fish · 3 sizes

Octopus Nonogram

Solve the octopus picture as a nonogram in 3 grid sizes — from a 15x15 warm-up to a 60x60 board. Pick a size; progress in each one is saved separately.

Difficulty
Easy – Hard
Grids
15x15 – 60x60
Category
Fish
octopusfisheasynonogram
Time 00:00 Progress 0% Ready

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Octopus nonogram sizes

GridDifficultyFilled cellsTypical solve
15×15Easy77 of 225 (34%)about 2 min
50×50Hard749 of 2500 (30%)about 38 min
60×60Hard1070 of 3600 (30%)about 55 min

About this puzzle

Octopus 15x15 Nonogram sits in the fish theme as an easy 15x15 board. 77 of its 225 squares are filled, so it reads as a fairly balanced grid at roughly 34% coverage. The picture is left-right symmetric — solve one side and you can mirror the same logic across the centre column.

The biggest single run here is 11 cells long — fill that first and the surrounding lines fall into place faster. Expect to spend roughly 2 minutes from a blank grid to the finished picture.

How to solve this nonogram

At this size, work the longest clues first, then use the cells they force to crack the shorter lines around them. With balanced coverage, alternate between filling forced cells and ruling out empties to keep both kinds of clue moving. Spot the symmetry early and you can copy solved sections to the mirrored side instead of re-deriving them. Turn Challenge mode on for instant feedback on mistakes, or leave it off for a calmer solve.

Related

More Fish nonograms

FAQ

FAQ

Which grid sizes can I play the octopus nonogram in?

15x15, 50x50, 60x60. Smaller grids show a simpler outline and take a few minutes; larger ones add detail and turn into a longer, more careful solve.

Does this puzzle save my progress?

Yes. Your moves and timer are saved in the browser after every action, so you can close the tab and come back later without losing anything. Each grid size keeps its own progress.

How do I check for mistakes?

Tap Check any time for a manual review, or turn on Challenge mode for immediate feedback as you play.

What do the X marks do?

X marks flag cells you've proved are empty. They don't affect the solution, but they make bigger grids much easier to track.