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flopToRiverAtLeastOneHitUnionTwoCategories

Two out categories with card-level overlap; sharedAb = intersection size.

flopToRiverAtLeastOneHitUnionTwoCategories(unseenAfterFlop: number, outsA: number, outsB: number, sharedAb: number): number

Import​

const poker = require('poker-calculations');

ESM (Node):

import { createRequire } from 'module';
const require = createRequire(import.meta.url);
const poker = require('poker-calculations');

When to use​

Combine flush outs and straight outs when some cards count toward both (overlap). Union size is outsA + outsB - sharedAb before the two-street hit formula runs.

How to use​

const unseen = 47;
const flushOuts = 9;
const straightOuts = 4;
const shared = 1; // one card is both flush and straight out

const p = poker.flopToRiverAtLeastOneHitUnionTwoCategories(
  unseen,
  flushOuts,
  straightOuts,
  shared
);
console.log(p);

See also​

flopToRiverAtLeastOneHitProbability · flopToRiverAtLeastOneHitUnionThreeCategories