THE PLAYBOOK · JINHUIBLIND
How to play Nurikabe
Nurikabe gives you a focused activity to play in your browser. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Look at what changes after your first action. Read the objective before making your first input. Check the relevant rule before repeating a move.
Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
A useful comparison
Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board. Keep the objective visible.
Your goal
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. The feedback beside the game helps you follow the round. Take a moment to understand the current position.
Step by step
- Shade sea squares and leave islands white.
- Every island contains exactly one clue.
- Different islands cannot meet along an edge.
- Check puzzle verifies sizes, connectivity and forbidden sea blocks.
Controls
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. On a smaller screen, keep the active part of the board within view. A new-round button replaces the current round.
A useful example
An island labelled 1 is already complete, so its edge neighbours must be sea. Compare this with the rule that governs the move. Check the stated objective.
Watch out for this
Two numbered islands may not merge into one. Compare the situation with the worked example. Before your first action, say what you are trying to achieve. Then compare the result with the goal.
Common questions
When I return, what is the goal of Nurikabe?
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
How do I control Nurikabe?
The key detail is this: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
While learning, what example helps explain Nurikabe?
Keep this in mind: An island labelled 1 is already complete, so its edge neighbours must be sea.
What should I watch out for in Nurikabe?
For clarity: Two numbered islands may not merge into one.
While learning, what format does Nurikabe offer?
Here is the relevant explanation: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
As a new player, which play mode does Nurikabe use?
The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.
