Samurai sudoku puzzles consist of five overlapping sudoku grids. The standard sudoku rules apply to each 9 x 9 grid. Place digits from 1 to 9 in each empty cell. Every row, every column, and every 3 x 3 box should contain one of each digit.
The puzzles on Samurai sudoku have one unique solution which can be found with pure logic, no guessing required. Welcome to a puzzle fitness workout aimed at improving your brain power. Boost your mental agility with a session every day in the Mental Gym. Record the time you take to complete each puzzle and you can keep track of your ever-increasing mental strength. If a dotted line indicates a cut, and an uninterrupted line indicates a fold, which of the five patterns is produced when you fold and cut the square of paper as indicated?