Tempo Chess is a fast, tactical chess puzzle game built around two main rules:
Every move you play must give check.
Captured pieces can be "dropped" onto the board to deliver check/checkmate.
Each puzzle starts from a pre-set position. Your job is to find a forced checkmate, delivering check after check while the opponent defends.
What makes it different
Checks-only puzzles: every move you make must be check (or checkmate).
Crazyhouse/bughouse-inspired drops: captured pieces can be dropped back onto the board to create new checking ideas and tactical finishes.
Keep the tempo by checking and ending in checkmate.