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42 checker play - Variant

Posted By: Nack Ballard
Date: Monday, 15 June 2026, at 4:48 p.m.

In Response To: Position of the Day 06-04-26 Bonus Question - Rollouts (Stick)





White is Player 2

score: 0
pip: 142
Unlimited Game
Jacoby Beaver
pip: 153
score: 0

Blue is Player 1
XGID=-Aa--BCaC---cD--ba-cbb--B-:0:0:1:42:0:0:3:0:10
Original position

1.Rollout113/7* eq: -0.611
Player:
Opponent:
36.36% (G:11.54% B:0.49%)
63.64% (G:26.48% B:2.85%)
Conf.: ± 0.017 (-0.627...-0.594) - [100.0%]
Duration: 1 minute 47 seconds
2.Rollout18/4 6/4eq: -0.665 (-0.054)
Player:
Opponent:
34.42% (G:11.36% B:0.45%)
65.58% (G:22.23% B:1.49%)
Conf.: ± 0.011 (-0.676...-0.654) - [0.0%]
Duration: 1 minute 29 seconds
1 2592 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller

Above is Stick's rollout of the original position.

Below is a cusp variant.

Prior to having seen bot info for either, if you were told that in one of these two positions you should hit and in the other you should make the 4pt, would you have correctly identified which is which?

Nack





White is Player 2

score: 0
pip: 142
Unlimited Game
Jacoby Beaver
pip: 152
score: 0

Blue is Player 1
XGID=-Aa--BCaC---cD--ba-cbb-AA-:0:0:1:42:0:0:3:0:10
Variant: Blue is split to the 23pt

1.Rollout18/4 6/4eq: -0.541
Player:
Opponent:
37.83% (G:12.38% B:0.50%)
62.17% (G:23.63% B:1.15%)
Conf.: ± 0.008 (-0.550...-0.533) - [99.9%]
Duration: 22 minutes 45 seconds
2.Rollout113/7* eq: -0.565 (-0.023)
Player:
Opponent:
37.70% (G:11.60% B:0.54%)
62.30% (G:28.19% B:2.60%)
Conf.: ± 0.012 (-0.576...-0.553) - [0.1%]
Duration: 27 minutes 37 seconds
1 5184 Games rolled with Variance Reduction.
Dice Seed: 35388764
Moves: 3-ply, cube decisions: XG Roller

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