Sandwich Sudoku

特殊数独。 三明治就是规定某行或某列1/9之间的加和数值，基本上通过确定全局数字1和9的位置来解谜。

the controls of this game has changed in a very bad way. its so counter intuitive that its unplayable now. i hope you fix it back to before.

The best sudoku game in the world.

Every time I open the app my progress is reset, I don't have this problem with any other game on Steam.

This is maybe one of the easier version of the Sudoku variants, but it becomes a fun pastime while you multitask.

Good implementation of Sandwich Sudoku puzzle

Well-crafted puzzles that can be solved logically rather than relying on guessing.

Beautiful hand crafted puzzles.

As an avid follower of the CtC channel on YT, I knew what I can expect: quality sudoku puzzles made by people, that have unique ideas to crack and solve. I really like the presentation: the App feels like it was put together by people with great taste in aesthetics. The puzzles get a little repetitive because the app only has one variant (I highly recommend the YT channel, where you get a totally unique puzzle every day you can also play, for free), but it really solidifies some solving techniques that are crucial later on with harder puzzles. Do one or two a day, and it is heaps of fun. The negatives for me sadly are the clues: I do not think they are done in a modern way and I think there could be a way to show which cell they are talking about for example. Right now they feel like a text-based game, which is not the best way to do this. A few times they contained also typos (which is to be expected) and they are sometimes hard to follow, as they have logic leaps the author expects you to know. Also they are not automatic meaning the hints are not understanding where you are in the puzzle, so you need to read those that you already solved, and then go to the one you need to progress. I feel this also could be improved by binding the hints to certain completeness of the grid, as I feel most of the solvers are actually using the same notations we have learned anyway. One other problem is, that the App is constantly keeping my CPU fan at high speed, maybe because the UI eats up way too much CPU cycles. All in all, if you like sudoku, and you follow the CtC channel, these Apps are a blind buy.

The only bad thing I can say about this game is that I find their interface to be less intuitive than Sven's SudokuPad, namely that backspace is bound to the undo action rather than delete, and that N and M are used for undo/redo instead of the more common Ctrl+Z/Ctrl+Y. Still, it provides enough options so that it is still playable for those more used to SudokuPad or other Sudoku apps. One feature of the UI I do like is that it has a specific button for annotating 19 in a single cell - something which you will do a lot in Sandwich Sudoku. You often know where the 1s and 9s are in the puzzle, but don't know which is which, so this is a nice quality-of-life feature. Another feature I really is the hints. Unlike with other puzzle games where it would just reveal the value of a random cell, it actually explains a piece of logic for you, to help you solve the puzzle on your own. This allows the game to become a learning experience where you can become a better Sudoku Solver. There are 100 puzzles in this Sudoku, ranging from fantastically easy to frustratingly difficult. The game encourages you to start slow by only giving you access to the easy puzzles. As you play you will unlock the harder puzzles one by one, giving you a sense of progression as you complete more puzzles. If you're a fan of Sudoku this game is inexpensive and will provide hours of gameplay. It can be simple and fun, or it can be complex and frustrating. It's a must-have in any puzzle game collection.