Life In 19x19

I'm a big fan of the Graded Go Problems for Beginners series, and since I have just got a smart phone I am looking for a solid collection of SDK problems.

I just stumbled upon references on GD to an SGF version of these books - does anyone have this? I own volumes 1, 2 and 3, so I assume it would be okay for me grab an SGF of those volumes, if anyone has them?

Alternatively, if anyone knows of any good SGF problem collections, that would be great.

I use GoGrinder on Android and purchased Elementary Training and Dan Level Testing. I used Carl Jung's program to convert the cd problems to sgf.

viewtopic.php?f=18&t=637&start=0

You can find some good details there. I like the problem sets.

Great! Thanks a lot.