Free printable · Answer key included
Printable 9x9 Nurikabe Puzzles (Hard)
Our biggest printable Nurikabe puzzles. A 9x9 grid takes patience and careful bookkeeping, so it suits experienced solvers who want a full page to work through.
This first pack has four Nurikabe puzzles with an answer key on the second page. Each grid has 15 to 20 numbered islands.
9x9 Nurikabe Puzzles (Hard)
logicpuzzles.ca/printable/nurikabe/hard-9x9
Puzzle 1 · #394
Puzzle 2 · #450
Puzzle 3 · #448
Puzzle 4 · #325
Answers: 9x9 Nurikabe Puzzles (Hard)
logicpuzzles.ca/printable/nurikabe/hard-9x9
Puzzle 1
Puzzle 2
Puzzle 3
Puzzle 4
How to solve
- Island sizes: Each number is part of a white island with exactly that many cells.
- One number per island: Every island holds exactly one number, and islands never touch along an edge.
- One sea: All shaded cells connect into a single group.
- No pools: No 2x2 square may be fully shaded.
Free to print and copy for home, classroom and library use. Every puzzle has one answer you can reach by logic alone.