THE PLAYBOOK · LYSTDQ
A practical guide to Nurikabe
Use a short break to learn the rhythm of Nurikabe. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Choose a clear next step rather than rushing through the instructions. Identify the playing area and the controls you need. Choose a clear next step rather than rushing through the instructions.
Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
Build familiarity through play
After a move, check what changed. Decide which rule explains the new state before acting again. Refer to the controls when needed.
The challenge in front of you
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. Keep that objective in view throughout the round. Return to the instructions when a step is unclear.
The playing sequence
- 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.
How to use the controls
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. Look at the feedback after the action.
See how the rules apply
An island labelled 1 is already complete, so its edge neighbours must be sea. Apply the same reasoning to the position in your own round. Keep the controls nearby.
Pay attention to this rule
Two numbered islands may not merge into one. A different version of the game may use a different rule. Read one step at a time and try it on the playing area. Match the instruction to the control you use.
A few questions answered
What is the goal of Nurikabe?
Here is the relevant explanation: Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
While reading the Guide, 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.
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.
When I return, what should I watch out for in Nurikabe?
The key detail is this: 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.
For this browser game, 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.