Shikaku Master

Shikaku Master brings the classic Japanese logic puzzle to your phone — clean, fast, and satisfying.

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HOW TO PLAY
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Each number on the grid tells you the size of a rectangle that must contain it. Draw rectangles to cover every cell exactly once — no overlaps, no gaps. Simple rules, deep strategy.

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FEATURES
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🧩 4 Difficulty Levels
• Easy (5×5) — perfect for beginners
• Medium (7×7) — balanced challenge
• Hard (9×9) — serious puzzle solving
• Expert (11×11) — for true masters
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📅 Daily Puzzle
A new puzzle every day. Same puzzle for everyone — compete with the world.

⏱️ Timer & Best Times
Track how fast you solve each difficulty. Beat your own record.

💡 Hint System
Stuck? Your first hint is always free. Need more? Watch a short video to reveal another rectangle — no time penalty.

↩️ Unlimited Undo
Made a mistake? Undo any step without penalty.

🎨 Smooth & Clean Design
Dark theme easy on the eyes. Buttery animations, satisfying placement effects, and a crisp grid that scales perfectly on any screen size.

🔊 Subtle Sound & Haptics
Gentle tap sounds and haptic feedback make every placement feel precise and rewarding.

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WHY SHIKAKU?
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Unlike Sudoku, Shikaku is purely visual — no numbers to memorize, just shapes to fit. It trains spatial reasoning and logical thinking in short, focused sessions. One puzzle takes 1–10 minutes, making it ideal for a commute, a coffee break, or winding down before bed.

No account. No login. No ads covering the puzzle. Just pure logic.

Download Shikaku Master and start solving.