nice video. really enjoy it
Eliminate Blunder!

I like the video however
I think the underlying cause for blunders are many factors. like too little sleep, worries not related to chess, wrong food, drinking
in some tournaments I came home from work and had barely the time to eat because I had to drive 1 hours to a tournament only to eat a Mars bar.
I might not have gotten the right sleep because I already got up early
and even some days were totally bad for me I didn't skip chess even though I had a headache ...if you are in for a penny you are in for a pound.
I sometimes made the strangest blunder by calculating a line and suddenly realize that I based the calculation on my bishop being on a white square but it was a black bishop....or my knight could jump a way it couldn't
...I have no idea why.
Free video by GM Igor:
http://gmigorsmirnov.blogspot.com/2012/11/how-to-eliminate-blunders.html
his voice is funny...lol.but he's a great coach.