Vierdubbele Sudoku

  • Plaats de cijfers 1 tot 9 in elk leeg vakje, zodat elk cijfer precies één keer voorkomt in elke rij, elke kolom en elk van de 9 3x3 regio's.
  • De vier cijfers op de kruising van de rijen en kolommen moeten in vier aangrenzende cellen worden geplaatst.
  • Vierdubbele Sudoku

    Sudoku's die niemand kan oplossen

    Sudoku's die niemand kan oplossen, niet alleen de zeer moeilijke, maar ook diegene die nog niemand heeft geprobeerd op te lossen.

     

    2 November 2025
    Quadruple sudoku 2 November 2025
    2 November 2025

     

    5 November 2025
    Quadruple sudoku 5 November 2025
    5 November 2025

     

    9 November 2025
    Quadruple sudoku 9 November 2025
    9 November 2025

     

    10 November 2025
    Quadruple sudoku 10 November 2025
    10 November 2025

     

    18 November 2025
    Quadruple sudoku 18 November 2025
    18 November 2025

     

    21 November 2025
    Quadruple sudoku 21 November 2025
    21 November 2025

     

    6 December 2025
    Quadruple sudoku 6 December 2025
    6 December 2025

     

    7 December 2025
    Quadruple sudoku 7 December 2025
    7 December 2025

     

    8 December 2025
    Quadruple sudoku 8 December 2025
    8 December 2025

     

    11 December 2025
    Quadruple sudoku 11 December 2025
    11 December 2025

     

    13 December 2025
    Quadruple sudoku 13 December 2025
    13 December 2025

     

    20 December 2025
    Quadruple sudoku 20 December 2025
    20 December 2025

     

    21 December 2025
    Quadruple sudoku 21 December 2025
    21 December 2025

     

    22 December 2025
    Quadruple sudoku 22 December 2025
    22 December 2025

     

    1 January 2026
    Quadruple sudoku 1 January 2026
    1 January 2026

     

    4 January 2026
    Quadruple sudoku 4 January 2026
    4 January 2026

     

    14 January 2026
    Quadruple sudoku 14 January 2026
    14 January 2026

     

    16 January 2026
    Quadruple sudoku 16 January 2026
    16 January 2026

     

    19 January 2026
    Quadruple sudoku 19 January 2026
    19 January 2026

     

    23 January 2026
    Quadruple sudoku 23 January 2026
    23 January 2026

     

    26 January 2026
    Quadruple sudoku 26 January 2026
    26 January 2026

     

    8 February 2026
    Quadruple sudoku 8 February 2026
    8 February 2026

     

    9 February 2026
    Quadruple sudoku 9 February 2026
    9 February 2026

     

    9 February 2026
    Quadruple sudoku 9 February 2026
    9 February 2026

     

    9 February 2026
    Quadruple sudoku 9 February 2026
    9 February 2026

     

    10 February 2026
    Quadruple sudoku 10 February 2026
    10 February 2026

     

    14 February 2026
    Quadruple sudoku 14 February 2026
    14 February 2026

     

    16 February 2026
    Quadruple sudoku 16 February 2026
    16 February 2026

     

    16 February 2026
    Quadruple sudoku 16 February 2026
    16 February 2026