Controls
Zen Garden Sudoku is a calm, mobile-friendly online Sudoku game with easy, medium, hard, and killer difficulties, serene audio, and an ad-light interface so you can focus on solving.
Use notes, hints, undo, and keyboard shortcuts to stay in flow, then switch to printable Sudoku PDFs when you want an offline puzzle. Every feature is designed to make Sudoku relaxing for beginners and seasoned solvers alike.
Readable fonts, a distraction-free layout, and fast-loading JavaScript keep the experience smooth. Everything works on phones, tablets, and desktops so you can solve anywhere.
Quick guides to boost your solving flow: