was it correct to try a semi bluff here?

[Noodles]

Not totally sure of what exactly a semi bluff is,i think my river and turn bets were,or are they bets for value.
the river bet was just a pure bluff

Paradise .50/1 tightish
I am in UTG+1 with Q /images/graemlins/spade.gif T /images/graemlins/spade.gif
Utg folds,i call,MP1 calls,button raises,blinds fold,Me and MP1 call

FLOP [ 9 /images/graemlins/heart.gif 4 /images/graemlins/spade.gif 9 /images/graemlins/spade.gif ]
I bet out,MP1 folds,Button calls.
Ok now i think button cant have a pair as he would have raised.

TURN J /images/graemlins/club.gif

Now i have a load of outs so i bet , he calls.

River [ 4 /images/graemlins/heart.gif ]

Ouch,but i try a bet anyway ,he calls.

I thought the flop and turn bets were good,but what about the river bet,should i have just given up and checked?

[rigoletto]

Hi Noodles

I like your flop bet because you might take the pot right there (this board is not likely to have hit anybody). I also think the turn bet is OK with the combination of all your outs and the chance that he'll fold a hand like AK (yes this is a semibluff).

Once he calls the turn you should check the river. There aren't really any hands he would call the turn with that he wouldn't also call the river with.

[Noodles]

Thanks,then what is a bet for value.
say it was the same hand on the turn but with 3 others in the pot,a bet from me would be a value bet if i know the 3 will call,correct? Can you explain the math of this?

[Bob T.]

A bet for value, is a bet that you make, where you expect to be called, and you expect that you will profit from the call.

There are two main classes,

1 - When you have a made hand, and you expect that your hand will be good often enough that you will be better off betting, than checking.

2 - When you have a draw, and you expect that you will be called by enough people, so that you have positive expectation on the bet.