What was your most dramatic come back in chess like?

Whoops, don't know if I wrote he title right but I meant if you have ever been losing and then in just some moves winning? Or maybe vice versa. 

EDIT: Thanks to Joe_Blob, I changed "turn" into "come back" now.

I had the black side of an Advance French in an OTB game and had an hallucination at move 10.  My opponent played well and pounded the crap out of me for 40 moves.  On move 51, he was below 5 minutes and stopped recording the moves.  In this position: WKf2, WRe8, WPa2; BKf5, BBb5,BPe5, White played Ke3 and resigned after Bxe8--my most undeserved tournament win.

harryz

I did that game!  And not just one; it was a double-hallucination.  And I wish I could blame it on my chemical friends, but they were not in my head at the time.

i had white side birds oppening junior champ just gambited a pawn i found a varition that can trap the qeen but i missed a move it weakend the back rank i noticed the motif analyzed and i thought it didnt win so i played something else and i lost to a girl she sad the way i accted with so much swag was bad.Home i analyzed and i shold have one the game in 10 moves

harryz

What happened in my game was that I analyzed a position that I thought I was winning a pawn, and if my opponent played for activity his queen would be trapped.  After I moved, the fact that I not only did not win a pawn, but my refutation ("winning" the q) was a mate-in-two for white became clear.  My eyes told me a lie and my mind showed how foolish I was, but only after the damage was done.

I played 1. e4 e5 2. Nf3 g6? against a 2200 rated player and got away with it! I got a victory, but does that count as a turn? I don't know, up to the reader I guess.

So, I was playing a 2200 (not sure if he was an NM or not, but anyways), and eventually we both had under 5 minutes left. I turned down the chance to take a perpetual because I was pretty sure I was better (and I was!), and then about 5 moves later in a time scramble, I hung an exchange, but then he got himself mated 10 moves later 

I had a pretty dramatic turn in a game yesterday. I was losing -+, and my opponent played a sensible-looking blunder (...Qa6) that made it +/- if I spotted the tactic (which I did). Here it is as a puzzle if anybody wants to solve it. It's only a one-move tactic, but it's a bit unusual, and I don't recall having seen this particular combination of themes before.

I was playing in a G-30 tournament. I explained to my opponent before the game that my son had won his section and I would be leaving for a few minutes to take pictures but to let my clock run.

My opponent was rated 360 points higher than me. I had 1.5 points out of 3 against folks averaging 250 points higher than me in the first three rounds, and was now playing this guy who was close to two full USCF categories above me, so I was giving up five minutes against a guy who should beat me 49 times out of 50.

I played well after I returned, but had to play quickly. I made a few gutsy moves and had the initiative, but make two or three less-than-optimal choices and the tables turned. With less than a minute to my opponent's ten, I was playing determined defence. He had my king surrounded but material was even and I was pulling defenses out of nowhere until he finally forced me to lose a piece.

Rather than go down quietly, I used the lost piece to bust up his King's position. I then withstood another withering attack, finding ways to use my pieces to protect each other and make counterthreats. He continued to play well, until... until... until... he missed a counter threat.

I forced him into a choice between losing a Rook and facing mate. He thought he saw a way out, but ended up going down a full Queen instead of just the Rook.

But I had 17 seconds left. With the delay I had enough time to think about each move for a couple seconds, but it was almost pure reaction chess. Replaying the game, I made less-than-optimal moves according to the computer, but I was playing for safe chess. I traded off pieces, locked up his pawn structure, then simply picked his pawns off one by one until he resigned.

I went into the tournament rated 1538 and when I left, I was rated 1664. It was a good feeling to finally break through against the class A's (all four of my games were Class A's). It felt doubly good getting a 126 boost in the rating in one day.

Yes, "come back", how could i forget that. Nice stories.

Maybe not the most dramitic, but here is a game which I consider my "best win" on chess.com. At the beginning of the game I think I was rated about 2000 (maybe even a bit lower) and he was rated about 2400, so the rating difference was much bigger at the start compared to at the end. I was a bit worried when I started walking with my king and he sacrificed material, but then the attack ended and I got a better endgame where he had to play very accurate in order to draw with a pawn behind in a knight vs bishop ending. He failed to play accurate and I even managed to win.  I think he had a clear advantage in the middlegame, so I think it is correct to say I made a comeback.

By the way that was also the longest game I've played on chess.com as well. It started on 22 Nov - 2011 and finished on 6 May - 2013. That is about 1,5 years.  I'm currently playing my second game against the same opponent in a team match.

My most dramatic turn was when my opponent turned the tables - literally, knocking all pieces down.

This happened to a friend of mine. He was grinding out a dead-drawn endgame. He got up and left the board, to use the restroom. When he came back, he saw his opponent had made two moves. He let it slide though, and continued playing. Because those moves were both blunders! He went on to win the game.

This is my moment thus far:
White just played 39. Kf3 ?? - I have 10 seconds or so on the clock. He has over 5 minutes. It looks like the pawn on f4 is in trouble and I have to go on the defensive. However, thanks to TT I spotted the winning combination in a split second. Yay!

Originally written here: http://unratedtogm.quora.com/Progress-Report-96-7-percentile 

Amazing game, @Martin0.

My best come back... Hmm, I managed to come back actually twice in a game with my friend last year. I was down the exchange, but he blundered his rook, then I blundered my bishop and at the end he blundered a won endgame. We drew. :)

http://www.youtube.com/watch?v=XgOijcEDPbI

Crucial points: 20:00, 27:30, 28:00, 30:00

How about this one:

Nice one whirlwind. Below is one of my strangest comebacks where I got a draw. I just wanted to try to avoid getting mated as many moves as possible before resigning to see if he could mate me (if the attack ended or he shows no interested in attacking, then I intended to resign). Then, well just look at what happened. 

This just happened to me at my local club this morning. Not my proudest moment:

Well, it was a turn-around.