Spot pieces that are attacked more than they're defended

A piece with one defender isn't automatically safe. If it's attacked twice, or attacked by something cheaper, you lose material anyway. This drill trains the counting habit: attackers versus defenders, and what each one is worth.

Try it free — no signup→

What it trains

  • Counting attackers and defenders on a square
  • Seeing when a cheaper attacker makes a defended piece unsafe
  • Judging whether a capture sequence actually wins material

How it works

  1. 01

    A position appears with several pieces in contact.

  2. 02

    Right-click every piece that would lose material if the opponent started capturing on it.

  3. 03

    Compare your answer with the engine-free solution and update your rating.

Why it stops blunders

Plenty of blunders at 1000–1400 aren't hanging pieces — they're "defended" pieces that lose the exchange count. Once counting attackers and defenders is automatic, a whole category of lost material disappears from your games.

FAQ

How is this different from the undefended pieces drill?
Undefended means zero defenders. Under-defended means there is a defender, but not enough of them — or the attacker is worth less than the piece it's hitting.
Do I need to calculate long sequences?
No. The drill is about counting and piece values, not deep calculation. Most answers come from a quick look at the square.
Is there a timed version?
Yes. Signed-in players can run it in Storm or Time Trial mode.

Five minutes. One habit. No signup.

More defense drills

See all drills →