35 tactical patterns: forks, pins, skewers, discovered attacks and more, each taught with plain-English explanations and drilled until you spot them automatically.
Engine-verified solve lessons: learn the tactic on three, then solve seven cold.
Fork, pin, and skewer. Prove you've got them before moving on.
One piece, two targets. Find the move that hits both.
Back-rank, mate combinations, the lot. Apply, don't recite.
The back rank is unguarded. Find the move that ends it.