Difference between revisions of "Ladder escape fork"
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A [[Multiple threat|forking move]] which creates a [[ladder escape]]. | A [[Multiple threat|forking move]] which creates a [[ladder escape]]. | ||
| + | == Example == | ||
| − | + | In the following position, Red has no [[edge template]]. | |
| + | <hex>R7 C7 Q1 | ||
| + | |||
| + | Va2 Hb2 Vf2 Vg2 | ||
| + | Va3 Hc3 | ||
| + | Va4 He4 | ||
| + | Va5 Hb5 Hd5 | ||
| + | Hg6 | ||
| + | |||
| + | </hex> | ||
| + | |||
| + | The only option seems to be a [[ladder]]. | ||
| + | <hex>R7 C7 Q1 | ||
| + | |||
| + | Va2 Hb2 Vf2 Vg2 | ||
| + | Va3 Hc3 | ||
| + | Va4 He4 | ||
| + | Va5 Hb5 Hd5 | ||
| + | V1a6 V3b6 Hg6 | ||
| + | H2a7 H4b7 | ||
| + | </hex> | ||
| + | |||
| + | However, pushing too much the ladder is useless, and it actually enables Blue to win. | ||
| + | |||
| + | <hex>R7 C7 Q1 | ||
| + | |||
| + | Va2 Hb2 Vf2 Vg2 | ||
| + | Va3 Hc3 | ||
| + | Va4 He4 | ||
| + | Va5 Hb5 Hd5 | ||
| + | Va6 Vb6 V1c6 V3d6 V5e6 Sf6 Hg6 | ||
| + | Ha7 Hb7 H2c7 H4d7 H6e7 Sf7 | ||
| + | </hex> | ||
| + | |||
| + | Red needs the two pieces at the top right hand-corner of the board. Red pushes the ladder just enough to use a '''ladder escape fork'''. This pivot piece threatens to connect to the top group and acts as a [[ladder escape]] as well. | ||
| + | |||
| + | <hex>R7 C7 Q1 | ||
| + | |||
| + | Va2 Hb2 Vf2 Vg2 | ||
| + | Va3 Hc3 | ||
| + | Va4 He4 Sf4 | ||
| + | Va5 Hb5 Hd5 | ||
| + | Va6 Vb6 V1c6 Sd6 V3e6 Hg6 | ||
| + | Ha7 Hb7 H2c7 | ||
| + | </hex> | ||
| + | |||
| + | == See also == | ||
| + | |||
| + | [[Foiling ladder escapes]] | ||
| + | |||
| + | [[category:ladder]] | ||
| + | [[category:intermediate Strategy]] | ||
Revision as of 00:14, 1 November 2008
A forking move which creates a ladder escape.
Example
In the following position, Red has no edge template.
The only option seems to be a ladder.
However, pushing too much the ladder is useless, and it actually enables Blue to win.
Red needs the two pieces at the top right hand-corner of the board. Red pushes the ladder just enough to use a ladder escape fork. This pivot piece threatens to connect to the top group and acts as a ladder escape as well.
