Tactics

What is a interpose in chess?

  • Tactics
  • Forcing
  • Pattern

Interpose is a tactical concept: to move a piece between an attacking piece and its target, blocking the line or diagonal of attack. Interposing is not possible if the attacker is a knight, king, or pawn, thus only possible in case of attacking rooks, bishops, or queens. Interposing a piece is one of the three possible responses to a check. Do not stop at naming the motif; calculate the forcing line that makes it work.

What to look for on the board

  • Checks, captures, and threats.
  • Loose pieces and unsafe kings.
  • A forcing sequence, not just a pattern name.

interpose FAQ

What is a interpose in chess?

Interpose is a tactical concept: to move a piece between an attacking piece and its target, blocking the line or diagonal of attack. Interposing is not possible if the attacker is a knight, king, or pawn, thus only possible in case of attacking rooks, bishops, or queens. Interposing a piece is one of the three possible responses to a check. Do not stop at naming the motif; calculate the forcing line that makes it work.

How do you spot a interpose on the board?

Look for: Checks, captures, and threats.; Loose pieces and unsafe kings.; A forcing sequence, not just a pattern name..

What is the most common mistake with a interpose?

Recognizing the motif but failing to calculate the opponent's best defense.

How do you get better at using a interpose?

Use the term to identify why the tactic works, then calculate the forcing line.

Train this pattern on your own games

Reading a definition is not the same as spotting the pattern with a clock running. Chessiro's free game review runs Stockfish 18 over every move you play, names the concept behind each mistake, and turns the positions where it cost you into training puzzles. You can also see the idea in action in the classic games collection, where the greatest players in history demonstrate it.

Related terms

Free game review

See where interpose decides your games

Chessiro reviews your games with an AI coach that names the concept behind every mistake, then drills you on the exact positions where it happened until you stop repeating them.