Automatic Drawing Rules

When the game is not winnable, it is strongly recommended that both players draw the game by themselves. To prevent one or both players from dragging the games for a long time, You should impose the following 3 rules for automatic drawing:

• Effective Rule: When the total number of effective moves, moves made by each side excluding checking/chasing moves or moves to respond to checking/chasing, reaches 120.
• Progress Rule: When the total number of moves by each side since the last time a progress is made, i.e. since (1) the last capture or (2) the last advance of a pawn already crossed the river, reaches 30.
• Moves Rule: When the total number of moves made by each side reaches 300. This rule is rarely used, but is here for completeness.