Beginner Exercise 44 / Solution

Sub-page of BeginnerExercise44
[Diagram]

Black first, what is the result?

KarlKnechtel: B1 threatens B3 at W2 which would make the second eye false; White must block. After B3, White can't connect with W4 at B5 because of shortage of liberties; and with any other response B5 captures, preventing the requisite two eyes. Even with the capture and connection of W4, B5 still destroys the eye, so White is dead.

[Diagram]

A mistake, so White makes two eyes

The shortage of liberties threat which follows shortly after B1 at a is the only key to solve this one.

Im sorry, but i think black 1 kill white... if not, can you please show me how white make two eyes there =D

 ??

ChrisSchack: I believe W2 does it, W answers atari by capturing B1 and can later fill at (or capture) b.

Jacob4Jesus: I believe B3 kills. If W captures at b a throw-in at B1 proves the eye is false.

JoelR: No, the throw-in is no good. W recaptures at B3, and is solidly connected everywhere. Throwing in a stone only works if after the sacrifice is taken off, the opponent cannot make an eye there. Jacob, please read the page RecognizingAnEye, especially the "more accurate alternative".



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