Overloading is a chess

Chess

Chess is a two-player board game played on a chessboard, a square-checkered board with 64 squares arranged in an eight-by-eight grid. It is one of the world's most popular games, played by millions of people worldwide at home, in clubs, online, by correspondence, and in tournaments.Each player...

 tactic

Chess tactic

In chess, a tactic refers to a sequence of moves which limits the opponent's options and may result in tangible gain. Tactics are usually contrasted with strategy, in which advantages take longer to be realized, and the opponent is less constrained in responding.The fundamental building blocks of...

 in which a defensive piece is given an additional defensive assignment which it cannot complete without abandoning its original defensive assignment.

Example

Krasenkow–Karpov

Anatoly Karpov

Anatoly Yevgenyevich Karpov is a Russian chess grandmaster and former World Champion. He was the official world champion from 1975 to 1985 when he was defeated by Garry Kasparov. He played three matches against Kasparov for the title from 1986 to 1990, before becoming FIDE World Champion once...

, in the first round of the 2003 Corus chess tournament

Corus chess tournament

The Tata Steel Chess Tournament formerly called the Corus chess tournament takes place every year, usually in January, in a small town called Wijk aan Zee, part of the larger Beverwijk in the province of North Holland in the Netherlands...

, reached the diagrammed position with Black to play. As the white rook on f1 is tied to the defense of the pawn on f3, Black won immediately with 1... Re1, overloading the rook: If 2. Rxe1 or 2. Qc4, then 2... Qxf3#. If 2. Kg2, then similarly, 2... Rxf1 3. Kxf1 Qxf3+ and 4... Qxd5.