Checkmate in the manner of 1. e4 e5 2. Bc4 Bc5 3. Qh5 Nf6 4. Qxf7*.

To mate on f7 (or, for Black, f2) with a Queen or a Bishop in 4 moves – usually a very bad thing to try.

A four-move checkmate (common among novices) in which White plays 1.e4, follows with Qh5 (or Qf3) and Bc4, and finishes with 4.Qxf7#.