The reduction of time fundamentally changes the nature of the competition. It ceases to be purely about finding the "best" move and becomes about finding the "best possible move in the next three seconds."
Blitz is a mirror: it exposes every weakness in opening knowledge, tactical vision, and time management, but it also rewards creativity and guts. All games combined show that in blitz, – you don’t have to play perfectly, just better than your opponent under the same ticking clock.
In the context of chess, "blitz" refers to any game where each player has to make all their moves. It is the most common format played online, accounting for a massive portion of daily matches on platforms like Lichess. Standard Blitz Time Controls