Monday, November 14, 2022
HomePuzzlesNon-separable sudoku numbers - Puzzling Stack Exchange

Non-separable sudoku numbers – Puzzling Stack Exchange


The commonplace guidelines for sudoku say that you’ve got a 9×9 grid and must put in each digit from 1 to 9 in a method that every digit happens precisely as soon as in every row, column and 3×3 field.

So the grid will be separated into 9 distinct teams, the place every group solely has one digit. These teams have one cell in every row, column and field and are fully disjoint.

But do you know that that isn’t true when subgroups of cells?

Find a bunch of cells, such that:

  • There are precisely two cells in every row, column and 3×3 field
  • The group can NOT be separated in two teams of precisely one cell in every row, column and 3×3 field.
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