Difference between revisions of "Ladder puzzle 1/Solution"

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(Another try for proving that f6 doesn't work. The last one was wrong.)
m (category -> ladder puzzle)
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This looks very strong, but Blue can still defend at e7, which is a ladder breaker and threatens a connection at the lower side.
 
This looks very strong, but Blue can still defend at e7, which is a ladder breaker and threatens a connection at the lower side.
 
Since Blue has another threat at e5, this is enough for winning.
 
Since Blue has another threat at e5, this is enough for winning.
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[[category:ladder puzzle]]

Revision as of 12:30, 12 December 2007

Correct: e5

abcdefgh1234567813245

Wrong: f6

abcdefgh1234567812

The stone at f6 is a ladder breaker for the ladder starting at c7, and it also threatens to connect via f5. This looks very strong, but Blue can still defend at e7, which is a ladder breaker and threatens a connection at the lower side. Since Blue has another threat at e5, this is enough for winning.