What is Double check in chess?
Two pieces give check at the same time via a discovered attack.
The only legal response to a double check is to move the king - you can't block or capture both checkers - which makes it one of the most powerful tactics in chess.
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- ZugzwangA position where any move you make worsens your position.
- En passantA special pawn capture of a pawn that just advanced two squares.
- CastlingA move that tucks your king to safety and activates a rook.
- FianchettoDeveloping a bishop to the long diagonal from b2, g2, b7, or g7.
- GambitSacrificing material, usually a pawn, for faster development or attack.
- StalemateA draw where the player to move has no legal move and isn't in check.