Difference between revisions of "Edge template V1b"

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(Defense against 1. d5: first 4 moves)
(Defense against 1. d5: possible responses from Blue)
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=== Defense against 1. d5 ===
 
=== Defense against 1. d5 ===
 
+
<div class="toccolours mw-collapsible  mw-collapsed">
 
Red can start like this:
 
Red can start like this:
  
Line 55: Line 55:
 
   coords="hide"
 
   coords="hide"
 
   contents="E *:a1 E *:b1 E *:c1 E *:d1 R e1 E *:i1 E *:j1 E *:k1 E *:l1 E *:m1 E *:n1 E *:a2 E *:b2 E *:c2 E *:d2 R e2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 R 4:g3 E *:n3 E *:a4 E *:b4 R 2:d4 E *:a5 B 3:c5 B 1:d5"
 
   contents="E *:a1 E *:b1 E *:c1 E *:d1 R e1 E *:i1 E *:j1 E *:k1 E *:l1 E *:m1 E *:n1 E *:a2 E *:b2 E *:c2 E *:d2 R e2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 R 4:g3 E *:n3 E *:a4 E *:b4 R 2:d4 E *:a5 B 3:c5 B 1:d5"
 +
  />
 +
 +
Red has this threat:
 +
 +
<hexboard size="6x14"
 +
  coords="hide"
 +
  contents="E *:a1 E *:b1 E *:c1 E *:d1 R e1 E *:i1 E *:j1 E *:k1 E *:l1 E *:m1 E *:n1 E *:a2 E *:b2 E *:c2 E *:d2 R e2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 E +:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 1:e4 E +:f4 E +:g4 E *:a5 B c5 B d5 R 3:e5 E +:f5 R 5:g5 B 4:d6 B 2:e6 E +:f6 E +:g6"
 +
  />
 +
 +
So all these fields need to be considered:
 +
 +
<hexboard size="6x14"
 +
  contents="E *:a1 E *:b1 E *:c1 E *:d1 R e1 E *:i1 E *:j1 E *:k1 E *:l1 E *:m1 E *:n1 E *:a2 E *:b2 E *:c2 E *:d2 R e2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 E +:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 E +:e4 E +:f4 E +:g4 E *:a5 B c5 B d5 E +:e5 E +:f5 E +:g5 E +:d6 E +:e6 E +:f6 E +:g6"
 
   />
 
   />
  
 
To be continued ...
 
To be continued ...
 +
</div>
  
 
=== Defense against 1. d6 ===
 
=== Defense against 1. d6 ===

Revision as of 17:18, 23 May 2016

The template

(From the little golem forum)

Even though the diagram shows two pieces and one of them on the sixth row, it makes sense to say this is a fifth row template with one stone, as the stone on the sixth row plays no role whatsoever in connecting to the bottom. It could be removed and the stone on the fifth row will still be connected to the bottom. It is only shown so there is a possibility to connect to the top too, as without that it would not be of much use in a practical sense.

(Note: As I am writing this I have only seen the claim of this being a valid template on the little golem thread. I have not checked it yet and also not if it is minimal. However, as this came from a very competent player I have no reson to doubt it.)

Defense against intrusions

Red has 3 main threads:

1

using the ziggurat,

1

using III-1-b and

1

using IV-1-d.

For a blocking attempt, Blue has to play on the overlap:

abcdefghijklmn123456

Defense against 1. e3

Yet to come ...

Defense against 1. d5

Red can start like this:

4231

Red has this threat:

13542

So all these fields need to be considered:

abcdefghijklmn123456

To be continued ...

Defense against 1. d6

Red has this line:

28346517

Blue 3, 5 and 7 are forced.

Red has these threats:

13524
132
1

The overlap in which Blue has to play is:

Four of these five possible moves can be analysed in one line. In the following diagram assume Blue has played 1 on any of the fields marked with +:

64532

After Red 2 that group is safely connected to them bottom, now matter which of the pluses Blue chose before.

That leaves only one Blue move to deal with:

76108495213

Note that Red 4 connects to the bottom with IV-2-b.