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Sun & Moon #840

#840 · MediumArchive: not ranked
How to play
  • Fill every square with a sun or a moon. Tap a square to cycle sun, moon, empty.
  • Every row and every column holds as many suns as moons.
  • No more than two of the same symbol may sit next to each other in a row or column.
  • An = between two squares means they are the same; × means they are different. Fastest time wins.

Sun & Moon #840 is the puzzle from Tuesday, October 20, 2026 (medium). Archive puzzles count toward your statistics, not your streak or the leaderboard.

Archive games count toward your statistics, not your streak or the leaderboards.

About Sun & Moon #840

Sun & Moon #840 was the puzzle for Tuesday, October 20, 2026, a medium one: a 6 × 6 grid of suns and moons. Everyone who played Sun & Moon that day got the same puzzle, and it stays here to play for 60 days.

New to Sun & Moon? The rules, tips and common questions are on the Sun & Moon page, and Sun & Moon: How to Solve Binary Puzzles goes into strategy.

Other days of Sun & Moon

Every day of the last 60 is in the puzzle archive.

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