I really like the way they’ve done the graphics. The grids are large and easy to see. You can also “pencil” in possible numbers in a square before you make your decision.
If you aren’t familiar with how Sudoku works, here’s the basics:
Start with a 9×9 grid that has 9 3×3 grids built into it. There are some numbers already added in to get you started. They can be helpful, or annoying depending on how well you fit your numbers in.
You will need to fill every column and row of the 9×9 grid with 1-9, all numbers used once.
Make sure you fill each 3×3 grid with 1-9, all used just once.
I found myself having to move some numbers around after I got through the grid. The grids are a good challenge, but also good for beginners.
There are 33 puzzles to choose from. You can have the game randomly pick a puzzle for you, or choose one yourself. There are also bonus puzzles.
If you don’t have numbers on your Kindle keyboard, you can use the letter equivalents: QWERTYUIO instead of 1-9. I think the only people who will have to use this are Kindle 1 owners. I have a Kindle 2, and there are numbers on my keyboard.
From the main menu, you can change your settings to reflect the numbers or letters, depending on what keyboard you have.
The 5-way toggle button is the main tool to use. You can use it to annotate and insert the numbers. I like the font they use for the numbers. It makes them look more like they’re handwritten.
There are a couple of alternative choices for you if you want to try other Sudoku like games in addition to Red Hot Sudoku. I encourage you to try EA’s version, and Futoshiki. Futoshiki is awesome, and adds a new twist with < and > symbols.
The one review available is by a professional puzzle maker. The reviewer provides good insight on what can be done to make the puzzles trickier. The interface is great. I hope more reviewers will post because I’m curious to know what they think about this one compared to the other Sudoku Kindle games out there. It is also good to get perspectives from players of all skill levels.