Life In 19x19

Hi
I'm happy to annonce the Large Board network is now available, please enjoy !
https://katagotraining.org/extra_networks/

If you want to generate a game above 25x25, Sabaki and several other GUI don't work, But you can either use the katago match option, or Q5Go also works up to 50x50 at least ...

A void 50x50 match game at 100 visits!

A 50x50 game with 1K visits and a close result: White+2!

On 33x33 board, some games of KataGo's network trained on large boards vs latest standard kata1 network (kata1-s8446), with H5 and 10 times less visits :-)
it would be interesting to play with this network. Can you upload it?
See above my post and the "next steps" : I'm releasing it in the coming ...

It's not an error, it's a choice made by lightvector to generate more diversity in handicap games: the handicap stones are placed "randomly".

On 33x33 board, some games of KataGo's network trained on large boards vs latest standard kata1 network (kata1-s8446), with H5 and 10 times less visits

Here is the first game I generated on a 50x50 games played with 10K visits!
It is between the two most recent networks trained on large boards (which are quite comparable in strength).

My bad, the OpenCL version was not the good one, I modified the 7zip file (and the OCL version is now called OCL50): it should work hopefully!

is the Katago version available for download now for boards larger than 29x29 and 28b nets?
I'm using the TRT version, which works. I did not test the other versions recently, not sure anymore.
They should be "clean", but please check again before using them.
And IIRC, I compiled them for 50x50 or ...

Some more info: this "large board" KataGo network has been trained in selfplay since late 2023. Initial training used an 18b network (based on the latest kata1 run available 18b at that time).
In September 2024, I switched to 28b and immediately noticed a significant strength boost on all board ...

Important precision: it's a specific 28b KataGo model I trained for more than one year on large boards, up to 50x50, starting from the latest available kata1 (I began with the latest 18b end of 2023, then switched to 28b in 2024).
More precisions during the weekend : -)

Hi

You'll find here a 50x50 selfplay game by KataGo: enjoy!

KataGo now plays well on this board size. While there are still occasional scoring errors (particularly for boards larger than 40x40), overall performance is solid :)

I’ll share more games in the coming weeks and plan to release the ...

To use a recent KataGo network, Lizzie is good but too old I'm afraid, but there is an alternative & up-to-date version called Lizzie Yzy. I don't use it but heard it is quite good, you can try it: https://github.com/yzyray/lizzieyzy/releases
Otherwise, Sabaki + KataGo works well, that's what I'm ...

Dear all,

I'm happy to share the result of 11-months of training a new KataGo version to (probably) solve Igo Hatsuyoron 120 problem!!!

This is probably the most difficult Go problem ever created, see wikipedia for the historical context: https://en.wikipedia.org/wiki/Igo_Hatsuy%C5%8Dron

This ...

at first glance, the 20b network on a 52x52 board plays differently, not like in the previous version of KataGo
That's quite unexpected, I think there shouldn't be any difference in playing style from the new engine... There were some changes regarding symmetries and also the search, but that ...