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Place digits to complete every row, column, and region
Fill blank cells with digits ranging from 1 to 9. Each horizontal row, vertical column, and nine-cell square must contain every digit exactly once. The challenge offers four distinct tiers. Higher tiers present fewer starting clues, demanding deeper logical deduction. Success requires patience to analyze patterns and eliminate possibilities until the grid is solved.
past month, based on 1 day
Downloads
Low confidence23
From install count ÷ months since release
In-app revenue
$0
No in-app purchases
Ads
$5
$3 – $10
Estimate, ads (benchmark-based, not calibrated per app)
Total
$5
In-app + ads
Google Play only. Downloads from daily Top free ranks (or the store's install count); in-app revenue from Top grossing ranks, calibrated on AppTweak's US estimates, or else from downloads; ads from public ad benchmarks. Not reported figures.