Beginner Exercise 151 / Solution

Sub-page of BeginnerExercise151

Incorrect answers

[Diagram]

Incorrect (1).



W1 is incorrect.

  • If White continues with a, b, or d Black captures with c and escapes.
  • If White continues with c, Black responds with a. Then no matter which of b or d White chooses, Black captures or escapes with the other.



[Diagram]

Incorrect (2)



W1 is incorrect.

  • If White moves next with a or b, Black chooses the other.
  • If White moves next with c or d, Black chooses the other.



Correct solution

[Diagram]

Solution.



W1 is the correct solution. If Black moves anywhere except B2, White captures four pieces by moving there.

Alex Weldon: Worth showing the diagram for the oiotoshi since not all beginners will see it.

[Diagram]

Variation, worse for Black

If Black captures with the White stone (that had been at a) by playing the marked stone, White plays W1 and catches four stones in oiotoshi (connect-and-die). If Black connects at a, White b catches all 9 stones.



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