The game is 1-2 no limit hold'em. The table is very lively with lots of multi-way pots. The player I'm focused on is a regular, winning player in this game.

He's in the small blind with a $200 stack. An early, very loose player limps. A solid, winning player makes it $10. After two late callers, our guy calls, as do the big blind and the limper.

So it's 6 ways and $55 to the flop - Ac Kc 4s.

Our guy checks, the big blind checks, the loose limper ($200 stack) bets $10 and the pre-flop raiser ($300 stack) makes it $60. Two folds and our guy calls the $60 (leaving himself $130 behind). The bad player folds.

It's now head-up with the pre-flop raiser (who has him covered) and $185 in the middle.

Fourth street is the 10s and our guy moves in.

What specific hands do you think he could have here?

AT+, A4s, QJcc JTcc QTcc 44

If he is good he has a lot of 44 and AK in his range and small chance of A4s. Flatted the flop in hopes that the original raiser would bet again on a brick turn but the board got too dangerous. AT/TT that didn't give up on flop is also possible. Small chance of combo draw, either QcJc that just got there or QcTc/JcTc that are now pair + straight and flush draws.

Not so good villains can turn up with other QJ. Bad ones can turn up with badly played AQ/AJ, worse two pairs and worse draws.

Given your descript: AK/44/JcTc+.