drchr: Why is it incorrect to capture the two stones on row 1?
White plays E2, placing the two stones on row 1 in atari.
If black does defend with F1, white captures with F1.
If black defends with F1, white plays on C4, and then black can't escape.
Sadaharu: The atari is trivial but I added it as a variation.
The atari is trivial but I added it as a variation.