I'm interested to find out what players' least favourite play against them is, the one which frustrates them most. I'm sure we all have them.

Mine is the re-rebluff which doesn't come off. The rebluff is possibly the strongest play in poker, but when it doesn't come off, it can leave you feeling stupid!

Example - I raise pre-flop, have one caller. Flop comes a medium or low pair and a rag. As the raiser, I bet with two connected overcards, QJs say. Opponent re-raises. I put ithe opponent on an ace with a middle-high kicker and so put in a huge re-reraise (perhaps all-in, representing a big pair with my pre-flop raise) and opponent calls. He has two overcards, such as AK or AQ (my read is right) which is ahead of my QJ, and neither of us hit.

Had I been in my opponents situation, I would have folded when facing the huge re-reraise, which is the correct play as I would be holding not a lot, unless I think the other player is bluffing. If my opponent has read me for a bluff, then I've been outplayed fair and square. But a lot of players can't let go of hands like AK when the flop doesn't offer any help. In the long run this is an inadvisable strategy and I will take the money over a period of time, but in a tournament it can lead to elimination. But, that's poker!

Which type of play do others find frustrating?