These logic puzzles are perfectly suited to the touch interface of an iPad, but until recently they were only available via iPhone apps. The low resolution limits the size of the puzzle grids, and therefore the difficulty of the puzzles. The hardest Nurikabe in the paid app only took me about ten minutes to finish - and I am not especially good at these.
Finally, though, these are slowly making their way to the iPad in full HD resolution!
Most of these puzzles were invented by Japanese company Nikoli, but are often distributed in the United States by Conceptis, Ltd - while the iPhone apps were under the Nikoli name, the iPad apps are by Conceptis. Currently there are six iPad apps available:
- Hashi, also known as Bridges
- Pic-A-Pix, also known as Paint By Number.
- Link-A-Pix (a Pic-A-Pix variant)
- Fill-A-Pix (another variant)
- And of course, Sudoku
The interfaces are clean and uncluttered. These apps are all free, and come with an impressive 120 puzzles each to get you started! 40 easy, 40 medium, and 40 hard. Additional puzzles can be bought in various packs ranging from $1.99-2.99 depending on the size of the puzzles.
If you enjoy Sudoku, or its cousin Ken-Ken (which has been making regular newspaper appearances lately), I highly recommend you check out these other logic puzzles via these excellent free apps! These just started rolling out in November, with the most recent appearing in January, so hopefully they will continue to release other puzzle types.