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Trap play breakeven

Posted By: Nack Ballard
Date: Sunday, 5 May 2019, at 12:16 a.m.

In Response To: MOCHY and MUCHY Day 1 positions **CONTRASTING ROLLOUTS** (Casper Van der Tak)

There is no roll better than 32 for making a trap play in this setup. However, even with that advantage it seems Blue's position is not quite at the breakeven for a qualified trap.

A factor against Blue is that his two far-side checkers are not optimally placed for a trap play. It is better to have at least one checker on the 13pt, if possible.

Talk is cheap. Below are three rollouts (with captions) that might elucidate my comments.

Nack




White is Player 2

score: 0
pip: 63
1 point match
pip: 89
score: 0

Blue is Player 1
XGID=-bBBBBCB------AA-------ee-:0:0:1:32:0:0:0:1:10

Your position, three checkers off


1.Rollout115/13 14/11eq: +0.783
Player:
Opponent:
89.17% (G:0.00% B:0.00%)
10.83% (G:0.04% B:0.00%)
Conf.: ± 0.001 (+0.782...+0.784) - [46.3%]
Duration: 31.9 seconds
2.Rollout115/10eq: +0.783 (0.000)
Player:
Opponent:
89.16% (G:0.00% B:0.00%)
10.84% (G:0.05% B:0.00%)
Conf.: ± 0.001 (+0.782...+0.784) - [33.6%]
Duration: 39.4 seconds
3.Rollout114/9eq: +0.783 (0.000)
Player:
Opponent:
89.15% (G:0.00% B:0.00%)
10.85% (G:0.05% B:0.00%)
Conf.: ± 0.001 (+0.782...+0.784) - [20.1%]
Duration: 34.9 seconds
4.Rollout114/11 6/4eq: +0.781 (-0.003)
Player:
Opponent:
89.03% (G:0.00% B:0.00%)
10.97% (G:0.07% B:0.00%)
Conf.: ± 0.001 (+0.780...+0.782) - [0.0%]
Duration: 30.8 seconds
5.Rollout115/12 6/4eq: +0.780 (-0.003)
Player:
Opponent:
89.02% (G:0.00% B:0.00%)
10.98% (G:0.07% B:0.00%)
Conf.: ± 0.001 (+0.779...+0.781) - [0.0%]
Duration: 25.8 seconds
6.Rollout115/12 14/12eq: +0.779 (-0.004)
Player:
Opponent:
88.96% (G:0.00% B:0.00%)
11.04% (G:0.04% B:0.00%)
Conf.: ± 0.001 (+0.778...+0.780) - [0.0%]
Duration: 19.0 seconds
7.Rollout115/13 6/3eq: +0.772 (-0.011)
Player:
Opponent:
88.61% (G:0.00% B:0.00%)
11.39% (G:0.06% B:0.00%)
Conf.: ± 0.001 (+0.771...+0.773) - [0.0%]
Duration: 24.2 seconds
8.Rollout114/12 6/3eq: +0.772 (-0.012)
Player:
Opponent:
88.59% (G:0.00% B:0.00%)
11.41% (G:0.07% B:0.00%)
Conf.: ± 0.001 (+0.771...+0.773) - [0.0%]
Duration: 21.4 seconds
9.Rollout17/5 7/4eq: +0.767 (-0.016)
Player:
Opponent:
88.36% (G:0.00% B:0.00%)
11.64% (G:0.61% B:0.01%)
Conf.: ± 0.001 (+0.766...+0.768) - [0.0%]
Duration: 1 minute 01 second
1 5184 Games rolled with Variance Reduction.
Dice Seed: 50783284
Moves: 3-ply, cube decisions: XG Roller






White is Player 2

score: 0
pip: 61
1 point match
pip: 89
score: 0

Blue is Player 1
XGID=-bBBBBCB------AA-------de-:0:0:1:32:0:0:0:1:10

Your position, four checkers off (swing of .017)


1.Rollout17/5 7/4eq: +0.723
Player:
Opponent:
86.14% (G:0.00% B:0.00%)
13.86% (G:0.83% B:0.01%)
Conf.: ± 0.001 (+0.722...+0.724) - [70.7%]
Duration: 57.4 seconds
2.Rollout115/13 14/11eq: +0.722 (-0.001)
Player:
Opponent:
86.10% (G:0.00% B:0.00%)
13.90% (G:0.13% B:0.00%)
Conf.: ± 0.001 (+0.721...+0.723) - [12.5%]
Duration: 38.5 seconds
3.Rollout115/10eq: +0.722 (-0.001)
Player:
Opponent:
86.09% (G:0.00% B:0.00%)
13.91% (G:0.14% B:0.00%)
Conf.: ± 0.001 (+0.720...+0.723) - [8.9%]
Duration: 35.4 seconds
4.Rollout114/9eq: +0.722 (-0.001)
Player:
Opponent:
86.09% (G:0.00% B:0.00%)
13.91% (G:0.14% B:0.00%)
Conf.: ± 0.001 (+0.720...+0.723) - [8.0%]
Duration: 30.0 seconds
5.Rollout114/11 6/4eq: +0.717 (-0.006)
Player:
Opponent:
85.85% (G:0.00% B:0.00%)
14.15% (G:0.13% B:0.00%)
Conf.: ± 0.001 (+0.716...+0.718) - [0.0%]
Duration: 40.6 seconds
6.Rollout115/12 6/4eq: +0.717 (-0.006)
Player:
Opponent:
85.84% (G:0.00% B:0.00%)
14.16% (G:0.14% B:0.00%)
Conf.: ± 0.001 (+0.715...+0.718) - [0.0%]
Duration: 36.8 seconds
7.Rollout115/13 6/3eq: +0.714 (-0.009)
Player:
Opponent:
85.69% (G:0.00% B:0.00%)
14.31% (G:0.25% B:0.00%)
Conf.: ± 0.001 (+0.713...+0.715) - [0.0%]
Duration: 37.8 seconds
1 5184 Games rolled with Variance Reduction.
Dice Seed: 50783284
Moves: 3-ply, cube decisions: XG Roller






White is Player 2

score: 0
pip: 63
1 point match
pip: 86
score: 0

Blue is Player 1
XGID=-bBBBBCB-----B---------ee-:0:0:1:32:0:0:0:1:10

Stronger outfield placement, three checkers off


1.Rollout17/5 7/4eq: +0.785
Player:
Opponent:
89.23% (G:0.00% B:0.00%)
10.77% (G:0.62% B:0.00%)
Conf.: ± 0.001 (+0.784...+0.786) - [63.6%]
Duration: 54.4 seconds
2.Rollout113/11 13/10eq: +0.784 (0.000)
Player:
Opponent:
89.22% (G:0.00% B:0.00%)
10.78% (G:0.06% B:0.00%)
Conf.: ± 0.001 (+0.783...+0.786) - [36.4%]
Duration: 38.6 seconds
3.Rollout113/8eq: +0.779 (-0.005)
Player:
Opponent:
88.97% (G:0.00% B:0.00%)
11.03% (G:0.07% B:0.00%)
Conf.: ± 0.001 (+0.778...+0.781) - [0.0%]
Duration: 31.3 seconds
4.Rollout113/10 6/4eq: +0.776 (-0.009)
Player:
Opponent:
88.79% (G:0.00% B:0.00%)
11.21% (G:0.09% B:0.00%)
Conf.: ± 0.001 (+0.775...+0.777) - [0.0%]
Duration: 30.2 seconds
1 5184 Games rolled with Variance Reduction.
Dice Seed: 50783284
Moves: 3-ply, cube decisions: XG Roller

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