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Nurikabe

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Logic & numbers
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THE PLAYBOOK · DNNINDIA

Nurikabe: learn through an example

Bring your attention to one round of Nurikabe. 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. Begin with the solo mode shown on the page. Use the example below to understand a decision.

Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.

Bring this focus to a round

Keep the stated aim separate from side details such as animation or appearance. Progress is measured by the game’s own completion or scoring rules. Use the example to check your reasoning.

The purpose of your moves

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. The example below illustrates a decision.

Step by step

  1. Shade sea squares and leave islands white.
  2. Every island contains exactly one clue.
  3. Different islands cannot meet along an edge.
  4. 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. A careful first action helps you become familiar with the layout. Return to the rules if the result is unexpected.

An example before you play

An island labelled 1 is already complete, so its edge neighbours must be sea. Use the example as a guide rather than a substitute for reading your board. Take a moment to compare.

A mistake to avoid

Two numbered islands may not merge into one. Check the rule before repeating the action. Take enough time to read a new position. If a game has a timer, learn its controls first rather than searching for them during the round.

If you are unsure

As a new player, 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.

As a new player, how do I control Nurikabe?

Keep this in mind: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.

For this browser game, what example helps explain Nurikabe?

For clarity: An island labelled 1 is already complete, so its edge neighbours must be sea.

Before I begin, what should I watch out for in Nurikabe?

Here is the relevant explanation: Two numbered islands may not merge into one.

What format does Nurikabe offer?

The key detail is this: Play ten compact 5×5 puzzles. Some boards begin with fixed shaded sea cells.

For my first round, which play mode does Nurikabe use?

Keep this in mind: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

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