Can you solve a Sudoku in 12 minutes? Sharpen your mind with Sudoku puzzles Sudoku puzzles add a fresh challenge to your mental workout. The objective is to place 1 through 9 only once in each horizontal row of squares, each vertical column of squares, and each 3x3 square box in the 9x9 grid. The puzzles have some numbers filled in, and you work out the rest. Engel Jones is the podcast host of 12minconvos where he consistenly challenges himself with goals that seem impossible. He is now helping others to challenge their minds as he believes that a healthy mind is beneficial to humanity. This Edition is made up of 200 puzzles Difficulty : HARD 4.4 inch per page Bold numbers Time log Cream paper Answers for each Sudoku puzzle are included Get your copy now and test YOURSELF!!!