Yeah with Fritz 8 & 9 you select tools, analysis, then you have some options, blunder check, postion and a few others, I usually just select full.
Once you select that you should get a further pop up with more options, I suggest you reduce the thinking time for each move right down otherwise you'll be there all day waiting for the thing to finish.
Originally posted by YUG0slavVery good point! I've also noticed that.
eg. say you set your engine to play at 1000 elo strength. At this level, it will will lots of drastic blunders, but not in the same way as a human 1000 player. When humans make mistakes, it's primarily due to a misconception and there's a reason for the bad move. When the computer makes mistakes, it's just random as hell