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After my previous favorite Tap Sudoku stopped getting updates, I tried a half dozen apps before finally finding this one, where I could enter the number first then the cell. This speeds up your ability to play and is really a must, but most apps don’t offer it. After one game, I was pleasantly surprised at how the game also keeps your top 10 times. Neat! However, after playing 5-6 times (on “extreme” naturally bc I’m an addict), I came to a point when I realized there were no certain moves left. Thinking I may have missed a hint, and being nervous about the ticking clock, I guessed and it worked. But this continued to happen and I realized these are not true sudoku boards. A TRUE SUDOKU BOARD HAS ONLY ONE WAY TO SOLVE THE PUZZLE. The boards in this app offer several. This is problematic bc you are required to make 50/50 guesses (which often both work) in order to complete the puzzle. There’s no logic as to which 50/50 cells have one or two possibilities. Therefore, there is a new component of luck introduced, and that’s just not sudoku. I love the other features and gameplay functions but I’m not sure I can support this unfortunate flaw in the game itself.

I like the ability to choose between picking cell first or digit first as there are times and needs for both. I happen to be color blind and find all the shifting colors very discerning. I would like to have the option of turning them all off. My favorite Sudoku puzzle has NO color. It’s very clean. That’s what I like about it best. On many other sudoku puzzles I think the cells are too small. This one is just right! Deleting seems a bit clunky here though. At least for me. Maybe after I’m more familiar I will be more at ease with it. All-in-all I like this puzzle quit a bit. It’s just that color thing and deleting....

This app has the best interface and setting options. It lets you choose whether you’re picking the box first or the number and it doesn’t make you press and hold to keep keep working with the same number. It doesn’t deliver intrusive ads or kick you out if you make a mistake in the course of solving. It highlights all the squares with a number when you’re working it, entered values and penciled values alike. I only do the extreme level. other apps may seem like their harder puzzles are more difficult by comparison but it seems like most of their harder puzzles hit a point where the only way to solve is to assume one of two values and iterate it through to see if it’s a bust down the line, then go back and either lock it all in or iterate through based on the alternate value. when you’re content that you can solve any soduku puzzle and you start playing for speed instead, it’s nice to have an app that serves up a majority of puzzles that can be completed by logic not iteration.