Please use logical thinking instead of guessing! Each puzzle only has one solution.
Jigsaw diagonal Sudoku is also referred to Jigsaw X Sudoku. It is another type of standard Sudoku. Based on Jigsaw Sudoku, Jigsaw Diagonal Sudoku adds another two diagonal lines. Numbers on each diagonal line cannot be repetitive. Jigsaw diagonal Sudoku puzzles on Sudoku.cool have seven sizes of 4x4,5x5,6x6,7x7,8x8,9x9 with ten difficulty levels. By pressing “New Puzzle...”, you can choose game size and difficulty level.
You can learn more details about online game operation by referring to instruction of Newdoku .