Strike at the waist of the keima

Reference diagram  

Strike at the waist of the keima is a proverb which advises to cut across a keima.

• See cut across for a technical treatment; “across” means at the far side from other stones one may have.
• There was an early mistranslation of this proverb. While koshi in Japanese does mean waist, in tsukekoshi it is a verbal form meaning crossing over. See /Discussion

See also

More information regarding cutting of a keima can be found here:

• Cutting right through a knight's move is very big
• Cutting the keima can be severe