As you know, "Number Place" is the famous puzzle in a world. It is known as "Sudoku *1". Therefore, we do not explain about the rules. If you do not know about it, please search the word on web.
"Hyper Sudoku" has one more rule than Standard Sudoku that has 9 grids by 3x3. Hyper Sudoku has 4 more 3x3 blocks than standard Sudoku. Please see screenshots, you will see four blue-colored 3x3 blocks in puzzle board. You must fill all empty cells so that the numbers 1 to 9 appear exactly once in each row, column and 3x3 blocks.
In addition, I have also included "SDK Hyper Diagonal". Rules of "SDK Hyper" apply. Additionally, no digit repeats on diagonals.
In this application, we adopted a new input method "Thumb One" for a smart phone. When you are working with a smart phone with one hand, you can enter the answer and pencil marks in just thumb of one hand.
If you are interested in "Thumb One", please see this movie.
"SDK Hyper" and "SDK Hyper Diagonal" is a part of "Umekichi Project".
Released on 21st OCT., 2013.
*1 "Sudoku (SUDOKU)" is a registered trademark of NIKOLI Co., Ltd. in Japan.