Mate in 3 Puzzles
Three moves is where mating combinations start feeling like stories: a sacrifice rips the cover, a quiet move closes the escape route, and the final check lands with nothing left to answer it.
Mate-in-3 puzzles demand genuine calculation. The reply tree is too big to brute-force, so you must think in structure: which defenses matter, which merge into each other, which lose to the same finish. The signature move of the genre is the quiet second move — no check, no capture, just a piece taking away the last flight square while the opponent's counterplay arrives one tempo too late.
These puzzles also train economy. In a real game you would happily win a queen instead; in the puzzle, only mate counts, which forces you to read the position's geometry exactly — where the king can run, which squares need covering, which defender is overworked.
Start with the position's most forcing tries and work outward. When a line keeps failing by one square, look for the move order that gains a tempo, or the quiet move you rejected too early.
Solve the real-game puzzle here, then continue in the trainer at your own level.