Blackjack (21)

TODO

• Create game loop
  • Persist state across rounds
  • Collection and re-shuffling of cards
• Use State monad to improve and clean up hand and deck manipulation code
• Allow hand splitting
• Betting functionality
  • Bank
  • Allow player to purchase insurance against the dealer's hand
  • Allow player to forfeit/surrender a hand
  • Blackjack hand bonus
• Improve visual presentation

Rules

Game Deck

• This game uses standard 52 card decks
• A gameplay deck can be comprised of multiple 52 card decks

Card Evalutation

• Ace cards are valued as 1 or 11
• 2 - 10 cards are valued by their rank (i.e. 2 is valued 2)
• Jack, Queen & King cards are valued as 10

Hand Evalutation

• Any hand with an Ace valued as 11 is called a soft hand
• All other hands are hard hands
• The total value of a hand is the sum of the values of the cards in the hand
• A hand with a total value greater than 21 is a bust
• If a soft hand is bust, then the Ace valued at 11 is revalued at 1
• A hand is always evaluated as soft when possible (i.e. Ace & 6 is soft 17 not hard 7 )

Dealer's Gameplay

• Dealer hits on all hands totaling less than 17 and on soft hands totalling 17