Boden's Mate
Boden's Mate is a checkmating pattern in chess characterized by bishops on two criss-crossing diagonals ( for example , bishops on a6 and f4 delivering mate to a king on c8 ) , with possible flight squares for the king being occupied by friendly pieces . 
<triplet> Boden's Mate <subj> checkmating <obj> instance of <triplet> bishops <subj> chess <obj> sport