Chaos:
Draw:
There are two ways of ending a game in a draw.
The first is by agreement between the opponents in which one player offers a draw and the other player accepts the offer. This can occur at any time during the game.
The other is by request to support under the 50-move rule if the opponent refuses the draw offer.
The 50-move rule (as it's called in chess) applies when X turns or more by each player have transpired since move Y (or X turns by one player and X-1 turns by the player requesting the draw) without a capture.

Move Y is the starting turn from which the X count begins. Regardless of the variation, the Y turn is reset to the latest move a capture by either player is made including resetting it to a turn prior to the initial Y for that variation. A capture is the only way to reset Y. A capture occurs any time a piece is moved to a square occupied by an enemy piece regardless of which piece is removed from the game board and placed in the appropriate capture list.

The draw must be offered when it is your turn and prior to making a move (it must be possible to legally make all moves that turn without moving any piece onto a square occupied by an enemy piece if it's the Xth move but not if beyond that move). If the X count is met or exceeded and no draw offer is made then or after, the opportunity will expire when a piece is captured.

It is annoying to many players to receive multiple draw offers when the threshold "X" moves has not been met.
Do not offer a draw more than once prior to the threshold or there will be a penalty. Any request for support to enforce the 50-move rule when the constraints for the rule have not been met will also invoke the penalty.
The other player will choose between two possible penalties. Either Y will be reset to the move of the inappropriate draw offer or the player making the offer must choose one of his mines to be removed by support.