River aboslute nuts, check? (NL100)

[CalledDownLight]

Ok, I have no reads, but he's got to have an ace, 2 pair, or a set here all the time right? The thing is, if he has the Kd or Qd he is basically always going to bet if checked to and obviously will call a shove. However, if I shove what other hands could he have that he'll now call with? I really can't see many. Do we think there is enough of a chance that he'll bluff at the pot to make it worth checking here? If you think shove is better then explain what you're getting called with besides the Qd and Kd.

PokerStars No-Limit Hold'em, $1.00 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($18.50)
UTG+1 ($109.20)
MP1 ($52.90)
MP2 ($178.70)
MP3 ($97.50)
CO ($80.40)
Button ($98)
SB ($78.20)
Hero ($112.05)

Preflop: Hero is BB with 7[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">MP3 raises to $3</font>, <font color="#666666">3 folds</font>, Hero calls $2.

Flop: ($6.50) A[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP3 bets $5</font>, <font color="#CC3333">Hero raises to $17.5</font>, MP3 calls $12.50.

Turn: ($41.50) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $29</font>, MP3 calls $29.

River: ($99.50) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero ???