2012-10-15

Arduino LCD: Acey Deucey

There's something satisfying the challenge of fitting games into the limits of a 16x2 character display. This week I did a version of a card game called Acey-Deucey. The basic rules of the game are: first the player antes into the pot. Then two cards are dealt. The player may then bet on whether or not a third card will be between the first two cards. All you need to do is outlast an Arduino-AI opponent.

Code: http://eturnerx.com/files/arduino/005_acey_deucey_eturnerx_arduino_lcd.html

I did make some small changes to the game as it is played live:

  1. Ace is always higher than King and never lower than 2
  2. Pairs do not result in an automatic penalty
  3. The ante increases every few turns

A player can pass by betting "0". A player's maximum bet is limited by the size of their stack and the amount still left in the pot. The AI will bet only when the spread (distance between the two cards) is seven or greater. The AI bets more with wider spreads but will bet only up to half its stack. This is not a bad default strategy.

Since this game is mathematically solveable for optimal long-term play I intentionally made the Arduino-AI a little stupid; the AI does not count cards. There is a single standard 52 deck (4 suits, 13 ranks) being tracked and you are told when the deck is reshuffled.

You can gain a big advantage by simple card counting. Counting 234|QKA versus 6789T should do better than chance. You gain even more of an edge by tracking ALL cards and counting the ratio of good vs bad cards; Just how poker players count "outs". If you're really nerdy you might even try Kelly betting. Hey, whatever you find fun :)

Checkout the other games I have converted