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Sudoku hidden single

  • 29-11-2020 11:41pm
    Registered Users Posts: 842 ✭✭✭ Hego Damask

    According to this it is a hidden single ..

    But I cannot eliminate 6 from the square directly above ....


  • Registered Users Posts: 1,403 ✭✭✭ loobylou

    Column 3, the 6 can only go in positions G or I.
    Column 7 similarly the 6 can only take up G or I.
    Therefore row G cannot have a 6 in column 4.

  • Registered Users Posts: 842 ✭✭✭ Hego Damask

    oh wow !!!
    Thanks, I have been managing to do hard suduko's without utilising that trick!!!

    Wow ... nice...