250 excellent sudoku at the level of silver. 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 inner edges allow recording of solution options. Ideal gift for all fans of puzzles. Sudoku 15x15, separated by smaller rectangles of 5x3 cells. It is necessary to fill empty cells with numbers from 1 to 15, each of the digits should appear only once in each line of the 15x15 square, 15x15 column and 5x3 rectangle. In this puzzle, the digits from 1 to 15 should not Excellent purchase for fans of Sudoku. 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. I would also be very grateful if you could write a review. Thank you. Best regards, Andrii Pitenko