Blinds $0.50/$1.
UTGPlayer6: $100.
UTG+1Player1: $155.45
COHero: $111.
DPlayer3: $102.
SBPlayer4: $114.
BBPlayer5$: 84.17
Preflop

Hero is CO $1.50
KsQh.
2 folds, Hero raises to $2.50, 1 fold, Player4 (SB) raises to $8.50, 1 fold, Hero raises to $20, Player4 (SB) calls $11.50

Flop

$41 2
9s4sKh.
Player4 (SB) checks, Hero bets $11.68, Player4 (SB) calls $11.68

Turn

$64.36 2
9s4sKh Js.
Player4 (SB) checks, Hero checks

River

$64.36 2
9s4sKh Js7h.
Player4 (SB) goes all-in $82.32, Hero???

Hi,

It s against regular with out special reads (Party Poker).
I really dont know, what to do. There are arguments for both c/f. So what to do?

thanks :)