[AaronBrown]

I think it's theoretically possible that no one made a mistake. The first player to check obviously could have a checking hand. One check makes the next player more likely to raise or fold, because he knows he's playing against a checking hand. But there are still hands too speculative to raise, but too good to fold.

Each subsequent player needs an even more perfect checking hand. If I think I'm playing against several guys with suited connectors, I'll raise on any high cards or pair, and fold almost any flush or straight possibility. But if I have suited J 10, I can't raise except as a pure bluff, but I like my chances with a good flop.

If the first guy to check could do it again, knowing that he was checked, he would probably raise or fold. But based on what he knew at the time, he could have done the right thing.