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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.
| + | #REDIRECT [[Edge_template_VI1a#Intrusion_at_e]] |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
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| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R j2 B i4"
| + | |
| − | />
| + | |
| − | | + | |
| − | Red should move here (or the equivalent mirror-image move at "+"):
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R h3 j2 B i4 E +:k3"
| + | |
| − | />
| + | |
| − | | + | |
| − | == Elimination of irrelevant Blue moves ==
| + | |
| − | This gives Red several immediate threats:
| + | |
| − | From III1a:
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R g5 h3 j2 B i4 E +:e7 +:f6 +:f7 +:g4 +:g6 +:g7 +:h4 +:h5 +:h6 +:h7"
| + | |
| − | />
| + | |
| − | | + | |
| − | From III1a again:
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R g5 h3 j2 B i4 E +:d7 +:e6 +:e7 +:f5 +:f6 +:f7 +:g4 +:g6 +:g7 +:h4"
| + | |
| − | />
| + | |
| − | | + | |
| − | From III1b :
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R g5 h3 j2 B i4 E +:d7 +:e6 +:e7 +:f5 +:f6 +:g4 +:g6 +:g7 +:h4 +:h5 +:h6 +:h7"
| + | |
| − | />
| + | |
| − | | + | |
| − | From IV1a:
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R g4 h3 j2 B i4 E +:b7 +:c6 +:c7 +:d5 +:d6 +:d7 +:e5 +:e6 +:e7 +:f4 +:f5 +:f6 +:f7 +:g5 +:g6 +:g7 +:h5 +:h6 +:h7"
| + | |
| − | />
| + | |
| − | | + | |
| − | From IV1b:
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R g4 h3 j2 B i4 E +:b7 +:c6 +:c7 +:d5 +:d6 +:d7 +:e5 +:e6 +:e7 +:f4 +:f5 +:f7 +:g5 +:g6 +:g7 +:h4 +:h5 +:h6 +:h7 +:i5 +:i6 +:i7"
| + | |
| − | />
| + | |
| − | | + | |
| − | The intersection of all of these leaves:
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="full bottom right"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R h3 j2 B i4 E +:e7 +:g4 +:g5 +:g6 +:g7"
| + | |
| − | />
| + | |
| − | | + | |
| − | == Specific defense ==
| + | |
| − | So we must deal with each of these responses. (Which will not be too hard!)
| + | |
| − | | + | |
| − | === Bg4 ===
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R h3 2:h4 4:h5 j2 B 1:g4 3:g6 i4"
| + | |
| − | />
| + | |
| − | And now either
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R h3 h4 h5 j2 2:j5 B g4 g6 1:h6 i4 E +:i5 +:k3"
| + | |
| − | />
| + | |
| − | | + | |
| − | or
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R h3 h4 h5 2:h6 j2 6:j5 4:j6 B g4 g6 3:g7 1:h7 i4 5:i6 E +:i5 +:k3"
| + | |
| − | />
| + | |
| − | | + | |
| − | === Bg5 ===
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="full bottom right"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R 2:f4 h3 j2 B 1:g5 i4"
| + | |
| − | />
| + | |
| − | Threatening:
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="full bottom right"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R 4:d5 f4 h3 j2 B g5 i4 E +:a7 +:b6 +:b7 +:c5 +:c6 +:c7 +:d6 +:d7 +:e4 +:e5"
| + | |
| − | />
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="full bottom right"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R 4:e6 f4 h3 j2 B g5 i4 E +:d7 +:e5 +:e7 +:f5"
| + | |
| − | />
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="full bottom right"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R 4:e5 f4 h3 j2 B g5 i4 E +:b7 +:c6 +:c7 +:d5 +:d6 +:e6 +:e7 +:f5 +:f6 +:f7"
| + | |
| − | />
| + | |
| − | So the only hope for Blue lies in the intersection of the threats, Be5, but it is unsufficient:
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="full bottom right"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R f4 2:f5 4:f6 6:g6 h3 j2 8:j5 B 1:e5 3:e7 5:f7 g5 7:g7 i4 E +:i5 +:k3"
| + | |
| − | />
| + | |
| − | === Bg6 ===
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R 2:g5 h3 4:h5 j2 B 3:f6 1:g6 i4 E +:e7"
| + | |
| − | />
| + | |
| − | | + | |
| − | 3 could be played at + with the same effect; in any case
| + | |
| − | now either
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R g5 h3 h5 j2 2:j5 B f6 g6 1:h6 i4 E +:i5 +:k3"
| + | |
| − | />
| + | |
| − | | + | |
| − | or
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R g5 h3 h5 2:h6 j2 6:j5 4:j6 B f6 g6 3:g7 1:h7 i4 5:i6 E +:i5 +:k3"
| + | |
| − | />
| + | |
| − | | + | |
| − | === Be7 ===
| + | |
| − | Either this
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R 2:g5 h3 4:h5 j2 6:j5 B 1:e7 3:g6 5:h6 i4 E +:i5 +:k3"
| + | |
| − | />
| + | |
| − | | + | |
| − | or a minor variation
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R 2:g5 h3 4:h5 6:h6 j2 10:j5 8:j6 B 1:e7 3:g6 7:g7 5:h7 i4 9:i6 E +:i5 +:k3"
| + | |
| − | />
| + | |
| − | | + | |
| − | === Bg7 ===
| + | |
| − | | + | |
| − | <hexboard size="7x14"
| + | |
| − | coords="none"
| + | |
| − | edges="bottom"
| + | |
| − | visible="area(a7,n7,n5,k2,i2,c5)"
| + | |
| − | contents="R 2:g5 h3 4:h6 j2 8:j5 6:j6 B 3:f6 1:g7 5:h7 i4 7:i6 E +:i5 +:k3"
| + | |
| − | />
| + | |
| − | | + | |
| − | [[category:edge templates]]
| + | |
