Known players: (for a description of vp$ip, pfr, ats, folded bb, af, wts, wsd or hands click here)
[tg]Position_Stack:hands/vp$ip/pfr/af/wts/ats/foldbb/w$sd;MP2$600,00:///////;Hero$147,00:///////;UTG+1$483,00:///////;[/tg]
3,00/6,00 No-Limit Hold'em (9 handed)
Hand recorder used for this poker hand: Texas Grabem 1.9 by www.pokerstrategy.com.
Preflop: Hero is BB with 4♥, 6♠
UTG+1 calls $6,00, 2 folds, MP2 calls $6,00, 4 folds, Hero checks.
UTG (32/15/158)
MP2 (19/7/3.5/20/8.4k) Jinsu416
Flop: ($21,00) Q♠, 9♠, Q♦ (3 players)
Hero checks, UTG+1 checks, MP2 bets $6,00, Hero raises to $21,00, UTG+1 folds, MP2 calls $15,00.
steal limped Pot 92%
bet from last to act is mostly a steal, so a c/r would give me a very high FE.
Turn: ($63,00) 2♣ (2 players)
Hero checks, MP2 checks.
c/f
River: ($63,00) 2♠ (2 players)
Hero bets $42,00
2 
= scarecard?
I dont think he will slowplay a Q on Flop and Turn, also a FD could 3-bet on the Flop, but also can take a freecard on the Turn, same for JTo.
I need a Bluffefficency of 0.7 (70%) to be BE. He will fold 9x, JT, maybe some Gutters KT, KJ and every PP.