How to Play LinkedIn Tango

Rules

• Fill every cell with a sun or a moon.
• Each row and each column holds three suns and three moons.
• No more than two identical symbols may sit side by side in a row or column.
• Cells joined by = are the same; cells joined by × are opposite.

How the game works

Some cells start filled in. You tap the empty cells to switch between a sun and a moon, and the puzzle is solved when the whole grid follows the rules. The = and × signs between cells are extra clues that link two neighbours.

Beginner strategy

• Two identical symbols side by side must have the opposite symbol on both ends.
• A gap between two identical symbols (sun, empty, sun) must be the opposite symbol.
• Once a row or column has three suns, every remaining cell in it is a moon, and the other way round.
• Follow the signs: = copies a symbol to its neighbour, × flips it.

Common mistakes

• Checking rows but forgetting the columns.
• Reading × as different from every neighbour instead of just the one it links.
• Allowing three identical symbols in a column.

Example

In this solved 6×6 example, the shaded cells were given at the start. Every row and column holds three suns and three moons, and no symbol appears three times in a row.