Choose a number that occurs most on the board already (so there's one or two instances left to place) - there are indicators below the board to help you find the best one. The more advanced technique you can use for a harder puzzle called 'scanning': it exploits the fact that any given number from 1 to 9 can occur only nine times in a completed Sudoku puzzle. Now you will notice the more and more rows, columns and regions become almost complete and easy to deduce - the complete puzzle picture becomes clearer with each move.

Now try to use the same technique but now with an almost filled-in row or column - find the one where only one number missing (then the answer is obvious) or two ones missing - try both options and figure out the right one. Which one is correct? Just place 3 and look across the whole row, then the column: is there a duplicate? Try the same with 7 and you'll get the correct option. For example, if a 3x3 square lacks just the numbers 3 and 7, we have only two options on how to place these two remaining numbers - 3 in a first cell and 7 in a second one or vice versa. You will certainly see a square where just one or two numbers are missing. Start a Sudoku puzzle on an Easy level to learn all the techniques quickly. Sounds like a tricky task? Just start scanning the board and you'll find all clues you need, one by one, and get the puzzle solved. So each number from 1 to 9 occurs only one time in each row, column and region. Now you just need to fill the remaining cells with numbers from 1 to 9, obeying the only rule:Įach row, column or region must not contain repetitive numbers. The more cells are pre-filled the easier the puzzle.

You start a Sudoku puzzle with some cells already filled in with numbers. So each row, column or region contains nine cells. In each Sudoku puzzle you have a 9x9 grid, divided into nine 3x3 square regions (you can just look above to get an impression). We recommend using a A4 Mahjong How to Play Sudoku This website will provide you printable irregular diagonal sudoku puzzles, we daily update including solutions. Printable Irregular Diagonal Sudoku Puzzles (Daily update) You can learn more details about online game operation by referring to instruction of Newdoku. By pressing “New Puzzle.”, you can choose game size and difficulty level.

Jigsaw diagonal Sudoku puzzles on ol have seven sizes of 4x4,5x5,6圆,7x7,8x8,9x9 with ten difficulty levels. Numbers on each diagonal line cannot be repetitive. Based on Jigsaw Sudoku, Jigsaw Diagonal Sudoku adds another two diagonal lines. Jigsaw diagonal Sudoku is also referred to Jigsaw X Sudoku.

Daily jigsaw sudoku to print