Free brain-training game
About Circuit Lab
Adjust switches to satisfy AND, OR and XOR circuits. Every target can be reached. Twelve puzzles per session, unlimited adjustments and no timer.
How to play Circuit Lab
- 1Adjust switches to satisfy AND, OR and XOR circuits. Every target can be reached.
- 2Read the rules before your first move, then use the on-screen controls to test your plan.
- 3Complete puzzles to earn stars. You can finish and save your session whenever you want.
What Circuit Lab trains
Practise deliberate reasoning, keeping clues in mind and checking a plan before you commit.
Learn about Working Memory Games for Adults: Recall and Updating Tasks →Tips & strategy
- Use all the clues, and check the whole board before submitting.
- There is no speed bonus, so take the time you need.
Frequently asked questions
Is there a timer?
No. These puzzles reward deliberate reasoning. Sessions end after twelve puzzles, or when you choose Finish & save.
How do stars work?
Solve 1, 3, 5, 8 or 12 puzzles in one session to earn up to five stars. Your best progress is kept.