The puzzles in this volume 2 are slightly easier than in volume 1 and there are 200 of them Hidoku is not Sudoku. It's a brand new puzzle game, played on a square or rectangle of any size. Your goal is to fill in the missing numbers from 1 to the maximum number (which is circled) by following one simple rule: consecutive numbers must touch each other either horizontally or vertically or diagonally. All 200 puzzles are solvable by logic and no guessing is ever required.