| Score Sheet | The sheet of paper on which the Chess moves and score are recorded.... |
| Short Castling | Castling on the Kingside.... |
| Simultaneous Display | Event where a single player plays with several people at the same time. Also known as Simultaneous Exhibition or Simul.... |
| Skewer | A threat against a valuable piece that forces that piece to move, allowing the capture of a less valuable piece behind it.... |
| Smothered Mate | A form of checkmate with a Knight, where the King is unable to escape because all the squares around him are occupied by its own pieces.... |
| Stalemate | When a player whose turn it is has no legal moves by any of his/her pieces, but is not in check. A stalemate is a draw.... |
| Strategy | The reasoning behind a move or a plan.... |
| Study | A term used to describe a composed endgame position with an artistic solution.... |
| Tactics | Manoeuvres that take advantage of short-term opportunities involving threats and counter threats.... |
| Threat | A move which contains an implied or expressed attack on a piece or the position of the opponent.... |
| Three-time repetition | Occurs when the players have been moving back and forth, repeating the same position. A three-time repetition results in a draw.... |
| Time Pressure | Time TroubleTime TroubleSituation where a player has a small amount of time to make a large number of moves....
... |
| Time Trouble | Situation where a player has a small amount of time to make a large number of moves.... |
| Touch Move | A Chess rule, which requires a player who touches a piece to actually move that piece.... |
| Tournament | A contest among more than two Chess players.... |
| Trade | Same as exchange.... |
| Trap | A Chess position, where a piece cannot escape from the attack.... |
| Tripled Pawns | Three Pawns of the same colour on a single file, one in front of the other.... |
| Under promotion | Promoting a Pawn, which has reached the first/eighth rank to a Rook, Bishop or Knight.... |
| Variation | A sequence of Chess moves, or line of play.... |
