This book contains more than 100 original, ingenious and creative “mini-puzzles” of different kinds: grids and patterns, assembling, dividing, number, word, mathematical, matchstick, coin, dot-connecting, dissection, logical, visual, spatial brainteasers, etc. They have a wide range of difficulty levels and the reader will find a mix of easy, moderate and very difficult challenges. Each puzzle is carefully formulated and described, solved, explained and supplemented with further pictures and diagrams. Solving the puzzles could improve mathematical skills, logical thinking, spatial imagination, visual perception, creative working and self-confident approaches to challenges and studies. This collection of puzzles will provide many interesting, fun and enjoyable moments to anyone who solves them. It can be recommended to all readers who like solving brainteasers.