Chessy
What Is a Battery in Chess?
A battery is two pieces of the same line-moving type stacked on a file, rank, or diagonal to multiply pressure — for example doubled rooks on an open file, or a queen lined up behind a bishop.
How a battery works
The idea is simple: two pieces aiming down the same line hit a target with more force than one. If the front piece captures or moves, the second piece behind it is already aimed and ready to strike. This makes batteries especially dangerous against a pinned piece or a weak pawn, since the defender often can't handle both attackers at once.
Common battery setups
Doubled rooks on an open file is the classic battery — the front rook can invade while the back rook supports it. A queen and bishop on the same diagonal, often aimed at the enemy king, is another frequent pattern, sometimes called a 'Greek gift' setup when it targets h7 or h2. Even a queen and rook doubled on a file can overload a single defender.
Building and defending against one
To build a battery, look for an open or half-open line toward a weak target and bring your pieces onto it one at a time. To defend against an opponent's battery, the safest plan is usually to challenge the line before it fully forms — trading off one of the attacking pieces, or blocking the line with a well-placed piece of your own.
Frequently asked questions
What pieces can form a battery?
Any pieces that move in straight lines — rooks, bishops, and queens — can form a battery. Knights and kings can't, since they don't attack along a continuous line.
Is a battery the same as a pin?
No. A battery is two pieces stacked to attack along the same line, while a pin is when a piece can't move because it would expose a more valuable piece behind it. They often work together.
Why are batteries powerful?
Because they let one piece capture while a second piece immediately backs it up, often overwhelming a single defender who can only stop one attacker.