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Midgame doubles #2 - ROLLOUT & VARIANT

Posted By: Karol Szczerek
Date: Saturday, 1 July 2017, at 9:07 p.m.

In Response To: Midgame doubles #2 (Karol Szczerek)

I thought I can't really blitz all-out with undeveloped back men behind a serious frontal structure of White. I thought I have to advance to 22pt. and then was considering tempo 4/2(2)* or building plays of either 13/9 or 11/9(2).

I've overlooked an important factor. White has only built his 5pt. so far, and the rest is just blots/builders - threatening to improve the block, but he won't be able to do that when he's on the bar. In fact, his outfield blot is a big liability right now. It makes blitz the right plan.





White is Player 2

score: 0
pip: 153
Unlimited Game
pip: 151
score: 0

Blue is Player 1
XGID=-aaBB-B-B--BcC-a-c-cc---B-:0:0:1:22:0:0:0:0:10
Blue to play 22

1.Rollout14/2*(2) 3/1*(2) eq: +0,208
Player:
Opponent:
52,35% (G:29,32% B:0,88%)
47,65% (G:16,18% B:1,20%)
Conf.: ± 0,017 (+0,192...+0,225) - [100,0%]
Duration: 8 minutes 25 seconds
2.Rollout124/22(2) 4/2*(2) eq: +0,171 (-0,037)
Player:
Opponent:
52,61% (G:19,76% B:1,01%)
47,39% (G:12,74% B:0,59%)
Conf.: ± 0,012 (+0,159...+0,183) - [0,0%]
Duration: 10 minutes 30 seconds
3.Rollout124/22(2) 3/1*(2) eq: +0,140 (-0,069)
Player:
Opponent:
52,12% (G:19,92% B:0,66%)
47,88% (G:12,86% B:0,57%)
Conf.: ± 0,013 (+0,126...+0,153) - [0,0%]
Duration: 9 minutes 50 seconds
4.Rollout124/22(2) 13/9eq: +0,137 (-0,071)
Player:
Opponent:
52,25% (G:18,50% B:0,82%)
47,75% (G:12,40% B:0,59%)
Conf.: ± 0,014 (+0,123...+0,151) - [0,0%]
Duration: 10 minutes 35 seconds
5.Rollout111/7(2)eq: +0,105 (-0,104)
Player:
Opponent:
52,19% (G:20,20% B:0,94%)
47,81% (G:16,01% B:0,93%)
Conf.: ± 0,015 (+0,090...+0,119) - [0,0%]
Duration: 8 minutes 42 seconds
6.Rollout124/22(2) 11/9(2)eq: +0,089 (-0,119)
Player:
Opponent:
51,34% (G:16,19% B:0,69%)
48,66% (G:12,23% B:0,51%)
Conf.: ± 0,012 (+0,077...+0,102) - [0,0%]
Duration: 9 minutes 25 seconds
1 1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10

Below is the variant, where White's blot was moved from 10 to 8pt. This small change immediately makes the blitzing play wrong.





White is Player 2

score: 0
pip: 151
Unlimited Game
pip: 151
score: 0

Blue is Player 1
XGID=-aaBB-B-B--BcC---d-cc---B-:0:0:1:22:0:0:0:0:10
Blue to play 22

1.Rollout111/7(2)eq: +0,196
Player:
Opponent:
54,42% (G:20,21% B:0,86%)
45,58% (G:14,77% B:0,81%)
Conf.: ± 0,014 (+0,182...+0,211) - [56,2%]
Duration: 9 minutes 25 seconds
2.Rollout124/22(2) 13/9eq: +0,195 (-0,002)
Player:
Opponent:
54,00% (G:18,09% B:0,74%)
46,00% (G:11,83% B:0,49%)
Conf.: ± 0,014 (+0,181...+0,208) - [43,8%]
Duration: 10 minutes 27 seconds
3.Rollout124/22(2) 11/9(2)eq: +0,163 (-0,033)
Player:
Opponent:
53,20% (G:16,95% B:0,61%)
46,80% (G:11,35% B:0,44%)
Conf.: ± 0,013 (+0,150...+0,176) - [0,0%]
Duration: 9 minutes 42 seconds
4.Rollout124/22(2) 3/1*(2) eq: +0,150 (-0,047)
Player:
Opponent:
52,37% (G:19,25% B:0,45%)
47,63% (G:12,58% B:0,55%)
Conf.: ± 0,013 (+0,137...+0,163) - [0,0%]
Duration: 9 minutes 44 seconds
5.Rollout124/22(2) 4/2*(2) eq: +0,149 (-0,047)
Player:
Opponent:
52,30% (G:19,65% B:0,76%)
47,70% (G:12,77% B:0,57%)
Conf.: ± 0,016 (+0,132...+0,165) - [0,0%]
Duration: 10 minutes 00 second
6.Rollout14/2*(2) 3/1*(2) eq: +0,132 (-0,064)
Player:
Opponent:
50,77% (G:28,15% B:0,33%)
49,23% (G:16,57% B:1,12%)
Conf.: ± 0,014 (+0,118...+0,147) - [0,0%]
Duration: 8 minutes 09 seconds
1 1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10

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