Beginner guide

How to Solve Nonograms

Learn the core Nonogram strategies: reading clues, filling overlaps, marking empty cells, completing lines, and switching between rows and columns.

Clue groups Overlap logic X marks Beginner friendly

Picture logic basics

What Nonogram clues mean

The numbers beside a row or above a column describe groups of filled cells. A single clue of 5 means five filled cells in a row. A clue of 3 1 means a group of three, at least one empty cell, and then a group of one.

  1. Read each line independently first. Ask where the clue groups could fit in that row or column.
  2. Look for overlaps. If every possible placement of a group covers the same cell, that cell must be filled.
  3. Mark impossible cells with X. X marks are not decoration; they prevent you from accidentally extending a group too far.
  4. Finish completed lines. When all filled cells for a row or column are known, mark the rest of that line with X.

Simple overlap example

On a 5-cell line with clue 3, the group can fit as cells 1-3, 2-4, or 3-5. Cell 3 appears in every option, so cell 3 must be filled.

1. Start with full lines

If a 5-cell row has clue 5, fill all five cells. If a line has clue 0, mark every cell in that line with X.

2. Use overlap logic

Large clues on short lines often reveal cells in the middle. This is the safest beginner technique.

3. Separate clue groups

Groups must have at least one empty cell between them. Once a group is placed, mark the separating gap with X.

4. Switch directions often

A row move can make a column clue obvious, and a column move can unlock a row. Do not solve only one direction.

5. Avoid guessing early

Most beginner and medium Nonograms can be solved by forced placements, X marks, and completed lines.

6. Check with a solver

If you get stuck, paste the clues into the Nonogram solver to see safe line-logic progress.

How to Solve Nonograms FAQ

What do Nonogram numbers mean?

The numbers describe groups of filled cells in that row or column. A clue of 4 means four filled cells together, while 2 1 means two filled cells, a gap, and one filled cell.

What is overlap logic in Nonograms?

Overlap logic finds cells that must be filled no matter where a clue group is placed within the available line.

Should beginners guess?

No. Start with full lines, overlaps, completed groups, and X marks. Guessing is usually a sign that another clue should be checked first.