Draw methods

Haha. Kelvin edited my post. Also he provided the book definitions of the various draws.

Rule 5.2 of the FIDE Laws of Chess detail the ways a game may end in a draw:

Stalemate - if the player on turn has no legal move but is not in check, this is stalemate and the game is a draw.

Mutual agreement - a player may offer a draw to his opponent at any stage of a game. If the opponent accepts, the game is a draw.

Threefold repetition - if an identical position has occurred three times, or will occur after the player on turn makes his move, the player on move may claim a draw (note that in this case the draw is not automatic - a player must claim it). Article 9.2 states that a position is considered identical to another if the same player is on move, the same pieces of the same color occupy the same squares and the same moves are available to each player (that is, each player has the same castling and en passant pawn capturing rights).

Fifty move rule - if fifty moves (by each side) have passed with no pawn being moved and no capture being made, a draw may be claimed. (Again, the draw is not automatic.)

Impossibility of checkmate - if a position arises in which neither player could possibly give checkmate by a series of legal moves, the game is a draw. This is usually because there is insufficient material left, but it is possible in other positions too (see the diagram). Combinations with insufficient material to checkmate are:
K v K
KB v K
KN v K
KB v KB with B on same colour

Some draw puzzles to solve.