Fortress Sudoku

  • 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.
  • If a shaded cell and a white cell are adjacent then the digit in the shaded cell is greater.

    • Fortress Sudoku

    Sudokus that no one can solve

    Sudokus that no one can solve, not only including Sudokus which are very difficult but also those that no one has tried to solve.

     

    28 October 2025
    Fortress Sudoku 28 October 2025
    28 October 2025

     

    31 October 2025
    Fortress Sudoku 31 October 2025
    31 October 2025

     

    01 November 2025
    Fortress Sudoku 01 November 2025
    01 November 2025

     

    08 November 2025
    Fortress Sudoku 08 November 2025
    08 November 2025

     

    09 November 2025
    Fortress Sudoku 09 November 2025
    09 November 2025

     

    11 November 2025
    Fortress Sudoku 11 November 2025
    11 November 2025

     

    20 November 2025
    Fortress Sudoku 20 November 2025
    20 November 2025

     

    23 November 2025
    Fortress Sudoku 23 November 2025
    23 November 2025

     

    26 November 2025
    Fortress Sudoku 26 November 2025
    26 November 2025

     

    13 December 2025
    Fortress Sudoku 13 December 2025
    13 December 2025

     

    24 December 2025
    Fortress Sudoku 24 December 2025
    24 December 2025

     

    27 December 2025
    Fortress Sudoku 27 December 2025
    27 December 2025

     

    29 December 2025
    Fortress Sudoku 29 December 2025
    29 December 2025

     

    30 December 2025
    Fortress Sudoku 30 December 2025
    30 December 2025

     

    31 December 2025
    Fortress Sudoku 31 December 2025
    31 December 2025

     

    02 January 2026
    Fortress Sudoku 02 January 2026
    02 January 2026

     

    04 January 2026
    Fortress Sudoku 04 January 2026
    04 January 2026

     

    04 January 2026
    Fortress Sudoku 04 January 2026
    04 January 2026

     

    04 January 2026
    Fortress Sudoku 04 January 2026
    04 January 2026

     

    17 January 2026
    Fortress Sudoku 17 January 2026
    17 January 2026

     

    18 January 2026
    Fortress Sudoku 18 January 2026
    18 January 2026

     

    21 January 2026
    Fortress Sudoku 21 January 2026
    21 January 2026

     

    25 January 2026
    Fortress Sudoku 25 January 2026
    25 January 2026

     

    26 January 2026
    Fortress Sudoku 26 January 2026
    26 January 2026

     

    27 January 2026
    Fortress Sudoku 27 January 2026
    27 January 2026

     

    05 February 2026
    Fortress Sudoku 05 February 2026
    05 February 2026

     

    09 February 2026
    Fortress Sudoku 09 February 2026
    09 February 2026

     

    09 February 2026
    Fortress Sudoku 09 February 2026
    09 February 2026

     

    09 February 2026
    Fortress Sudoku 09 February 2026
    09 February 2026

     

    English | 中文（简体） | 中文（繁體） | 日本語 | 한국어 | Français | Deutsch | Español | Português | Русский | Italiano | Nederlands | Türkçe | हिन्दी | ไทย | Tiếng Việt | Bahasa Indonesia | Polski | Українська |

    数独 | Cool Sudoku | 数独 | Sudoku Puzzle | 賢くなるパズル

    © sudoku.today All rights reserved 2019-2026