If he has a made
flush you need 22.8%
fold equity. However I
don't think he is ever folding a
flush, esp. if it's A or K high as is likely since he raised
UTG pre.
Maybe he could be doing this as a semi-
bluff himself if he is holding the As or Ks, but in this
case I am not sure how confident you can be that he will
call your
shove. edit: he probably would as he most likely would have As or Ks + another
overcard, so his
draw looks stronger to him than it actually is as he can't put you only on sets
Against a {AsKs,AsQs,AsJs,KsQs,AcKs,AdKs,AhKs,AsQc,AsQd,AsQh ,AsJc,AsJd,AsJh,KsQc,KsQd,KsQh}
range I have you at 61.7%
equity. I discounted the oversets and AsA and KsK because it seems very unlikely he would
check the
flop with these on this board.
Against this
range I would
shove and hope he calls with his draws. If not, you always get the
dead money to compensate a bit.
Now to stick with your initial scenario where he only
check/minraises you with a made
flush, and on the premise that he will never
fold his
flush, it seems better to
call to see the next card (you have enough
implied odds): since his hole cards do not
pair with the board, you have 7 cards out of 45 (15.5%) in the deck giving you a FH or
quads on the
turn. The
pot odds are 18.6%, but you almost certainly get at least an extra
street of value when you hit. And if you
don't hit you may be lucky on the
turn if he continues to
slow play it and bets silly small again, then you might be priced in to see the
river.