The Phases of a Chess Game
Opening, middlegame, and endgame — the three stages of a chess game.
The Phases of a Chess Game
Opening, middlegame, and endgame — the three stages of a chess game.
A chess game is conventionally divided into three phases: the opening, the middlegame, and the endgame. The boundaries between them are not sharp. They describe the character of the position rather than a fixed move number.
The Opening
The first phase, typically the first ten to fifteen moves, is concerned with developing the pieces, contesting the center, and placing the king in safety. Established sequences of opening moves are catalogued in the opening directory. Most openings run into ten to twenty moves of documented theory, after which both sides are on their own.
The Middlegame
Once the pieces have been developed and the kings castled, the game enters the middlegame. This phase is dominated by tactics and strategy: planning, piece activity, pawn structure, and combinations. The majority of decisive games are decided here.
The Endgame
As pieces are exchanged and the board simplifies, the game enters the endgame. With fewer pieces the king becomes an active participant, and small advantages in pawn structure or piece placement become decisive. Endgame play is characterised less by calculation than by technique.
A game may move backwards and forwards between phases. The exchange of queens does not automatically mean an endgame has begun. A middlegame attack may flare up from an apparently quiet endgame. The three-phase model is a guide, not a rule.