Just one piece from the Puzzle & Perplex range. Can you take apart the pieces of this puzzle and put them back back together again?

Made of solid steel, this puzzle is guaranteed to flex your cognitive muscles. If that’s not enough, each puzzle comes with a set of testing little riddles to give your brain an extra workout.

• Difficulty level 1/6

Metal Puzzles Formed of the symbols of Einstein’s ground-breaking E=mc2 equation, see if you can separate the two pieces of each metal puzzle and then reattach them.

Developed in 1905, Einstein’s famous theory enabled people to fully grasp the correlation between mass and energy. Even if you can’t understand the intricacies of the equation itself, attempting to solve this puzzle provides just the sort of mental stimulation that Einstein would have loved!

Ages: 8+