I’m open to arguments to the contrary, but I think shoving a Q here is pretty bad on Villain’s part without a very specific dynamic that almost certainly does not exist in this hand. Hero can have better and is never calling with worse, so check-shoving a Q is just a reverse freeroll for Villain.

With black Kings, I think betting the turn makes a lot of sense. In that case, there’s a lot to lose by letting a random diamond see the river for free. With the Kd, though, Hero is likely way ahead/way behind. Getting check-raised on the turn sucks because Hero may have 11 outs but he also may have only 2 outs. Combine that with the fact that Hero probably can’t get two streets of value out of his hand anyway, and I’d rather check the turn and bet the river than vice versa.

Maybe I’m missing something, but what I can’t get past here is Hero’s check on the turn. After Villain’s c/c on the flop, Hero has to think he’s looking at a large range, with many of the holdings having him beat. On the other hand, Hero has the Kd and the board is paired, so he’s got 9 outs to beat a made flush (unless Villain has the Ad). Don’t you absolutely *have* to bet for info and possibly drive out the Ad draw?

If I had to guess, I’d surmise that Hero was playing scared post-flop. He’s probably thinking something like this: “Grr, he called my flop bet. That’s probably two garbage diamonds, with this guy being a LAG-tard and all. [turn] Crap, the flush just hit. He’s going to crack my $(!#& kings with seven-three, I just know it. Maybe I should bet here and see if I’m beat. No, wait. If I do that, he’s just going to bluff-shove back at me even if I do have him beat. And I won’t know. So, umm, okay, I’ll check behind. [river] Oh, fabulous, crabulous day! Now I’ll punish him for playing those garbage diamonds….”

It seems to me that the way out of *that* dilemma is to shove the turn, right? It’s either that or bet and fold.