How to Play 1 to 25
The board contains 25 squares which you must fill with numbers. You can drag a number from the side onto a square. You must fit all 25 numbers onto the board following two simple rules.
The 'next to' rule:
Each number placed must go next to the previous number. That can be the square above, below, left or right as well as the four diagonal cells.
The 'edge' rule:
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 'Next to' Rule |