How to use this page
- Select the kind of position you want to generate from the dropdown menu
- Click "New Position" until you see a position that looks fun to play
- Set up the position together with your opponent (see below for how to play on OGS)
- Black plays first, and normal komi applies! (6.5 for Japanese rules, 7.0 for Chinese rules)
How to play on OGS
To save you the steps of downloading and uploading the SGF file to OGS, you can use these links instead:
Simply open the corresponding review, scroll down to a random position in the game tree, and click "Fork game" in the sidebar to create a challenge. (Note that you need to be signed in to OGS for the fork option to be available)
How the positions are generated
This tool works by selecting from a pre-generated list of positions. This means that if you keep hitting "New Position", you will eventually see some repeated positions! New positions will be added over time, so there should be no danger of running out of fresh positions to play.
The script that generates the positions simply plays random moves and then queries KataGo to see if the score evaluation is within ±0.3 points of equal (using Chinese rules and 7.0 komi).
The "Joseki" positions are from the OGS joseki dictionary (thanks to lightvector for providing these!).
Please leave feedback or bug reports on GitHub or in this forum thread.