Establishing control over the center squares is a key aspect of the chess middlegame. This gives you more space to move your pieces, and makes it harder for your opponent to do the same.
Developing your pieces to active squares where they can be used to attack or defend is crucial. Knights and bishops should be placed on squares where they can attack enemy pieces, and rooks should be placed on open files where they can control the center or penetrate the enemy position.
The middlegame is a good time to start thinking about your king's safety, especially if the enemy has a strong attack. Castling is a good way to secure your king, but make sure you don't castle into a dangerous situation.
Pawns play a critical role in the middlegame. A strong pawn structure can restrict the enemy's pieces and control important squares, while weak pawns can leave your position vulnerable to attack. Consider pawn chains, isolated pawns, backward pawns, and doubled pawns when evaluating your pawn structure.
Making sure your pieces work together is crucial in the middlegame. Attack with multiple pieces, and make sure your pieces defend each other. Avoid exposing your pieces to enemy attack without a good reason.
Sacrificing a piece in the middlegame can be a good way to create threats, break through the enemy position, or simplify the position. However, sacrifices should be well thought out and based on a solid plan.
Having two bishops can be a significant advantage in the middlegame, as it gives you more control over the board and makes it harder for your opponent to coordinate their pieces.
Different squares can have different importance in the middlegame, based on the pawn structure and piece placement. Understanding the significance of key squares can help you choose where to place your pieces and how to attack the enemy.
Anticipating your opponent's plans and taking steps to prevent them from coming to fruition is an important part of the middlegame. Consider what your opponent is trying to do, and try to stop them before they get started.
Knowing what stage the game is in, and what that means for your strategy, is crucial in the middlegame. In the early middlegame, you may be focused on developing your pieces and castling. In the later middlegame, you may be focused on creating threats and launching an attack.