About Light Switch #837
Light Switch #837 was the puzzle for Saturday, October 17, 2026, a medium one: 15 lights on, 7 presses at best. Everyone who played Light Switch that day got the same puzzle, and it stays here to play for 60 days.
New to Light Switch? The rules, tips and common questions are on the Light Switch page, and Light Switch Guide: Chase the Lights to Zero goes into strategy.
Other days of Light Switch
- Light Switch #840, Oct 20
- Light Switch #839, Oct 19
- Light Switch #838, Oct 18
- Light Switch #836, Oct 16
- Light Switch #835, Oct 15
- Light Switch #834, Oct 14
- Today’s puzzle, #851
Every day of the last 60 is in the puzzle archive.