Difference between revisions of "Template VI1/Intrusion on the 4th row"

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This page is devoted to details on how to [[Defending against intrusions in template VI1|defend against intrusions in template VI]]. This page explores what are the possibilities for Red to defend the template when Blue intrude on the 4th row.
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#REDIRECT [[Edge_template_VI1a#Intrusion_at_e]]
 
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<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4
+
</hex>
+
 
+
Red should move here (or the equivalent mirror-image move at "+"):
+
 
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
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Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3 Pk3
+
</hex>
+
 
+
== Elimination of irrelevant Blue moves ==
+
This gives Red several immediate threats:
+
From III1a:
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Rg5
+
Pg4 Ph4
+
Ph5
+
Pf6 Pg6 Ph6
+
Pe7 Pf7 Pg7 Ph7
+
</hex>
+
 
+
From III1a again:
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Rg5
+
Pg4 Ph4
+
Pf5
+
Pe6 Pf6 Pg6
+
Pd7 Pe7 Pf7 Pg7
+
</hex>
+
 
+
From III1b :
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Rg5
+
Pg4 Ph4
+
Pf5 Ph5
+
Pe6 Pf6 Pg6 Ph6
+
Pd7 Pe7 Pg7 Ph7
+
</hex>
+
 
+
From IV1a:
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Rg4
+
Pf4
+
Pd5 Pe5 Pf5 Pg5 Ph5
+
Pc6 Pd6 Pe6 Pf6 Pg6 Ph6
+
Pb7 Pc7 Pd7 Pe7 Pf7 Pg7 Ph7
+
</hex>
+
 
+
From IV1b:
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Rg4
+
Pf4 Ph4
+
Pd5 Pe5 Pf5 Pg5 Ph5 Pi5
+
Pc6 Pd6 Pe6    Pg6 Ph6 Pi6
+
Pb7 Pc7 Pd7 Pe7 Pf7 Pg7 Ph7 Pi7
+
</hex>
+
 
+
The intersection of all of these leaves:
+
<hex>
+
R7 C14 Q1
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Pg4
+
  Pg5
+
  Pg6
+
Pe7 Pg7
+
</hex>
+
 
+
== Specific defense ==
+
So we must deal with each of these responses.  (Which will not be too hard!)
+
 
+
=== Bg4 ===
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
N:on Bg4 Rh4 Bg6 Rh5
+
</hex>
+
And now either
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
Bg4 Rh4 Bg6 Rh5
+
N:on Bh6 Rj5
+
Pk3 Pi5
+
</hex>
+
 
+
or
+
 
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
Bg4 Rh4 Bg6 Rh5
+
N:on Bh7 Rh6 Bg7 Rj6 Bi6 Rj5
+
Pk3 Pi5
+
</hex>
+
 
+
=== Bg5 ===
+
<hex>
+
R7 C14 Q1
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
N:on Bg5 Rf4
+
</hex>
+
Threatening:
+
<hex>
+
R7 C14 Q1
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Bg5 Rf4
+
            Pe4
+
      Pc5 R4d5 Pe5
+
  Pb6 Pc6 Pd6
+
Pa7 Pb7 Pc7 Pd7
+
</hex>
+
<hex>
+
R7 C14 Q1
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Bg5 Rf4
+
      Pe5 Pf5
+
      R4e6
+
    Pd7 Pe7
+
</hex>
+
 
+
<hex>
+
R7 C14 Q1
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Bg5 Rf4
+
      Pd5 R4e5 Pf5
+
  Pc6 Pd6 Pe6 Pf6
+
Pb7 Pc7    Pe7 Pf7
+
</hex>
+
So the only hope for Blue lies in the intersection of the threats, Be5, but it is unsufficient:
+
 
+
<hex>
+
R7 C14 Q1
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
Bg5 Rf4
+
N:on Be5 Rf5 Be7 Rf6 Bf7 Rg6 Bg7 Rj5
+
Pk3 Pi5
+
</hex>
+
=== Bg6 ===
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
N:on Bg6 Rg5 Bf6 Rh5
+
Pe7
+
</hex>
+
 
+
3 could be played at + with the same effect; in any case
+
now either
+
 
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
Bg6 Rg5 Bf6 Rh5
+
N:on Bh6 Rj5
+
Pi5 Pk3
+
</hex>
+
 
+
or
+
 
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
Bg6 Rg5 Bf6 Rh5
+
N:on Bh7 Rh6 Bg7 Rj6 Bi6 Rj5
+
Pk3 Pi5
+
</hex>
+
 
+
=== Be7 ===
+
Either this
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
N:on Be7 Rg5 Bg6 Rh5 Bh6 Rj5
+
Pi5 Pk3
+
 
+
</hex>
+
 
+
or a minor variation
+
 
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
N:on Be7 Rg5 Bg6 Rh5 Bh7 Rh6 Bg7 Rj6 Bi6 Rj5
+
Pi5 Pk3
+
 
+
</hex>
+
 
+
=== Bg7 ===
+
 
+
<hex>
+
R7 C14 Q0
+
1:BBBBBBBBBRBBBBB
+
Sa2 Sb2 Sc2 Sd2 Se2 Sf2 Sg2 Sh2 Rj2 Sl2 Sm2 Sn2
+
Sa3 Sb3 Sc3 Sd3 Se3 Sf3 Sm3 Sn3
+
Sa4 Sb4 Sc4 Sd4 Sn4
+
Sa5 Sb5
+
Sa6
+
 
+
Bi4 Rh3
+
 
+
N:on Bg7 Rg5 Bf6 Rh6 Bh7 Rj6 Bi6 Rj5
+
Pi5 Pk3
+
 
+
</hex>
+
 
+
[[category:edge templates]]
+

Latest revision as of 01:39, 30 April 2021