5-Card PLO

What actually changes from PLO4

Most PLO5 advice is PLO4 advice with a card added. These are the measured differences, from a full enumeration of all 2,598,960 five-card combinations grouped into 134,459 suit-equivalent classes.

4.17%of PLO5 hands hold at least two aces, against 2.57% in PLO4
36.5%are double-suited, against 13.5% in PLO4
0%are rainbow, because five cards cannot avoid four suits
142classes tie for best hand, all within the error bar

The top of the game is a tie, not a hand

At 200,000 trials per class the standard error is about 0.11 percentage points, and the best 142 classes all sit between 65.1% to 65.6% against one random hand. Ranking them 1 to 142 would be presenting noise as precision, so we publish the band instead. The group has a clear shape though: every member holds exactly two aces, 90% are double-suited, and the side cards cluster on T, 8, 9. A representative member is A-A-T-9-9 double-suited.

Premiums are worth less because everyone has one

Being dealt aces goes from 2.57% of hands in PLO4 to 4.17% in PLO5 - roughly one hand in 24. The hand that felt like a monster in PLO4 is now a hand somebody else at the table also has, which is the single biggest adjustment for a player moving over.

It compresses hard multiway

Against five random opponents those same top hands keep only 26.0% to 30.5% equity, where an even share would be 16.7%. An edge that looks decisive heads-up is a much thinner edge at a full table, and PLO5 pots go multiway more often than PLO4 pots do.

Where to go next

One thing we do not have: the solver library is 4-card PLO and 6-max NLHE. There are no PLO5 solves in it, and no public PLO5 solver exists that we would trust to quote. The PLO5 coverage here is calculators, reference data and the tracker. If a solved PLO5 strategy is what you need, we are not it.

Questions

Is 5-card PLO harder than 4-card PLO?
Equities run closer together. The best PLO5 hand holds 65.1% to 65.6% against one random hand, where the best PLO4 hand holds about 71.5%. You are dealt aces far more often (4.17% of hands against 2.57% in PLO4), so a premium is worth less because everyone else has one too.
Can a 5-card PLO hand be rainbow?
No. Five cards across four suits means at least two of them share a suit, so every PLO5 hand is suited somewhere. Rainbow is a PLO4-only shape, and it comes up in about 10.5% of PLO4 hands.
How many 5-card PLO starting hands are there?
2,598,960 combinations, which reduce to 134,459 suit-equivalent classes once hands that play identically are grouped.
Does SolvePoker solve PLO5?
No, and we will not imply otherwise. The solver library is 4-card PLO and 6-max NLHE. What does cover PLO5 is the free equity calculator, the range calculator, the hand-distribution tool, the published rankings dataset, and the hand tracker, which parses PLO5 hands and reports full stats on them.
What is the best starting hand in PLO5?
There is no single best hand. The simulation cannot separate the top 142 classes - they all sit between 65.1% to 65.6% against one random hand, which is inside the error bar at 200,000 trials per class. Every one of them holds exactly two aces and 90% are double-suited.