Kuadra — Shikaku Puzzle

Kuadra is a beautifully simple Shikaku puzzle — divide the grid into rectangles, one number at a time, and quiet your mind while you do it. The rules take ten seconds to learn and a lifetime to master. Every grid has exactly one solution: split it into rectangles so each contains a single number, and that number equals the rectangle's area. No guessing, no luck — just pure logic. WHY YOU'LL LOVE IT • 10,000 handcrafted puzzles across 100 packs, from gentle 5x5 grids to expert challenges • A fresh Daily Challenge every day, with streaks to keep your run alive • Global leaderboards — compare your solve times and climb the ranks • Three game modes and difficulty tiers for every skill level • Undo, redo, and pencil notes so you can think it through • Progress, stats, and 16 achievements to chase BUILT TO RELAX No timers forcing your hand, no clutter, no noise. Play one quick puzzle on a coffee break or lose an hour in a long session — Kuadra meets you where you are. Haptic feedback and clean, calm visuals make every solve satisfying. PLAY YOUR WAY • Six themes, including light and dark • Accessibility built in: large text and high-contrast options • Plays fully offline — no connection required • Optional sign-in to sync your progress across devices Whether you love Sudoku, nonograms, or just a good logic workout, Kuadra is your next daily habit. Download it free and solve your first grid in seconds.