Sudoku Collection: 200 Very Hard Anti Diagonal Sudoku Puzzles 9x9

200 excellent puzzles 9x9 at the level of Very Hard. Perfect for Advanced players. All riddles have only 1 solution. 2 puzzles per page.The font size is correct, you will not have to strain your eyes when solving puzzles. High quality paper and print (all puzzles read well, easy to write with pen and pencil without worry of bleed-through). Anti Diagonal Sudoku puzzles look like normal sudoku puzzles, in that you must place the numbers 1-9 once in each row, column and 3x3 box of the grid. There is one additional rule: each diagonal has at most three different digits.