Total play time exceeded 24 hours
Cleared all "Sudoku" puzzles
Cleared 40 "Sudoku" puzzles
Cleared 30 "Sudoku" puzzles
Cleared 20 "Sudoku" puzzles
Paused a puzzle more than 50 times
Quit a puzzle more than 50 times
Used the delete function more than 100 times
Cleared 10 "Sudoku" puzzles
Cleared 15 puzzles in a row on shuffle
Used the redo function more than 100 times
Used the undo function more than 100 times
Read all game guides