What is the turn play?

[bodnotbod]

: toxic grunch :

Ach!

Very difficult.

He could have slow-played the flop fearful of not getting any action with his trip kings or flopped Qs full. Alternatively he has much less and took your check as weakness.

Maybe he thinks with a double-paired board his A high would be good (although I might tend to ascribe that kind of thinking to an advanced player: dunno if I'm off-beam there).

I'd probably play it how you did. But I susepct betting the turn and folding to a raise might be recommended by better players; you'll have at least have made an attempt to find out where you stood. The way you played it you never get to find out til the river.