Rapid chess is a time control format in which each player has between 10 and under 60 minutes for all their moves in a game. It sits between blitz chess (under 10 minutes per player) and classical chess (60 minutes or more), offering a balanced blend of strategic depth and dynamic play.
This format is widely popular because it gives players enough time to calculate multi-move variations and build coherent plans — something that blitz rarely allows — while keeping games to a manageable length of one to two hours. The most common rapid time controls are 15+10 (15 minutes plus a 10-second increment per move) and 25+0.
For players rated between 800 and 1400, rapid is one of the best formats to improve. There is enough time to apply principles learned in training — opening development, tactical motifs, endgame technique — without the panic of blitz. It also teaches proper clock management, a skill that carries over into all formats.