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BGonline.org Forums
Proper backgame technique?
Posted By: Daniel Murphy In Response To: Proper backgame technique? (PersianLord)
Date: Tuesday, 20 May 2008, at 3:08 a.m.
The two positions diagrammed above are around move number 57 in the Snowie analysis of the very long game.
Unlike Gnubg, at least Snowie "knows" that the game's about 50-50 in those two positions. Also, later in the game (Snowie move Green 121):
DMP. Blue to play 3-4
yeti_yew 175
PersianLord 149 Position ID: wNx7AwCrAwRsIw Match ID: MIExAAAAAAAA
• yeti_yew moves 12/5
... Snowie 1-ply plays 20/17 21/17.
Alert: bad move ( -0.039)
Alert: unlucky roll! ( +0.002)
# Ply Move Equity 1 4 24/17 -0.283 0.358 0.073 0.001 - 0.642 0.158 0.001 2 4 21/17 12/9 -0.305 ( -0.022) 0.347 0.067 0.001 - 0.653 0.169 0.002 3 4 24/21 12/8 -0.318 ( -0.035) 0.341 0.066 0.001 - 0.659 0.166 0.001 4 4 24/20 12/9 -0.319 ( -0.036) 0.340 0.066 0.001 - 0.660 0.161 0.001 • 5 4 12/5 -0.323 ( -0.039) 0.339 0.067 0.001 - 0.661 0.170 0.001 6 4 20/17 12/8 -0.366 ( -0.083) 0.317 0.061 0.001 - 0.683 0.204 0.003 7 4 21/17 4/1 -0.368 ( -0.085) 0.316 0.052 0.000 - 0.684 0.184 0.002 8 4 21/17 20/17 -0.374 ( -0.090) 0.313 0.066 0.001 - 0.687 0.186 0.006
Annotation1. Cubeful 0-ply 24/20 12/9 Eq.: -0.233
0.383 0.081 0.001 - 0.617 0.129 0.001
0-ply cubeful prune [expert]
10. Cubeful 0-ply 21/17 20/17 Eq.: -0.418 ( -0.185)
0.291 0.059 0.001 - 0.709 0.212 0.008
0-ply cubeful prune [expert]
1. Cubeful 1-ply 24/21 12/8 Eq.: -0.501
0.250 0.040 0.001 - 0.750 0.189 0.002
1-ply cubeful prune
4. Cubeful 1-ply 21/17 20/17 Eq.: -0.542 ( -0.042)
0.229 0.051 0.001 - 0.771 0.196 0.007
1-ply cubeful prune
1. Cubeful 2-ply 24/17 Eq.: -0.233
0.383 0.079 0.001 - 0.617 0.147 0.001
2-ply cubeful prune [world class]
10. Cubeful 2-ply 21/17 20/17 Eq.: -0.396 ( -0.162)
0.302 0.063 0.001 - 0.698 0.202 0.007
2-ply cubeful prune [world class]
1. Cubeful 3-ply 24/17 Eq.: -0.480
0.260 0.059 0.001 - 0.740 0.208 0.003
3-ply cubeful prune [grandmaster]
7. Cubeful 3-ply 21/17 20/17 Eq.: -0.541 ( -0.061)
0.230 0.051 0.001 - 0.770 0.214 0.008
3-ply cubeful prune [grandmaster]
1. Cubeful 4-ply 24/17 Eq.: -0.283
0.358 0.073 0.001 - 0.642 0.158 0.001
4-ply cubeful prune
8. Cubeful 4-ply 21/17 20/17 Eq.: -0.374 ( -0.090)
0.313 0.066 0.001 - 0.687 0.186 0.006
4-ply cubeful prune
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