Maruseru/ Splitting AThree Point Extension
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When the opponent has overextended stones, you should invade. It is usually more effective to attack than to make territory somewhere else and letting the opponent stabilize himself.
![[Diagram]](../../diagrams/6/0f8884e87a31a29629791c56ce91a0cf.png)
Initial setup
![[Diagram]](../../diagrams/21/f6721934730573a0350d5491a1ed9434.png)
Diagram 1: 1-2
: White can invade the overextended black stones.
: A normal response.
![[Diagram]](../../diagrams/20/b062b8341558e810cd0f18e0ea285abf.png)
Variation 1 at move 1 in Diagram 1: 1
: If Black gets to play here, this is the best move.
![[Diagram]](../../diagrams/37/d41438441e924cfd5050b36a9aebb6f9.png)
Variation 2 at move 2 in Diagram 1: 1
: A normal response.
![[Diagram]](../../diagrams/46/8aa0c13207937e3a54b7ff0ce0a79ecf.png)
Variation 3 at move 2 in Diagram 1: 1-8
: This is not a good move.
: Black is separated.
: Black cannot connect.
![[Diagram]](../../diagrams/14/c07e4b2b35b0bbc87f1c02785d71e46a.png)
Variation 4 at move 2 in Variation 3: 1-6
: This nozoki is not good.
: Black has this tesuji to connect his stones.
![[Diagram]](../../diagrams/43/1cd03573ed179d6a61ffeb80d0fc31de.png)
Variation 5 at move 3 in Variation 3: 1
: This is another idea.