name: racetrack
aliases: [voisins, tiers, orphelins, zero, jeu zero, jeuzero, neighbors, neighbours]
category: Interaction
related: [roulette, casino]
description: |
  Racetrack bets (single-zero racetrack tables only)

  The oval follows physical wheel order, not numerical order. Named
  bets place several chips for you; the amount is the TOTAL stake.
  For example, bet 9 on voisins places nine 1-credit chips.
  Profit odds below are on the total stake; wins also return that stake.

  voisins - Voisins du Zero: 17 pockets around zero, using 9 chips.
    Two on trio 0/2/3, two on corner 25/26/28/29; one each on splits
    4/7, 12/15, 18/21, 19/22 and 32/35.
    Profit: 5:3 on 0/2/3, otherwise 1:1. Chance: 17/37.

  tiers - Tiers du Cylindre: the 12 pockets opposite zero, 6 chips.
    One each on splits 5/8, 10/11, 13/16, 23/24, 27/30 and 33/36.
    Profit: 2:1. Chance: 12/37.

  orphelins - the remaining 8 pockets, 5 chips.
    One on 1; one each on splits 6/9, 14/17, 17/20 and 31/34.
    Profit: 31:5 on 1 or 17 (two splits win on 17), otherwise 13:5.
    Chance: 8/37.

  zero / jeu zero - 7 pockets within Voisins, 4 chips.
    One on 26; one each on splits 0/3, 12/15 and 32/35.
    Profit: 8:1 on 26, otherwise 7:2. Chance: 7/37.
    bet 10 on zero (or jeu zero / jeuzero) means Jeu Zero;
    bet 10 on 0 means just pocket 0.

  neighbors <n> - the chosen pocket plus four on either side, 9 chips.
    One straight-number chip per pocket. Profit: 3:1. Chance: 9/37.

  Fractions are rounded down after adding winning chip returns.
  Use a stake divisible by the chip count to avoid rounding.
  One named bet per spin; table shows a compact payout reference.