A fork is a single move — most famously by a knight — that attacks two (or more) enemy pieces at once, so your opponent can only rescue one and you win the other. It’s the workhorse of chess tactics and the very first one most players learn.
The knight is the king of forks because it jumps in an L-shape that no other piece can block or easily challenge, and it can hit two targets that are nowhere near each other. But every piece can fork: a pawn can spear two pieces at once, a bishop or rook can hit two undefended targets on its lines, and the queen forks all day long.
The 10-second version
- A fork = one piece attacks two enemy pieces at the same time.
- The opponent can only save one.
- You capture the other next move.
A quick example
The knight on c7 attacks the king on e8 and the queen on a8 in one shot. Because the king is one of the targets, it’s a check — Black is forced to deal with that first (say Kd8), and the queen simply can’t run away in time. Next move, Nxa8 grabs the queen, leaving White with king, rook, and knight against a bare king — an easy win. A fork that hits king and queen like this has a nickname: a royal fork. Hit the king, queen, and a rook at once and it’s a family fork.
Related terms
This is the short version — our full fork guide covers every piece’s forking patterns and how to spot them, and you can drill the motif on the fork puzzles page. Browse the tactics hub for the whole toolkit, or the chess glossary for more definitions. A fork is a cousin of the pin, the skewer, and the discovered attack — the core four you’ll use constantly.
Mini-FAQ
Is a fork the same as a double attack? Basically, yes — a fork is a double attack delivered by one piece. Some players reserve “fork” for knights and pawns and use “double attack” for the longer-range pieces, but the idea is identical: one move, two threats.
What’s a royal fork? A fork that attacks the king and queen at the same time. Because it comes with check, the king must move and the queen is almost always lost.
Written and fact-checked by the Chess Lab Academy Editorial Team (AI-assisted, human-edited) · Position legality-checked with python-chess · Definition verified against Wikipedia and standard references · Last verified 2026-07-13 · How we verify content.