Nurikabe blog
Lore, history, and guides for Nurikabe fans. New here? Start with the yokai behind the puzzle, then explore the rest. Prefer to just play? Jump in below.
What Is a Nurikabe? The Yokai Behind the Puzzle
What does \"nurikabe\" mean? It's a yokai from Japanese folklore: an invisible wall that blocks travellers at night. Here's the spirit behind the puzzle and how the name fits.
Nurikabe vs Hitori: Two Nikoli Shading Puzzles Compared
Nurikabe vs Hitori: both are Nikoli shading puzzles where you blacken cells, but they work very differently. Here's how the rules, the feel, and the difficulty compare.
Puzzles Like Nurikabe: Japanese Shading & Island Puzzles
Love Nurikabe and want more? Here are puzzles like Nurikabe — Japanese shading and region puzzles from Hitori to Nonograms — and what makes each a great next challenge.
The History of Nurikabe: Nikoli's Island Puzzle
The history of Nurikabe: how the Japanese publisher Nikoli created this island-and-sea puzzle in 1991, what its names mean, and how it spread worldwide as a logic classic.
What Makes a Nurikabe Puzzle Hard?
What makes a Nurikabe puzzle hard? Grid size, how tightly the islands are packed, and the dual sea-and-island connectivity all play a part. Here's what separates an easy grid from a brutal one.
Nurikabe Variants: Beyond the Classic Island Puzzle
Nurikabe has a rich family of variants — Nuribou, Mochikoro, pentomino, coded and toroidal versions. Here's a tour of the most interesting Nurikabe variations and how they change the puzzle.
Do You Have to Guess in Nurikabe?
Do you have to guess in Nurikabe? No — a well-made Nurikabe is solvable by logic. Here's why, and how connectivity and the 2×2 rule force the next move when you're stuck.
How Nurikabe Puzzles Are Made (and Why They Have One Solution)
How are Nurikabe puzzles made? Inside the construction process: placing island clues, carving the sea, and verifying a single solution that stays connected and avoids 2×2 pools.