Gokyo Shumyo, Section 1, Problem 10b / Solution

White kills  

Since 1 was the vital point in Gokyo Shumyo, Section 1, Problem 10 / Solution, and Black neglected playing there, White may think first of playing there. And a good idea it is. Black's only resistance is 2, but White 3 makes miai of A and B, where the continuation Black A White B results in a bent four in the corner.

Wrong  

White 1 here is wrong. Black remembers the vital point and plays 2. 3 and 4 are kind of miai. After 4, White can't connect at A, for capturing four stones will give Black a second eye.

White kills(?)  

Doesn't this White 1 work as well? A and B are miai to kill.

Bill: Not really.

White kills? Not!  

Now even if throws in at , Black has two eyes.