Endgame Tesuji 2
This seemingly innocent sequence contains a mistake. can be improved due to the presence of the marked Black stone:
This one is correct.
The result to be expected is as follows:
After the exchange /, playing on with at would be gote for White.
Hence Black can expect to get the sequence to in sente. This is two points better for Black than in the original diagram.
- Antone: I guess the idea is that white's next followup would be gote, consider this diagram where white goes with at E19, comparing it with the first diagram on this page the difference is one point of territory lost for black (and one more prisoner for white) but black gets possibly larger compensation plaing elsewhere two times with and .
One final question is whether in the first diagram becomes a mistake, given the good reply at , or whether hane is better. It is close, but is still a little better.