Difference between revisions of "Ladder escape template"

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A '''ladder escape template''' is a [[pattern]] which can be used as a [[ladder escape]], that is a way of connecting a [[ladder]] to an [[edge]]. For example a stone on a second row will escape a second row ladder. Let's see this in action.
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A '''ladder escape template''' is a [[pattern]] that can be used as a [[ladder escape]], that is a way of connecting a [[ladder]] to an [[edge]]. For example a stone on a second row will escape a second row ladder. Let's see this in action.
  
 
<hexboard size="2x8"
 
<hexboard size="2x8"
 
   coords="hide"
 
   coords="hide"
 +
  edges="bottom"
 
   contents="R a1 R 2:b1 R 4:c1 R 6:d1 R 8:e1 R h1 B 1:a2 B 3:b2 B 5:c2 B 7:d2 B 9:e2"
 
   contents="R a1 R 2:b1 R 4:c1 R 6:d1 R 8:e1 R h1 B 1:a2 B 3:b2 B 5:c2 B 7:d2 B 9:e2"
 
   />
 
   />
  
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When red's ladder reaches the second row stone on the right, red will be able to connect to the bottom edge, as follows:
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When Red's ladder reaches the second row stone on the right, Red will be able to connect to the bottom edge, as follows:
 
<hexboard size="2x8"
 
<hexboard size="2x8"
 
   coords="hide"
 
   coords="hide"
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   contents="R a1 R b1 R c1 R d1 R e1 R 1:f1 R 3:g1 R h1 B a2 B b2 B c2 B d2 B e2 B 2:f2"
+
  edges="bottom"
 +
   contents="R a1 R b1 R c1 R d1 R e1 R 10:f1 R 12:g1 R h1 B a2 B b2 B c2 B d2 B e2 B 11:f2"
 
   />
 
   />
  
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There is a technical page on the [[theory of ladder escapes]]; this is not necessary for beginners, who just need to recognise basic ladder escapes and how to use them.
 
There is a technical page on the [[theory of ladder escapes]]; this is not necessary for beginners, who just need to recognise basic ladder escapes and how to use them.
  
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Below, '''*''' stands for template carrier, '''+''' stands for projected ladder path.
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Below, the template's carrier is shown in gray, and the projected ladder path in pink.  
  
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== [[Second row|Row-2]] ladders ==  
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== Second row ladders ==  
  
 
All of the common edge templates are valid. For instance:
 
All of the common edge templates are valid. For instance:
  
 
===[[Template II]]===
 
===[[Template II]]===
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<hex> R3 C8
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<hexboard size="3x8"
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  Vb2 Vc2 Vd2 Pe2 Pf2 Pg2 Vh2
+
  coords="none"
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Ha3 Hb3 Hc3 Hd3 Pe3 Pf3 Pg3 Sh3</hex>
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  edges="bottom"
 +
  contents="R a2 b2 c2 d2 B a3 b3 c3 d3 S red:(a2--g2 a3--g3) gray:(g3 h2 h3) R h2"
 +
  />
  
 
===[[Template IVa]]===
 
===[[Template IVa]]===
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<hex> R4 C11
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<hexboard size="4x11"
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                            Vi1 Sj1
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  coords="none"
−
                      Sg2 Sh2 Si2 Sj2 Sk2
+
  edges="bottom"
−
  Vb3 Vc3 Pd3 Pe3 Pf3 Sg3 Sh3 Si3 Sj3 Sk3
+
  contents="R a3 b3 c3 B a4 b4 c4 S red:(a3--f3 a4--f4) gray:area(i1,g2,e4,k4,k2,j1) R i1"
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Ha4 Hb4 Hc4 Pd4 Pe4 Pf4 Sg4 Sh4 Si4 Sj4 Sk4</hex>
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  />
  
  
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== [[Third row|Row-3]] ladders==
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== Third row ladders==
  
 
Templates [[Template II|II]], [[Template IIIa|IIIa]], and [[Template IVa|IVa]] are valid.
 
Templates [[Template II|II]], [[Template IIIa|IIIa]], and [[Template IVa|IVa]] are valid.
  
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== [[Fourth row|Row-4]] ladders==
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== Fourth row ladders==
  
 
===[[Template IIIa]]===
 
===[[Template IIIa]]===
 
Template IIIa is valid.
 
Template IIIa is valid.
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<hex> R5 C7
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<hexboard size="5x7"
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  Vb2 Vc2 Vd2
+
  coords="none"
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Ha3 Hb3 Hc3 Hd3    Vf3 Sg3
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  edges="bottom"
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                Se4 Sf4 Sg4
+
  contents="R a2 b2 c2 B a3 b3 c3 S red:(a2--f2,a3--e3) gray:area(f3,d5,g5,g3) R f3"
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              Sd5 Se5 Sf5 Sg5</hex>
+
  />
  
 
===[[Template IVa]]===
 
===[[Template IVa]]===
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Also template IVa is valid if you can [[double bridge]] to the [[escape piece]] as follows.
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Also template IVa is valid if you can double [[bridge]] to the escape piece as follows.
 +
<hexboard size="6x9"
 +
  coords="none"
 +
  edges="bottom"
 +
  contents="R a3 b3 c3 d3 B a4 b4 c4 d4 S red:(a3--f3 a4--d4 e2--g2) gray:area(g3,e4,c6,i6,i4,h3) E *:f2 R g3"
 +
  />
  
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<hex>R6 C9 Vb3 Vc3 Vd3 Sf2 Vg3 Ha4 Hb4 Hc4 Hd4</hex>
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[[Red]] can [[jumping|jump]] ahead to the escape template by playing at the marked cell.
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+
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[[Red]] can [[jumping|jump]] ahead to the escape template by playing at the marked [[cell]].
+
  
 
== External links ==
 
== External links ==

Revision as of 05:19, 7 December 2020

A ladder escape template is a pattern that can be used as a ladder escape, that is a way of connecting a ladder to an edge. For example a stone on a second row will escape a second row ladder. Let's see this in action.

246813579

When Red's ladder reaches the second row stone on the right, Red will be able to connect to the bottom edge, as follows:

101211

Edge templates can often be used as ladder escape templates and most of the examples below will look familiar to people who know their edge templates.

There is a technical page on the theory of ladder escapes; this is not necessary for beginners, who just need to recognise basic ladder escapes and how to use them.

Below, the template's carrier is shown in gray, and the projected ladder path in pink.

Second row ladders

All of the common edge templates are valid. For instance:

Template II

Template IVa


Third row ladders

Templates II, IIIa, and IVa are valid.

Fourth row ladders

Template IIIa

Template IIIa is valid.

Template IVa

Also template IVa is valid if you can double bridge to the escape piece as follows.

Red can jump ahead to the escape template by playing at the marked cell.

External links

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