Easy to read Each puzzle has only 1 solution 250 puzzles of gold level. Wide inner edges allow recording of solution options Ideal gift for all fans of puzzles Sudoku 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 repeated also on the two main diagonals of the large square, marked with dashed lines. The sum of all the numbers in the cage must correspond to the number printed in the corner. In this Sudoku the same numbers can not "beat" each other with the chess steed. Excellent purchase for fans of Sudoku. 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