The Four Horsemen of Blackjack

The Four Horsemen of Blackjack are quite possibly the most important people in the entire history of the game of blackjack. Whether you are a regular of USA online blackjack, like to play a few hands whenever you’re in Vegas or play at home with your buddies, if you have ever used Basic Strategy when you’ve played blackjack, you owe a great debt to The Four Horsemen of the Aberdeen Proving Ground – to use their full and proper title.

Basic Strategy is the mathematically proven optimum strategy for playing blackjack and effectively tells you whether you should hit, stand, double or split in any given situation. Working this complex algorithm out now would be relatively simple with a cheap computer and a decent grounding in math, but back when the Four Horsemen figured it all out, they used just a pencil, some paper and their collective brainpower.

William Cantey, Herbert Maisel, Roger Baldwin and James McDermott were stationed at the Aberdeen Proving Ground in Maryland in the 1950s and decided to see if they could crack the game of blackjack. Upon learning that the dealer had to hit to 16 and stand on 17, Baldwin, who had a Master’s in Math, decided he could try and calculate the best move following the initial deal.

Given there are a fixed number of cards in the deck it seemed right that in any given situation there must be a “right” and a “wrong” call. Previously blackjack players went on received wisdom and hunches but these four bright army men decided they would attempt to work out what choices would yield the best results in the long term.

From 1953 onwards the four soldiers worked on their theory, testing and analyzing, using nothing more than army “adding machines”, as primitive calculators were then known. In fall 1956 they published “The Optimum Strategy in Blackjack” which essentially codified, created, invented, call it what you will, Basic Strategy.

Their original document is almost perfect, with some very minor alterations having been made over the years that produce returns a tiny fraction higher. Amazingly it wasn’t until 2008 that they were inducted into the Blackjack Hall of Fame but since then their amazing feat has been more widely and fully appreciated.

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