Amnesiak is ...
    It's a Sudoku game for Mac.
    It's a Freeware, but commercial use without developer's permission is denied.


Requirements is ...
    It is universal binary for OS X 10.4 or later.
    Development has been done on Intel-MacBook + OS X 10.5.2 + XCode 3.0.
    But, it hasn't been tested on other environment, so it could cause some
    problem on them.


Functions are ...
    Game generation, saving, loading, editing, solving is available.
    and, pencil-mark and tooltips are supported.


How to use key

    *Writing a number in a cell
       - Cursor keys : moving between cells.
       - Numbers[1~9] : writing a number in a cell.
       - Number[0], Space, Delete, Forward Delete : deleting a number from a cell.

    *Making pencil-marks
       - Option+[1~9] : append a number in pencil-marks from backward.
       - Option+[0] : remove a number from pencil-marks from backward.
       - Shift +[1~9] : remove a number from pencil-marks.
       - Shift +[0] : remove all pencil-marks from a cell.
       - Option + Shift +[1~9] : append a number in pencil-marks from forward.
       - Option + Shift +[0] : remove a number from pencil-marks from forward.


Feedback
    http://bundles.tistory.com/category/bundles/Amnesiak