  Snackjack is a highly simplified version of blackjack that was proposed by
Ethier (2010) and given its name by Epstein (2013). The eight-card deck
comprises two aces, two deuces, and four treys, with aces having value either 1
or 4, and deuces and treys having values 2 and 3, respectively. The target
total is 7 (vs. 21 in blackjack), and ace-trey is a natural. The dealer stands
on 6 and 7, including soft totals, and otherwise hits. The player can stand,
hit, double, or split, but split pairs receive only one card per paircard (like
split aces in blackjack), and there is no insurance.
  We analyze the game, both single and multiple deck, deriving basic strategy
and one-parameter card-counting systems. Unlike in blackjack, these derivations
can be done by hand, though it may nevertheless be easier and more reliable to
use a computer. More importantly, the simplicity of snackjack allows us to do
computations that would be prohibitively time-consuming at blackjack. We can
thereby enhance our understanding of blackjack by thoroughly exploring
snackjack.
