Nanoduko

Welcome to Nanoduko — a crisp, modern take on classic Sudoku. Choose your challenge (Easy, Medium, or Hard), race the clock, limit your mistakes and climb the monthly leaderboard. How to Play: 1. Fill the 9×9 grid so each row, column, and 3×3 box contains digits 1–9 with no repeats. 2. Use notes, logic strategies, and time management to improve your rank. 3. Each mistake counts — cleaner solves earn better leaderboard positions.