How to play
Place tiles on board so each adjacent numbers match each other.
To move a tile, click on it and then click on the field you want to place it.
To remove a tile, click on it and then click on otside the field.
Game is over when all tiles are placed on the board as shown on the image:
You can find an old version of the game (desktop only) here: Tetravex
You can find more information about the game in wikipedia: Edge-matching Puzzle