The puzzle pieces of IQ Twins are 2 peas in a pod, but not 2 of a kind! 10 puzzle pieces form 5 colour pairs. One piece will only fit on the board at 90 angles, while its twinrequires 45. IQ Twins comes in a handy travel case and includes 120 challenges from easy to expert, making it great for both kids and adults. Are you ready for this brain-training puzzle?