Guide to Piece Exchanges

1. When you're ahead in material. Each exchange brings you closer to a won endgame with fewer complications.
2. When trading removes the opponent's active piece. Exchange their best piece for your worst.
3. When you want to simplify to a winning endgame. If you have a structural advantage (better pawns, passed pawn), exchanges magnify it.
4. When it creates a favourable piece matchup. Trading into a bishop vs knight position that favours you.

1. When you're attacking. More pieces means more attacking potential.
2. When the exchange helps the opponent. Trading your active piece for their passive one is a mistake.
3. When you have initiative. Initiative requires pieces, don't trade it away.
4. When the resulting endgame is drawish. Opposite-coloured bishops after the exchange? Avoid if you want to win.

Petrosian was the greatest master of strategic exchanges. His approach:

1. Exchange the opponent's most dangerous piece in every position.
2. Trade bishops when the opponent needs them for attack.
3. Keep knights when the position is closed (knights are better in closed positions).
4. Exchange queens when defending, queenless middlegames are easier to defend.
5. Use exchange sacrifices to remove key pieces.

Before every exchange, ask:

1. Does this exchange help my position or my opponent's?
2. What piece does the opponent rely on most? Can I trade it?
3. What endgame results from this exchange? Is it favourable?
4. Does the exchange create weaknesses (doubled pawns, open files for the opponent)?
5. Am I trading active pieces for passive ones? See Middlegame to Endgame.