Moodoku

Love logic puzzles but hate the numbers? Moodoku is sudoku made simple: place one cow in each row, each column, and each colored area. No two cows can touch — not even at the corners. That's the whole rulebook. No math, just the deeply satisfying click of pure deduction. EVERY PUZZLE IS FAIR. WE GUARANTEE IT. Every single Moodoku board has exactly one solution, and every one can be solved with logic alone. Our puzzle engine verifies it before a level ever reaches you — if a board would force you to guess, it gets thrown out. When you're stuck, the puzzle isn't broken. The next deduction is there. Find it. MISTAKES TEACH YOU Place a cow in the wrong spot and Moodoku shows you exactly why — the conflicting row, column, or neighbor flashes so you learn the rule, not just the penalty. And hints never silently fill in squares; they explain the reasoning, so you genuinely get better with every level. LEARN TO THINK LIKE A MASTER SOLVER Moodoku teaches one new deduction technique at a time, each introduced when you're ready and explained in plain language. Start with the basics and work your way up to boards that challenge veteran solvers. Every step up is a new way to think, not just a bigger grid. BUILT THE WAY PLAYERS ASKED - Generous hearts, not one-mistake fails - Your progress is saved mid-puzzle - Endless levels that never repeat — you'll never solve from memory - Four boosters — Hint, Reveal, Freeze, and Cross-Blast — for when you want a nudge ADS THAT RESPECT YOU Gentle ad pacing, rewarded ads that actually pay out, and a real remove-ads option — because "I'd happily pay to remove ads" shouldn't go unanswered. If you love sudoku, you'll find a fresh challenge. If you've never clicked with sudoku, this is the version that finally makes sense. And if you're a fan of queens puzzles or Star Battle, you're home. One cow per territory. Nobody touches. One perfect answer. Can you find it?