Too many to tell, especially after moving my Queen out very early.
Do you have a "blunder story" to share?
Two years ago, on a night much like tonight, it was a windswept evening, the rain could be almost felt as it drummed out a spead patter. I dropped a rook in the middle game but came back to win in 106 moves. Now that is a story!!

MY story is not a blunder it is a time fiasco. I played the south of England Gigafinals, 6 round swiss tournament, 30-minute time controls. I won my first to games coasting through. Then i come up against this guy who was not a bad players. I had him all stitched up on time. I had 20 minutes left he had 10 seconds, NO JOKE. I was holding the position he had a little initive but no time to use it. I played a silly blunder which set up checkmate i one move. I was so angry with myself. I should have just batted out the game but i had a shocker.

I don't even remember how it happened, use your imaginations.

thats a common trick in the Petroff defence (i think that's its name). the way to prevent it is 3...d6! sending the knight away and allows you to take the pawn back. But my advice is dont play that defence!

Mine went something like this. At school I am voted num 1 at our chess club except there is one guy who i cant beat. I had the opportunity to beat him but we went into a K+P vs K+P endgame, basically a probable draw. We both promoted and then I stupidly did this:

thats a common trick in the Petroff defence (i think that's its name). the way to prevent it is 3...d6! sending the knight away and allows you to take the pawn back. But my advice is dont play that defence!
No you don't understand , I was playing white, I acheived the position in the above diagram...AND I LOST!

Kupov. Same thing happened to me once. I used that move in the Petrov and won the queen but he still kicked my butt later...some people resign right after that move. lol.
razorblade12...I think you may have beat us all in the blunder contest.

Of course we do, we all do. this is were I post my very worst
and get absolution...
http://www.chess.com/groups/view/blunders-confessional

I once was up a piece and a couple pawns in an endgame with plenty of time left and I lost.
fluff. that happens to me 3 times a week.
Misery loves company. I am looking for people to commiserate with. Please post your "worst blunder" stories here. I'll start:
Today, I was well ahead In the end game having promoted a pawn to a queen against my opponent's few pawns. It should have been simple. For reasons I can not explain, I placed my queen so it could be taken by a pawn. Worse, I could not stop the pawn from promoting. With no counter play, there was nothing to do but resign. Unfortunately, this was the last unfinished game in my group of a tournament. The loss gave my opponent a half game advantage over me to win the round. So in addition to loosing, I was also eliminated. Yes, it was a bone-headed move.
Yes, I can only laugh at myself and play on. 