A DOMINO puzzle consists of a rectangular grid, with each cell of the grid occupied by a single digit number. The grid represents a set of domino pieces laid out in a rectangular array. For example, if you use a "standard" domino set having pieces ranging from 0-0 spots to 6-6 spots, then the rectangle will be 8 cells across and 7 cells down. To solve a Domino puzzle, it is necessary to outline pairs of adjacent numbers in such a way that every piece of the domino set is revealed. Each puzzle has a unique solution and can be solved without recourse to guesswork.Do you like to use your spare moments indulging in brain teaser puzzles? If so, Domino Challenge will be your perfect take-anywhere companion. With 100 puzzles guaranteed to sharpen your mind and keep you thoroughly entertained; this collection is a real treat for anyone who loves puzzles. Are you ready to rise to the ultimate brain-training challenge? The unique thing about this puzzle book is that the puzzles all fit within a theme - they are all related to Dominoes. Working the puzzles in this book can provide a vigorous mental workout for virtually everyone from teenagers to senior citizens, all while fitting within the theme of Domino puzzles. Activate your brain cells and grab a pencil – Domino Challenge, brought to you by Hats House, is here to provide you hours of challenging entertainment, one page at a time!