Endgame Problem 2 / Solution

Sub-page of EndgameProblem2

"Zero points sente" vs "Two points sente"

"Zero points sente"


"Two points sente"


The quotes have been taken from the source of this problem.[1]

Hope you have gotten it correct!



Bill: Yes. Probably neither one is sente.

Miai value analysis


Compared to the solution diagram, W1 here makes 7 points in reverse sente. The core on the 3 lower lines is 18. In the solution diagram it's 11. The question is, is a Black move sente?


If White allows B5 here and Black employs the same tesuji at B7 then 7 more points go to waste. Assuming B11 at W2, A and C might end up split between them, which grows White loss by a small margin. The score here would be 3-ish.

This makes for a game tree

                 12.5 (5.5)
                /    \
               7 (4) 18
              / \
             3   11

and the move is not sente.

Endgame Problem 2 / Solution last edited by Dieter on June 19, 2023 - 16:48
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