What difficulties does Schoolyard include?

Choose Very Easy, Easy, Medium, Hard, or Hardest. Each level uses its own clue and difficulty profile.

Do I need an account for Schoolyard?

No. The game works without an account and saves the current puzzle locally on this device.

Beginner

Classic mini Sudoku

Place 1–4 once in every row, column, and 2×2 classroom.

Puzzle setup

Select a difficulty to prepare your Schoolyard adventure.

How this world works

Learn classic Sudoku with numbers 1–4. Place 1–4 once in every row, column, and 2×2 classroom.