Changes

===The end of the game===

===The end of the game===

The game ends either with one player winning by checkmating his opponent's king, or by the loser resigning, signified by toppling his king over instead of moving, or in a draw with neither player winning.

*'''Checkmate''': The winning player checkmates his opponent's King (see below).

*'''Resignation''':  The losing player, facing an inevitable future checkmate, ''resigns'' rather than play out an extended series of hopeless moves.  A player may indicate resignation by toppling his king on its side.

*'''Loss on Time''':  In games with a time limit, a player may lose by failing to make a time control, causing his clock to run out.

*'''Draw''':  The game may end in a draw, in which case neither player wins.

====Checkmate====

====Checkmate====

Checkmate is achieved when the following conditions are met.  

Checkmate is achieved when the following conditions are met.  

* The King is directly attacked by an opponent's piece. (Check)

* The King is ''in check''; that is, it is directly attacked by an opponent's piece.

* Every square that the King can move to is also attacked by an opponent's piece.  

* Every square that the King can move to is also attacked by an opponent's piece.  

* The Piece that is attacking the King cannot be captured.  

* The Piece that is attacking the King cannot be captured.  

* Another Piece cannot be moved in between to cut off the attack on the King.

* Another Piece cannot be interposed between the attacking piece and the King to block the check.

When the King is checkmated, The game is over, and the player who checkmated the other player's king is the winner.

When a King is checkmated, the game is over, and the player initiating the checkmate is the winner.

====Draw====

====Draw====

There are several ways that the game can end in a draw. One of these is stalemate, which is described below. Additionally, the players can mutually agree to a draw, or a draw can be claimed if each player has made fifty consecutive moves without a pawn move or a capture, or if the same position has appeared on the board three times.

There are several ways that the game can end in a draw.  

 

*'''Stalemate''':  A player is said to be ''stalemated'' when he cannot make a legal move, and is not in check.

*'''Draw by agreement''': The players mutually agree to a draw.  In competitive chess, a player may make a draw offer after he has made his move, but before he has started his opponent's clock.

A player is stalemated when he cannot make a legal move, and is not in check.

*'''Draw by repetition''':  Either player may claim a draw if the same position has appeared on the board three times.  The three occasions need not be consecutive.

*'''50 move rule''':  Either player may claim a draw if fifty moves have transpired without a capture or a pawn move.

==Notation==

==Notation==