Solsticio Daily Puzzle for Monday, September 21, 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
How today’s board is solved
Step by step, with no guessing. Every move below follows from the ones above it.
This board needs 28 deduced moves: 14 × line balance, 13 × no-three-in-a-row and 1 × contradiction.
Careful: this is the full reasoning. Play first if you would rather work it out yourself.
- A3 — 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
- C5 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
- C4 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
- A6 — the two cells before it are moons, and three in a row is not allowed, so it has to be a sun
- B6 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
- B1 — that line already holds all the moons it can take, so the rest are suns
- C1 — that line already holds all the suns it can take, so the rest are moons
- B2 — that line already holds all the moons it can take, so the rest are suns
- A2 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
- D2 — the two cells before it are suns, and three in a row is not allowed, so it has to be a moon
- A1 — that line already holds all the moons it can take, so the rest are suns
The remaining 16 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.