HOW TO PLAY

1. Switches on the left send a signal: on (1, glowing wire) or off (0, grey wire). Tap a switch to flip it.
2. Tap an empty gate (?) to choose a gate. Tap again for the next kind. Each gate turns the signals coming in into one signal going out.
3. Make the lamp do what the challenge says. The table shows every way the switches can be set: a ✓ means your circuit already does the right thing for that row.
4. Get every row right to finish the level. A 💡 hint shows one correct gate, but costs a star.

THE GATES

IT WORKS!