Ahuja's Book also covers problems provision wise and has the past examination questions solved at the end of each chapter CA & CS. Case laws are discussed adequately and this book is more than sufficient for preparation. I haven't come across his notes though. Maybe for class room purposes the number of problems are minimal.
But if you take a look at the recent question paper, you will get a better picture of the trend. The questions relating to problems are also case law oriented and are not complicated. Working knowledge is very essential and a detailed study of each provision, latest ammendments and case laws will help you solve the problems too. Don't spend too much time on researching for problems, use that time for thoroughly studying latest case laws and recent ammendments.
All the Best
Deepa