The message is: ACAUI MMGRC AILEE HKREG EAISW OSTHDS
With a grid size of 6 x 6. The forbidden cells are in different rows and different columns, so there are no two forbidden cells in the same line.
The message is: ACAUI MMGRC AILEE HKREG EAISW OSTHDS
With a grid size of 6 x 6. The forbidden cells are in different rows and different columns, so there are no two forbidden cells in the same line.