Plus-Minus is a logic number puzzle. The game board is a square grid, and some cells may already contain digits. "+" and "–" signs between adjacent cells indicate the difference between their values.
The goal is to fill the grid with digits so that no number repeats in any row or column.
A "+" sign between two adjacent cells means the number in the first cell (left or top) is one less than the number in the second cell (right or bottom).
A "–" sign means the number in the first cell is one greater than the number in the second.
All pairs of adjacent cells that differ by one will have either a "+" or "–" sign between them. If no sign is shown, the difference is greater than one.
Pro? Record a master class and get V.I.P.
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