Difference between revisions of "Ladder puzzle 1/Solution"
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Roland Illig (Talk | contribs) m (→Wrong: typo) |
Roland Illig (Talk | contribs) (Another try for proving that f6 doesn't work. The last one was wrong.) |
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| − | == Correct == | + | == Correct: e5 == |
<hex>R8 C8 Q1 Vc6 Vd5 Vd4 Ve3 Vh4 Hd6 Hb8 Hc1 He4 Hg3 N:on Ve5 He6 Vf5 Hf6 Vg7</hex> | <hex>R8 C8 Q1 Vc6 Vd5 Vd4 Ve3 Vh4 Hd6 Hb8 Hc1 He4 Hg3 N:on Ve5 He6 Vf5 Hf6 Vg7</hex> | ||
| − | == Wrong == | + | == Wrong: f6 == |
| − | + | <hex>R8 C8 Q1 Vc6 Vd5 Vd4 Ve3 Vh4 Hd6 Hb8 Hc1 He4 Hg3 N:on Vf6 He7</hex> | |
| − | + | 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. | |
Revision as of 18:35, 2 December 2007
Correct: e5
Wrong: f6
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.
