carmoku

Carmoku is a Sudoku that teaches you to reason instead of guessing. LEARN THE TECHNIQUES The Academy explains 14 solving techniques, step by step, on a real board — from Naked Single to Simple Coloring. And if you get stuck in a game, the "i" shows you the techniques that puzzle needs. CLIMB THE CAREER Seven levels, from Beginner to Extreme, with five puzzles to unlock each one. Or play freely at any level you like. A CHALLENGE EVERY DAY The same puzzle for everyone, in a calendar that marks the ones you've done. Catch up on days you missed, earn achievements for consistency and compare your time on the daily leaderboard. COMPETE, IF YOU WANT Leaderboards by level, by country and by week, with seasons. PLAY YOUR WAY Notes cleared automatically when you get it right, unlimited undo, hints that explain why, three themes (Light, Dark and Paper), adjustable text size and colour-blind friendly colours. Works offline. Free, with ads between games. A single purchase removes them forever.