Four hole cards is ~270,000 combos, so there is no preflop grid. This runs a live high-only equity simulation against a realistic continuing range, then reads the hand on PLO terms: nut-ness, double-suitedness, wraps and rundowns, and the traps that quietly burn money, danglers, bare small pairs, and second-best flushes.
Effective Stack
Your Position
Opponents In
Opponent Hands
Your Hand
PLO truths baked in: equities run close, so being a small favorite preflop matters far less than flopping the nuts or a nut draw. The realistic model has opponents continue with a ~40% range, not random cards, which is what exposes domination, the curse of the non-nut flush, and small sets that flop into bigger ones. PLO is pot-limit, but at 10 to 30BB it plays close to all-in, so "jam" here means commit. Fair share is your break-even slice; clearing it is the bar to keep playing.
Monte Carlo, exact 2-from-hand / 3-from-board, high hand only seeded RNG, 95% confidence interval, realistic opponent range, push/fold EV at 10BB