Sudosmith: Sudoku Race

Sudosmith is Sudoku with a friend on the line. RACE THE SAME BOARD Challenge a friend by link, QR, or a short code. You both get the exact same puzzle, dealt by the server, and solve it privately — first correct solve wins. Their grid never shows: you see progress, boxes, and mistakes, never a single digit. No spoilers. SOLO, YOUR WAY Unlimited classic 9×9 boards at four difficulties — Easy, Medium, Hard, Expert. Pencil-mark notes, an optional mistakes limit, and a quiet timer you can hide. OPTIONAL CONTENT (FOREVER UNLOCKS) Extra Grids: Mini 6×6, Mega 12×12, and Ultra 16×16 solo (hex digits 0–9 A–F). Logic Variants on 9×9: Diagonal, Even–Odd, and Hyper. Difficulty is never paywalled. Host needs a pack to create a pack race; guests always join free. A CALM DAILY One classic 9×9 board a day, the same for everyone — packs never touch the Daily streak. No lives, no streak-freeze store, no pressure. ON-DEVICE STATS Best times per difficulty (classic-scoped), Daily streak, and your race record — all kept on your device. No account. No leaderboard servers. FAIR BY DESIGN Free 9×9 forever. Guests always join free. Rematches never ad-taxed. No ads on wins. Same board. Solve it first.