Tango Rules
The rules of Tango are simple, but the deductions can become deep. Unlimited Tango follows the common Tango, Binairo, and Takuzu-style logic rules used by modern sun-and-moon puzzles.
No Three Matching Symbols
Three suns or three moons cannot appear consecutively in any row or column. Two matching symbols usually force the neighboring open cell to become the opposite symbol.
Balanced Rows And Columns
Every completed row and column must contain an equal number of suns and moons. On a 6x6 board that means three of each; on 8x8 it means four of each; on 10x10 it means five of each.
Equal And X Clues
Cells connected by an equal sign must be the same symbol. Cells connected by an x must be different symbols. These clues often create the strongest early moves.
Keep playing
Return to the main game to play another verified Tango board, or browse a related guide.