Overloading is when a single enemy piece is responsible for two defensive duties at once, so taking one job away lets the other collapse.
A piece can only be in one place at a time. When one defender is the sole guard of two different things — two pieces, or a piece and a key square — it is overloaded, doing more than it can handle.
You exploit it by attacking one of its duties, often by capturing with check. The overworked piece must answer there, and the moment it does, the second thing it was guarding is left hanging.
Spotting overworked pieces is a huge source of tactics. When a position feels held together by one busy defender, look hard — there’s usually a way to make it choose.
It means one piece is the only thing defending two separate targets. Because it can’t cover both at once, attacking one duty lets you win the other.
A fork is one of your pieces attacking two targets. Overloading is about one of the opponent’s pieces having to defend two things — you punish it by attacking one and winning the other.
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