Difference between revisions of "Edge template IV2j"
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| − | + | Template IV2-j is a 4th row [[edge template]] with 2 stones. | |
<hexboard size="4x5" | <hexboard size="4x5" | ||
| − | coords="hide" | + | coords="hide" |
| − | + | edges="bottom" | |
| + | visible="-area(a1,a4,b3,c1)" | ||
| + | contents="R ↑:e1 c2" | ||
/> | /> | ||
| + | Red can connect the stone marked "↑" to the edge. Red cannot guarantee to connect the other stone. | ||
| + | |||
(From: [http://www.drking.org.uk/hexagons/hex/templates.html www.drking.org.uk]) | (From: [http://www.drking.org.uk/hexagons/hex/templates.html www.drking.org.uk]) | ||
| + | |||
| + | == Defending the template == | ||
Red has two threats: | Red has two threats: | ||
<hexboard size="4x5" | <hexboard size="4x5" | ||
| − | coords="hide" | + | coords="hide" |
| − | + | edges="bottom" | |
| + | visible="-area(a1,a4,b3,c1)" | ||
| + | contents="E +:d1 R ↑:e1 R c2 E +:d2 E +:c3 R A:c3 E +:b4 E +:c4 " | ||
/> | /> | ||
| Line 18: | Line 26: | ||
<hexboard size="4x5" | <hexboard size="4x5" | ||
| − | coords="hide" | + | coords="hide" |
| − | + | edges="bottom" | |
| + | visible="-area(a1,a4,b3,c1)" | ||
| + | contents="R ↑:e1 R c2 E +:d2 E +:e2 R B:d3 E +:c4 E +:d4" | ||
/> | /> | ||
| Line 25: | Line 35: | ||
<hexboard size="4x5" | <hexboard size="4x5" | ||
coords="hide" | coords="hide" | ||
| − | contents="E *:a1 E *:b1 E *:c1 E +:d1 R e1 E *:a2 E *:b2 E *:b3 R c2 B 1:d2 R 2:e2 E *:a3 R 4:c3 E +:d3 E *:a4 B 3:d4" | + | edges="bottom" |
| + | visible="-area(a1,a4,b3,c1)" | ||
| + | contents="E *:a1 E *:b1 E *:c1 E +:d1 R ↑:e1 E *:a2 E *:b2 E *:b3 R c2 B 1:d2 R 2:e2 E *:a3 R 4:c3 E +:d3 E *:a4 B 3:d4" | ||
/> | /> | ||
Red 4 is connected to the bottom and also to the top by one of the two fields marked "+". | Red 4 is connected to the bottom and also to the top by one of the two fields marked "+". | ||
| Line 32: | Line 44: | ||
<hexboard size="4x5" | <hexboard size="4x5" | ||
coords="hide" | coords="hide" | ||
| − | contents="E *:a1 E *:b1 E *:c1 R e1 E *:a2 E *:b2 R c2 E *:a3 E *:b3 E *:a4 B 1:c4 R 2:c3 B 3:b4 R 4:e3" | + | edges="bottom" |
| + | visible="-area(a1,a4,b3,c1)" | ||
| + | contents="E *:a1 E *:b1 E *:c1 R ↑:e1 E *:a2 E *:b2 R c2 E *:a3 E *:b3 E *:a4 B 1:c4 R 2:c3 B 3:b4 R 4:e3" | ||
/> | /> | ||
Revision as of 17:45, 10 December 2020
Template IV2-j is a 4th row edge template with 2 stones.
Red can connect the stone marked "↑" to the edge. Red cannot guarantee to connect the other stone.
(From: www.drking.org.uk)
Defending the template
Red has two threats:
and
To attempt blocking, Blue must play in one of the two cells where these threats overlap. If Blue plays in upper one of these cells, Red responds as follows:
Red 4 is connected to the bottom and also to the top by one of the two fields marked "+".
If Blue plays in the other overlap, Red responds as follows:
