"The Complete Brain Training Puzzles, Volume 2" is an innovative colour-illustrated puzzle book. It is designed to help you make the most of your brain power by solving puzzles that increase slowly in level of difficulty. The puzzles get progressively tougher throughout the book, from Easy to Hard. This allows you to plot your progress and see how well you are developing your puzzle-solving skills. The early pages contain a high concentration of easier puzzle types - still stimulating and very useful for development - like Spot-the-Difference, Missing Word, Silhouette, as well a simpler versions of Sudoku, Kakuro and the like. By the time you reach the end you'll be ready for the extremely tough challenges that await: Super-hard Sudoku, frustratingly tough Make-a-Pair and the word/logic puzzle hybrid Yudoku.