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Bot Battle #154 -Variants

Posted By: Nack Ballard
Date: Monday, 3 August 2026, at 3:20 p.m.

In Response To: Bot Battle #154 Rollout (Jason Lee)

		White is Professional score: 8 pip: 155 9 point match Crawford pip: 164 score: 3 Blue is Hive Mind
XGID=-aa---E-C--AdD---c-d-b-AA-:0:0:1:52:3:8:1:9:10
Original position

1.	Rollout1	13/11 13/8	eq: +0.010
	Player: Opponent: 43.35% (G:11.28% B:0.58%) 56.65% (G:21.66% B:2.99%) Conf.: ± 0.002 (+0.008...+0.012) - [100.0%] Duration: 2 hours 55 minutes
2.	Rollout1	13/11 6/1*	eq: +0.004 (-0.006)
	Player: Opponent: 43.21% (G:11.03% B:0.44%) 56.79% (G:22.47% B:3.92%) Conf.: ± 0.002 (+0.002...+0.006) - [0.0%] Duration: 3 hours 26 minutes
3.	Rollout1	23/18 13/11	eq: -0.001 (-0.011)
	Player: Opponent: 43.68% (G:9.88% B:0.57%) 56.32% (G:23.06% B:2.86%) Conf.: ± 0.002 (-0.003...+0.001) - [0.0%] Duration: 2 hours 07 minutes
4.	Rollout1	23/16	eq: -0.057 (-0.067)
	Player: Opponent: 41.28% (G:9.26% B:0.52%) 58.72% (G:25.24% B:3.97%) Conf.: ± 0.002 (-0.059...-0.055) - [0.0%] Duration: 1 hour 51 minutes
1 7776 Games rolled with Variance Reduction. Moves: 4-ply, cube decisions: XG Roller+ Search interval: Huge

Above is Jason's rollout of the original position.

Below are contrasting variants. Altogether, three positions representing three best plays.

Nack

		White is Player 2 score: 8 pip: 157 11 point match pip: 164 score: 3 Blue is Player 1
XGID=-aa---E-C--AdD---c-db--AA-:0:0:1:52:3:8:0:11:10
Variant 1: White's 5pt is changed to her 4pt

1.	Rollout1	23/18 13/11	eq: -0.123
	Player: Opponent: 42.20% (G:9.54% B:0.42%) 57.80% (G:22.14% B:1.68%) Conf.: ± 0.008 (-0.131...-0.116) - [100.0%] Duration: 1 hour 22 minutes
2.	Rollout1	13/11 13/8	eq: -0.141 (-0.018)
	Player: Opponent: 41.27% (G:10.55% B:0.38%) 58.73% (G:20.66% B:1.77%) Conf.: ± 0.007 (-0.148...-0.134) - [0.0%] Duration: 1 hour 10 minutes
3.	Rollout2	13/11 6/1*	eq: -0.160 (-0.037)
	Player: Opponent: 40.72% (G:10.42% B:0.39%) 59.28% (G:20.88% B:2.42%) Conf.: ± 0.014 (-0.174...-0.146) - [0.0%] Duration: 16 minutes 35 seconds
1 5184 Games rolled with Variance Reduction. Dice Seed: 92061717 Moves: 3-ply, cube decisions: XG Roller 2 1296 Games rolled with Variance Reduction. Dice Seed: 92061717 Moves: 3-ply, cube decisions: XG Roller

		White is Player 2 score: 8 pip: 152 11 point match pip: 164 score: 3 Blue is Player 1
XGID=-aa---E-C--AcD-a-c-d-b-AA-:0:0:1:52:3:8:0:11:10
Variant 2: A White 13pt spare is on her 10pt

1.	Rollout1	13/11 6/1*	eq: -0.116
	Player: Opponent: 42.05% (G:10.80% B:0.42%) 57.95% (G:22.49% B:2.36%) Conf.: ± 0.008 (-0.124...-0.108) - [60.9%] Duration: 1 hour 01 minute
2.	Rollout1	23/18 13/11	eq: -0.118 (-0.002)
	Player: Opponent: 42.27% (G:10.44% B:0.53%) 57.73% (G:25.16% B:2.03%) Conf.: ± 0.007 (-0.125...-0.110) - [39.1%] Duration: 1 hour 01 minute
3.	Rollout2	13/11 13/8	eq: -0.144 (-0.028)
	Player: Opponent: 41.35% (G:10.67% B:0.49%) 58.65% (G:22.89% B:1.94%) Conf.: ± 0.010 (-0.154...-0.134) - [0.0%] Duration: 28 minutes 01 second
1 5184 Games rolled with Variance Reduction. Dice Seed: 17113297 Moves: 3-ply, cube decisions: XG Roller 2 2592 Games rolled with Variance Reduction. Dice Seed: 17113297 Moves: 3-ply, cube decisions: XG Roller

Messages In This Thread

• Bot Battle #154
  Jason Lee -- Friday, 24 July 2026, at 5:58 p.m.
  • Bot Battle #154
    John O'Hagan -- Friday, 24 July 2026, at 7:33 p.m.
  • Not gammon go
    Bob Koca -- Friday, 24 July 2026, at 9:13 p.m.
  • Bot Battle #154
    ah_clem -- Saturday, 25 July 2026, at 2:40 a.m.
  • Bot Battle #154 Rollout
    Jason Lee -- Sunday, 26 July 2026, at 12:41 p.m.
    • Bot Battle #154 -Variants
      Nack Ballard -- Monday, 3 August 2026, at 3:20 p.m.