What is it called when the king is under attack?

Check.

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  1. Castling
  2. Check ✔
  3. Stalemate

Why: When the king is under immediate attack, it is in check.

Huh, didn't know that: When the king is under immediate attack, it is in check.

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References

Answer: Check. When the king is under immediate attack, it is in check.

  1. Chess en.wikipedia.org/wiki/Chess
    When a king is under immediate attack, it is in check.
    Checked 2026-11-07.

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