[Tom Bayes]

Thanks to Shootah and BigPooch for their responses. I appreciate Pooch's thought process in approximating the equity, even with some pertinent details missing. I don't have the hand history available, so everything is from memory.

The event was pot-limit (it was at 24h). I believe the blinds were 500/1000 (might have been 800/1500). A rough guess of stack sizes were: me 22K, button 20K, BB 12K, UTG 2K. My other cards with my QQQ were low-don't recall exactly, but certainly not aces or faces.

I ended up folding, feeling pretty sure that I would be drawing uphill against at least one and maybe two pat hands. I obviously didn't have a chance to do the calculations to estimate equity, but my instinct told me that it was better with a fold.

Here's what happened-one of the most AMAZING hands I've seen.
UTG draws one, Button raps pat, BB draws two.
UTG shows down AAKKx, failing to improve aces up.
BB shows down unimproved 666.
Button shows 34567 of spades for the pat STRAIGHT FLUSH.
We were all drawing dead and both UTG and BB are eliminated.

I'm down about 2.5 to 1 in chips, manage to crawl back to even at one point before eventually finishing second in a rather lenghty HU duel. The penultimate hand (which crippled me) was me losing queens up to kings up.