Touch-move rule the player touches his rook at the same time as touching the king, he must castle with that rook if it is legal to do so. If the player completes a two-square king move without touching a rook, the player must move the correct rook accordingly if castling on that side is legal. Otherwise, the move must be withdrawn and another king move made. When a pawn is moved to its eighth , once the player takes his hand off the pawn, a different move of the pawn can no longer be substituted. However, the move is not complete until
Fast chess than 60 minutes. Rapid chess can be played with or without time increments for each move. In a game where time increments are used, a player can automatically gain, for instance, ten more seconds on the clock after each move. In a case where time increments are used, the total time per player for a 60-move game must be more than 10 minutes, but less than 60 minutes. For the FIDE World Rapid Championship, each player will have 15 minutes, plus 10 seconds additional time per move starting from move 1. The United States Chess Federation (USCF) quick chess rating