Clearance Sacrifices Explained
A clearance sacrifice is the sacrifice of a piece to open a line (file, rank, or diagonal), clear a square for another piece, or remove a blockade. The sacrificed piece's main purpose is to "get out of the way", its removal creates possibilities that are worth more than the material invested. These often produce the most beautiful combinations in chess.
Types of clearance
- Line clearance: Moving a piece off a file, rank, or diagonal so that another piece can use it. Example: a rook sacrifice on d1 to clear the d-file for the queen.
- Square clearance: Moving a piece off a key square so that another piece can occupy it. Example: a knight sacrifice on e5 to clear e5 for a bishop.
- Blockade removal: Sacrificing the piece that's blocking your own pawn's advance.
How to recognize opportunities
- Your own piece is blocking a promising line. If you see a great idea but your own piece is in the way, consider sacrificing it to clear the path.
- A key square is occupied by your own piece. Could another piece use that square more effectively?
- A pawn needs to advance but is blocked. Can the blocking piece be sacrificed to open the way?
- Multiple pieces could use the same line. Sacrifice the least valuable one to open it for the most valuable.
Famous clearance sacrifices
Many of chess's most famous combinations feature clearance sacrifices. Tal's games are full of clearance sacrifices, he would sacrifice pieces simply to open lines for his remaining forces. The "Evergreen Game" (Anderssen, 1852) features multiple clearance sacrifices. Fischer's "Game of the Century" includes a clearance sacrifice. Study these in the legends archive.
Practice
In your games, when your attack seems stuck, ask: "Is one of my own pieces in the way?" If so, consider whether sacrificing it would open decisive possibilities. The clearance sacrifice is often the key to "unlocking" a position. Practice recognising these on the puzzle trainer. See Every Sacrifice Type.