0h n0

Use numbered dots to work out what each dot can see.

0h n0 Introduction

What it does

0h n0 is Q42's companion to 0h h1, inspired by Kuromasu. Work out which dots must be blue and which must block the view.

Getting started

Blue dots see other blue dots along their row and column. Their numbers state how many they see; red dots interrupt that line of sight.

Pricing and limitations

Free play and daily puzzles are available on the official site. Optional sign-in features are separate from solving a board.

Sources and review

GameNubi editorial listing. Information checked against the official website on 2026-10-19. Features and allowances may change; check the provider's current terms before signing up.

Frequently asked questions

What is 0h n0?

Use numbered dots to work out what each dot can see.

What is the pricing model?

Free. Check the official website for current plans, limits and pricing.

Which platforms does it support?

Web

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