SAMURAI SUDOKU
In Samurai Sudoku, normal sudoku rules apply for all five 9x9 sudokus, but the 9x9 inner sudoku shares four of its 3x3 boxes with those of the outside sudokus.
In Samurai Sudoku, normal sudoku rules apply for all five 9x9 sudokus, but the 9x9 inner sudoku shares four of its 3x3 boxes with those of the outside sudokus.