Smart games are fun stimulating logic games that can be played anywhere and anytime in the iq puzzler pro challenge you must place the pieces on the board as stipulated by the challenge and then try to fill all the empty spaces with the remaining pieces in either 2d or 3d mode be warned there is only one solution to each challenge with 120 challenges over a range of different skill levels this portable and compact logic game will provide hours of entertainment and help improve your problem solving abilities into the bargain single player easy to expert challenges compact and portable a great travel game 2d and 3d challenges 120 cognitive skill building challenges ages 6 years