Queenmoss

Queenmoss is a logic puzzle of the crowns family. Place one crown in every row, every column and every coloured region, and never let two crowns touch, not even diagonally. Every puzzle is generated with exactly one solution, checked by a solver, and can be solved by deduction alone. A new daily puzzle grows from the date and keeps a streak and a timer; an archive holds 40 more from 6x6 to 10x10. Mark cells with X, let auto-X cross out what each crown rules out, and ask for a hint that explains one logical step. It plays in the browser with a keyboard, mouse or touch.