A handy book full of puzzles and games that will put the reader's number and observation skills to the test. It features tricky mazes, colourful picture puzzles, spot-the-difference, true or false, jumbled sequences and lots of other picture puzzles to solve.A handy book full of puzzles and games that will put the reader's number and observation skills to the test. It features tricky mazes, colourful picture puzzles, spot-the-difference, true or false, jumbled sequences and lots of other picture puzzles to solve.