Hows my line - Am i correct to check turn to induce a bluff

[jipster]

BB ($31)
UTG ($100)
UTG+1 ($99)
UTG+2 ($225)
MP1 ($103.75)
MP2 ($29)
CO ($85.30)
Hero ($92.75)
SB ($99)

ANTES/BLINDS
SB posts blind ($1), UTG posts blind ($1).


PRE-FLOP : Hero has Kd 3d As Ac
BB calls $1, UTG checks, UTG+1 folds, UTG+2 folds, MP1 bets $3, MP2 calls $3, CO folds, Hero bets $10, SB folds, BB folds, UTG folds, MP1 calls $7, MP2 folds.

FLOP: 6s 2c 4h
MP1 checks, Hero bets $15, MP1 calls $15.

TURN: 4d
MP1 checks, Hero checks.

RIVER: Qd
MP1 bets $56, Hero bets $67.75 and is all-in, MP1 folds.

I have ZERO info on villain; no hand history; so i 'assume' he's raising here with 4 big cards; possibly KK in hindsight.

I check the turn because i think he's nowhere near and possibly drawing very slim, or even dead

Whats my line if he checks river?

thanks