Why Does Removing the Tens Change the Game?
A standard Spanish 21 shoe contains six or eight decks, but every single natural 10 card is stripped out before play begins. The Jacks, Queens, and Kings stay in the deck and still count as 10. This leaves 48 cards per deck. In standard blackjack, tens are the player's best friend. They make double downs successful, turn aces into strong hands, and cause the dealer to bust when they show a weak upcard. Removing them raises the house edge by about 2 percent if no other rules change.
- Fewer dealer busts: With no tens in the deck, the dealer is much more likely to make a hand when starting with a weak upcard like a 4, 5, or 6.
- Weaker double downs: Your double downs on 10 or 11 will result in a total of 20 or 21 much less frequently.
- More low cards: The shoe has a higher concentration of cards valued 2 through 9, which completely changes draw probabilities.