THE PLAYBOOK · YINGONG123
How to play Nurikabe
A round of Nurikabe at YINGONG123 begins with understanding the objective. Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block. The learning focus here is mistake-aware practice, supported by the rule notes below.
Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
Mistake-aware practice
Read the common mistake below before starting. Watch for that situation during the round rather than relying on trial and error.
Your goal
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
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.
A useful example
An island labelled 1 is already complete, so its edge neighbours must be sea.
Watch out for this
Two numbered islands may not merge into one.
Common questions
What completes a round?
Create one connected sea around numbered islands of exactly the stated size, without a 2×2 sea block.
Which controls should I use?
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
What can I play here?
Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.
Does play involve an account or cash?
No. Play is free, without registration, deposits, bets or cash prizes.