Fifty-move rule: what resets the count, and when the board ends the game
Published · By TG, the site operator
Some endings are drawn by the clock rather than by a trap. The fifty-move rule says that when fifty moves by each side pass with no capture and no pawn move, the game can be drawn. Players often misremember how the count works, so this note goes through it step by step.
How the count works
- Count from the last capture or pawn move, or from the start of the position if neither has happened yet.
- Each move by either side adds one. Fifty moves by White and fifty by Black make 100 half-moves.
- A capture, or any pawn move including a plain pawn push, sets the count back to zero.
- A check does not reset the count. A rook that gives check is still a rook move.
Claim, or automatic?
Over the board the rule is a claim. Under Article 9.3 of the FIDE Laws of Chess, the player with the move may stop the clock and declare a draw when the last 50 moves by each player have passed with no pawn move or capture. The claim can also be made on a move the player is about to write, if that move completes the count. A wrong claim does not end the game. Instead the opponent receives two extra minutes on the clock (Article 9.5.3). The game is drawn without any claim only after 75 moves by each side with no pawn move or capture, under Article 9.6.2, and a checkmate on that final move takes precedence.
Try a rook ending on the board →
What this board does
The board does not wait for a claim. Its draw test includes the fifty-move point, so when the count reaches 100 half-moves the game ends at once and the status line reads "Draw — fifty-move rule". Because the board stops at fifty moves each, the 75-move rule never comes into play here. The FAQ lists this rule with the other draws the board recognises.
Using the count in a game
- When you are winning slowly: a pawn move resets the count to zero. If a pawn can advance safely, pushing it gives you another fifty moves each before a claim is possible.
- When you are defending: a long shuffle of rook and king, with no pawns left and no captures, is what brings the rule closer. Count the moves before you repeat a plan.
For example, take a king-and-pawn ending where the count stands at 80 half-moves. One pawn push returns it to zero, and after that push the side to move has no claim available. The counts in this example were checked by computer.
To practise, start a game against the computer and steer toward a rook-and-king ending. Once only the kings and the rook remain, count the moves from the last capture or pawn move, and watch the board end the game when both sides have made fifty moves. The rules guide lists the rule in one line, and the FAQ covers the other ways a game is drawn automatically.
Sources
- FIDE Handbook: Laws of Chess, Articles 9.3, 9.5 and 9.6 — FIDE
- Chess Play Online: the complete rules guide — Chess Play Online
- Chess Play Online FAQ — Chess Play Online
Written by the operator of this site from the sources listed above. Spotted a mistake? Email [email protected] and it will be corrected.