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Many chess games end before a checkmate, when one player realizes that defeat is inevitable and resigns the game. Many chess games end in a draw rather than a victory and defeat. There are several reasons why a game might end in a draw: Agreement. Both players agree to end the game in a draw. Sta
lemate. The player whose turn it is cannot make any legal moves, and yet that player's king is not in check. This usually occurs when the only move a player can make would move his/her king into check. Repetition. The exact same arrangement of pieces occurs for the third time in a given game. Lack
of Force. There are insufficient pieces on the board for either player to checkmate the other. Example: when there are no pieces left other than the two kings. Fischer Random Chess Unlike Traditional Chess, the setup of the pieces varies with every game of Fischer Random Chess. The pawns setup is
always the same as Traditional Chess, but the setup of the other pieces is randomized. (But not completely random: the bishops are always on different colors, and there is always a rook on either side of the king.) Both players have the same setup, so there is no advantage to either player. Otherwis
e, the rules and piece movements are the same as for Traditional Chess. Note that the different setups can make for some unusual castling situations. Consult the two Castle buttons to the right of the chessboard to see whether your position allows castling at any given point. Clocks and Time Limits
When negotiating with a potential opponent, in addition to agreeing on a chess variation and on an entry fee, you need to agree to a time limit. At the start of the game, this time limit will be given to each player, and shown on the clock in the upper right corner of the Chess Challenge window. The
clock will display time in both traditional and digital formats. When it is your turn, your clock will count down, and your opponent's will be frozen. When you have made a move, your clock will freeze, and your opponent's will resume counting down. If a player's time runs out before the completion
of the game, that player loses. Rankings All players start with a Chess Challenge ranking of 1500. Your ranking goes up when you win games, and down when you lose games. Your ranking remains unchanged when you draw a game. Also, your ranking is never affected by a Free or Practice game. The magnitud
e of your rank change is based on three factors: The rank of your opponent - your rank will go up more if you beat a higher-ranked opponent than if you beat a lower-ranked opponent. Similarly, your rank will go down more if you lose to a lower-ranked opponent than if you lose to a higher-ranked oppo
nent. Your previous rank - your rank change will get smaller as your rank gets higher. The entry fee for the game - the higher the entry fee, the greater the change in your rank. Ending the Game To recap, you win a game of Chess Challenge if: You place your opponent's king in checkmate. Your oppo
nent resigns. Your opponent runs out of time. A game will end in a draw if: Both players agree to a draw. The game reaches a stalemate. The same arrangement of pieces occurs for the third time. Neither player has sufficient force to checkmate the other. Lack of Force. There are insufficient pi
eces on the board for either player to checkmate the other. Example: when there are no pieces left other than the two kings.

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