Xuanxuan Qijing Problem 2 / Solution

[Diagram]

Solution

The clamp of W1 is the solution. The strongest resistance black can try is a; b creates too many cutting points, while c alows white to escape.

[Diagram]

Resistance 1: Connection

After black connects, white connects under with W2 and escapes. Although black can try B3, he cannot contain white. It leads to a running fight with a couple of variations depending on when black decides to push or hane. However, you should find that in each variation white will escape by capturing when black hanes too early, or will have room for a second eye when black hanes too late.

[Diagram]

Resistance 2: Tiger's mouth.

After W6 at black+circle, white can live with a or escape with b.

[Diagram]

Resistance 3: Descent

B1 is the strongest resistance by black. The sequence to W5 follows.

[Diagram]

Next white tries to capture the three black stones. Notice W12 is threatening to play at B13 in sente and then make life with a. Were White to play at B13, she would have miai of playing at a and capturing the two marked Black stones. Black destroys White's eye with B13. After W14, Black can't escape.

[Diagram]

Descent follow-up (W6 error)

Note that the order of moves is important. If white play W6 like this...

[Diagram]

Descent follow-up (continued)

This variation fails because white is short on liberties, so white's exchange of white+circle for black+circle in the previous diagram is premature.


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