---
title: 'How to Play Sudoku on Cosmos Video'
description: 'Step-by-step rules for playing Sudoku in a Cosmos Video space.'
url: '/product/team-building-games/how-to-play-sudoku.md'
lastModified: '2026-04-21'
contentType: 'Game Rules Guide'
keywords: ['how to play sudoku', 'sudoku rules', 'remote team games']
target_audience: 'remote teams, team leads, players'
---

# How to Play Sudoku on Cosmos Video

Sudoku on Cosmos Video is a solo number puzzle you can play at a game table inside any space, then share scores with teammates to crown a Sudoku champion. It supports easy, medium, and hard difficulties, with built-in hints, notes, and real-time error detection.

## Rules

1. Fill every row, column, and 3x3 box with the digits 1 through 9, each exactly once.
2. Select a difficulty. Harder modes start with fewer pre-solved numbers.
3. Use the notes feature to pencil in candidates for a cell.
4. Use hints sparingly; they cost points toward your final score.
5. Incorrect placements are highlighted in red so you can correct them.
6. Finish the grid as quickly as possible, with the fewest errors and hints.
7. Share your time and score with the team to compare results.

## Setup in Cosmos Video

1. Enter a public Cosmos Space or create your own.
2. Approach a game table with the gamified appearance.
3. Press X on the keyboard, or click Games in the toolbar.
4. Select Sudoku and pick easy, medium, or hard.

## Tips for Groups

- Run a weekly shared-difficulty Sudoku sprint and post times in chat.
- Start on easy to learn the interface before stepping up.
- Use notes early; they make the mid-game much faster.
- Avoid hints if you want the cleanest comparable score.

## Frequently Asked Questions

**What is the minimum and maximum player count?**
Sudoku is single-player per puzzle, but any number of teammates can play in parallel and compare scores.

**How long does a round take?**
Easy puzzles take 5 to 10 minutes. Hard puzzles can run 20 to 40 minutes.

**Can spectators watch?**
Yes. Teammates in the same Cosmos Video space can watch your board as you solve.