What difficulties does Engineering Lab include?

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

Do I need an account for Engineering Lab?

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

Expert

Thermo Sudoku

Values strictly increase from each thermometer bulb to its tip.

Puzzle setup

Select a difficulty to prepare your Engineering Lab adventure.

How this world works

Increase values along thermometer paths. Values strictly increase from each thermometer bulb to its tip.