Sudoku Lumo - Number Puzzle

Sudoku the way it should be: a clean, calm board, puzzles you can actually finish, and hints that make you a better player instead of just handing you the answer. Every puzzle is generated with exactly one solution and hand-tuned to its difficulty, so you always get a fair, satisfying solve — never a lucky guess. WHY YOU'LL LOVE IT • Three grid sizes — 4x4 and 6x6 for a quick warm-up, classic 9x9 for the real thing. • Three difficulties — Easy, Medium, and Hard, tuned to the techniques each puzzle actually needs. • Smart hints that teach — every hint names the real solving technique behind it (Naked Single, Hidden Single, Pointing Pair, X-Wing and more), so you learn as you play. • Pencil notes — jot candidates into any cell, with automatic clean-up as you place numbers. • Undo, redo & erase — experiment freely and step back anytime. • Check your board — spot mistakes on demand before…