Definitions for "Middlegame"
The part of the game that occurs after the opening and before the endgame.
The phase of the game that sits between the opening and the endgame. Grandmaster Tarrasch once said, “Before the endgame, the Gods have placed the middlegame.
The phase of the game following the opening where there are still many pieces on the board and most of the pieces have been developed. (See also opening, endgame.)