This is a nice game.

I played one game which was impossible to finish without cheating, I've never seen this before.

There is nothing negative to say, stopping the clock means putting the game in background but this is only a nag.

One feature which is hard to get used to but could be a bonus for those who get confused by penciled in squares, you have a separate window as a scratch pad (see image in the game description) (This should be an option for those who are used to penciled in sqaures)

This is worth the money, there are a lot of Sudoku games out there asking for a lot more money and who are not half as good

This is NOT a solver, this is a game! I think this is an important distinction to make with Sudoku

It is version 1 so I'm looking forward to seeing later versions.