Think Ominos is a timeless puzzle that has been around for a number of years. The concept and challenge of the game is quite simple. All you need to do is to position the 6 hex-shaped pieces in the tray provided.
The problem is you have to join the spots on the pieces by matching the color. There are 6 colors of spots on each hex which are arranged differently. I was able to solve the puzzle in 20 minutes by placing the hex in the top position while systematically trying the other pieces.
Once you encounter a problem, there is an immediate solution to it. However, I have yet to find out if there is more than one solution. It is a challenging puzzle that is easy to understand.