Kuadra — Shikaku Puzzle

Fluttech

About this game

Kuadra is a beautifully simple logic puzzle based on the Japanese classic Shikaku. Divide the grid into rectangles so that each contains exactly one number — and that number is the rectangle's area. One solution. Pure deduction. No guessing.

Whether you have two minutes or twenty, Kuadra is the puzzle game that fits your day. No timers nagging you. No clutter. Just you, the grid, and a quiet little "aha" every time a piece clicks into place.

A puzzle for sharp minds
• Hundreds of hand-tuned puzzles across multiple difficulty levels
• Easy to learn in 30 seconds, deep enough to keep you thinking for years
• Trains logic, spatial reasoning, and pattern recognition
• A real workout for your brain — without ever feeling like one

Designed to feel good
• Minimalist, modern visuals that get out of your way
• Smooth, satisfying touch controls
• Soft sounds and gentle animations — never noisy, never busy
• Light and dark themes

Play your way
• Pick up where you left off across sessions
• Smart hints when you're stuck (use them sparingly — the best moments come from solving it yourself)
• Daily challenges to build a streak
• Quests and milestones that reward your consistency, not your spending
• Compete on the leaderboards and chase your personal best

Whether you love Sudoku, KenKen, Nonograms, Picross or any other number/logic puzzle — if you enjoy the quiet satisfaction of pure deduction, Kuadra was made for you.

Download Kuadra and rediscover what a puzzle game should feel like.

What’s new

• Reactions on the leaderboard now sit in one compact pill instead of a row
of separate chips, so player names stay readable no matter how many people
react. Tap the pill to see who sent what.
• On the Daily tab, tap any leaderboard row to open the full leaderboard.
Press and hold a row to send a reaction, as before.
• Behind-the-scenes updates for smoother, more reliable play.