Learn the three basic line patterns
The easiest deduction appears when two identical symbols sit next to each other. A third matching symbol cannot extend that run, so any open cell immediately before or after the pair must be the opposite. The second pattern is a sandwich: if two matching symbols have one empty cell between them, the middle must be the opposite. These patterns work horizontally and vertically and should be your first full-board scan.
The third pattern comes from balance. On a six-cell row, once three suns are present, every remaining cell must be a moon; the reverse is also true. Count completed and potential symbols rather than waiting until only one cell remains. Pair rules and balance often combine: a forced moon may complete a sandwich in its column, which then forces a sun elsewhere. Tango’s satisfying chains usually begin with one of these elementary shapes.





