Free
In-App PurchasesWith Ads
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About
One board. A little daily logic.
Kanharu is a Queens puzzle game with simple rules and satisfying deductions. Solve today's challenge, then keep exploring with 100 practice puzzles.
THREE SIMPLE RULES
• Place exactly one queen in each row.
• Place exactly one queen in each column and colored region.
• Queens must not touch, even diagonally.
YOUR DAILY CHALLENGE
Take on the day's puzzle and build your streak. Everyone receives the same board for the same local calendar date. Replay completed Daily puzzles to improve your personal best.
ROOM TO THINK
Double-tap to place or remove a queen. Tap or drag to mark cells with ×. Undo your moves or clear your notes as you explore the board. Conflicting queens are highlighted, and there is no mistake limit.
KEEP PRACTICING
Explore 100 practice puzzles with boards ranging from 4×4 to 10×10.
FOCUS ON THE PUZZLE
Soft colors, crown pieces and short sound cues keep the experience simple. Sound and haptics can be turned off in Settings.
No sign-up is required. English, Korean and Japanese are supported based on your device language.
Kanharu is free to play and includes banner and full-screen ads. An optional one-time purchase removes all ads. Purchase and Restore Purchase are available in Settings.
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What's New in Kanharu
1.6.0
September 21, 2026
Ruffdoku is now Kanharu! • A new puzzle-focused look, with crown pieces, a redesigned icon and new sound effects. • Freely place queens and use conflict highlights to guide your reasoning. • No more lives or mistake limits. • Undo both queen placements and notes. Clear notes without removing your queens. • A dedicated Daily puzzle collection, separate from the 100 practice puzzles. • Updated ad placements. The optional Remove Ads purchase removes all banner and full-screen ads.
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Subscriptions & In-App Purchases
$2.99
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