Scholar's mate

In chess, Scholar's Mate is the checkmate achieved by the following moves, or similar:

The same mating pattern may be reached by various move orders. For example, White might play 2.Qh5, or Black might play 2...Bc5. In all variations, the basic idea is the same: the queen and bishop combine in a simple mating attack on f7 (or f2 if Black is performing the mate).

Scholar's Mate is sometimes referred to as the "Four-Move Checkmate", although there are other ways to checkmate in four moves.

Unlike Fool's Mate, which rarely occurs at any level, games ending in Scholar's Mate are quite common among beginners. However, it is not difficult to parry.

After 1. e4, Black can play a semi-open defense. Openings such as the French Defense or the Scandinavian Defense render Scholar's Mate unviable, while other openings such as the Sicilian Defense makes 2.Bc4 a bad move (1.e4 c5 2.Bc4? e6, intending ...d5, gaining time by hitting the c4-bishop and attaining easy equality).

The most common response to the Bishop's Opening is 2... Nf6 (see Bishop's Opening, Berlin Defense), which also renders Scholar's Mate unviable.

The cleanest way to defend against the mate threat is 3... g6. Should White renew the Qxf7 threat with 4. Qf3, Black can easily defend by 4... Nf6 (see diagram), and develop the f8-bishop later via fianchetto (...Bg7).

If Black played 2... Bc5 instead of 2...Nc6, then 3...g6?? is a blunder because after 4.Qxe5+ Black also loses the h8-rook to 5.Qxh8. The best move is 3... Qe7!, which protects both the f7-pawn and e5-pawn, and threatens 4...Nf6 to gain a tempo on the h5-queen. Play might continue 4. Nf3 (threatening the e5-pawn) Nc6 5. Ng5 Nh6, when White has no way to keep up the pressure and will soon have to pull his exposed pieces back.

Although a quick mate on f7 is almost never seen in play above beginner level, the basic idea underlying it—that the f7- and f2-squares, defended only by the kings, are weak and therefore good targets for early attack—is the motivating principle behind a number of chess openings.

...
Wikipedia