Switchboard

Switchboard

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Level 1 0:00

lights — get green ones on, keep grey ones off

Select switches below, then commit

switches

needs to be on

needs to stay off

on + correct

on but wrong

Solved!

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Shown on group leaderboards. 1–20 characters.

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How to play

Each switch toggles a set of lights. Find the smallest set of switches that gets the green lights on and the grey lights off.

You have a limited number of attempts per puzzle. Tap or hover a switch to preview which lights it touches.

Daily is the same puzzle for everyone today. Create or join a group to compare daily times with friends.