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.
This app has some board sizes which are 9x9, 8x8, 6x6 and 5x5. The Block arrange of 8x8 is our original style. Please see screenshot.
If you want to get more puzzles in this app, please request us. At that time, please write the board size that you want.
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.
This Application is a part of "Umekichi Project". SDK means "Standard sudoku".
Released on 12 January 2014.
*1 "Sudoku (SUDOKU)" is a registered trademark of NIKOLI Co., Ltd. in Japan.