Poll
Question: 
RED is ahead 27 pips in the count, down 3-4 in a 7-point match. WHITE rolls 63. What is my best move?
RED is ahead 27 pips in the count, down 3-4 in a 7-point match. WHITE rolls 63. What is my best move?
Option 1: 15/6
Option 2: 11/8 11/5
Option 3: 8/5 8/2
Title: Move 106 - From behind
Post by: sixty_something on October 25, 2008, 06:36:49 PM
Post by: sixty_something on October 25, 2008, 06:36:49 PM
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one vote per user .. results of the poll are shown after you have voted
GNUbg says:
This one really isn't too hard, but I missed it three times playing against GNUbg in Tutor mode. My thinking was leaving the blot at 15, vulnerable only to an indirect shot, was a good idea as a way to get an extra shot should RED be forced to split his back men. Clearly, it wasn't. RED might have two to three rolls before having to split them, and almost any 8 would be a killer resulting in a possible Gammon. GNUbg says:
1. Cubeful 0-ply 15/6 Eq.: -0.052
0.490 0.031 0.001 - 0.510 0.033 0.000
0-ply cubeful prune [expert]
2. Cubeful 0-ply 11/8 11/5 Eq.: -0.424 ( -0.372)
0.403 0.037 0.001 - 0.597 0.095 0.001
0-ply cubeful prune [expert]
3. Cubeful 0-ply 8/5 8/2 Eq.: -0.424 ( -0.372)
0.413 0.035 0.001 - 0.587 0.111 0.001
0-ply cubeful prune [expert]
Use the ID's below in GNUbg or Snowie to evaluate further:
Position ID: 27YJwABmmzETAA Match ID: cAnvADAAIAAA
Do not rejoice over what has not yet happened.
-- Egyptian Proverb
one vote per user .. results of the poll are shown after you have voted
GNUbg says:
Spoiler
This one really isn't too hard, but I missed it three times playing against GNUbg in Tutor mode. My thinking was leaving the blot at 15, vulnerable only to an indirect shot, was a good idea as a way to get an extra shot should RED be forced to split his back men. Clearly, it wasn't. RED might have two to three rolls before having to split them, and almost any 8 would be a killer resulting in a possible Gammon. GNUbg says:
1. Cubeful 0-ply 15/6 Eq.: -0.052
0.490 0.031 0.001 - 0.510 0.033 0.000
0-ply cubeful prune [expert]
2. Cubeful 0-ply 11/8 11/5 Eq.: -0.424 ( -0.372)
0.403 0.037 0.001 - 0.597 0.095 0.001
0-ply cubeful prune [expert]
3. Cubeful 0-ply 8/5 8/2 Eq.: -0.424 ( -0.372)
0.413 0.035 0.001 - 0.587 0.111 0.001
0-ply cubeful prune [expert]
[close]
Use the ID's below in GNUbg or Snowie to evaluate further:
Position ID: 27YJwABmmzETAA Match ID: cAnvADAAIAAA
Do not rejoice over what has not yet happened.
-- Egyptian Proverb