Bidou

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Bidou and the closely related Montevideo are dice games which are scored according to the combination of three rolled dice; each player rolls their set of three dice simultaneously, then checks their values while keeping them concealed from other player(s) beneath a cup. Each player then wagers into a common pot, based on their roll, before revealing the dice to the other player(s); players may bluff to hint or mislead others about the strength of their concealed roll, similar to the gameplay of poker.

Contents

History

The origins of Bidou are unknown; in 1934, George Gaylord Simpson wrote it appears to have been invented in the early 20th century, bearing superficial resemblances to poker, but was unknown in the United States. [1] : 145  Jack Botermans calls it a European game, [2] : 337  while earlier sources from the mid-20th century trace it to the coastal cities of South America (Argentina, [3] [4] Peru, [5] : 24–25  or Punta Arenas, Chile). [1] : 140  In a biography of John F. Kennedy, Geoffrey Perret claims that JFK learned to play bidou in 1941 while sailing to Rio de Janeiro aboard the SS Argentina with mostly South American passengers. [6] : 93 

Gameplay

Equipment

Each player receives three dice and a throwing cup to roll and conceal the dice. Chips or other tokens are used for wagering; [7] : 55  [8] : 110  nine chips are required for the two player game, or six per player if more than two are playing. [2] : 337 

Objective

In the standard game, the losing player receives the pot, so the objective is to be the first player to lose all their chips. [7] : 55  [8] : 111  [9] : 303  The game also can be played in the conventional manner, which is called "Montevideo". In this variation, the winning player receives the pot, and the objective is to amass as many chips as possible. [8] : 113 

Captain

Each player rolls to determine the "captain" of the round. The captain is required to make the first bet, or pass, if they have made fewer or an equal number of throws compared to their opponent(s). [8] : 110  Either one [8] : 110  or all three dice may be rolled. The captain is the player with the highest roll on a single die; when more than one die is rolled, the next-highest single die may be used to break ties; for example, 6-5-3 would beat 6-4-4. [7] : 55 

For subsequent rounds, the captain is generally the winner of the prior round, [7] : 58  [8] : 111  unless all players pass on betting, in which case the captain's role passes to the player on the left of the prior captain. [8] : 112 

Rolling

Once the captaincy has been established, each player throws their dice and conceals the roll beneath the cup. If the player is not satisfied with their roll, they may re-roll; however, players are limited to three rolls in total, including the initial roll. Once the player is satisfied, or they have reached the limit of three rolls, they announce the number of throws they have made. [8] : 110 

In one variation described by Botermans (2008), after the first round, a player may choose to keep the result from one or two of the rolled dice and re-roll the other(s) for their re-roll attempts. For example, if a player rolled a relatively low 5-2-1, they could keep the 2 and 1 and re-roll just the 5 in an attempt to gain a higher-ranked combination of 2-1-1, 2-2-1, or 4-2-1. [2] : 342 

Scoring

Bidou special combinations [a]
BidouSimplified
RollOddsRollOdds
2-1-1 [b]
"bidou"		3⁄2162-1-1
"bidou"		3⁄216
2-2-1
"bidé"		3⁄216
4-2-16⁄216
6-6-61⁄2166-6-61⁄216
5-5-51⁄2165-5-51⁄216
4-4-41⁄2164-4-41⁄216
3-3-31⁄2163-3-31⁄216
2-2-21⁄2162-2-21⁄216
1-1-1 [c] 1⁄2161-1-11⁄216
3-3-63⁄2162-2-1
"bidé"		3⁄216
3-3-53⁄216
3-3-43⁄216
3-3-23⁄216
3-3-13⁄216
1-1-63⁄216
1-1-53⁄216
1-1-43⁄216
1-1-33⁄216
3-2-16⁄2164-5-66⁄216
4-3-26⁄2163-4-56⁄216
5-4-36⁄2162-3-46⁄216
6-5-46⁄2161-2-36⁄216
Others [d] varies [e] Others [f] varies [e]

The highest-ranked throw is a pair of ones with a two (2-1-1), which is called "bidou" and gives the game its name. There are 22 special combinations in Bidou, including "bidou", a pair of 2 with 1 (2-2-1, called "bidé"), a geometrical sequence using a multiplier of 1⁄2× from 4 (4-2-1), the six triple rolls (6-6-6, 5-5-5, etc.), [g] remaining pairs of 3 and 1 (3-3-x [h] and 1-1-y), [i] and consecutive sequential integers, also known as "ladders". [2] : 338  [8] : 110  There is one exception to the order: the triple-1 (1-1-1) beats "bidou" (2-1-1), but otherwise follows the listed order, being beaten by higher-ordered triples, bidé, and 4-2-1. [2] : 338  [8] : 110  The overall probability of rolling one of the 22 special combinations is 69⁄216 or 31.94%.

A simplified set of 12 special combinations can be used which omits the remaining pairs of 3 and 1 and the geometrical sequence. In addition, "bidé" (2-2-1) has been moved to follow the triples, and the sequential values have been re-ranked, so the high straight (4-5-6) outranks lower straights. [7] : 56  [9] : 305–306  For this simplified set, the overall probability of rolling one of the 12 special combinations is reduced to 36⁄216 or 16.67%.

Simpson (1934) describes a similar set of 12 special combinations, with the exception that bidé (2-2-1) outranks all triples, second only to bidou (2-1-1). [1] : 146 

Betting

Two players

With two players, nine chips are shared between the players, placed in the center of the table. [8] : 110  The player who has made the fewest number of rolls bets or passes first; if the players have made an equal number of rolls, the captain bets or passes first. [8] : 110  If both players pass, the round is over. [8] : 111 

Otherwise, after an initial bet is made by sliding one chip out of the pile towards that player (Player A), the opponent (Player B) may drop out (decline to bet), call (by betting one chip), or raise (by betting two chips). [8] : 111  If Player B has raised, Player A may similarly drop out, call, or raise. Once the other player's bet has been called, the round is over and both players reveal their dice to determine the winner. [8] : 111  Otherwise, the round ends if one player drops out or folds. [2] : 341 

The potential outcomes are:

  • When both players pass without betting, neither player takes any chips. [8] : 111 
    • Alternatively, if they are playing Montevideo, the pot remains and the new round requires another ante from each player. [7] : 58 
  • If a player drops out after betting starts, that player takes one chip as a penalty. [2] : 341 
  • After a bet or raise is called, both players reveal their rolls and the losing player takes all the chips bet. [2] : 341 
    • Alternatively, for Montevideo, the winning player(s) takes the pot, dividing as necessary if there is a tie. [7] : 58 

If the game reaches a point where one player has eight chips (Player X), they are entitled to an "open throw". [8] : 111  The other player (Player Y) rolls up to three times without concealing their dice. Then Player X may roll up to three times. If Player X is able to beat Player Y's roll, Player Y takes one chip from Player X and the game continues; otherwise, if Player Y beats Player X's roll, Player X takes the last chip and loses the game. [9] : 304 

Three or more players

Instead of a common pool of nine chips, each player is given six chips. [2] : 343  Similar to the two-player game, the player who made the fewest number of throws opens the betting; if two or more players have an equal number of throws, the player closest to the left of the captain opens the betting. [8] : 112  Otherwise, the captain makes the first bet. [2] : 343  The maximum bet is raised to three chips, and the maximum raise is two chips. [8] : 112  For Montevideo, each player contributes a predetermined ante before any betting starts. [7] : 57 

The potential outcomes are similar to the two-player game:

  • Each player who passes or drops out without betting (i.e., folding during their first opportunity to bet) does not take any chips, [2] : 344  so if all players drop out without betting, no one takes any chips. [8] : 112 
    • If all players drop out without betting in Montevideo, the pot is carried over from the prior round and the new round requires another ante from each player. [7] : 58 
  • Players who bet during their first opportunity and then later decide to drop out receive a penalty: [2] : 344 
    • The first player to drop out after making a bet takes back all the chips they had bet, all the chips bet by the players who have not dropped out, plus one additional chip as a penalty. [2] : 344 
    • Remaining players must drop out or bet, either calling or raising by an amount equal to that taken by that first drop-out. If they drop out instead, they take one chip as a penalty. [2] : 344 
  • If only one player bets and the rest drop out, the betting player discards one chip. [2] : 345 
    • If one player raises and the remaining players drop out afterward without calling, after the penalty chips are handed out, the remaining chips in the pot are given to the player who raised. [2] : 345 
  • After a bet or raise is called, the remaining players reveal their rolls and the losing player takes all the chips bet. [2] : 344 
    • Alternatively, for Montevideo, the winning player(s) takes the pot, dividing as necessary if there is a tie. [7] : 58 
  • When a player bets their last chip:
    • That player is not required to call any subsequent raise(s) and continues to play through the end of the round, showing their combination. [2] : 345 
    • If that player loses, they recover any chip(s) they had bet and all the chips from the other players who showed their combination at the end of the round; any chips left over from the pot are returned to the participating bettors. [2] : 345 
    • If that player ties, they recover any chip(s) they had bet; the player(s) that tie also recover their bet, save one chip. Any chips remaining in the pot are removed from the game. [2] : 345 

In the "poor fish" variation of the game, if all players pass, they expose their dice and the player with the highest combination takes one chip from each of their opponents as a penalty; [8] : 113  Montevideo has a similar "poor fish" variation in which the player with the highest combination contributes an extra chip to the pot. [7] : 58 

See also

Notes

  1. ↑ Ordered from highest rank to lowest.
  2. ↑ Highest rank overall, but beaten by 1-1-1. [2] : 338 
  3. ↑ Normally lowest ranking triple, but beats 2-1-1. [2] : 338 
  4. ↑ Ranked according to sum of pips. [2] : 338  [8] : 110 
  5. 1 2 For any pair (e.g., 5-5-n), the odds are 3⁄216 as this can be rolled in three different ways: e.g., 5-5-n, 5-n-5, or n-5-5. For a combination of any three unique values (e.g., 6-5-1), the odds are 6⁄216, as it can be rolled in six different ways: e.g., 1-5-6, 1-6-5, 5-6-1, 5-1-6, 6-1-5, and 6-5-1 are statistically different rolls, but all scored the same in Bidou.
  6. ↑ Ranked according to highest pip on a single die, then second-highest pip, etc. [7] : 56  This means 6-6-5 is the highest non-special combination, followed by 6-6-4, 6-6-3, etc. down to 3-1-1. [9] : 306 
  7. ↑ Triples are ordered by pips from highest to lowest, so triple-6 is the highest triple, while triple-1 is the lowest.
  8. ↑ For the remaining pairs of 3 (3-3-x), x is from the set [1, 2, 4, 5, 6], as 3 would result in the triple-3.
  9. ↑ For the remaining pairs of 1 (1-1-y), y is from the set [3, 4, 5, 6], as 1 would result in the triple-1 and 2 would result in "bidou".

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References

  1. 1 2 3 Simpson, George Gaylord (1934). Attending Marvels: A Patagonian Journal . The MacMillan Company.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Botermans, Jack (2008). The Book of Games: strategy, tactics & history . Translated by Fankbonner, Edgar Loy. New York: Sterling Publishing Co., Inc. p. 337. ISBN   978-1-4027-4221-7.
  3. ↑ Redden, Earl (November 1937). "Plot Redden Sends News From South America". The Air Line Pilot. Vol. 6, no. 11. p. 2. Retrieved 16 January 2025.
  4. ↑ Bruce, James (1953). Those Perplexing Argentines. Longmans, Green and Co. pp. 27, 45. LCCN   53-10840.
  5. ↑ Crow, Carl (September 1941). "The Checkerboard City of Lima". Travel. Vol. 55, no. 5. pp. 22–26, 38. Retrieved 16 January 2025.
  6. ↑ Perret, Geoffrey (2001). Jack: A Life Like No Other . Random House. ISBN   0-375-50363-3.
  7. 1 2 3 4 5 6 7 8 9 10 11 12 Frey, Skip (1978). Complete book of dice games . Sphere Books Ltd. pp. 55–58. ISBN   0-7221-3681-1.
  8. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Family Fun & Games . Sterling Publishing Co., Inc. 1992. pp. 110–113. ISBN   0-8069-8776-6.
  9. 1 2 3 4 Welch, Scotty; Welch, Ronnie (1965). Esquire Party Book . Illustrated and designed by Seymour Chwast. New York: Esquire, Inc. pp. 303–306. LCCN   65-15415.
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