To mate on f7 (or, for Black, f2) with a Queen or a Bishop in 4 moves – usually a very bad thing to try.When teaching about this, Dan calls this “Dumb and Dumber

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#.

A type of strategy which leads to an early checkmate.

1. e4 e5 2. Bc4 Bc5 3. Qh5 Nf6 4. Qxf7#.

In chess, scholar's mate, widely known as blitzkrieg (German for "lightning war") is the checkmate which occurs after the white moves (in algebraic notation) 1.e4 2.Bc4 3.Qh5 4.Qxf7# or similar. The moves may be played in a different order or with slight variations, but the basic idea—the queen and bishop combining in an attack on f7—is the same. Sometimes scholar's mate is referred to as the four-move checkmate; however, there are other ways to checkmate in four moves.