Checkmate's You Must Know-Smothered Mate.

The result of successful attacks is often a smothered mate pattern. And while many players can get to this, they often don't know how to finish off the game.

Smothered Mate - Best Of Chess

Queen Sacrifice leads to a Smothered Mate, Smothered Mate

How to Checkmate Your Opponent

A Smothered Mate with a Twist In chess composition, to conceive

What Is a Smothered Checkmate? - Howcast

Smothered Mate In 7!? The Blackburne Shilling Gambit

The Art of Checkmate (Dover Chess) by Renaud, Georges

Chessis

The Complete Checkmate Patterns List [with examples]