Difference between revisions of "Template VI1/Intrusion on the 3rd row"

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m (No time to fix but at least this is now flagged as incorrect.)
(Fixed 3 diagrams.)
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Sa6
 
Sa6
  
Bh5 MR Mi5 [[#Third-row_followup:_i4|Pi4]] [[#Third-row_followup:_j3_(stub)|Pj3]]
+
Bh5 Mi5 Pi4 Pj3
 
</hex>
 
</hex>
  
 
The Red 1 hex is connected to the bottom, and threatens to connect to the top through
 
The Red 1 hex is connected to the bottom, and threatens to connect to the top through
 
either one of the "+" hexes.  Thus these are the only important incursions.  An incursion to the right of the  
 
either one of the "+" hexes.  Thus these are the only important incursions.  An incursion to the right of the  
number 1 hex is important only in connection with the two indicated here, and will be seen in the treatement
+
number 1 hex is important only in connection with the two indicated here. We consider each of the two incursions below.
below transposed into the sequel.
+
  
 
== Third-row followup: i4 ==
 
== Third-row followup: i4 ==
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Sa6
 
Sa6
  
Bh5 MR Mi5 Mi4 Mk3  
+
Bh5 Mi5 Mi4 Mk3  
 
Pj4    Pl4
 
Pj4    Pl4
 
  Pj5
 
  Pj5
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Sa6
 
Sa6
  
Bh5 MR Mi5 Mj3
+
Bh5 Mi5 Mj3
 
</hex>
 
</hex>
  
 
{{stub}}
 
{{stub}}
 
[[category:edge templates]]
 
[[category:edge templates]]

Revision as of 13:51, 8 September 2020

This article deals with a special case in defending against intrusions in template VI1, namely the intrusion on the 3rd that is not eliminated by sub-templates threats. NOTE THAT THIS PAGE IS NOT CORRECT; THE SUGGESTED MOVE FOR RED IS A LOSING MOVE AND BLUE CAN RESPOND BY PLAYING ON THE SECOND ROW DIRECTLY UNDER THE TWO STONES; THIS BREAKS THE CONNECTION.

Basic situation

Red should go here:

1

The Red 1 hex is connected to the bottom, and threatens to connect to the top through either one of the "+" hexes. Thus these are the only important incursions. An incursion to the right of the number 1 hex is important only in connection with the two indicated here. We consider each of the two incursions below.

Third-row followup: i4

321

Figuring out the Must-play region

Red threatens to play at "+" points above, with these templates:


Edge template IV1a

We need only consider the intersection of these templates.

Incursion at j5

214635

Incursion at j6

21

Incursion at h7

435621

Third-row followup: j3 (stub)

21