The short answer
Learn each movement pattern, then add blockers, captures and the rule that your king must remain safe.
A piece’s movement pattern is the beginning of learning chess, not the whole test for a legal move. You also need to inspect the route, the destination and your king. A move can look like the right shape and still be illegal because it uncovers an attack on your king.
Learn one family at a time. Rooks, bishops and queens slide; knights jump; kings take short steps; pawns move and capture differently. Their themed appearance can help you remember their roles, but the movement rules stay the same in every collection.
Ask three questions before moving
First ask whether this role can travel in the direction you chose. Next inspect the route and destination. A friendly piece blocks the destination for every role. An enemy piece can usually be captured by landing on its square, after which it is removed. Finally imagine the new position and check whether your own king would be attacked.
Capturing is not an extra action after moving. A rook travelling from a1 to an enemy piece on a5 makes one move and ends on a5. It cannot capture the a5 piece and continue to a8 on the same turn. You also do not have to capture merely because a capture is available; choose among the legal moves.
The rook travels along files and ranks
A rook moves any distance horizontally or vertically through empty squares. From d4 on an otherwise clear board, it can travel along the d-file or the fourth rank. It cannot move diagonally to e5. The distance is flexible: d4 to d5 and d4 to d8 use the same movement rule.
Suppose a friendly pawn stands on d6. The rook on d4 can move to d5 but cannot land on d6 or pass through it to d7. If the d6 pawn belongs to the opponent instead, the rook may capture it if king safety allows, but still cannot pass through it. Treat the first occupied square as the end of that ray.
The bishop follows diagonals
A bishop slides diagonally through empty squares. From c1 its diagonal towards the centre runs through d2, e3, f4, g5 and h6. A pawn on d2 blocks that entire route beyond c1. Moving that pawn can develop the bishop’s possibilities without moving the bishop itself.
A bishop always stays on the same square colour. This does not mean it can jump to any square of that colour: the destination must lie on a continuous diagonal and the route must be clear. Your two starting bishops cover different colour complexes, which helps explain why they can work well together.
The queen combines rook and bishop directions
The queen slides along ranks, files or diagonals. She does not combine several directions during one move. From d4 to f6 is a diagonal move; from d4 to f5 is not a queen move, even though you could describe a route containing one straight step followed by a diagonal step.
The queen is powerful, but remains subject to blockers and king safety. Her reach also makes it easy to overlook an attack from a smaller piece. Before bringing her far into the opponent’s position, check whether a pawn or knight could gain time by attacking her. Movement freedom is useful only when you can use it safely.
The knight jumps to an L-shaped destination
A knight finishes two files and one rank away, or one file and two ranks away. Think of the L as a way to locate the destination, not a route with a turning point. The knight jumps over intervening pieces. From its starting square g1 it can move to f3 even while friendly pieces occupy g2 and f2.
From d4 the eight possible destinations on a clear board are b3, b5, c2, c6, e2, e6, f3 and f5. Near an edge there are fewer destinations because some would be off the board. A knight changes square colour on every move. It cannot land on a friendly piece or make a move that exposes its king.
The king takes one safe step
A king normally moves one square in any direction. Unlike other pieces, it may not move onto an attacked square. Capturing an enemy piece is allowed only if the destination is safe after that capture. Removing the captured piece might reveal a rook, bishop or queen behind it, so inspect the resulting position rather than the current picture alone.
Kings cannot stand next to each other because each attacks the neighbouring squares. You never finish a game by taking the opposing king. A checked king must be made safe; checkmate ends the game when no legal response exists. Castling is a separate special king-and-rook move, explained in its own guide.
Pawns separate forward movement from capture
A white pawn on e2 can advance to e3 if e3 is empty, or to e4 on its initial move if e3 and e4 are both empty. It captures an enemy piece on d3 or f3 instead. Black pawns follow the same pattern towards lower rank numbers: a black pawn on e7 advances towards e6 and captures on d6 or f6.
A pawn cannot take an enemy directly in front of it, even if that enemy is undefended. It also cannot slide diagonally onto an empty square as an ordinary move. En passant is the carefully limited exception. Promotion changes the pawn into a chosen queen, rook, bishop or knight when it reaches the farthest rank.
Attacking a square is not always a legal move
An attack map and a list of legal moves answer different questions. A pawn attacks its forward diagonal squares even when they are empty, although it cannot normally move there without capturing. That is why your king cannot step onto such a square just because the pawn has no ordinary move to it.
A pinned piece can also attack a square even when moving there would expose its own king. Imagine a white rook on e2 shielding a white king on e1 from a black rook on e8. The white rook cannot legally leave the e-file, but still attacks d2. A black king on d3 may not step to d2. Learn this distinction before deciding that a defended-looking capture is safe.
A little extra clarity
Common questions
Can any piece jump besides the knight?
Among ordinary piece moves, only the knight can jump over intervening pieces. Castling has its own king-and-rook arrangement, but pieces between that king and rook prevent it.
Do I have to take a piece if I can?
No. Chess does not require an available capture. You may choose any legal move, provided you respond properly to check and keep your king safe.
Why is a normal-looking move sometimes rejected?
Check for a friendly piece at the destination, a blocker on the route, the wrong pawn direction, or an attack exposed against your king. A movement pattern alone does not establish legality.
Sources and further reading
Official rules and the references used for this guide.
Written by the Theme Chess team. Explanations help you learn; the linked rules remain the reference for formal play.