[–] fusir [S] ago (edited ago)
So in a typical number different digits have different significance. If the sudoku were one large number starting with the uppermost lefthand number and then read row to row this is the lowest number you could get.
Also if it was read box to box then it would also be the lowest possible number also.
[–] fusir [S] ago (edited ago)
This is true by block and by line.