What is Removing the Defender in Chess?

Removing the Defender (or Undermining) is a tactic where you capture, distract, or drive away a piece that is guarding a critical square or another piece, leaving the target vulnerable.

Chess Tactics: Removing the Defender

Removing the Defender: Undermining the Defense

Removing the Defender (also called Elimination of the Guard or Undermining) is a tactic used to destroy the opponent's coordination. When a piece performs a vital defensive task—like guarding a piece, a mate threat, or a key square—you remove it (usually by capture) to leave the target defenseless.

Removing the Defender Examples

Removing the defender is a tactical idea where a key guarding piece is eliminated, deflected, or forced away, causing the entire position to collapse. Once the defender disappears, threats that were previously impossible suddenly work. The examples below show the most common ways defenders are removed and how this leads directly to winning material or checkmate.

1. Uhlmann vs. Schwartz

Uhlmann vs Schwartz

1.Nd5!
and black resigned due to e.g. 1...exd5 2.Bxf6 threatening both Bxe7 and Qh7 mate

2. Deflection and Interference

Kharitonov vs Petrushin

1. Rd8+
1-0 (1...Rxd8 2. Qxa1) or (1...Nxd8 2. Qf8+ Rg8 3. Qxg8 mate)

3. Deflection

Karaklajics vs Nikolics

1. Qa5
Ne8 (2.Qd8+ Nxd8 3. Na7++) 2. Na7+, Nxa7 (3. Qd8++) 3. Rd8++

4. Lalic vs. Cox

Lalic vs Cox

1.Bxe6
Nxe6 2.Rxg7 Nxg7 (2...Kxg7 3.Nxe6+) 3.Qxh6+ and black resigned due to Qh7 mate

5. Prosecuting the attack

Oral T vs Kantorik M

1.Bxd5
Nxd5 2.Qxd5 1-0 (2...,Qc7 (forced) 3. Qg5+, f6 4.Qxg7 wins)

6. Removing defenders of f7

Riasantsev vs Aseev

1. Qf6+
Nxf6 2. exf6+ Kh8 3. fxe7 Re8 4. Rxf7 Qd6 5. Be6