Diagonal Sudoku

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Check out Diagonal Sudoku which is the more challenging version of Sudoku. Try to make every 3x3 square and two diagonal lines have the numbers from 1-9.

Diagonal Sudoku is a puzzle game inspired by the Sudoku game. However, this game will become much more difficult in the presence of diagonal rows. This game retains the gameplay from the original Sudoku. You will have to fill in the numbers from 1 to 9 and the empty cells on the board so that it satisfies the conditions of the game. When aligning numbers vertically, the horizontal numbers must not overlap. Even the numbers in the small 3x3 grid cannot overlap. Also, this game gets harder when you have to pay attention to the diagonal lines. This means that the diagonals in a 9x9 grid cannot overlap. Do you dare to challenge yourself in these challenges? Don't be afraid to play this amazing game.

This is a puzzle game, so it will challenge your brain. You will have to find the missing numbers on the grid based on the numbers available on the grid. You observe the alignment of the digits and find their proper place. In this way, you can train your logical thinking ability. What are you waiting for without joining this game?

Compare Diagonal Sudoku and Sudoku

These are all puzzle games, where you have to complete a 9x9 grid. You rely on the numbers available on the grid to find the missing numbers. You must fill in the numbers so that it does not overlap horizontally and vertically. The 3x3 grid medians are also completely different.

The Sudoku is divided into many different levels. The levels will be spread from easy to insane. This helps players train their brains through each level and gradually get used to the gameplay of the game. In addition, the game also has a daily mode with random challenges so that players can challenge themselves.

In the game Diagonal Sudoku, you not only have to solve the horizontal, vertical, and 3x3 grids, but you also have to pay attention to the diagonal lines in the 9x9 grid. This is an extremely interesting creation of the game, making it more difficult for you to solve puzzles.

How to play


In this game, you will have to complete a 9x9 grid. Your task is to arrange the numbers so that they do not overlap vertically, horizontally, or diagonally. In addition, the numbers in the 3x3 mini-grid cannot overlap. Are you confident that you can overcome the challenges in the game? Play and prove your intelligence.

The principles of Diagonal Sudoku

If you are a big fan of Sudoku, don't ignore this game. It is more difficult than the original version. In this game, you need to fill a 9x9 grid with digits. Not only every 3x3 square but also two diagonal lines must have numbers from 1 to 9. Do not let any number repeat unless you want to lose soon. Play the game and let's see how smart you are. If you are keen on this game, take a look at Qwordle, Wordle, and Magical Jigsaw on our website.


This game has simple gameplay. You use the mouse to fill in numbers in the empty cells. You click on the blank cells you want to fill, there will appear a table of numbers from 1 to 9, you find the appropriate number and enter it into the grid. To find the right numbers, you align them horizontally and vertically. You pay attention to the numbers in 3 horizontally, vertically, and diagonally to avoid duplicate numbers. Play and conquer the game.

How to control: Click the left mouse button to choose the numbers.

Strategies for Diagonal Sudoku

  • This is a rather difficult puzzle game. It requires you to have a good logical thinking ability to be able to solve puzzles. However, if you are new to the game you can also refer to our tips. You rely on the remaining numbers on the grid to fill in the remaining numbers. You should focus on a single one and find its missing location on the map. You align that number horizontally, vertically, and diagonally and place that number in a position that does not overlap with any other number.
  • You can also rely on the 3x3 grid to find the missing number. You compare the numbers 1 to 9 with the numbers on the 3x3 grid and fill in the missing number. This method can only be used when the 3x3 grid has only one empty cell.
  • You can also combine lines with a 3x3 grid. You compare the numbers that appear on the 3x3 grid with the numbers that appear on the horizontal and vertical lines to find the missing number.
  • You also shouldn't stay in one place for too long. Let's go solve other numbers to save time.