Which preposition to use with gambit

in Occurrences 1%

But that seemed so abnormal, he felt forced to fall back on the theory that her declaration had been nothing more than a minor gambit in whatever game she was playing, and that consequently she bore no malice because of its failure.

of Occurrences 1%

Donna Isabella was provided for, for better or for worsealas, that the latter was to be her sad fatebeautiful, fascinating Isabella de' Medici, but Donna Lucrezia, nearly fifteen years of age, was the forfeit her father paid in his gambit of Medicean aggrandisement.

on Occurrences 1%

I was going to work the Scholar's Gambit on him, but he'll get his hooks on a whole bunch of money when he gets down town, so I turn him over to you.

Which preposition to use with  gambit