Can a Pinned Piece Give Checkmate?

Yes. A pinned piece can give checkmate if it already attacks the king or can make a legal checking move without exposing its own king. A pin restricts movement; it does not remove the piece or erase its attacks.

Yes. A pinned piece may already attack the enemy king, may move legally along the pin line, or may be only relatively pinned and therefore free to move. The exact board geometry decides whether the checking move is legal.

Yes. For king movement and castling, a square is still treated as attacked even when the attacking piece cannot move because doing so would expose its own king.

Usually no. If the pinned defender attacks the capture square, the king may not move there. This is one of the most commonly misunderstood consequences of the attacked-square rule.

Yes. A knight keeps attacking its normal L-shaped destination squares while pinned. It may already give check, although it normally cannot move away from an absolute pin.

Yes. A pawn still attacks one square diagonally forward on each side while pinned. Those attacked squares remain unavailable to the enemy king.

An absolute pin occurs when moving the pinned piece off the line would expose its own king to check. Such a move is illegal, although the pinned piece still attacks squares.

A relative pin occurs when moving exposes a valuable piece such as a queen or rook rather than the king. The move is legal, but it may lose material or allow a strong tactic.

Sometimes. It cannot make a move that exposes its king, but a rook, bishop or queen may be able to slide along the pin line while continuing to shield the king.

Yes. A relative pin creates a tactical cost rather than a rules prohibition. The player may accept that cost if the move gives check, wins material or creates checkmate.

Yes. A pinned rook can sometimes move along the file or rank of the pin and give check while still blocking the attack on its own king. The Re5+ trainer case demonstrates this.

Yes. A bishop can give check while already pinned, and in some positions it can slide along the pin diagonal without exposing its king.

Yes. A queen may give check without moving, may move along the pin line, or may ignore a relative pin when the checking continuation is stronger than the material loss.

Only if the capture leaves its own king safe. An absolutely pinned piece cannot capture off the pin line when that would expose its king, but it may sometimes capture the attacker on the line.

Yes for king-safety purposes: its attacked squares still count. For ordinary tactical defence, however, the protection may be illusory if making the capture would expose its own king.

It can stop mate only with a legal defence. A piece that appears to guard a square may fail as a defender because moving or capturing would expose its king.

Attack and legal movement are different ideas in the chess rules. The piece retains its movement pattern, but king safety can make a particular move illegal.

No. The protected square can still be attacked for purposes of enemy king movement. In other tactical situations, you must calculate whether the pinned piece can legally carry out the apparent defence.

Only if the destination is not one of the knight's attacked squares. The pin does not switch off the knight's L-shaped control.

No. The pawn's diagonal attack still makes that square illegal for the king, even if moving the pawn itself would expose its own king.

Yes. A king may not castle through or onto an attacked square, and attacks from pinned pieces still count when determining whether those king squares are attacked.

No. Knights and pawns in absolute pins are often frozen, but line pieces may retain moves along the pin line. A relative pin never makes movement illegal by itself.

Pins remove practical defenders from key files, ranks, diagonals or mating squares. The attacker can then place a queen or rook where the pinned defender cannot legally capture it.

First identify what sits behind the piece. Then test the exact defensive move and ask whether the king would be in check afterward. Finally calculate line moves and captures that keep the king covered.

A pinned piece can participate in double check if the move is legal and reveals a second line attack, although such positions are uncommon. The moving side's king must remain safe after the move.

Yes, when the pin is relative or when the piece can move along the pin line without exposing its king. If moving off the line exposes its own king, the discovered-check idea is illegal.

Yes. Its attacks may cover an escape square, protect the checking piece or restrict the king while another piece delivers the direct check.

Yes for king movement. If a pinned knight attacks the checking piece's square, the enemy king cannot capture there. A different defending piece may still be able to capture it.

Yes. A pinned pawn's diagonal attack can protect a checking queen or rook and remove an escape square from the enemy king.

Yes. A checking piece may be untouchable because capturing it would expose the king to the line piece creating the pin.

Yes. Legal move generators treat those squares as attacked when checking king moves and castling, while separately rejecting moves that expose the moving side's king.

An attacked square is one controlled by a piece according to its capture pattern. A legal move must also leave the moving side's king safe, so a piece can attack a square it cannot legally move to.

For king safety, a square is considered attacked even when the attacking piece is constrained from moving because that move would expose or leave its own king under attack.

No. A correctly implemented server rejects the king move as illegal because the destination is attacked, regardless of the pin on the defending piece.

No legal position reached by legal play may leave both kings in check. A pinned piece can check the enemy king, but the previous move must still have left its own king safe.

The king is not normally described as pinned because it may never move into or remain in check. What looks like a pin on the king is simply a direct attack or a restriction on its legal moves.

Make the move mentally and trace the attacking line again. If the piece still blocks the rook, bishop or queen from reaching its king, the line move may be legal.

Yes, if the blocking move is legal and the resulting position leaves its king unattacked. A piece already absolutely pinned usually cannot leave its pin line to make the block.

Yes. A rook, bishop or queen may capture along the line while continuing to shield its king, and any pinned piece may capture the pinning piece when the king is safe afterward.

Use short yes-or-no legality positions before solving longer tactics. Check attacked squares first, then test king safety, and only after that calculate material consequences.