First Move: Place your opening equation so it passes through the red ST (start) cell at the board center. Use number tiles from your rack + operator tiles.

Subsequent Moves: Every equation MUST reuse at least one tile already on the board — like Scrabble. Extend existing equations horizontally or vertically.

Valid Equations: All placed tiles in one turn must form a correct equation: e.g. 7 + 3 = 10. Chains like 29 = 33 − 4 = 87 − 58 are also valid.

Your Rack: You hold 7 number tiles drawn from 1–100. Operators (+, −, ×, ÷, =, brackets) are unlimited and free to use.

Bonus Cells: Landing on coloured cells awards bonus points. Bonuses apply only the first time a cell is used.

Can't Play? Pass or Swap: If you cannot form a valid equation with your current tiles, you must → Pass your turn to the opponent. While waiting you may also use ⇄ Swap All to return all your tiles to the pool and draw 7 fresh ones — but this forfeits your turn. Use the 💡 Hint button first to confirm there really is no valid move before passing.