After a 30-move draw in the 12th game, the World Chess Championship match between Magnus Carlsen and Sergey Karajkin in New York will now be decided by tiebreakers.
The score was level at 6-6 after the regulation 12 games between the two players.
The shorter tiebreak games will be played on Wednesday. Carlsen (Norway) is the No. 1 rapid player in the world and the No. 2 blitz player. Karjakin (Russia) is No. 11 in blitz.
Commenting on the 12th game on her Twitter account, US grandmaster Susan Polgar said there was "too much at risk and neither wants to take a chance".
"Good to know that they have a day to rest after this epic encounter," grandmaster Simon Williams said in a tweet after the match.