The Four Move Checkmate is the attempt of a beginner
to checkmate you in four moves right from the start of the chess game. No serious player would even try this nonsense, because he knows that the queen will be brought into the game too early and that she will be chased away sooner or later by the opponent's pieces. At the same time Black will develop his pieces and takes control of vital center squares. In the end Black has his pieces developed more effectively and has a better position than White.
This attempt to win in four moves violates chess principles and can't work. One principle is: Don't bring the queen out to early but develop your light pieces instead. Light pieces are bishops and knights.
No chess player who plays in a chess club would ever try this in a club tournament because all other players who see this attempt to try for a mate in four moves would just laugh at him. And no serious player does hope that his opponent is so stupid to let himself get mated in four moves only. To go for this in a chess tournament would be like an insult of the opponent's intelligence.
Just watch this video and I hope that you understand what I mean.
