THE PLAYBOOK · YSXBH
Nurikabe: rules and examples
Make Nurikabe your next activity in the game library. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Use the example below to understand a decision. Compare the starting position with the example in the Guide. Check the relevant rule before repeating a move.
Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
Bring this focus to a round
Read one step at a time and try it on the playing area. Match the instruction to the control you use. Make the next step deliberately.
Your goal
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Use the instructions to see which actions move you towards it. Review the board or playing area as it changes.
Follow these playing steps
- 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.
Using the playing area
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Read a button’s label before selecting it. Contact us with the game and device if a control does not respond.
Follow the example
An island labelled 1 is already complete, so its edge neighbours must be sea. Compare this with the rule that governs the move. Keep the game’s format in mind.
Where a round can go wrong
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.
Answers about the rules and controls
While learning, what is the goal of Nurikabe?
Keep this in mind: Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
For this browser game, how do I control Nurikabe?
For clarity: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
For a quick reminder, what example helps explain Nurikabe?
Here is the relevant explanation: An island labelled 1 is already complete, so its edge neighbours must be sea.
For this browser game, what should I watch out for in Nurikabe?
For clarity: Two numbered islands may not merge into one.
As a new player, what format does Nurikabe offer?
The key detail is this: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
Before I begin, which play mode does Nurikabe use?
The key detail is this: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.