How to play
How to Play Tango
LogicFill every cell with a sun or a moon so the grid is balanced and consistent.
Try demo puzzleRules
- Each row and column must have an equal number of suns and moons.
- You cannot place three suns or three moons in a row — horizontally or vertically.
- Signs between adjacent cells mean equal (=) or opposite (×).
- Some cells may be prefilled and locked.
Controls
- Tap a cell to cycle through sun, moon, and empty.
- Constraint signs between cells update as you fill the grid.
- Get hint suggests a logical next move with an explanation; click Apply hint to place it on the board.
- Undo reverses your last change.
- Reset clears your entries and restores the starting grid.
Tips
- If two cells are marked equal and one is a sun, the other must be a sun too.
- Watch for lines that would force three of the same symbol in a row.
FAQ
Tango questions
Quick answers about goals, rules, and controls.
Fill every cell with a sun or a moon so the grid is balanced and consistent.
Each row and column must have an equal number of suns and moons. You cannot place three suns or three moons in a row — horizontally or vertically. Signs between adjacent cells mean equal (=) or opposite (×). Some cells may be prefilled and locked.
Tap a cell to cycle through sun, moon, and empty. Constraint signs between cells update as you fill the grid. Get hint suggests a logical next move with an explanation; click Apply hint to place it on the board. Undo reverses your last change. Reset clears your entries and restores the starting grid.
If two cells are marked equal and one is a sun, the other must be a sun too. Watch for lines that would force three of the same symbol in a row.