Knot Puzzle description

Numbers are just like magic and playing with them, you're just like magician.
There is a grid and your task is to fill them all with numbers that can make an ascending sequence. Only some numbers are exposed in the cells. Find the appropriate next number to fill in.

The game is absolutely Free and there are hundreds of levels. Trying your best to win a level to earn some coins and then you can using them to get hints each time you're stuck.

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