Difference between revisions of "Edge template V1b"
(→... 5. e6: simplifying the explanation by referring to Tom's move) |
(→Defense against 1. e3) |
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Line 15: | Line 15: | ||
== Defense against intrusions == | == Defense against intrusions == | ||
− | Red has 3 main | + | Red has 3 main threats: |
<hexboard size="6x14" | <hexboard size="6x14" | ||
Line 46: | Line 46: | ||
=== Defense against 1. e3 === | === Defense against 1. e3 === | ||
− | + | Details yet to come... | |
=== Defense against 1. d5 === | === Defense against 1. d5 === | ||
− | |||
Red can start like this: | Red can start like this: | ||
Line 57: | Line 56: | ||
/> | /> | ||
+ | Continuation: | ||
+ | |||
+ | <div class="toccolours mw-collapsible mw-collapsed"> | ||
Red has this threat: | Red has this threat: | ||
Line 72: | Line 74: | ||
==== ... 5. f3 ==== | ==== ... 5. f3 ==== | ||
− | + | <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 B 1:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:e4 E *:a5 B c5 B d5" | ||
+ | /> | ||
+ | |||
+ | Red has 2 threats: | ||
+ | |||
+ | <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 B f3 R g3 E *:n3 E *:a4 E *:b4 R d4 R e4 E *:a5 B c5 B d5 R 1:e5 E +:d6 E +:e6" | ||
+ | /> | ||
+ | |||
+ | and | ||
+ | |||
+ | <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 B f3 R g3 E +:h3 E *:n3 E *:a4 E *:b4 R d4 R e4 R 1:f4 E +:g4 E +:h4 E +:i4 E *:a5 B c5 B d5 E +:f5 E +:g5 E +:h5 E +:i5 E +:e6 E +:f6 E +:g6 E +:h6 E +:i6" | ||
+ | /> | ||
+ | |||
+ | using [[Edge_template_IV2b|IV-2-b]]. | ||
+ | |||
+ | Blue has to play on the only overlapping field: | ||
+ | |||
+ | <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 B f3 R g3 E *:n3 E *:a4 E *:b4 R d4 R e4 R 6:i4 E *:a5 B c5 B d5 R 2:e5 R 4:f5 B 3:d6 B 1:e6 B 5:f6" | ||
+ | /> | ||
+ | |||
+ | Red 6 is connected to the bottom and to the left with [[Tom's move]]. | ||
==== ... 5. e4 ==== | ==== ... 5. e4 ==== | ||
Line 115: | Line 145: | ||
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 g3 E *:n3 E *:a4 E *:b4 R d4 E *:a5 B c5 B d5 R 2:f5 B 1:e6" | 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 g3 E *:n3 E *:a4 E *:b4 R d4 E *:a5 B c5 B d5 R 2:f5 B 1:e6" | ||
/> | /> | ||
+ | |||
+ | Continuation: | ||
+ | <div class="toccolours mw-collapsible mw-collapsed"> | ||
Now Red has two threats: | Now Red has two threats: | ||
Line 137: | Line 170: | ||
− | + | ''7. f2'' | |
<hexboard size="6x14" | <hexboard size="6x14" | ||
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 B 1:f2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:e4 R | + | 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 B 1:f2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:e4 R 8:h4 E *:a5 B c5 B d5 R 4:e5 R f5 B 7:g5 R 6:h5 B 5:d6 B e6 B 3:f6" |
/> | /> | ||
− | + | ''7. g2'' | |
− | + | ||
<hexboard size="6x14" | <hexboard size="6x14" | ||
Line 153: | Line 185: | ||
− | + | ''7. f3'' | |
<hexboard size="6x14" | <hexboard size="6x14" | ||
Line 159: | Line 191: | ||
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 B 1:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:e4 R 6:i4 E *:a5 B c5 B d5 R 4:e5 R f5 B 5:d6 B e6 B 2:f6" | 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 B 1:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:e4 R 6:i4 E *:a5 B c5 B d5 R 4:e5 R f5 B 5:d6 B e6 B 2:f6" | ||
/> | /> | ||
− | 6 is now connected to the left by [[Tom's move]]. | + | 6 is now connected to the left and to the bottom by [[Tom's move]]. |
− | + | ''7. e4'' | |
+ | <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 R 2:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 B 1:e4 R 4:i4 E *:a5 B c5 B d5 R f5 B e6 B 3:f6" | ||
+ | /> | ||
+ | 4 is again connected to the left and to the bottom by [[Tom's move]]. | ||
+ | |||
+ | ''7. f4'' | ||
+ | |||
+ | <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 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:e4 B 1:f4 E *:a5 B c5 B d5 E +:e5 R f5 E +:d6 B e6 E +:f6" | ||
+ | /> | ||
+ | |||
+ | Blue has to go on one of the 3 marked fields. However, d6 can't be any better than 35, so it's enough to look at e5 and g6. Let's have a look at g6 first: | ||
+ | |||
+ | <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 R g3 E *:n3 E *:a4 E *:b4 R d4 R e4 B f4 R 4:i4 E *:a5 B c5 B d5 R 2:e5 R f5 B 3:d6 B e6 B 1:f6" | ||
+ | /> | ||
+ | |||
+ | 4 is now connected to the bottom and to the left in a similar way as in [[Tom's move]]. (Just the piece on g3 is connected to the left in a slightly different way.) | ||
+ | |||
+ | The other possible move was e5: | ||
+ | |||
+ | <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 R 2:h2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 R g3 E *:n3 E *:a4 E *:b4 R d4 R e4 B f4 E *:a5 B c5 B d5 B 1:e5 R f5 B e6" | ||
+ | /> | ||
+ | |||
+ | Red 2 is connected to the left by two non-overlapping ways and to the bottom by a 5th row template that has yet to be added to this wiki. | ||
+ | |||
+ | ''7. g4'' | ||
+ | |||
+ | <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 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:e4 B 1:g4 R 6:i4 E *:a5 B c5 B d5 R 4:e5 R f5 B 5:d6 B e6 B 3:f6" | ||
+ | /> | ||
+ | |||
+ | Once again 6 is now connected to the bottom and to the left in a similar way as in [[Tom's move]]. | ||
+ | |||
+ | ''7. e5'' | ||
+ | |||
+ | <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 R 2:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 4:i4 E *:a5 B c5 B d5 B 1:e5 R f5 B e6 B 3:f6" | ||
+ | /> | ||
+ | |||
+ | And [[Tom's move]] at the end again. | ||
+ | |||
+ | ''7. f6'' | ||
+ | |||
+ | <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 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:i4 E *:a5 B c5 B d5 R f5 B e6 B 1:f6" | ||
+ | /> | ||
+ | |||
+ | Red 2 is connected to the bottom and to at least one of the red pieces in the middle by [[Tom's move]]. Red now has three threats to connect both these pieces to the top: | ||
+ | |||
+ | <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 R 1:f2 E +:g2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 E +:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 E +:f4 E +:g4 R i4 E *:a5 B c5 B d5 R f5 B e6 B f6" | ||
+ | /> | ||
+ | |||
+ | <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 +:f2 E +:g2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 E +:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 E +:e4 R 1:f4 R i4 E *:a5 B c5 B d5 R f5 B e6 B f6" | ||
+ | /> | ||
+ | |||
+ | and | ||
+ | |||
+ | <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 R i4 E *:a5 B c5 B d5 E +:e5 R f5 B e6 B f6" | ||
+ | /> | ||
+ | |||
+ | Blue has to play on the overlap: | ||
+ | |||
+ | <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 E +:f4 R i4 E *:a5 B c5 B d5 R f5 B e6 B f6" | ||
+ | /> | ||
+ | |||
+ | First move: | ||
+ | |||
+ | <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 B 1:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:e4 B 3:f4 R i4 E *:a5 B c5 B d5 R 4:e5 R f5 R 6:g5 B 5:d6 B e6 B f6" | ||
+ | /> | ||
+ | |||
+ | Second move: | ||
+ | |||
+ | <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 R 2:f3 R g3 R 4:h3 E *:n3 E *:a4 E *:b4 R d4 B 1:f4 B 3:g4 R i4 E *:a5 B c5 B d5 R f5 B e6 B f6" | ||
+ | /> | ||
+ | </div> | ||
==== ... 5. f6 ==== | ==== ... 5. f6 ==== | ||
− | + | Red can start like this: | |
+ | |||
+ | <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 R g3 E *:n3 E *:a4 E *:b4 R d4 E *:a5 B c5 B d5 R 2:e5 B 1:f6" | ||
+ | /> | ||
+ | |||
+ | Red now has these threats: | ||
+ | |||
+ | <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 +:d3 E +:e3 R g3 E *:n3 E *:a4 E *:b4 R d4 R 1:e4 E *:a5 B c5 B d5 R e5 E +:d6 E +:e6 B f6" | ||
+ | /> | ||
+ | |||
+ | and | ||
+ | |||
+ | <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 R 1:f2 E +:g2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 E +:f3 R g3 E *:n3 E *:a4 E *:b4 R d4 E +:f4 E +:g4 E +:h4 E *:a5 B c5 B d5 R e5 E +:f5 E +:g5 E +:h5 E +:d6 E +:e6 B f6 E +:g6 E +:h6" | ||
+ | /> | ||
+ | |||
+ | using [[Edge_template_IV2e|IV-2-e]]. | ||
+ | |||
+ | Blue has to play on the overlap: | ||
+ | |||
+ | <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 R g3 E *:n3 E *:a4 E *:b4 R d4 E *:a5 B c5 B d5 R e5 E +:d6 E +:e6 B f6" | ||
+ | /> | ||
+ | |||
+ | First move: | ||
+ | |||
+ | <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 R 4:f2 E *:m2 E *:n2 E *:a3 E *:b3 E *:c3 R g3 E *:n3 E *:a4 E *:b4 R d4 B 3:e4 B 5:f4 R 6:g4 E *:a5 B c5 B d5 R e5 B 7:f5 B 8:h5 B 1:d6 R 2:e6 B f6" | ||
+ | /> | ||
+ | |||
+ | You get the the defense against the other move by just swapping 1 and 2 in the diagram above. | ||
==== ... 5. g6 ==== | ==== ... 5. g6 ==== | ||
− | + | <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 R g3 E *:n3 E *:a4 E *:b4 R d4 R 2:f4 R 6:h4 E *:a5 B c5 B d5 B 5:f5 B 7:g5 R 8:i5 B 3:e6 R 4:f6 B 1:g6" | ||
+ | /> | ||
+ | |||
+ | Note that 2 is safely connected to the top, so 3 is forced. | ||
Line 175: | Line 345: | ||
=== Defense against 1. d6 === | === Defense against 1. d6 === | ||
− | |||
− | |||
Red has this line: | Red has this line: | ||
Line 186: | Line 354: | ||
Blue 3, 5 and 7 are forced. | Blue 3, 5 and 7 are forced. | ||
+ | |||
+ | Continuation: | ||
+ | <div class="toccolours mw-collapsible mw-collapsed"> | ||
Red has these threats: | Red has these threats: |
Revision as of 07:21, 28 May 2016
Contents
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 threats:
using the ziggurat,
using III-1-b and
using IV-1-d.
For a blocking attempt, Blue has to play on the overlap:
Defense against 1. e3
Details yet to come...
Defense against 1. d5
Red can start like this:
Continuation:
Red has this threat:
So all these fields need to be considered:
... 5. f3
Red has 2 threats:
and
using IV-2-b.
Blue has to play on the only overlapping field:
Red 6 is connected to the bottom and to the left with Tom's move.
... 5. e4
Yet to come ...
... 5. f4
Yet to come ...
... 5. g4
Yet to come ...
... 5. e5
Yet to come ...
... 5. f5
Yet to come ...
... 5. g5
Yet to come ...
... 5. d6
The group with 2 is connected to the top in two non-overlapping ways (see area marked with +) and to the bottom with IV-2-b.
... 5. e6
Red can respond here:
Continuation:
Now Red has two threats:
and
Blue has to play on the overlap:
7. f2
7. g2
7. f3
6 is now connected to the left and to the bottom by Tom's move.
7. e4
4 is again connected to the left and to the bottom by Tom's move.
7. f4
Blue has to go on one of the 3 marked fields. However, d6 can't be any better than 35, so it's enough to look at e5 and g6. Let's have a look at g6 first:
4 is now connected to the bottom and to the left in a similar way as in Tom's move. (Just the piece on g3 is connected to the left in a slightly different way.)
The other possible move was e5:
Red 2 is connected to the left by two non-overlapping ways and to the bottom by a 5th row template that has yet to be added to this wiki.
7. g4
Once again 6 is now connected to the bottom and to the left in a similar way as in Tom's move.
7. e5
And Tom's move at the end again.
7. f6
Red 2 is connected to the bottom and to at least one of the red pieces in the middle by Tom's move. Red now has three threats to connect both these pieces to the top:
and
Blue has to play on the overlap:
First move:
Second move:
... 5. f6
Red can start like this:
Red now has these threats:
and
using IV-2-e.
Blue has to play on the overlap:
First move:
You get the the defense against the other move by just swapping 1 and 2 in the diagram above.
... 5. g6
Note that 2 is safely connected to the top, so 3 is forced.
Defense against 1. d6
Red has this line:
Blue 3, 5 and 7 are forced.
Continuation:
Red has these threats:
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 +:
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:
Note that Red 4 connects to the bottom with IV-2-b.