Monday, April 4, 2011

checker play #025

is Player 2

score: 6
pip: 100
7 point match
pip: 84
score: 4

is Player 1
XGID=-BBDBBA-----b----bbebB-b--:1:-1:1:51:4:6:0:7:10
to play 51

Iskoristiti peticu, te krenuti s ankore pri 18 pipseva prednosti, preskočiti blokadu i izložiti se gomili šuteva uz snažniju kuću ili igrati sigurno čekajući bolja vremena za bijeg? Siguran potez donosi više pobjeda, ali manje gammona od rizičnijeg koji provocira izmjenu udaraca. 20k dug rollout kaže kako nećete pogriješiti odaberete li bilo koji od dva kandidata. Referentne pozicije gdje dva različita plana igre ostvaruju jednak equity su zgodne za vježbu. Izmijenite poziciju neznatno i vidjet ćete koji faktori utječu na odabir.

Should white need to break anchor and expose himself to billion shots and use five to jump over blockade with one checker when is ahead in race or he should play safe and wait better time for escape? Safe move wins more plain wins but less gammons then 21/16 which provokes shot exchanges. 20k long RO says how we can't make mistake whatever we choose between these two moves. Referent positions when two different game plans brings same equity are nice for exercise. You can change such positions and then you can find which position's features have more impact on particular choice.

1.Rollout16/1 3/2eq: -0,137
Player:
Opponent:
40,83% (G:2,33% B:0,15%)
59,17% (G:6,88% B:0,09%)
Conf: ± 0,003 (-0,140...-0,134)
Duration: 3 minutes 19 seconds
2.Rollout121/16 6/5eq: -0,139 (-0,002)
Player:
Opponent:
38,76% (G:4,31% B:0,26%)
61,24% (G:8,17% B:0,16%)
Conf: ± 0,003 (-0,142...-0,136)
Duration: 3 minutes 26 seconds
3.Rollout121/15eq: -0,153 (-0,016)
Player:
Opponent:
37,66% (G:4,68% B:0,23%)
62,34% (G:9,64% B:0,27%)
Conf: ± 0,004 (-0,157...-0,149)
Duration: 3 minutes 36 seconds
4.Rollout121/16 3/2eq: -0,168 (-0,032)
Player:
Opponent:
37,09% (G:4,49% B:0,23%)
62,91% (G:9,59% B:0,19%)
Conf: ± 0,004 (-0,172...-0,164)
Duration: 2 minutes 59 seconds
1 2592 Games rolled with Variance Reduction.
Moves and cube decisions: 3 ply
eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

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