Cornering

In a ladder situation when no ladder escape exists, the attacking player can into a corner and create a "quasi-escape piece" at the very last minute. This play is called cornering.

Example:

WARNING: Unknown keyword: Bb
WARNING: Illegal character: '4'

This results in a new ladder, but now the attacking player is defending instead.

WARNING: Unknown keyword: Bb
WARNING: Illegal character: '4'

Red could have also cornered earlier, resulting, for example, in a 4th row ladder for Blue.