Kanazawa Problem 56 / Solution

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The first move is probably the hardest one. Why not 2-2 or 4-2 ? We'll investigate that later.


Actually, this problem looks harder than it is. When looking at it from White's standpoint, it is quite easy to find the correct move on the spot.

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Reference diagram

White can enter Black's EyeSpace from two sides: at a or b. Black has to find a move which protects against both. Let's analyze some failures first.

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Failure 1

Simply closing off at 1 is not good. White 8 makes miai of a and b.

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Failure 2

If Black closes off the other side, White breaks in from the first. Up to 10, Black makes a (slightly modified) door group which is dead.

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Other candidates

Here a and b also fail to protect against White 2. So let's investigate the last candidate, c.

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Failure 3

Black 1 fails to protect against the jump to 2. His eye space is sufficiently reduced. The rest of the moves are for reference.


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Variation 1

If White plays 2 or a, Black protects at 3 and makes such nice shape that it isn't even necessary for Black to respond to White 4. We'll analyze this in KanazawaDerivedProblem56.


Go to Problem57


This is a copy of the living page "Kanazawa Problem 56 / Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.
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