Sudokus that no one can solve, not only including Sodukus which is very difficult but also that no one trying to solve it.

14-August-2020

- Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns and the nine outlined 3x3 regions.
- Digits do not repeat along the marked diagonals.

14-August-2020

- Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns and the nine outlined 3x3 regions.
- Digits do not repeat along the marked diagonals.

14-August-2020

- Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns and the nine outlined 3x3 regions.
- Arrows and numbers outside gridding means how many different numbers in corresponding direction grid.

14-August-2020

- Arrows and numbers outside gridding means how many different numbers in corresponding direction grid.

15-August-2020

- Digits do not repeat along the marked diagonals.

15-August-2020

- Digits do not repeat along the marked diagonals.

15-August-2020

- Arrows and numbers outside gridding means how many different numbers in corresponding direction grid.

15-August-2020

18-August-2020

- Digits do not repeat along the marked diagonals.

18-August-2020

- Digits do not repeat along the marked diagonals.

18-August-2020

18-August-2020

19-August-2020

- Grey cells in the grid represent many cloned areas. Digits in these areas on corresponding positions must be identical. Cloned areas are only moved, without rotation or reflection.

19-August-2020

- Grey cells in the grid represent many cloned areas. Digits in these areas on corresponding positions must be identical. Cloned areas are only moved, without rotation or reflection.

19-August-2020

- Grey cells in the grid represent many cloned areas. Digits in these areas on corresponding positions must be identical. Cloned areas are only moved, without rotation or reflection.

19-August-2020

19-August-2020

- Each of the four shaded 3x3 boxes contains each digit from 1 to 9.

19-August-2020

- Each of the four shaded 3x3 boxes contains each digit from 1 to 9.

20-August-2020

- Digits do not repeat along the marked diagonals.

20-August-2020

- Digits do not repeat along the marked diagonals.

21-August-2020

- Digits do not repeat along the marked diagonals.

21-August-2020

- Digits do not repeat along the marked diagonals.

21-August-2020

- The arrows outside the grid indicate that the nearest three digits in the corresponding direction are in ascending or descending order (the highest number is always in the direction of the arrow). All possible arrows are given, so if there is no arrow, the first three digits do not form an increasing sequence in either direction.

21-August-2020

- The arrows outside the grid indicate that the nearest three digits in the corresponding direction are in ascending or descending order (the highest number is always in the direction of the arrow). All possible arrows are given, so if there is no arrow, the first three digits do not form an increasing sequence in either direction.

22-August-2020

22-August-2020

24-August-2020

24-August-2020

25-August-2020

25-August-2020

26-August-2020

- Digits do not repeat along the marked diagonals.

26-August-2020

- Digits do not repeat along the marked diagonals.

26-August-2020

- The four corner boxes contain the same digit in symmetric positions about the centre.

26-August-2020

- The four corner boxes contain the same digit in symmetric positions about the centre.

26-August-2020

- Cells with shaded circles contain odd digits.

26-August-2020

- Cells with shaded circles contain odd digits.

27-August-2020

- Digits do not repeat along the marked diagonals.

27-August-2020

- Digits do not repeat along the marked diagonals.