The Two-Street Rule: How PLO Turn Betting Works
Turn value in PLO is river value worked backwards. A pot-sized river bet wants to be good about 80% of the time against the range that arrives there. Your opponent defends roughly half their range against a pot-sized turn bet. So to bet pot twice, you want to be good about 90% on the turn: they call with their best half, 40 of your 50 winning cases survive the filter, and you land on the river good 80% against the calling range. Beat 10% on the turn, beat 20% on the river. Same rule, one street deeper.
What makes this a PLO rule rather than a poker rule is what the solver does around the threshold. In PLO, most hands that can value bet two streets should, and most hands that cannot should not start betting the turn at all. They check, and take their value with one bet on the river instead. Hold'em plays these middling hands very differently, with far more one-street-now, reassess-later betting. In PLO the ranges are wide, the equities run close, and a turn bet that cannot be followed mostly builds a pot for the times you are behind. The practical filter on the turn is binary: does this hand want two streets, or is it a river bet waiting?
Do not carry this calculation back to the flop. Flop ranges are convoluted by check-raises, and there are too many turn and river combinations for "how often am I good right now" to mean much. The weighting shifts by street: on the river, value is the whole story. On the turn it is the dominant factor with some implied odds and board coverage. On the flop, value is maybe half the picture and board coverage becomes a first-class concern, because leaving a range without a hand class is dangerous when two streets of cards are still coming.
The factor players rank far too high in all of this is protection. It is a real input to solver strategy and a small one, yet it headlines the reasoning of most players who bet turns "to charge the draws." A useful test: if your hand will be weak and uncomfortable on most rivers, it is exactly the hand that is not worthy of a protection bet. Worthiness requires strength, and a strong hand already has a better reason to bet, which is value. Most players would get closer to correct play by ignoring protection entirely. The bet sizing reference shows the sizes solves choose per street and texture, and the c-bet frequency data shows how often each board wants a bet in the first place.