Medium boards

7×7 · 12 to 18 bulbs · two to four minutes

The everyday board, and the size of the daily. Enough room for the circuit to branch, short enough to finish on a coffee break.

What to expect

A 7×7 grid: 49 tiles, one power source, 12 to 18 bulbs.
Par (the fewest possible quarter turns) is usually 35 to 50. Match it for a Perfect badge.
Every board has a link. Send yours and your friend plays the exact same scramble.

Lock tiles you are sure about (hold or right-click) so you stop turning them by accident.
Work outward from the powered region; a lit wire tells you which neighbours must connect to it.
There are never loops. If a move would close a loop, it is wrong.

Prefer a shared board? Try today's daily, the same puzzle for everyone with a leaderboard.