Not if none have been put down by your opponent at all by the end of 0 tiles and yes I agree I've had a couple where it's got up to 32 before I could meld which is why I wait until 33. There has to be a cut off point where you have to change tactics though, for those who don't just incase, cos if you don't and they put down 3 and then 1 at a time, they've automatically won by default simply because you've already put down 9 or so tiles before you realize they're playing a different tactic to you.