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]

Initial setup

[Diagram]

Diagram 1: 1-2

W1: White can invade the overextended black stones.

B2: A normal response.

[Diagram]

Variation 1 at move 1 in Diagram 1: 1

B1: If Black gets to play here, this is the best move.

[Diagram]

Variation 2 at move 2 in Diagram 1: 1

B1: A normal response.

[Diagram]

Variation 3 at move 2 in Diagram 1: 1-8

B1: This is not a good move.

W2: Black is separated.

W8: Black cannot connect.

[Diagram]

Variation 4 at move 2 in Variation 3: 1-6

W1: This nozoki is not good.

B4: Black has this tesuji to connect his stones.

[Diagram]

Variation 5 at move 3 in Variation 3: 1

B1: This is another idea.


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