Monday, March 28, 2011

checker play #021

is Player 2

score: 6
pip: 125
7 point match
Crawford
pip: 121
score: 3

is Player 1
XGID=--aBBCBbB---aCa---b-bbbb-A:0:0:1:41:3:6:1:7:10
to play 41

8pt se nipošto ne smije razbiti. Dakle, 'prirodni' 13/9 ili sigurni 5/1? Ostaviti direktan šut dok se vodi u trci ne izgleda primamljivo, ali crni, uz acepoint, ima otvoren i 6pt, odakle bijeli, ako završi na baru, kontrolira igru. Osim toga kako pokriti slot nakon 5/1? Taj blot je loš za trku i može biti izbačen u nezgodnom trenutku.  Crawford je, gdje nema kjuba i gdje se igra može dobiti samo sa checkerima, pa ih treba postavljati tamo gdje će donijeti najviše dobiti. Ne treba se bojati gammona, jer oni ništa ne znače protivniku.

White must not break 8pt. Points are assets and assets are everything so choice is between 'natural' 13/9 and 'safe' 5/1. Leaving direct shot when you are ahead in race doesn't look appetizing but black has  two opened points in his homeboard. After hit white can enter from the bar at 6pt in order to control outfield. Also, after 'safe' 5/1 white has to cover slot on acept. He has no spares in zone and has to break 8pt to cover with 7s. That blot is also bad for race and can be hit in wrong moment. It is Crawford game, when there is no cube and where you could win with checkers only, so white should put them on those places where they bring most. He should not worry about gammons which are useless for his opponent.

1.Rollout1Bar/24 13/9eq: +0,189
Player:
Opponent:
49,12% (G:20,20% B:1,44%)
50,88% (G:17,32% B:1,68%)
Conf: ± 0,007 (+0,182...+0,196)
Duration: 12 minutes 15 seconds
2.Rollout1Bar/24 5/1eq: +0,138 (-0,051)
Player:
Opponent:
48,60% (G:16,24% B:0,44%)
51,40% (G:13,81% B:1,01%)
Conf: ± 0,006 (+0,132...+0,144)
Duration: 11 minutes 30 seconds
3.Rollout1Bar/24 8/4eq: -0,032 (-0,221)
Player:
Opponent:
40,29% (G:15,88% B:0,80%)
59,71% (G:20,98% B:1,85%)
Conf: ± 0,007 (-0,039...-0,025)
Duration: 12 minutes 35 seconds
4.Rollout1Bar/24 6/2* eq: -0,103 (-0,292)
Player:
Opponent:
36,83% (G:15,68% B:0,80%)
63,17% (G:31,12% B:3,54%)
Conf: ± 0,006 (-0,109...-0,097)
Duration: 13 minutes 55 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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