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tournamentDuelAbsorptionProbabilities

Discrete heads-up duel Markov model: absorption probability, expected hands until elimination, and optional prize EV for the hero.

tournamentDuelAbsorptionProbabilities(heroStack: number, villainStack: number, winProbabilityPerHand: number, chipsPerAllIn: number, winnerPrize?: number): TournamentDuelAbsorptionResult

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​

Modeling a short-handed duel for first place with fixed per-hand win rate and all-in step size — for study, deal math, or bot planning without full table ICM.

How to use​

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

const r = poker.tournamentDuelAbsorptionProbabilities(
  25_000,
  15_000,
  0.55,
  5_000,
  100_000,
);

console.log('Hero win probability:', r.heroWinProbability);
console.log('Expected hands:', r.expectedHands);
console.log('Hero prize EV:', r.heroPrizeEv);

If winnerPrize is omitted, it defaults to 0 and heroPrizeEv is zero.

Return type​

TournamentDuelAbsorptionResult.

See also​

icmExpectedPayouts · icmShapleyValues · Tournament, runouts, and bots