Portable Game Notation Algebraic Notation (SAN). For most moves the SAN consists of the letter abbreviation for the piece, an codice_27 if there is a capture, and the two-character algebraic name of the final square the piece moved to. The letter abbreviations are codice_28 (king), codice_29 (queen), codice_30 (rook), codice_31 (bishop), and codice_32 (knight). The pawn is given an empty abbreviation in SAN movetext, but in other contexts the abbreviation codice_33 is used. The algebraic name of any square is as per usual algebraic chess notation; from white's perspective, the leftmost square closest to white is codice_34, the rightmost square closest to the
Chess piece relative value Chess piece relative value In chess, the chess piece relative value system conventionally assigns a point value to each piece when assessing its relative strength in potential exchanges. These values help determine how valuable a piece is strategically. They play no formal role in the game but are useful to players and are also used in computer chess to help the computer evaluate positions. Calculations of the value of pieces provide only a rough idea of the state of play. The exact piece values will depend on the game situation, and can differ considerably from those given here. In some