Getting KataGo to solve tsumego is an interesting game! Often, if you put a life and death problem in a corner and leave the rest of the board empty, KataGo will just tell you that the first move in an empty corner is bigger. The challenge is to construct a whole-board position where the tsumego is hotter than anything else. But it's worse than that. Even if you can persuade it to pick the "right" corner, KataGo will suggest different moves depending on the whole-board context.
Does anyone have tips for this kind of analysis?
Here's an example from the Hitachi tsumego.
Solution
-- and indeed this is where KataGo also gets stuck.
is atari. This is where 
comes into play.Alternative variation
, capturing three stones. Often it will suggest that white should tenuki, but there's the option of living later on.I've constructed three full-board positions:
- Balanced: black can win if and only if black kills the top left group.
- Ahead: black can win without killing (but killing is still presumably the best move)
- Behind: killing makes the game close, and is still the best option, but white is ahead
Note: I'm still on KataGo 1.3.2 with a 20-block network, too lazy to upgrade at the moment! Please post here if you get different results with newer versions.
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hitachi-10int_black_wins.sgf [186 Bytes]
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hitachi-10int_black_loses.sgf [187 Bytes]
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hitachi-10int.sgf [175 Bytes]
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