Discount Gambling

High Card Flush

Posted in +EV, collusion by stephenhow on April 22, 2013

GGsite_HCF_ProdBanner_041713A couple of readers have asked about Galaxy Gaming’s new High Card Flush game, which has a few placements now, and may be picking up some steam. The game is pretty simple, where each player and the dealer receive 7 cards. Each hand is measured by its highest flush, where a flush is first ranked by its length (number of cards of same suit), then by its card values. Each player must Ante before the hand, then wagers a 1x-3x Play bet (depending on flush size), or folds. The dealer qualifies with a three-card, 9-high flush. If the dealer doesn’t qualify, the Play bets push, and the remaining Antes are paid even-money. If the dealer qualifies, the Ante and Play bets receive even-money action against the dealer hand.

As you would expect, collusion helps in this game. A Monte Carlo analysis shows that with 6 confederates, perfect knowledge of the dealt cards gives each spot at least a +7.3% edge over the house. But practically, you’d be lucky if you could even communicate the suit counts (number of cards of each suit) dealt. If you figure out a non-suspicious way of doing this, then the following simple strategy yields a +3.1% edge over the house:

High Card Flush Advanced Strategy (6 Player Hands Seen)
Flush Size Play Bet
1 or 2 cards 1x for suit counts (9, 11, 11, 11) or (10, 10, 11, 11), else
fold others
3 card, Jack-high or lower 1x for suit counts (9, 11, 11, 11) or (10, 10, 11, 11), else
fold others
3 card, Queen-high 1x if lowest suit count is 9 or higher,
else fold.
3 card, King-high or better 1x if lowest suit count is 8 or higher, else fold.
4 cards 1x
5 cards 2x
6 or 7 cards 3x

where the suit counts 4-tuple is the sorted number of cards of each suit.

4 Responses

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  1. Hunterhill said, on April 22, 2013 at 12:27 pm

    Wow that was fast work Steven! Thanks

    • Agatha said, on April 23, 2013 at 5:46 pm

      what if only 3 player hands seen, i.e., your two next neighbors?

      • stephenhow said, on April 29, 2013 at 7:42 am

        You need a full table (6 players) colluding to have a +EV edge in this game. Even with 5 confederates, you’ll still be -EV.

  2. mike said, on February 5, 2014 at 9:27 am

    Anyone know of any SoCal casinos with this game? Played it in vegas and love it!

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