Sudoku Master (palm)

From Absolutist:

Tired of Sudoku with standard numbers? Try one of our fun graphical skins for a twist on the challenge! Sudoku Master is packed with features: hints, cross-hatching, custome puzzle creation, auto penciling, game saves and 5 difficulty settings, including Diabolical! Customize virtually every color on the screen and track detailed gameplaystatistics. Over a Billion unique, true Sudoku puzzles await you. Don't Mess with the Master!