Sudokus that no one can solve

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


 

Count different Sudoku

13-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.
Count different Sudoku

Count different Sudoku

13-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.

 

Multi Diagonal Sudoku

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.
Multi Diagonal Sudoku

Multi Diagonal Sudoku

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.

 

No Touch Sudoku

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.
  • Identical digits do not touch each other diagonally.
No Touch Sudoku

No Touch Sudoku

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.
  • Identical digits do not touch each other diagonally.

 

Non-Consecutive Sudoku

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 in adjacent cells cannot be consecutive.
Non-Consecutive Sudoku

Non-Consecutive Sudoku

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 in adjacent cells cannot be consecutive.

 

Count different Sudoku

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.
Count different Sudoku

Count different Sudoku

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.

 

Extra Regions Sudoku

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.
  • The connected shaded cells contain each digit from 1 to 9.
Extra Regions Sudoku

Extra Regions Sudoku

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.
  • The connected shaded cells contain each digit from 1 to 9.

 

Extra Regions Sudoku

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.
  • The connected shaded cells contain each digit from 1 to 9.
Extra Regions Sudoku

Extra Regions Sudoku

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.
  • The connected shaded cells contain each digit from 1 to 9.

 

Extra Regions Sudoku

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.
  • The connected shaded cells contain each digit from 1 to 9.
Extra Regions Sudoku

Extra Regions Sudoku

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.
  • The connected shaded cells contain each digit from 1 to 9.

 

Multi Diagonal Sudoku

15-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.
Multi Diagonal Sudoku

Multi Diagonal Sudoku

15-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.

 

Multi Diagonal Sudoku

15-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.
Multi Diagonal Sudoku

Multi Diagonal Sudoku

15-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.

 

Non XV sudoku

15-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.
  • The digits in two orthogonally adjacent cells cannot have a sum of either 5 or 10.
Non XV sudoku

Non XV sudoku

15-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.
  • The digits in two orthogonally adjacent cells cannot have a sum of either 5 or 10.

 

Non XV sudoku

15-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.
  • The digits in two orthogonally adjacent cells cannot have a sum of either 5 or 10.
Non XV sudoku

Non XV sudoku

15-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.
  • The digits in two orthogonally adjacent cells cannot have a sum of either 5 or 10.

 

Count different Sudoku

15-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.
Count different Sudoku

Count different Sudoku

15-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.

 

Extra Regions Sudoku

15-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.
  • The connected shaded cells contain each digit from 1 to 9.
Extra Regions Sudoku

Extra Regions Sudoku

15-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.
  • The connected shaded cells contain each digit from 1 to 9.

 

Extra Regions Sudoku

15-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.
  • The connected shaded cells contain each digit from 1 to 9.
Extra Regions Sudoku

Extra Regions Sudoku

15-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.
  • The connected shaded cells contain each digit from 1 to 9.

 

Non XV sudoku

17-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.
  • The digits in two orthogonally adjacent cells cannot have a sum of either 5 or 10.
Non XV sudoku

Non XV sudoku

17-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.
  • The digits in two orthogonally adjacent cells cannot have a sum of either 5 or 10.

 

Clone Sudoku

17-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.
  • 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.
Clone Sudoku

Clone Sudoku

17-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.
  • 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.

 

Extra Regions Sudoku

17-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.
  • The connected shaded cells contain each digit from 1 to 9.
Extra Regions Sudoku

Extra Regions Sudoku

17-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.
  • The connected shaded cells contain each digit from 1 to 9.

 

Multi Diagonal Sudoku

18-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.
Multi Diagonal Sudoku

Multi Diagonal Sudoku

18-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.

 

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