5 Nonogram Solving Techniques
Master the core habits of solving picross puzzles: complete forced lines, scan for overlaps, mark confirmed blanks, and build the picture one deduction at a time. Each guide includes a worked example and common mistakes — no guessing required.
Beginner (3 techniques)
Start here — these three techniques alone will solve most easy and medium puzzles.
Intermediate (2 techniques)
Apply these once the easy deductions are exhausted.
New to nonograms?
Start with the complete beginners guide — all 5 techniques explained in order, with worked examples. Printable as PDF.
Nonogram Tips for Beginners →How to Read These Guides
Each guide covers: when to recognize the pattern, why it works logically, a worked example, and the common mistakes that trip up new solvers. They are designed to be read in order — each technique builds on the previous one.
The fastest path: read Overlap Scanning first. It gives you the most free cells per minute of thought on any puzzle with large clues.
Frequently Asked Questions
What is the best technique for beginners?
Start with line completion and overlap scanning. Line completion handles rows where the clue fills the entire line exactly. Overlap scanning handles long clues where sliding from both sides guarantees fills in the middle. Together they unlock most of a beginner puzzle without guessing.
What order should I apply nonogram techniques?
Apply them in this order: (1) line completion, (2) overlap scanning, (3) confident marking, (4) empty-clue lines, (5) cross-reference. Repeat the cycle after each new deduction. Most puzzles resolve fully within two or three passes.
How do I solve hard nonogram puzzles without guessing?
Use cross-reference aggressively. Every filled or crossed cell on a row constrains its column and vice versa. Find the most constrained line — the one with the fewest legal arrangements — and work outward from that anchor point.
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