Difference between revisions of "A3 escape trick"
From HexWiki
(rv) |
(move numbering + cat. + see also) |
||
| Line 2: | Line 2: | ||
The term '''a3 escape trick''' denotes the fact that though a red piece on a3 is not part of an [[edge template]] to the [[Top edge|top]], it can still be useful as a [[ladder escape]], when handled correctly. | The term '''a3 escape trick''' denotes the fact that though a red piece on a3 is not part of an [[edge template]] to the [[Top edge|top]], it can still be useful as a [[ladder escape]], when handled correctly. | ||
| + | |||
| + | == Example == | ||
Consider the following position: | Consider the following position: | ||
| − | <hex>R8 C8 Q1 | + | <hex>R8 C8 Q1 |
| + | Hg2 Hh2 | ||
| + | Va3 Vg3 | ||
| + | He4 | ||
| + | He5 Vf5 | ||
| + | Ve6 | ||
| + | </hex> | ||
The a3 escape trick consists of laddering to e3 (making a three-hex [[gap]] between the ladder and a3) and then [[connecting]] a3 through a [[bridge]]: | The a3 escape trick consists of laddering to e3 (making a three-hex [[gap]] between the ladder and a3) and then [[connecting]] a3 through a [[bridge]]: | ||
| − | <hex>R8 C8 Q1 | + | <hex>R8 C8 Q1 |
| + | H4e2 H2f2 Hg2 Hh2 | ||
| + | Va3 V3e3 V1f3 Vg3 | ||
| + | V5b4 He4 | ||
| + | He5 Vf5 | ||
| + | Ve6 | ||
| + | </hex> | ||
[[Blue (player)|Blue]]'s only working response is d3, to which [[Red (player)|Red]] responds with another bridge: | [[Blue (player)|Blue]]'s only working response is d3, to which [[Red (player)|Red]] responds with another bridge: | ||
| − | <hex>R8 C8 Q1 | + | <hex>R8 C8 Q1 |
| + | He2 Hf2 Hg2 Hh2 | ||
| + | Va3 H1d3 Ve3 Vf3 Vg3 | ||
| + | Vb4 Sd4 He4 | ||
| + | V2c5 He5 Vf5 | ||
| + | Sd6 Ve6 | ||
| + | </hex> | ||
No matter what Blue plays Red can either connect with the ladder or directly to the [[Bottom edge|bottom]]. | No matter what Blue plays Red can either connect with the ladder or directly to the [[Bottom edge|bottom]]. | ||
| Line 20: | Line 40: | ||
This escape does not always work, depending on the [[Board size|size of the board]] and the pieces already on it. | This escape does not always work, depending on the [[Board size|size of the board]] and the pieces already on it. | ||
| + | |||
| + | == See also == | ||
| + | |||
| + | * [[a3 opening]] | ||
| + | * [[Ladder]]s | ||
| + | |||
| + | [[category:ladder]] | ||
Revision as of 11:53, 1 November 2008
- The title given to this article is incorrect due to technical limitations. The correct title is a3 escape trick.
The term a3 escape trick denotes the fact that though a red piece on a3 is not part of an edge template to the top, it can still be useful as a ladder escape, when handled correctly.
Example
Consider the following position:
The a3 escape trick consists of laddering to e3 (making a three-hex gap between the ladder and a3) and then connecting a3 through a bridge:
Blue's only working response is d3, to which Red responds with another bridge:
No matter what Blue plays Red can either connect with the ladder or directly to the bottom.
Blue can also play c3 instead of d3 but the outcome is the same.
This escape does not always work, depending on the size of the board and the pieces already on it.
