Sudologic: Sudoku Solver

Stuck on a grid? You're missing a technique, not talent.
Snap it or play it here: see where to look, why only one digit fits, then place it.
The answer only if you ask. You finish it without guessing.

A HINT, NOT THE ANSWER
When you're stuck, get help without spoiling the grid.
• Level 1, the technique: the area to look at and the logic to find.
• Level 2, the proof: why only one digit fits.
• Level 3, the move: the cell and the digit, only if you ask for it.

YOUR PAPER PUZZLE, BY PHOTO
A newspaper or puzzle-book grid won't give in? Take a photo of it or type it in. Sudologic reads the printed digits, checks the grid has a single solution, then helps you move forward one explained hint at a time. Your photo stays on your device.

THE COMPASS
Mid-game, the Compass lights up where to look. Place a wrong digit and its row, column or box lights up. You chase the logic, not the cell.

23 SHORT LESSONS, FROM 4×4 TO 9×9
Each lesson takes about 5 minutes: observe, understand, try it right away. Start on small 4×4 and 6×6 grids, where the logic is easy to see, then spot it again in 9×9.
From hidden singles to pairs and triples, X-Wing, Y-Wing, Swordfish and Unique Rectangle.

PUZZLES AT YOUR LEVEL
• Puzzles sorted into tiers by the techniques they require, each with a single solution.
• A daily puzzle.
• Your path shows what you've mastered, what's in progress and what to review.

A CALM GAME
• Bauhaus-inspired design: clean shapes, bold colors, nothing to distract you.
• Play with digits, or with shapes and colors on 4×4 grids.
• No ads, no account, works offline.
• VoiceOver, Dynamic Type and Dark Mode.
• iPhone, iPad and Mac.

FREE TO START
The rules, the 4×4 chapter, the first 6×6 lessons, beginner puzzles, the daily puzzle and 3 grid analyses are free. Sudologic Complete unlocks the full path, every tier, unlimited hints, the full Compass and unlimited grid analyses: a yearly plan with a 7-day free trial, or a one-time lifetime purchase. Family Sharing included.

By deduction, not by guessing. That's Sudologic.
An app by Caliapps.

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