Authors:
Main line: Hashimoto Utaro 9p
Variations: unkx80, Dieter Verhofstadt 1k
Leaving out the hane enables Black to play hane himself. The most White can get out of it is to starting a (terribly disadvantageous) ko at a.
If White connects the ko at , the atari at blows the eyeshape away. If White doesn't, a black capture at continues the ko.