Which preposition to use with checkmated

at Occurrences 2%

This affair of state, which rested upon his shoulders, promised to go badly; if Lord Vernon persisted in his refusal to see him, he was checkmated at the start, before he had opportunity to make a move.

for Occurrences 1%

In fact, it looks rather like checkmate for Jemal the Great, and an end to the trouble he might have given the German control.

Which preposition to use with  checkmated