Zingles II

Supporting 4x4, 6x6, 8x8, 9x9, 12x12, 16x16, Jigsaw and Killer Sudokus, Zingles is your ultimate Sudoku companion. With support for pencil marks, cross hatching, freezing boards and display of legal moves Zingles contains all the solving aids you need to complete even the most difficult boards.