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Two comments about the 2016 Othello quiz rollouts

Posted By: Timothy Chow
Date: Tuesday, 6 December 2016, at 12:07 a.m.

In Response To: Two comments about the 2016 Othello quiz rollouts (Timothy Chow)

Thanks to Michael and Stick for getting the forums back up and running!

I did a rollout of problem 10 in this year's Othello Quiz with stronger settings. The top play remains on top, but the difference between the top two plays is significantly smaller than it is in any other Othello Quiz problem that I can remember.





White is Player 2

score: 3
pip: 124
7 point match
pip: 147
score: 2

Blue is Player 1
XGID=-b--B-DBAAA-bB----bc-bbbB-:0:0:1:32:2:3:0:7:10
Blue to play 32

1.Rollout110/8 6/3eq: -0.274
Player:
Opponent:
46.01% (G:12.03% B:0.73%)
53.99% (G:24.33% B:5.12%)
Conf.: ± 0.007 (-0.281...-0.267) - [100.0%]
Duration: 12 hours 39 minutes
2.Rollout18/5 7/5eq: -0.311 (-0.037)
Player:
Opponent:
45.04% (G:12.51% B:0.64%)
54.96% (G:25.41% B:5.14%)
Conf.: ± 0.006 (-0.317...-0.305) - [0.0%]
Duration: 11 hours 50 minutes
1 5184 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 4-ply, cube decisions: XG Roller+
Search interval: Large

eXtreme Gammon Version: 2.19.208.pre-release, MET: Kazaross XG2


3-ply/XGR/Normal:





White is Player 2

score: 3
pip: 124
7 point match
pip: 147
score: 2

Blue is Player 1
XGID=-b--B-DBAAA-bB----bc-bbbB-:0:0:1:32:2:3:0:7:10
Blue to play 32

1.Rollout110/8 6/3eq: -0.282
Player:
Opponent:
46.03% (G:12.10% B:0.80%)
53.97% (G:24.91% B:5.70%)
Conf.: ± 0.009 (-0.292...-0.273) - [100.0%]
Duration: 59 minutes 03 seconds
2.Rollout18/5 7/5eq: -0.306 (-0.024)
Player:
Opponent:
45.13% (G:12.57% B:0.69%)
54.87% (G:25.63% B:5.08%)
Conf.: ± 0.008 (-0.314...-0.298) - [0.0%]
Duration: 52 minutes 18 seconds
3.Rollout113/11 13/10eq: -0.329 (-0.047)
Player:
Opponent:
44.26% (G:11.82% B:0.86%)
55.74% (G:24.16% B:5.37%)
Conf.: ± 0.009 (-0.338...-0.320) - [0.0%]
Duration: 53 minutes 58 seconds
4.Rollout213/8eq: -0.351 (-0.069)
Player:
Opponent:
44.48% (G:11.72% B:0.80%)
55.52% (G:25.53% B:5.35%)
Conf.: ± 0.017 (-0.368...-0.335) - [0.0%]
Duration: 11 minutes 58 seconds
5.Rollout28/5 6/4eq: -0.361 (-0.079)
Player:
Opponent:
43.27% (G:10.87% B:1.37%)
56.73% (G:28.83% B:14.72%)
Conf.: ± 0.028 (-0.388...-0.333) - [0.0%]
Duration: 14 minutes 37 seconds
6.Rollout210/8 9/6eq: -0.388 (-0.105)
Player:
Opponent:
42.59% (G:12.22% B:0.67%)
57.41% (G:19.73% B:3.87%)
Conf.: ± 0.017 (-0.405...-0.370) - [0.0%]
Duration: 12 minutes 03 seconds
7.Rollout210/7 6/4eq: -0.403 (-0.121)
Player:
Opponent:
41.73% (G:11.58% B:0.78%)
58.27% (G:22.43% B:4.21%)
Conf.: ± 0.016 (-0.420...-0.387) - [0.0%]
Duration: 12 minutes 53 seconds
8.Rollout29/7 8/5eq: -0.411 (-0.128)
Player:
Opponent:
42.08% (G:11.03% B:0.52%)
57.92% (G:24.41% B:4.36%)
Conf.: ± 0.015 (-0.425...-0.396) - [0.0%]
Duration: 13 minutes 00 second
9.Rollout210/5eq: -0.459 (-0.177)
Player:
Opponent:
42.90% (G:9.86% B:1.16%)
57.10% (G:30.34% B:17.30%)
Conf.: ± 0.028 (-0.486...-0.431) - [0.0%]
Duration: 14 minutes 11 seconds
10.Rollout210/7 9/7eq: -0.527 (-0.245)
Player:
Opponent:
38.77% (G:10.22% B:0.55%)
61.23% (G:20.96% B:4.38%)
Conf.: ± 0.019 (-0.546...-0.508) - [0.0%]
Duration: 12 minutes 09 seconds
11.Rollout213/10 9/7eq: -0.528 (-0.246)
Player:
Opponent:
40.33% (G:9.94% B:0.90%)
59.67% (G:25.52% B:11.10%)
Conf.: ± 0.025 (-0.553...-0.503) - [0.0%]
Duration: 12 minutes 52 seconds
12.Rollout210/7 8/6eq: -0.537 (-0.255)
Player:
Opponent:
38.65% (G:10.69% B:0.71%)
61.35% (G:20.87% B:3.95%)
Conf.: ± 0.016 (-0.553...-0.521) - [0.0%]
Duration: 11 minutes 27 seconds
13.Rollout29/4eq: -0.564 (-0.282)
Player:
Opponent:
38.77% (G:10.44% B:0.95%)
61.23% (G:22.87% B:7.49%)
Conf.: ± 0.025 (-0.589...-0.539) - [0.0%]
Duration: 11 minutes 13 seconds
1 5184 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

2 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.19.208.pre-release, MET: Kazaross XG2

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