Best move  

It's best to keep the pressure on the whole white group with B2. After the sequence to W9, black can attack on the top at 'a'.

Nearly as good  

B2 here is nearly as good. The difference is that after W3, black can't afford to jump to B6 immediately, but has to exchange B4-W5 first. Compare the position of B2 in this diagram with B2 in the diagram above.

(Followup problem: what goes wrong if you do try B4 at B6?)

Mistake 19  

If B2 here, then White can sacrifice two stones and take sente to play a big point next.

DietersMistakesIn2021/Solution18 last edited by xela on July 2, 2022 - 03:20
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