The entire set of optimal plays for any given hand as determined by computer simulation. Varies slightly under different rule conditions and different numbers of decks. Must be memorized before advancing to card counting.

The optimal playing strategy for blackjack. The easiest way to find out if someone knows “basic” is to ask them what to do with a soft 18. If they every tell you anything that is not on the chart or use words like “sometimes”, “usually”, or “depends” you know they are a fraud.

A collection of actions that will offer the best odds off the top of the deck. These actions vary when different rules are applied to the game.