% -- 63.3% .. 14.4% ... 0.9%
Std Err ......... 0.007 ............. 0.1% ... 0.1% ... 0.0% --- 0.1% ... 0.2% ... 0.1%