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

29-July-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.

29-July-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.

30-July-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.
- Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

30-July-2020

- Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

30-July-2020

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

30-July-2020

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

30-July-2020

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

30-July-2020

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

31-July-2020

- Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

31-July-2020

- Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

31-July-2020

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

31-July-2020

1-August-2020

- Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

1-August-2020

- Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

2-August-2020

- Digits do not repeat along the marked diagonals.

2-August-2020

- Digits do not repeat along the marked diagonals.

2-August-2020

- Digits do not repeat along the marked diagonals.

2-August-2020

- Digits do not repeat along the marked diagonals.

2-August-2020

- Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

2-August-2020

- Apply Classic Sudoku rules. Within each coloured region each digit must appear exactly once.

2-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.

2-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.

3-August-2020

- Digits do not repeat along the marked diagonals.

3-August-2020

- Digits do not repeat along the marked diagonals.

3-August-2020

3-August-2020

4-August-2020

- Digits do not repeat along the marked diagonals.

4-August-2020

- Digits do not repeat along the marked diagonals.

4-August-2020

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

4-August-2020

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

5-August-2020

- Digits do not repeat along the marked diagonals.

5-August-2020

- Digits do not repeat along the marked diagonals.

5-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.

5-August-2020

5-August-2020

5-August-2020

5-August-2020

5-August-2020