Compilation of sudoku variations s6

It’s time to challenge your brain and enjoy minutes or hours of fun with this series 6 Compilations of Sudoku Variations!!! Get a copy now and solve Outside Sudoku, Frame Sudoku, Diagonal Sudoku and 4×1 Sudoku and many more…

National Finalists of the 7th Philippine Sudoku Super Challenge may contact their center coordinators to order or buy a copy.