The GOAL of the puzzle is to arrange all the tiles in numerical ascending order, starting from the first row.

The RULES are simple:

- Initially you'll find the odd and even tiles on separate rows. You can only move the external tiles of the puzzle and only one tile at a time.

- Each numerical tile can only be followed by a tile of greater value.

- Be careful! With advancing levels some lock tiles appear. They can be eliminated only if accompanied with other lock tiles in a blank row of the puzzle. You can move the lock tiles, but you can’t move the numbered tiles on a row containing a lock.

Video Tutorial: https://www.youtube.com/watch?v=DyGC7b28aK4

Web: http://matteostefan.it/
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Contacts: matteostefan@gmail.com

Are you still so sure of being able to count up to 15? To find out you just have to try "n -Challenge" Logic Puzzle.