Do you like to use your spare moments indulging in brain teaser puzzles? If so, Futoshiki Challenge will be your perfect take-anywhere companion. With 200 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 Latin Square puzzles. 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 Futoshiki puzzles. Activate your brain cells and grab a pencil - Futoshiki Challenge, brought to you by Hats House, is here to provide you hours of challenging entertainment, one page at a time!Futoshiki is a board-based puzzle game, also known under the name Unequal. It is playable on a square board having a given fixed size (5x5 for example). The purpose of the game is to discover the digits hidden inside the board's cells; each cell is filled with a digit between 1 and the board's size. On each row and column each digit appears exactly once; therefore, when revealed, the digits of the board form a so-called Latin square.At the beginning of the game some digits might be revealed. The board might also contain some inequalities between the board cells; these inequalities must be respected and can be used as clues in order to discover the remaining hidden digits.Each puzzle is guaranteed to have a solution and only one.