Sudoku - Classic Mind Puzzle

A clean, classic Sudoku with a fresh puzzle every day, 300 levels from Easy to Expert, and seven quick logic games for when you want a change. Free, fully offline, and no account needed. ★ PUZZLES YOU CAN TRUST Every Sudoku has exactly one solution and can be solved by logic alone, no guessing. Difficulty is graded by the solving techniques each puzzle needs, so Expert really is harder than Hard. ★ A NEW PUZZLE EVERY DAY Solve the Daily Puzzle to build your streak. A calendar shows every day you've solved, and a daily gift and five daily quests reward you for coming back. ★ 300 LEVELS, EASY TO EXPERT Climb through four tiers and earn up to three stars on every level. Finish with no mistakes and no hints for all three. ★ HINTS THAT TEACH Stuck? A hint fills the next cell and tells you why: "Only place for 7 in this row". You learn the technique instead of just getting the answer. ★ 7 PUZZLE GAMES BUILT IN • Killer Sudoku: cages show the sum of their digits • Mini Sudoku: a quick 6×6 board • Tango: balance suns and moons in every row and column • Queens: one crown in each row, column and colour • Zip: draw one line through every cell, numbers in order • Number Match: clear pairs that match or add up to 10 • 2048: slide and merge to reach 2048 ★ PLAY YOUR WAY • Pencil notes that clear themselves as you play • Unlimited undo, and mistakes shown in red • Tap a cell then a number, or hold a number and tap cells • One second chance per game after three mistakes • Pause any time; your game is saved • Green, Light and Dark themes, plus a choice of highlight colours • Sound and vibration you can switch off ★ TRACK YOUR PROGRESS Games won, win rate, best streak, total play time, best time for each difficulty and your recent games. Works completely offline. Your progress stays on your phone. No account, no sign-up.