Re: [Bug-gnubg] Cubeful equities in bearoff

[Joern Thyssen]

On Sun, Dec 01, 2002 at 02:35:10PM -0500, address@hidden wrote
> That's excellent. 
> Up to how many checkers and how many points does the cubeful bearoff database 
> work?

The new 5MB dataase (http://users.skynet.be/bk228456/gnubg_ts0.exe)
covers 6 chequers on 6 points.

There is source code for a program that can generate larger databases
(I'm don't think it's included in the windows builds).

So far I've managed to generate 8 chequers database, although I had some
trouble generating the 9 chequer database. In principle the program can
generate an arbitrary one. However, the size increases very fast:

*Chequers*     *Points*       *Number of positions**Size/MB*
6              6              853,776        6
7              6              2,944,656      22
8              6              9,018,009      68
9              6              25,050,025     191
10             6              64,128,064     489
11             6              153,165,376    1,168
12             6              344,622,096    2,629
13             6              736,145,424    5,616
14             6              1,502,337,600  11,461
15             6              2,944,581,696  22,465

I guess the program needs some tuning...

Jørn