Description
Lazy Sudoku: Work Smarter, Not Harder
Tired of sudoku apps cluttered with ads, poor visual aids, and no explanations for advanced techniques? Lazy Sudoku is built for serious solvers who want sophisticated analytical tools without the frustration.
What Makes Lazy Sudoku Different:
30+ techniques including AICs, ALSs, finned fish, and forcing chains
Natural Apple Pencil input with gesture recognition
Scan puzzles from anywhere with on-device OCR
Automatic pencil marks and pattern detection
Query all available moves at any point
Three-level hint system with detailed visual analysis
Shape-coded chain endpoints for accessibility
Multi-game save system per difficulty level
Built-in puzzle editor with real-time validation
Advanced Techniques That Matter
From basic candidates to exotic patterns, Lazy Sudoku recognises and explains the techniques that solve challenging puzzles:
Alternating Inference Chains (AICs) with groups, ALSs, and URs
Almost Locked Sets and Death Blossom
Fish variations: X-Wing, Swordfish, Jellyfish, finned and sashimi
Forcing chains: digit, cell, unit, and Nishio
XY-Chains, WXYZ-Wings, and rectangle eliminations
BUG, Unique Rectangles, and extended patterns
Interactive examples embedded in documentation show exactly why each technique works.
Let the App Handle the Tedious Work
Why waste time managing pencil marks manually? Lazy Sudoku automatically maintains candidates, highlights patterns, and visualises chains—so you can focus on the satisfying logic instead of bookkeeping.
Automatic pencil marks kept perfectly synchronised
Auto-highlighting of naked and hidden candidates
Multi-digit filtering to focus on specific candidates
Browse all available techniques without waiting for rare patterns
Sophisticated Hint System
Choose your level of assistance: subtle nudges, clear highlighting, or detailed analysis with links, graphs, kill zones, and grid annotations showing exactly why techniques work.
Natural Tablet Experience
Write numbers directly with Apple Pencil using gesture recognition. The specially designed layout keeps controls accessible but out of the way—perfect for natural pen-and-paper solving.
Get Puzzles Your Way
Built-in editor with real-time validation (unique/multiple solution detection), paste forum format text, or scan from anywhere with on-device OCR. Handles perspective distortion, curved pages, standard fonts, and even some handwriting. Edit against background image to correct errors.
Manage Multiple Games Intelligently
Unlike apps that save one puzzle, Lazy Sudoku manages multiple games per difficulty level—current game plus unlimited abandoned puzzles you can return to later. Custom puzzles and favourites work the same way.
Interactive Documentation
Learn techniques with embedded puzzle widgets, step-through demonstrations, and curated examples.
Premium Experience, No Compromises
Completely ad-free, clean interface, left-handed mode on all devices, native on iPhone/iPad/Mac. Designed by a developer with 25 years of experience.
Who Is This For?
Solvers who know their way around AICs and fish patterns, want to learn advanced techniques with clear explanations, and value analytical tools over casual gameplay.
This isn't a casual puzzle game—it's a sophisticated analytical tool that respects your intelligence and your time.
Download Lazy Sudoku and experience sudoku the way it should be: challenging, educational, and free from distraction.
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/