Removing the Defender

How This Tactic Works

Removing the defender (also called undermining) eliminates the piece that is protecting a key target. Once that guardian is gone, a previously defended piece or square becomes vulnerable. The defender can be removed by capturing it (even at the cost of material if the net result is favorable), by luring it away with a threat, or by pinning it so it can no longer defend. This tactic frequently sets up mating attacks — if you remove the piece guarding f7 or h7, the king may be checkmated.

How to Spot It

• →A key piece or square is defended by exactly one piece
• →You can capture that defender, even at the cost of some material, and still profit
• →Alternatively, you can threaten the defender so it must move, abandoning its duty

Practice Tips

• →After each game, review positions where a Removing the Defender was possible — either you played it, your opponent played it, or it was missed by both sides.
• →Focus on the key signal: A key piece or square is defended by exactly one piece. Train your pattern recognition until you see this automatically.
• →Upload your games to chess.rodeo for free Stockfish analysis — it will highlight exactly where tactical opportunities were missed in your games.

Related Defensive Errors