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Last Updated: May 15, 2018

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Swiss Casinos Jack

Introduction

I noticed a side bet in blackjack called the Swiss Casinos Jack at the Zurich casino in Switzerland. It wins on a player blackjack, and the amount of the win depends on the type of blackjack.

Rules

Wins are based on the player's initial two cards, as follow:

  • Jack is Black (blackjack including a black jack) pays 50 to 1.
  • All Red (blackjack consisting of two red cards) pays 25 to 1.
  • Mix* (All other blackjacks) pays 10 to 1.

*: I know, terrible name. I wouldn't call all other blackjacks a "mix," because some are all black, but nobody asked my advice about the terminology in their pay table. Maybe in the original German it isn't such a misnomer.

Analysis

The following table shows my analysis for six decks. The lower right cell shows a house edge of 6.21%.

Swiss Casinos Jack — Six Decks

Event Pays Combinations Probability Return
Jack is Black 50 288 0.005936 0.296809
All red 25 576 0.011872 0.296809
Mix 10 1,440 0.029681 0.296809
All other -1 46,212 0.952511 -0.952511
Total 48,516 1.000000 -0.062083


Following is the house edge for other numbers of decks.

  • One deck: 4.68%
  • Two decks: 5.60%
  • Four decks: 6.06%
  • Six decks: 6.21%
  • Eight decks: 6.28%

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