Help Read the help page on Sudoku puzzles for a more detailed explanation.
Keyboard Usage[only when your cursor is in the grid] Note: not all options work on all browsers. Ctrl + Arrows = move around the grid. a = auto-pencil marks. p = show a pinned square. Shift + # = show squares with a <#>.
Printing Only BrainBashers Sudoku can be printed (the starting grid, without pencil marks).