Difference between revisions of "Wall"

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A '''wall''' is a [[group]] of [[piece]]s forming a straight line inside the [[board]]. Walls are strategically strong because they can serve as edges within the board, allowing [[edge template]]s to be played with the walls as support.
 
A '''wall''' is a [[group]] of [[piece]]s forming a straight line inside the [[board]]. Walls are strategically strong because they can serve as edges within the board, allowing [[edge template]]s to be played with the walls as support.
  
A popular way to create a wall is to [[ladder]] in the "wrong direction". The example below shows the lower part of a board:
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A common way to create a wall is to [[ladder]] in the "wrong direction". Consider this example:
 +
<hexboard size="5x10"
 +
  coords="none"
 +
  edges="bottom"
 +
  contents="R A:e2 c4 B d2 f2 d4 E x:d3 y:e3"
 +
  />
  
<hex>R5 C10 Ve2 Hf2 Hd4 Vc4</hex>
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[[Red (player)|Red]] could easily connect A to the bottom [[edge]] by playing at x. But instead, she plays at y and ladders to the right, giving the following position:
  
While [[Red (player)|Red]] could easily connect two the [[bottom edge]] by means of her leftmost red piece, instead she ladders to the right, giving the following position:
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<hexboard size="5x10"
 +
  coords="none"
 +
  edges="bottom"
 +
  contents="R A:e2 c4 B d2 f2 d4 E x:d3 R 1:e3 B 2:e4 R 3:f3 B 4:f4 R 5:g3 B 6:g4 R 7:h3 B 8:h4 R 9:i3 B 10:i4"
 +
  />
  
<hex>R5 C10 Ve2 Hf2 Hd4 Vc4  Ve3 He4 Vf3 Hf4 Vg3 Hg4 Vh3 Hh4 Vi3 Hi4</hex>
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''Now'' Red plays at x to connect the wall to the edge. The newly created wall can come in handy as play goes on near the top of the board (not shown here).
 
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''Now'' Red connects the pieces to the left. The newly created wall can come in handy as play goes on near the top of the board (not shown here).
+
  
 
Note that this illustrates suboptimal play by [[Blue (player)|Blue]]. Since Red already has a connection to the bottom, Blue should not play the ladder allowing Red to set up a wall.
 
Note that this illustrates suboptimal play by [[Blue (player)|Blue]]. Since Red already has a connection to the bottom, Blue should not play the ladder allowing Red to set up a wall.
  
A wall can contain one-[[hex (board element)|hex]] [[hole]]s without affecting its function, as long as the whole wall is a single [[group]]. The holes may be [[empty hex|empty]] or [[occupied hex|occupied]] by the opponent.
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A wall can contain one-cell holes without affecting its function, as long as the whole wall is a single [[group]]. The holes may be empty or occupied by the opponent.
  
<hex>R5 C8 Vb3 Vc3 Vd4 Ve3 Ve4 Vf4 Hf3 Vg3 Vg3</hex>
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<hexboard size="5x8"
 +
  coords="none"
 +
  edges="bottom"
 +
  contents="R b3 c3 d4 e3 e4 f4 B f3 R g3 g3"
 +
  />
  
 
== See also ==
 
== See also ==
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[[Rope]]
 
[[Rope]]
  
 
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[[category: Strategy]]
[[category:strategy]]
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[[category: Definition]]

Latest revision as of 22:32, 19 May 2022

A wall is a group of pieces forming a straight line inside the board. Walls are strategically strong because they can serve as edges within the board, allowing edge templates to be played with the walls as support.

A common way to create a wall is to ladder in the "wrong direction". Consider this example:

Axy

Red could easily connect A to the bottom edge by playing at x. But instead, she plays at y and ladders to the right, giving the following position:

Ax13579246810

Now Red plays at x to connect the wall to the edge. The newly created wall can come in handy as play goes on near the top of the board (not shown here).

Note that this illustrates suboptimal play by Blue. Since Red already has a connection to the bottom, Blue should not play the ladder allowing Red to set up a wall.

A wall can contain one-cell holes without affecting its function, as long as the whole wall is a single group. The holes may be empty or occupied by the opponent.

See also

Rope