Another technique related to shuffle tracking is called ace sequencing. Ace sequencing tries to predict when an ace is about to be dealt. If a player knows they will be dealt an ace as their first card, they gain a 50.43% advantage. A player has roughly a 31% (depending on number of decks) chance of getting a blackjack and a good chance of making a strong hand even if they are not dealt a blackjack. First, the player should know what segments the discards are likely to appear relatively intact after a shuffle. They then observe aces as they are placed into the discard tray within a segment. Then they remember the two or three cards placed on top of the ace in the tray. These are called key cards. After the shuffle, the player looks for the key cards. The ace is likely to follow these cards, and the player can raise their bet in anticipation of getting the ace.
