This book contains 100 shapes (in silhouette) that can be formed using the four plastic pieces that are provided with the book.

Mr. Tan Kin Lian explains the technique to solve the shapes and how it helps to develop the skill of problem solving, thinking "out of the box" and spatial intelligence.

It is also great fun for the family. It is suitable for children, adults and seniors.

There is also an achievement record for each member of the family to record the time taken to solve each shape.