What's inside
The book opens with a cover and a one-page statement of the rules — two stars in every row, column and outlined region, no two stars touching — then the boards, four to an A4 page, sized for a pencil. These are the hardest boards from our hard tier, hardest first.
Every board is a released daily puzzle, checked by our solver to have exactly one solution reachable by logic alone. If you feel the urge to guess, you've missed a move — and the Expert Star Battle guide covers exactly the moves this tier asks for.