Fool's mate, also known as the "two-move checkmate," is the quickest possible
checkmate in the game of
chess. One example consists of the moves leading to the position shown...
There are eight slight variations on the pattern —
White might play f2-f4 instead of f2-f3 or move the g-
pawn before the f-pawn, and Black may play e7-e6 instead of e7-e5.
The fool's mate received its name because it can only occur if White plays extraordinarily weakly, i.e. like a fool. Even among rank beginners, the mate almost never occurs in practice.
The same basic mating pattern may also occur later in the game. There is, for instance, a well-known trap in the Dutch Defence which occurred in 1896 between Frank Melville Teed and Eugene Delmar that runs 1.d4 f5 2.Bg5 h6 3.Bf4 g5 4.Bg3 f4; it seems that Black has won the bishop, but now comes 5.e3 (threatening Qh5#, the basic Fool's mate idea) 5...h5 6.Bd3?! (6.Be2 is probably better, but this move sets a trap) 6...Rh6? (defending against Bg6#, but...) 7.Qxh5+! Rxh5 8.Bg6#...
A similar mate can occur in From's gambit (Bird's opening) 1. f4 e5 2. g3 exf4 3. gxf4?? Qh4#...
More generally, the term fool's mate is applied to all similar mates early in the game; for example, 1.e4 g5 2.d4 f6 3.Qh5#
The pattern of the simplest fool's mate is maintained: a player advances his f- and g-pawns, allowing a
queenmate along the unblocked diagonal. One such fool's mate is widely reported to have occurred in a possibly apocryphal 1959 game between Masefield (or Mayfield, depending on the source consulted) and Trinka (or Trinks or Trent) which lasted just three moves: 1.e4 g5 2.Nc3 f5 3.Qh5#(variants on these moves also exist).
Even more generally, the term "Fool's mate" is used in chess variants for the shortest possible mate, especially those which bear a resemblance to the orthodox chess fool's mate. Fool's mate in progressive chess, for example, is 1.e4 f6 2. Nc3 g5 3. Qh5#
And also remember, the fool's mate is for fools.
