Chess>Combinations>Knight>SmotheredMate+QSac>7>1

White To Play

1) qh6     rg8

White threatens an immediate Queen and Pawn Box Mate and black Defends

2) nf3    qf8

"Knight Pivots," or "nops" back in order to be able to move to a better position. Black offers a "Defensive Exchange."

3) ng5      qxh6

White Positions his Knight" strongly and at the same time "Sacrifices his Queen." Black "Must Accept" because white threatens mate at H7 with his Queen.

4) nxf7#

The "Smothered Mate," or smate.