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Othello quizzes revisited *RollOut* Position 1, 2000

Posted By: leobueno
Date: Saturday, 13 August 2011, at 12:40 a.m.

In Response To: Othello quizzes revisited (Timothy Chow)

This took a long time.

I stopped the rollout of the inferior plays manually (JSDs > 5, as I recall).

The score (after 0 games) is: Player_1 0, Player_2 4 (match to 7 points)

Move number 4: Player_2 to play 52

Player_1186


' '1O3X '3X '1X ' '1X5O

'1X1X2O3X4O '2O2X ' ' '

Player_2160

Position ID: OCeC4RSYZ/ABRA Match ID: cInqAAAAIAAE

• Player_2 moves bar/23 22/17*

Cube decision
4-ply cubeless equity +0.242(Money: +0.236)
56.9 21.6 1.1 - 43.1 12.4 0.4
Cubeful equities:
4-ply cubeful prune
1.No double +0.080
2.Double, pass +1.000 +0.920
3.Double, take -0.834 -0.913
Proper cube action:No double, take (49.8%)

Alert: doubtful move ( -0.048)

# Ply Move Equity
1 R bar/20 22/20 +0.184
58.6 21.1 2.1- 41.4 9.0 0.4 +0.240 +0.184
0.1 0.2 0.2- 0.1 0.1 0.0 0.004 0.007
Full cubeful rollout with var.redn.
3558 games, Mersenne Twister dice gen. with seed 929156926 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
• 2 R bar/23 22/17* +0.136 ( -0.048)
56.6 27.0 3.3- 43.4 9.6 0.3 +0.248 +0.136
0.2 0.2 0.2- 0.2 0.1 0.0 0.006 0.009
Full cubeful rollout with var.redn.
3553 games, Mersenne Twister dice gen. with seed 929156926 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
3 R bar/23 13/8 +0.077 ( -0.107)
56.1 22.0 1.9- 43.9 11.7 0.4 +0.170 +0.077
0.3 0.5 0.2- 0.3 0.2 0.1 0.008 0.014
Full cubeful rollout with var.redn.
833 games, Mersenne Twister dice gen. with seed 929156926 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
4 R bar/18 -0.006 ( -0.190)
55.5 20.8 3.1- 44.5 13.0 0.6 +0.124 -0.006
0.4 0.6 0.6- 0.4 0.3 0.1 0.013 0.026
Full cubeful rollout with var.redn.
322 games, Mersenne Twister dice gen. with seed 929156926 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
5 R bar/20 6/4 -0.012 ( -0.196)
54.4 20.4 2.5- 45.6 12.8 0.5 +0.114 -0.012
0.4 0.6 0.5- 0.4 0.4 0.1 0.013 0.024
Full cubeful rollout with var.redn.
321 games, Mersenne Twister dice gen. with seed 929156926 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
6 4 bar/23 6/1 +0.000 ( -0.184)
56.0 19.1 0.8 - 44.0 14.2 0.5
4-ply cubeful prune
7 4 bar/20 13/11 -0.014 ( -0.198)
55.9 20.2 1.2 - 44.1 14.5 0.7
4-ply cubeful prune
8 4 bar/23 8/3* -0.055 ( -0.239)
54.9 21.5 1.5 - 45.1 15.2 1.1
4-ply cubeful prune

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