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21S-55 DMP

Posted By: Nack Ballard
Date: Monday, 24 May 2010, at 11:02 p.m.

In Response To: 21S-55 DMP (David Rockwell)


2O ' ' ' '5X '3X ' '1X5O

1X1X ' ' '5O '3O ' ' '4X

21S-55


For 13/3 8/3 6/1*, I use H, the primary definition of which is to Hit loose. The other three 5s can be assumed as obviously best (within the confines of already having defined your play as hitting loose). By the way, this was a popular play in the 70s (at virtually any score), when experts loathed making their ace point.

That makes your nacbrac

21S-55 d[A P0.8 H9.5 N11] 5k

... meaning that at the "d" score (dmp), A (Attack, 8/3(2) 6/1*(2)) is best, P (Point, 13/3(2)) is -.0008, H (Hit, 13/3 8/3 6/1*) is -.0095, and N (Near, 13/8(2) 6/1*(2)) is -.011, after 5k (i.e., 5000+) trials.

For reference, the four plays are diagrammed below, in the order of strength indicated in David's 5k supremo GnuBG (DMP) rollout:


2O ' ' ' '5X '3X ' '1X5O

2O1X2O ' '3O '1O ' ' '4X

Blue played A (best)



2O ' ' ' '5X '3X ' '1X3O

1X1X2O ' '5O '3O ' ' '4X

Blue played P (-.0008)



2O ' ' ' '5X '3X ' '1X4O

1O1X2O ' '4O '2O ' ' '4X

Blue played H (-.0095)



2O ' ' ' '5X '3X ' '1X3O

2O1X ' ' '3O '5O ' ' '4X

Blue played N (-.011)


Nack

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