I really enjoy playing sudoku, it's a great mind exerciser and distraction beyween long reading sessions, yet... Kobo's Sudoku isn't fun to play, the designer thinks that it's a challenge to make all levels uncompletable, even the most basic levels are no fun.
The dev tries to entice a player by throwing down the gauntlet with, "I dare to you try and play this game, go on try, you intellectually unworthy human", then proceeds to make it impossible to complete any game at any level.
The opening screen says it all really, tons of arrogance. might I suggest that he go to
http://www.websudoku.com/ to see what fun Sudoku can be without intellectual arrogance. websudoku is on all my other devices.
To the Sudoku app designer, "Please, please do something about your game to make it a enjoyable and fun distraction on my reader".
Many thanks.