250 exciting sudoku puzzle. Levels go on increasing. You can start with a bronze medalist, this is the first 80 puzzles. You can go to the champion, the gold prize - 90 extreme Sudoku. Silver puzzles are in the middle of the book. All riddles have only 1 solution. 2 puzzles per page. Enough space for your thoughts and decisions. Very convenient and practical. Good brain support in shape. Expands creative thinking. Wide internal edges allow you to record solutions. Ideal gift for all fans of puzzles.Sudoku 12x12, separated by smaller rectangles of 4x3 cells. It is necessary to fill empty cells with numbers from 1 to 12, each of the digits should appear only once in each line of the 12x12 square, 12x12 column and 4x3 rectangle. In Sudoku Anti Diagonal each diagonal of the square contains no more than three different digits.An excellent book for free time and mind training.A great book for relaxing in your spare time. There are 148 pages. The format is 8,5 '' x 11 ''. I hope you enjoy my book. Sudoku will provide you with relaxation, color your leisure, turn your free time into relaxation, give a vacation from the daily for your mind, add zest, develop memory, develop logical thinking and concentration of attention.I would also be very grateful if you could write a review.Thank you.Best regards,Andrii Pitenko