I believe I came across this app not in the App Store, by from its website where I had looked up advanced techniques, tired of solving the hardest puzzles through a guess. It has been a fantastic resource a with pleasant interface, and I highly recommend it. The one thing I’d ask is the ability to hide the strategies required for a game so as to challenge myself without knowing that I’ll need to use a certain technique eventually. I end up playing games on other apps and, if I get stuck, imputing them as an external puzzle. I understand that’s the point of the option, and it is fantastic, but I’d love to be able to add that extra layer of challenge directly in the app. Thank you!

So happy that I found Sudoklue. I’ve been stuck at the same level… well, forever… but this app has helped me to move out of that rut. If I could change one thing… it would be nice to know that I’ve made a mistake when it happens… by the time I see “puzzle invalid,” it’s too late for me to find and fix the problem. But that’s a nice-to-have for this excellent app!

I am elderly and using this game to sharpen my deductive skills which are aging along with the rest of me. The ability to repeat specific puzzles and specific techniques would aid me substantially in more efficient and focused learning. In the interim, this is the best program I’ve found for advanced Sudoku.

Like other people, I wanted to learn to do every sudoku puzzle. This steps me through it, works with me along the way, and although I’m not there yet, I will solve the hardest puzzle soon.