TsumegoFromGames73/Attempts

Sub-page of TsumegoFromGames73
[Diagram]

white is alive?

xela: The white stones on the right seem to be alive, with eyes at a and b. Black can try the eye-stealing tesuji of c, but white replies at d and lives.

[Diagram]

ko

xela: The best continuation I can find is B1 and B3, threatening to capture white's centre group. Then B5 makes ko.

[Diagram]

variation: also ko

If white tries to avoid the ko by playing W1, then B2 causes a shortage of liberties that makes B4 possible.

(If white plays W5 at B6, then B6 at W5, white a, black b.)

LukeNine45: W5 at B8 leaves two ways to make another eye, no?

xela: Um, (looks sheepish), yes.

[Diagram]

order is important

If black tries B1 and B3 in the reverse order, white can defend at W2 then connect with the tesuji at W4.

[Diagram]

variation: Black lives?

pwaldron: How about this?

a and b are miai for life.


xela: I keep oscillating between "look, black can make a ko this way!" and "no, white is alive, why did black resign?"


This is a copy of the living page "TsumegoFromGames73/Attempts" at Sensei's Library.
(OC) 2009 the Authors, published under the OpenContent License V1.0.
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