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Beginner Exercise 19 Solution
KarlKnechtel: The eye at a is already secured. White needs to make one in the space around b.
First, white chases black around. With any other black responses, white makes a sagari at any time to seal off the second eye.
White 5 threatens capture of more than enough EyeSpace, so black must capture.
White 7 threatens to capture again so black fills in, but it's a connect-and-die - white 9 finishes the job since black can't escape.
splice: Small technicality. Karl's comment: "White 5 threatens capture of more than enough EyeSpace[...]". As far as I can read, anything less will leave white with one eye. To wit...
So playing until the black stone is hit is not more than enough eyespace, it's actually just enough. At least, the way I see it :)
unkx80: In the diagram titled "Not enough", white 3 is wrong, but black 4 is also wrong. White 5 lives.
Black 4 should be played here. Subsequently, if white a, black throw-in at 2 and the eye becomes false.
This way white has just enough space to make a second eye.
This is a copy of the living page "Beginner Exercise 19 Solution" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |