Hello detuned and thanks a lot about you respond.
very fiddly without having any kind of keyboard input
Most of the users like such way to input numbers ... You need just one hand to solve and don't need to move to much around your keyboard.
and that having the numberpad obscure some of the puzzle as you are entering digits is a little annoying
You use it just when you want to input number, when you doing this you dont really need to know what around, i think.
What does it mean? Maybe the note function with the right mouse button ...?