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The board is hidden while the clock is stopped. Fair play for everyone.
Pick a level, then press Play. Or try the Daily Puzzle.
👆 Tap a cell: sun, then moon, then clear • An = mark means the pair matches, a × mark means the pair differs • Check and Hint are limited — spend them well
A tango game you can play right here, free — with no daily limit. This is Sun and Moon Tango, an original GameOLL logic game. You fill a 6 by 6 grid with suns and moons. Three simple rules run the whole board, and small marks between the cells give you extra clues. Every puzzle has exactly one solution, proven by a solver before it joins the bank. No download. No sign-up. It works on your phone and your PC.
Some puzzle apps give you one board a day and ask you to come back tomorrow. Here the boards are unlimited, on three levels of difficulty. Finish one and the next is one tap away. A shared Daily Puzzle is here too, for the days when you want the same board as everyone else — but it is a bonus, never a gate.
Genre
Puzzle · Logic
Players
1 Player
Platform
Browser · Mobile · PC
Price
Free
In this guide
- How to play
- The three rules, in plain words
- Levels, score and your records
- 7 solving tips
- Sun and Moon Tango FAQ
- Final verdict
How to play Sun and Moon Tango
The board starts with a few suns and moons already printed on it. Those printed symbols are fixed clues and can never change. Every other cell is yours to fill. Somewhere inside the rules there is one — and only one — finished grid that fits.
- Pick a level — Easy, Medium or Hard — and press Play. A fresh board appears, and the clock and the score start.
- Tap a cell once to place a sun. Tap it again for a moon. Tap a third time to clear the cell and start it over.
- Cells with a dark purple back are printed clues. They are part of the puzzle, and tapping them changes nothing.
- Watch the little purple badges that sit on some edges between two cells. An = badge means the two cells must hold the same symbol. A × badge means the two cells must hold different symbols.
- Symbols that break a rule glow red at once: three of a kind touching in a row, a fourth sun in a line that is only allowed three, or a pair that disobeys its edge mark. Red means think again — the game never lets a wrong board look finished.
- Stuck? Tap Check and the game clears every symbol you placed that is not part of the solution, and tells you how many were wrong. You get 3 checks per puzzle.
- Truly walled in? Tap Hint. The game locks one true symbol onto the board with a gold frame. You get 3 hints per puzzle.
- Fill the last cell with no red glow anywhere and the puzzle is solved. Your score is counted, your best score is saved, and your win streak grows.
Checks and hints never solve the puzzle for you. A check only clears symbols that are wrong. A hint places a single symbol. The thinking in between is all yours, which is exactly why finishing feels good.
The three rules, in plain words
Rule one: never three in a row. No three suns and no three moons may sit side by side in a row or in a column. Pairs are fine. Triples are not. This one rule does more work than you would guess: the moment you see two of a kind together, the cells on both ends of the pair are forced to be the other symbol.
Rule two: every line holds three and three. Each row and each column must end with exactly three suns and exactly three moons. So when a line already holds three suns, every empty cell left in that line must be a moon. Counting is the engine of the whole puzzle — keep a running count in every line you touch.
Rule three: obey the edge marks. Where two neighbour cells carry an = badge, their symbols match. Where they carry a × badge, their symbols differ. A mark is a promise the puzzle makes to you, and it cuts both ways: fill one side of a marked pair and the other side is decided for you — the same symbol across an = mark, the opposite symbol across a × mark.
One more promise sits under every board: each puzzle has exactly one solution. The bank was built by filling a full grid that obeys all three rules, choosing edge marks that are true of that grid, and then removing symbols one at a time — and a removal only stayed if a solver could still find just one finished grid. So the answer is always there, logic alone can always find it, and you never have to guess.
Controls for phone and PC
| Action | Phone / tablet | PC / laptop |
|---|---|---|
| Place a sun | Tap a cell once | Click a cell once |
| Change it to a moon | Tap the cell again | Click the cell again |
| Clear the cell | Tap the cell a third time | Click the cell a third time |
| Check your symbols | Tap Check | Click Check, or press C |
| Use a hint | Tap Hint | Click Hint, or press H |
| Pause the clock | Tap Pause | Click Pause, or press P |
Pausing hides the board. That is fair play: nobody can study the marks while the clock is stopped, and nobody can peek at your screen either.
Levels, score and your records
The three levels use the same 6 by 6 grid and the same three rules. What changes is how much the board gives you for free. Easy boards start with more printed clues. Hard boards start with barely a handful, so the edge marks and the counts have to carry the solve.
| Level | Printed clues | Edge marks | Best for |
|---|---|---|---|
| Easy | About 14 | 12 | Learning the rules and quick morning solves |
| Medium | About 10 | 9 | A real puzzle that still moves fast |
| Hard | About 6 | 7 | Long chains of logic and a genuine fight |
How scoring works. Every puzzle starts at 1,000 points. Each second on the clock costs 2 points. Each check you spend costs 100 points, and each hint costs 150 points. The score never drops below zero, and the bar at the top of the game shows it live as you play. Your best score for each level is saved.
The Daily Puzzle is one shared Medium board built from the date itself, so every player in the world gets the same grid on the same day. Finish it and your daily streak grows. But the daily is a spice, not the meal: normal play is unlimited on all three levels, all day, every day.
Your records live in your browser. The game keeps puzzles played and won on each level, your best score on each level, your day-by-day win streak, and your daily streak. Nothing is uploaded and no account is needed. Come back tomorrow and your streak is still waiting.
7 solving tips that actually work
- Close every pair. Two suns side by side force the cells at both ends of the pair to be moons, and two moons force suns. The same holds with one cell between them: sun, gap, sun means the gap is a moon. Sweep the whole board for pairs before anything else.
- Count to three. The moment a row or column holds three of one symbol, fill every empty cell in that line with the other symbol. It is the most common free move in the game, and it often sets off a chain.
- Follow the marks. An = badge copies a symbol across. A × badge flips it. When you fill a cell that touches a mark, fill its partner at the same moment. Letting a marked pair sit half-decided is how mistakes sneak in.
- Work the fullest lines first. A line with four or five cells filled is close to giving up its secrets. Lines with one or two fills can wait — they will be easier once their neighbours are known.
- Think in both directions. Every cell lives in one row and one column at once. A move that looks quiet in its row can be the key that finishes its column. When a row stalls, scan the columns.
- Never guess a symbol. A guessed symbol that happens to fit can still be wrong, and it poisons every step built on it. This puzzle always gives you a logical next move. If you cannot find one, scan again — or spend a check instead of a guess.
- Spend checks late, hints later. A check is worth most when the board is nearly full and one wrong symbol blocks the finish. A hint is worth most when two full minutes of scanning find no forced cell at all.
Is Sun and Moon Tango free and safe to play?
Yes. The game is free. It runs fully inside this page. It asks for no name, no email and no account. It installs nothing on your device. Your records and streaks stay in your browser only.
Sun and Moon Tango is an original game made by GameOLL. It belongs to the classic binary-puzzle family: balance the two symbols, avoid three in a row, and honour the marks between cells. The puzzles on this page were generated for this game and proven on a solver before they joined the bank, so every board here is fixed, fair and always ready.
More games and guides on GameOLL
- Want every game in one place? Visit our Play Games page.
- Love pure grid logic? Play Sudoku Master, our sudoku game.
- Chase the big tile in Tile Merge 2048, our 2048 game.
- Prefer careful deduction? Play Minesweeper, our minesweeper game.
- Guess the hidden word in Word Guess, our wordle game.
- Out-think a four-level ladder in Checkers Master, our checkers game.
Sun and Moon Tango FAQ
Is Sun and Moon Tango free to play?
Yes. Sun and Moon Tango is 100% free. You play it right on this page. There is no download, no sign-up and no payment.
How many puzzles can I play each day?
As many as you like. Puzzles are unlimited on all three levels. Some puzzle apps allow one board a day, but here a fresh board is always one tap away. The Daily Puzzle is an extra shared board, not a limit.
Does every puzzle have exactly one solution?
Yes. Each puzzle began as a full grid that obeys all three rules. Edge marks true of that grid were added, and symbols were then removed one at a time. A solver checked the board after every removal, and a removal only stayed while exactly one solution remained.
What do the equals and cross marks mean?
An equals mark between two cells means the pair holds the same symbol: two suns or two moons. A cross mark means the pair holds different symbols: one sun and one moon. Fill one side of a marked pair and you know the other side at once.
How does scoring work?
Every puzzle starts at 1,000 points. Each second costs 2 points, each check costs 100 points and each hint costs 150 points. The score never falls below zero. Your best score on each level is saved in your browser.
Can I play Sun and Moon Tango on my phone?
Yes. The board is built for touch. Tap a cell once for a sun, again for a moon, and a third time to clear it. It also works with a mouse and a keyboard on laptops and desktop PCs.
Final verdict: should you play Sun and Moon Tango?
Yes — if you like calm logic puzzles with sharp little rules. Sun and Moon Tango gives you a fair board every time: three rules you can learn in a minute, edge marks that reward close reading, one true solution on every board, and no daily cap standing between you and the next puzzle. Easy teaches the dance. Hard makes you earn every step. Pick a level, and start pairing suns with moons.
▶ Play Sun and Moon Tango 🎮 See All Free GamesLast updated: November 5, 2026. Sun and Moon Tango v1.0 — the first release of our original sun-and-moon logic game, with a solver-proven puzzle bank, three difficulty levels, limited checks and hints, a daily puzzle and saved records. An original GameOLL browser game. Found a bug? Tell us in the comments and we will fix it in the next version.
