[ QUOTE ]
A possible play in this situation is to raise the flop.
If he just calls he has K rag.
If he raises he has good king or a three.
The raise will get you free play when it is not so expensive on the turn sometimes.
If he three bets you just lay it down.
[/ QUOTE ]
Raising will tend to get weaker hands to fold, while you continue to pay off stronger hands. Since raising will not get the weaker hands to pay more, and it will make you pay more to the stronger hands, it has to be less than optimal. (optimal would be a losing hand putting his entire stack in, while paying 0 to a hand you're significantly behind)
The question is then, should you fold or call? Since you're getting 4.25:2.5, you only need to have 37% equity to make a call down profitable. It's really hard to select a range of hands here for villian, but a reasonable selection shows you have more than eneough equity to call down.
<font class="small">Code:</font><hr /><pre> 234,630 games 0.047 secs 4,992,127 games/sec
Board: Ks 3c 3d
equity (%) win (%) / tie (%)
Hand 1: 41.4011 % [ 00.41 00.00 ] { JJ-22, AQs-A7s, KQs-K2s, QJs-Q9s, AQo-A8o, KQo-K6o, QJo-QTo }
Hand 2: 58.5989 % [ 00.58 00.00 ] { QhQc }</pre><hr />