What to do the blackjack player:
- Doubles are permitted on any two-card hand except a blackjack.
- Doubles are permitted after splitting.
- Early surrender; the ability to forfeit half your wager against a face or ace before the dealer checks for blackjack.
- Normal (aka “late”) surrender.
- Resplitting Aces.
- Drawing more than one card against a split Ace.
- Five or more cards with the total still no more than 21 as an automatic win (a “Charlie”)
What not to do the blackjack player:
- Less than 3:2 payout on blackjacks (6:5 and even 1:1 payouts have become common, especially in single-deck games, in Las Vegas since about 2003)
- Dealer hits on soft seventeen (ace, six)
- Splitting a maximum of once (to two hands)
- Double down restricted to certain totals, such as 9-11 or 10,11
- Aces may not be resplit
- No-Peek (European) blackjack—player loses splits and doubles to a dealer blackjack
- Player losing ties