Solsticio

Solsticio Daily Puzzle for Saturday, August 15, 2026

Today's board is the same for everyone, everywhere. Solve it, keep your streak, and share your time — no spoilers.

Difficulty: Medium · 6×6

Tap a cell: empty → ☀ → ☾. Fill the grid to win.
0:00

How today’s board is solved

Step by step, with no guessing. Every move below follows from the ones above it.

This board needs 27 deduced moves: 18 × no-three-in-a-row, 6 × line balance and 3 × contradiction.

Careful: this is the full reasoning. Play first if you would rather work it out yourself.
  1. F3 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
  2. A5 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
  3. A4 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
  4. D5 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
  5. E5 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
  6. B6 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
  7. B4 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
  8. F6 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
  9. A1 — that line already holds all the moons it can take, so the rest are suns
  10. A2 — that line already holds all the moons it can take, so the rest are suns
  11. B1 — putting a sun there breaks the board a few moves later, so it is a moon
  12. C1 — putting a moon there breaks the board a few moves later, so it is a sun

The remaining 15 moves follow the same way.

Three simple rules