Expert Sudoku Book Stress Free1.46 - App Store

. 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

Version History • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.46 Jun 3 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.45 May 22 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.44 Feb 5 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.43 Jan 28 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.42 Jan 7 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.41 12/16/2025 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.40 10/27/2025 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.38 10/23/2025 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.37 09/28/2025 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.36 09/19/2025 • NEW - reverted back to previous square colors and just flash a reminder one time

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Search for "Boy Howdy Technology" to see all our free games! 1.35 02/25/2025 • NEW - darker squares in Hyper/Jigsaw/X to make it easier to see which squares are linked

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Search for "Boy Howdy Technology" to see all our free games! 1.34 02/21/2025 • Moved live error checking into Menu/Settings

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Search for "Boy Howdy Technology" to see all our free games! 1.33 10/02/2024 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.32 09/25/2024 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.31 03/27/2024 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.30 10/02/2023 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.29 09/14/2023 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.28 09/07/2023 • Added Jump to Level button in Settings

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Search for "Boy Howdy Technology" to see all our free games! 1.27 08/24/2023 • Added Jump to Level button in Settings

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Search for "Boy Howdy Technology" to see all our free games! 1.26 08/23/2023 • Improve layout for newer iPads

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Search for "Boy Howdy Technology" to see all our free games! 1.25 07/22/2023 • Fix Share This Game button

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Search for "Boy Howdy Technology" to see all our free games! 1.24 01/26/2023 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.23 01/19/2023 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.22 12/20/2022 • Updated for the latest iOS

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Search for "Boy Howdy Technology" to see all our free games! 1.21 05/05/2021