While we have equity, raising into a range that contains all the flushes and straights turns a bluff-catcher into a disaster.
Flop Analysis
Calling is mandatory here. We have an open-ended straight draw to the nuts and two overcards on a paired board where the aggressor will be c-betting frequently.
**Board:** The paired texture reduces the number of trips Villain can have, but the two spades and broadway cards favor the preflop raiser's range of high cards and pairs.
**Math:** Getting over 4:1, we only need about 20% equity to continue. With our straight draw and overcards, we are well above that threshold against a standard c-betting range.
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> **Takeaway:** When you have a nut straight draw and great pot odds in position, calling is the most efficient way to realize your equity.
Turn Analysis
Raising here is a significant error. The turn completes both the spade flush and multiple straights (AK, K9), most of which are in the UTG+1 range. By shoving, we only get called by hands that have us crushed.
**Ranges:** Villain's range is extremely strong here, containing flushes like As6s and straights like AK. Our two pair is essentially a bluff-catcher that blocks some of the straights we want Villain to be bluffing with.
**Math:** We are facing a near pot-sized bet with an SPR of 0.5. While we have a pair and a draw, we are behind a massive portion of the range that is willing to put the rest of the money in.
**Plan:** The solver prefers folding over 70% of the time. If we do continue, calling is the only viable option to keep Villain's bluffs in; raising forces out everything we beat and isolates us against the nuts.
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> **Takeaway:** On boards where the most obvious draws complete, avoid turning marginal made hands into bluffs by raising.
Note: Raising here is a massive overplay; the board has become extremely coordinated with flushes and straights completing, meaning your two pair is now just a weak bluff-catcher.