Difference between revisions of "Ziggurat"
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| − | The ''' | + | The '''ziggurat''', also known as '''edge template IIIa''' or '''template 4-3-2''', is one of the most basic non-trivial [[edge template]]s. The [[carrier]] is very small so this template occurs in real games quite often. The small size of the carrier makes it efficient as a threat of [[template reduction]] when building other templates. It also appears sometimes in the middle of the board as an [[interior template]]. |
| − | This | + | This ziggurat can be used to prove very easily that a move in the center of a size 5 board is winning. |
<hexboard size="5x5" | <hexboard size="5x5" | ||
coords="hide" | coords="hide" | ||
contents="R c3 S blue:area(c3,e1,b1,b3) red:area(c3,a5,d5,d3)" | contents="R c3 S blue:area(c3,e1,b1,b3) red:area(c3,a5,d5,d3)" | ||
/> | /> | ||
| + | |||
| + | == Defending the ziggurat == | ||
| + | |||
| + | Red has two main threats by playing at "A" or "B": | ||
| + | <hexboard size="3x4" | ||
| + | coords="hide" | ||
| + | edges="bottom" | ||
| + | visible="area(a3,d3,d1,c1)" | ||
| + | contents="R c1 R A:b2 S a3 b3 c1 b2" | ||
| + | /> | ||
| + | <hexboard size="3x4" | ||
| + | coords="hide" | ||
| + | edges="bottom" | ||
| + | visible="area(a3,d3,d1,c1)" | ||
| + | contents="R c1 R B:d2 S c1 d1 c2 d2 c3 d3" | ||
| + | /> | ||
| + | These moves lead to easy direct connection. Because there is no common empty [[hex (board element)|hex]] used in both threats, Blue cannot prevent Red from connecting to the bottom. | ||
== See also == | == See also == | ||
| − | *Some [[puzzles]] directly involve the ziggurat! | + | * Some [[puzzles]] directly involve the ziggurat! |
| − | *[[Defending against intrusions in template 1-IIIa]] | + | * [[Defending against intrusions in template 1-IIIa]] |
| − | *[[Edge templates everybody should know]] | + | * [[Edge templates everybody should know]] |
| − | *[[Edge templates with one stone]] | + | * [[Edge templates with one stone]] |
| + | * [[Multiple threats]] | ||
[[category:edge templates]] | [[category:edge templates]] | ||
[[category:Basic Strategy]] | [[category:Basic Strategy]] | ||
Revision as of 00:51, 8 December 2020
The ziggurat, also known as edge template IIIa or template 4-3-2, is one of the most basic non-trivial edge templates. The carrier is very small so this template occurs in real games quite often. The small size of the carrier makes it efficient as a threat of template reduction when building other templates. It also appears sometimes in the middle of the board as an interior template.
This ziggurat can be used to prove very easily that a move in the center of a size 5 board is winning.
Defending the ziggurat
Red has two main threats by playing at "A" or "B":
These moves lead to easy direct connection. Because there is no common empty hex used in both threats, Blue cannot prevent Red from connecting to the bottom.
See also
- Some puzzles directly involve the ziggurat!
- Defending against intrusions in template 1-IIIa
- Edge templates everybody should know
- Edge templates with one stone
- Multiple threats
