[aislephive]

I haven't read any responses yet, but anyways this is such a sick spot. How loose is UTG+1? Does he limp and call raises a lot? How often has he raised preflop? This stuff is pretty crucial to analyzing his range. I'd say a hand range like the one below is probably pretty accurate assuming he isn't overly loose (plays any two suited).

Text results appended to pokerstove.txt

24,750 games 0.005 secs 4,950,000 games/sec

Board: Qd 6d 4d
Dead:

equity win tie pots won pots tied
Hand 0: 31.293% 31.29% 00.00% 7745 0.00 { 5d3d }
Hand 1: 68.707% 68.71% 00.00% 17005 0.00 { 66, 44, AdJd, AdTd, Ad9d, Ad8d, Ad7d, As7s, Ad2d, KdJd, KdTd, Kd9d, JdTd, Jd9d, Td9d, Td8d, 9d8d, 9d7d, 8d7d, AdQc, AdQh

We need 31.6% equity to make the call correct, and we have 31.3% given this range. You could tweak it a little to make a call correct or tweak it a little more to make it more of a fold (ie add more flush combos). I could see a live player occasionally playing QQ like this as well, but that's pretty unlikely.

Some more specific reads would help a ton, even little things. Could he go broke here with like bottom two pair? Is Q6s in his range to limp/call preflop?

As it is, I think calling and folding have around the same EV in the long run. Calling or folding is never going to be much of a mistake either way.