Edge template IV3b - Revision history

Demer: minimized template

2020-12-16T06:50:29Z

minimized template

Selinger: Converted to new hexboard diagrams

2020-12-11T18:14:40Z

Converted to new hexboard diagrams

Richyfourtytwo: Created page with "The template: If the middle red piece is removed, t..."

2016-05-17T17:14:02Z

Created page with "The template: <hexboard size="4x6" coords="hide" contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 E *:d2 E *:a3" /> If the middle red piece is removed, t..."

New page

The template:

<hexboard size="4x6"
coords="hide"
contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 E *:d2 E *:a3"
/>

If the middle red piece is removed, the template stays valid, as long as the two remaining stones are connected to each others in some other way.

(From: [http://www.drking.org.uk/hexagons/hex/templates.html www.drking.org.uk])

Red has this threat:

<hexboard size="4x6"
contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 E *:d2 E +:e2 E +:f2 E *:a3 R 1:e3 E +:d4 E +:e4"
/>

For trying to block the connection Blue has to play on the 5 fields used by that threat.

Moves 1-3 (f2, e3, e4):

These 3 moves can be covered in a single line of play by Red:

<hexboard size="4x6"
coords="hide"
contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 R 4:c2 E *:d2 B 3:e2 B 1:f2 E *:a3 R 2:d3 B 1:e3 B 1:e4"
/>

Red 4 is connected to the bottom by [[Edge_template_III2e|III-2-e]].

Move 4 (e2):

<hexboard size="4x6"
coords="hide"
contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 R 2:c2 E *:d2 B 1:e2 E +:f2 E *:a3 R 4:c3 E +:d3 R 6:e3 B 3:b4 B 5:c4"
/>

Red 6 is connected to the top by the two fields marked with +.

Move 5 (d4):

<hexboard size="4x6"
coords="hide"
contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 E +:c2 E *:d2 E *:a3 R 4:c3 E +:d3 R 2:e3 B 1:d4 B 3:e4"
/>

Red 4 is connected to the top by the two fields marked with +.

== See also ==

[[category:edge templates]]

@@ Line 1: / Line 1: @@
 Template IV3-b is a 4th row [[edge template]] with 3 stones.
-<hexboard size="4x6"
+<hexboard size="4x5"
-   coords="hide"
+  coords="hide"
-   edges="bottom"
+  edges="bottom"
-   visible="-area(a1,a3,c1)"
+  visible="-(a1 a2 a3 b1)"
-   contents="R d1 R e1 R f1 S d2"
+  contents="R c1 d1 e1 S d2"
-   />
+  />
 The shaded cell is not part of the template and can be occupied by Blue.
 If the middle red piece is removed, the template stays valid, as long as the two remaining stones are connected to each other in some other way.
-(From: [http://www.drking.org.uk/hexagons/hex/templates.html www.drking.org.uk])
+(mirror-image is from [http://www.drking.org.uk/hexagons/hex/templates.html www.drking.org.uk])
 == Defending the template ==
@@ Line 17: / Line 17: @@
 Red has this threat:
-<hexboard size="4x6"
+<hexboard size="4x5"
-   coords="hide"
+  coords="hide"
-   edges="bottom"
+  edges="bottom"
-   visible="-area(a1,a3,c1)"
+  visible="-(a1 a2 a3 b1)"
-   contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 S d2 E +:e2 E +:f2 E *:a3 R e3 E +:d4 E +:e4"
+  contents="E +:(a4 b2 b4 c2) R c1 d1 e1 b3 S d2"
-   />
+  />
-For trying to block the connection Blue has to play on the 5 fields used by that threat.
+For trying to block the connection Blue has to play on the 5 cells used by that threat.
-<hexboard size="4x6"
+<hexboard size="4x5"
-   coords="hide"
+  coords="hide"
-   edges="bottom"
+  edges="bottom"
-   visible="-area(a1,a3,c1)"
+  visible="-(a1 a2 a3 b1)"
-   contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 S d2 E y:e2 E x:f2 E *:a3 E x:e3 E z:d4 E x:e4"
+  contents="E x:(b2 b3 a4) y:c2 z:b4 R c1 d1 e1 S d2"
-   />
+  />
 If Blue moves in any of the 3 cells marked x, Red has the same response:
-<hexboard size="4x6"
+<hexboard size="4x5"
-   coords="hide"
+  coords="hide"
-   edges="bottom"
+  edges="bottom"
-   visible="-area(a1,a3,c1)"
+  visible="-(a1 a2 a3 b1)"
-   contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 R 4:c2 S d2 B 3:e2 B 1:f2 E *:a3 R 2:d3 B 1:e3 B 1:e4"
+  contents="B 1:(b2 b3 a4) 3:c2 R c1 d1 e1 2:c3 4:e2 S d2"
-   />
+  />
 Red 4 is connected to the bottom by [[Edge_template_III2e|template III2-e]].
@@ Line 46: / Line 46: @@
 If Blue moves at y:
-<hexboard size="4x6"
+<hexboard size="4x5"
-   coords="hide"
+  coords="hide"
-   edges="bottom"
+  edges="bottom"
-   visible="-area(a1,a3,c1)"
+  visible="-(a1 a2 a3 b1)"
-   contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 R 2:c2 S d2 B 1:e2 E +:f2 E *:a3 R 4:c3 E +:d3 R 6:e3 B 3:b4 B 5:c4"
+  contents="B 1:c2 3:b2 5:d4 R c1 d1 e1 2:b3 4:e2 6:d3 S d2"
-   />
+  />
-Red 6 is connected to the top by double threat at the two fields marked "+".
+Red 2 is a [[Ladder escape|ladder escape]] for the ladder formed by Red 6.
 If Blue moves at z:
-<hexboard size="4x6"
+<hexboard size="4x5"
-   coords="hide"
+  coords="hide"
-   edges="bottom"
+  edges="bottom"
-   visible="-area(a1,a3,c1)"
+  visible="-(a1 a2 a3 b1)"
-   contents="E *:a1 E *:b1 E *:c1 R d1 R e1 R f1 E *:a2 E *:b2 E +:c2 S d2 E *:a3 R 4:c3 E +:d3 R 2:e3 B 1:d4 B 3:e4"
+  contents="B 1:b4 3:a4 R c1 d1 e1 2:b3 4:d3 E +:c3 +:e2 S d2"
-   />
+  />
-Red 4 is connected to the top by double threat at the two fields marked "+".
+Red 4 is connected to the top by double threat at the two cells marked "+".
 [[category:edge templates]]