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Lanternbit

Sun & Moon Tango

A 6x6 logic puzzle with one answer and no guessing

Board

Fill the grid with moons and suns. Click a cell to cycle it through empty, sun and moon. The cells the puzzle gave you cannot be changed.

Tap a cell to cycle it: empty, sun, moon.Space cycles a cell, arrows move, Delete empties, Ctrl+Z undoes.

Hint

tiringrank 505 of 36 filled

Starter puzzle for first visits

This code names this exact puzzle. Copy it to share it, or paste one below to play it.

Daily puzzle

One puzzle per day, and the same one for everyone. The date is read in UTC, so it does not change when you travel.

The same puzzle for everyone on that date, wherever they are.

Play a code

A code carries a seed and nothing else, so a code from an older engine is refused rather than quietly opening a different puzzle.

Looks like tng1AezJ_fo.

The rules

  1. Every row and every column holds three moons and three suns.
  2. Three of a kind never sit next to each other, in a row or a column.
  3. A bar means the two cells it sits between match.
  4. A cross means they differ.

moon sun

Every puzzle has exactly one answer and can be finished by deduction alone, so there is never a moment where you have to guess.