Easy to readEach puzzle has only 1 solution250 puzzles of silver level.Wide inner edges allow recording of solution optionsIdeal gift for all fans of puzzlesSudoku 6x6, separated by smaller rectangles of 3x2 cells. It is necessary to fill empty cells with numbers from 1 to 6, each of the digits should appear only once in each line of the 6 x 6 square, 6 x 6 column and 3x2 rectangle. In this puzzle, the numbers from 1 to 6 are not repeatedalso on the two main diagonals of the large square,marked with dashed lines. Cells with even numbers are marked with a gray background.Excellent purchase for fans of Sudoku.A great book for relaxing in your spare time. There are 148 pages. The format is 6 '' x 9 ''. I hope you enjoy my book. I would also be very grateful if you could write a review.Thank you.Best regards,Andrii Pitenko