What "blitz chess" means in chess

Blitz chess is a fast-paced variant of chess in which each player has a limited amount of time to make their moves. The time limit is usually five minutes or less per player, and the game is often played with a digital chess clock to keep track of the time. Blitz chess requires quick thinking, fast decision-making, and the ability to calculate moves quickly. It is a popular form of chess played in tournaments and online.