Another ThinkFun logic game for kids that develops deduction skills and critical thinking skills. Those skills can help the child to be better in math and science. It is a great game for those who want to be mentally challenged. There are 40 challenges, from beginner and intermediate to advanced and expert levels. The great thing about it is that it has a magnetic board which makes it a perfect choice for traveling and there are small chances of losing parts. It is in the form of a small book which makes it easy to carry and store.