Difference between revisions of "Edge template VI2a"

Revision as of 18:05, 11 June 2009

Let us first see what possibilities Red has if he moves first.

There are two obvious options:

In both diagrams the possible intrusion points are marked by (+). So we only have to consider the intersection of the intrusion points. They are:

If Blue blocks at E5 then Red plays F3, reducing to Template IVb

Likewise if blue blocks at F5:

Blue has a few options:

Red's G3 piece is connected to the top via F3 or H2.

Here Red has created a Ladder escape fork. If blue blocks the ladder Red plays at D3.

And Red has connected. If blue choose to play at E6 instead of E5:

Red threatens to connect via D4. Blue must respond in one of the marked hexs.

The H4 piece is connected to the bottom with template III-1-a, and is connected to the top in two non-overlapping ways:

and

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 Likewise if blue blocks at F5:
 <hex>R6 C10 Vg1 Vh1 Sa1 Sa2 Sa3 Sa4 Sa5 Sb1 Sb2 Sb3 Sb4 Sc1 Sc2 Sc3 Sd1 Sd2 Se1 Sj1 Sj2 Sj3 B1f5 R2g3 Pf3 Ph3 Pd4 Pe4 Pf4 Pg4 Ph4 Pi4 Pc5 Pd5 Pe5 Pg5 Ph5 Pi5 Pb6 Pc6 Pd6 Pe6 Pf6 Pg6 Ph6 Pi6</hex>
+== Intrusion at G2 ==
+<hex>R6 C10 Vg1 Vh1 Sa1 Sa2 Sa3 Sa4 Sa5 Sb1 Sb2 Sb3 Sb4 Sc1 Sc2 Sc3 Sd1 Sd2 Se1 Sj1 Sj2 Sj3 B1g2 R2f2</hex>
+Blue has a few options:
+=== Block at E4 ===
+<hex>R6 C10 Vg1 Vh1 Sa1 Sa2 Sa3 Sa4 Sa5 Sb1 Sb2 Sb3 Sb4 Sc1 Sc2 Sc3 Sd1 Sd2 Se1 Sj1 Sj2 Sj3 Bg2 Rf2 B1e4 R2g3</hex>
+Red's G3 piece is connected to the top via F3 or H2.
+<hex>R6 C10 Vg1 Vh1 Sa1 Sa2 Sa3 Sa4 Sa5 Sb1 Sb2 Sb3 Sb4 Sc1 Sc2 Sc3 Sd1 Sd2 Se1 Sj1 Sj2 Sj3 Bg2 Rf2 Be4 Rg3 B1g4 R2f4 B3e6 R4c5</hex>
+Here Red has created a [[Ladder escape fork]]. If blue blocks the ladder Red plays at D3.
+=== Block at D5 ===
+<hex>R6 C10 Vg1 Vh1 Sa1 Sa2 Sa3 Sa4 Sa5 Sb1 Sb2 Sb3 Sb4 Sc1 Sc2 Sc3 Sd1 Sd2 Se1 Sj1 Sj2 Sj3 Bg2 Rf2 B1d5 R2e4 B3e5 R4g4 B5f4 R6h2</hex>
+And Red has connected. If blue choose to play at E6 instead of E5:
+<hex>R6 C10 Vg1 Vh1 Sa1 Sa2 Sa3 Sa4 Sa5 Sb1 Sb2 Sb3 Sb4 Sc1 Sc2 Sc3 Sd1 Sd2 Se1 Sj1 Sj2 Sj3 Bg2 Rf2 Bd5 Re4 B1e6 R2e5 B3d6 R4g5 B5f5 R6g4 B7f4 R8h2</hex>
 == Intrusion at E6 ==