Solsticio Daily Puzzle for Friday, September 18, 2026
Today's board is the same for everyone, everywhere. Solve it, keep your streak, and share your time — no spoilers.
Difficulty: Hard · 6×6
How today’s board is solved
Step by step, with no guessing. Every move below follows from the ones above it.
This board needs 29 deduced moves: 19 × no-three-in-a-row, 6 × line balance and 4 × contradiction.
Careful: this is the full reasoning. Play first if you would rather work it out yourself.
- B1 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
- E3 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
- B4 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
- A4 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
- D4 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
- B6 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
- A2 — putting a moon there breaks the board a few moves later, so it is a sun
- F2 — putting a moon there breaks the board a few moves later, so it is a sun
- C1 — putting a sun there breaks the board a few moves later, so it is a moon
- D1 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
- A1 — putting a moon there breaks the board a few moves later, so it is a sun
- A3 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
The remaining 17 moves follow the same way.
Three simple rules
- No three in a rowNever three suns or three moons in a line, across or down.
- BalanceEvery row and column holds the same number of suns and moons.
- Connectors (= and ×)Later puzzles add clues between cells — same or different.