• 160,000 Sudoku Puzzles, with 4 difficulty levels! • 100% FREE! DOWNLOAD NOW AND START HAVING FUN! :-) • No timers at all! Just relax and have fun! Boy Howdy's Expert Sudoku has four tricky types of Sudokus to try: • X Sudoku is the same as regular 9x9 sudoku, but both diagonals must contain 1 to 9 once only. • Hyper Sudoku is 9x9 but with an additional set of four 3x3 blocks that must contain 1 to 9 once only. • Jigsaw Sudoku is 9x9 but instead of 3x3 smaller blocks, the blocks are shaped like jigsaw pieces. • Samurai Sudoku (iPad only, because it's HUGE!) is a super combo of five regular 9x9 sudoku puzzles, overlapping on one corner of one of the 3x3 blocks. Note that the normal row/column constraints are only within each 9x9 square. • There are 40,000 Sudokus for each of the four types! (10,000 Easy, 10,000 Medium, 10,000 Hard, and 10,000 Evil Sudokus) • Beautiful, easy to read numbers! • Full UNDO support! • Fast and intuitive dual-keypad input system - just tap a cell and easily mark your answer or pencil marks! • Pencil marks are auto-erased as you enter answers! (Can be turned off if you wish) • Horizontal and Vertical guidelines make it easy to look at your current row and column (Can be turned off if you wish) • Auto-highlight other cells with the same number as the currently selected cell • Auto-highlight cells that have a visible conflict • Auto-highlight pencil marks that have a visible conflict (All of these highlights can be disabled if you wish) • Hint function if you get stuck! • Check your work function, to spot any problems you've got if you're unsure! • Your progress is automatically saved, all the time, so go ahead and take that call or jump out to any other apps - you can come back and pick up playing right where you left off! • Sounds can be disabled if you want a quiet game • You can even listen to your own music while you play Thanks for playing! Come see us at http://boyhowdytechnology.com