Support for other board sizes than 19x19

[wensdong]

@gcp

Could you please point out where I can set the board to 9x9, so that I do some fast experiments?

Regards,

[gcp]

9x9 is not supported. The design of the policy head in the AlphaGo Zero neural network is specific to 19x19.

It's possible to modify the source and design a new head of course, but 9x9 support needs changes all over the source code because 19x19 and 361 are hardcoded in many places.

I welcome patches that make the program more generic but I have zero interest in doing work for non 19x19 boards myself.

[gooooloo]

I make some modification to allow 9x9 playing in my fork https://github.com/gooooloo/leela-zero/tree/9x9. It is still under testing so bugs can be expected. Anyone interested is welcome to play around with that, and any feedback/bugfix is welcome.

[gcp]

Nice!

[gcp]

I'll leave this issue open because the question comes up a lot and we can point people to your branch or perhaps merge back the changes at some point.

[Mardak]

This was fixed / made trivial with #928