How to Play Blackjack | Rules & Strategy | Flush
How to Play Blackjack: Rules, Hand Signals and When to Hit
Blackjack is the best-value table game in any casino. With perfect basic strategy, the house edge drops to around 0.5%, the lowest of any game at Flush. Whether you’re sitting at an RNG blackjack table or one of Flush’s 200+ live dealer tables, understanding the rules is your first and most important step. This guide covers card values, every action available, dealer rules, payout structures, and the key decisions that separate winning from losing.
The Objective of Blackjack
Blackjack is not about getting as close to 21 as possible. The objective is to beat the dealer, either by having a higher hand total than the dealer without going over 21, or by the dealer going over 21 (busting) while your hand stays under.
This distinction matters. Players often make the mistake of hitting recklessly to get closer to 21 when the correct play is to stand and let the dealer bust. Understanding dealer rules (covered below) is what makes basic strategy so powerful.
Card Values
| Card | Value |
|---|---|
| 2 through 10 | Face value (2 = 2, 7 = 7, etc.) |
| Jack | 10 |
| Queen | 10 |
| King | 10 |
| Ace | 1 or 11 (whichever is better for your hand) |
Example: Ace + 7 = 18 (Ace counts as 11). If you then draw a 9, your hand becomes 17 (Ace now counts as 1 to avoid busting).
The Flow of a Blackjack Hand
- Place your bet: Select your chip value and click the betting area
- Cards are dealt: You receive 2 cards face-up; dealer receives 1 card face-up, 1 face-down (the “hole card”)
- Evaluate your hand: Check your total against the dealer’s visible upcard
- Take action: Hit, Stand, Double Down, Split, or Surrender
- Dealer reveals hole card: The dealer turns over their face-down card and plays according to fixed rules
- Settlement: Wins are paid, losses are collected
Player Actions Explained
Hit
Take another card from the deck. You can hit multiple times. If your total exceeds 21, you “bust” and immediately lose your bet regardless of what the dealer holds.
Stand
Keep your current hand and end your turn. The dealer then plays out their hand.
Double Down
After receiving your first two cards, you may double your original bet and receive exactly one more card, no more. Doubling is optimal when you have a strong starting total against a weak dealer upcard. Example: hard 11 vs dealer’s 6, double down.
Split
When your first two cards are a matching pair, you may split them into two separate hands, each with its own bet equal to your original. You then play each hand independently. Some rules allow re-splitting if you draw another matching card.
Always split: Aces, 8s Never split: 5s (they total 10, treat as a double-down hand), 10s (20 is an excellent hand, don’t break it up)
Surrender
Available in some blackjack variants. Before taking any action, you may surrender your hand and forfeit exactly half your bet. This is the correct play with hands that have a very high probability of losing (e.g., hard 16 vs dealer 10).
Insurance
When the dealer’s upcard is an Ace, you may take “insurance”, a side bet of up to half your original bet that pays 2:1 if the dealer has blackjack. Do not take insurance. The house edge on the insurance bet exceeds 7% because dealers don’t have blackjack often enough to justify it.
What Is Blackjack (Natural)?
If your first two cards are an Ace plus any 10-value card (10, J, Q, K), you have a “blackjack” or “natural.” This typically pays 3:2, a $10 bet wins $15.
Warning: Avoid 6:5 tables. Some blackjack variants pay 6:5 on blackjack instead of 3:2. This increases the house edge by approximately 1.4%: a huge disadvantage. Always check the payout structure before sitting down. Flush’s blackjack tables use fair payout structures.
Dealer Rules
The dealer follows fixed, mandatory rules, no decisions are made:
- Must hit on any total of 16 or below
- Must stand on any total of 17 or above (hard 17)
- Soft 17 rule varies: Some games require the dealer to hit on soft 17 (Ace + 6 = 17). This slightly increases the house edge vs. a stand-on-soft-17 rule. Check the table info.
Knowing dealer rules is essential for basic strategy. Because the dealer must take risks on weak hands, you can often stand with moderate totals and wait for the dealer to bust.
Hard Hands vs. Soft Hands
A hard hand contains no Ace, or contains an Ace that can only count as 1 (because counting it as 11 would bust). Example: 10+8 = hard 18; Ace+10+9 = hard 20 (Ace = 1).
A soft hand contains an Ace that can still count as 11 without busting. Example: Ace+7 = soft 18. You cannot bust on the next hit of a soft hand (hitting 10 = Ace+7+10 = 18, Ace drops to 1).
Soft hands offer flexibility, you can hit more aggressively without risk of busting.
Key Basic Strategy Decisions
Basic strategy is the mathematically correct play for every hand combination. Here are the most important rules to memorize:
Hard Total Guide
| Your Hand | Dealer Upcard | Action |
|---|---|---|
| 8 or less | Any | Hit |
| 9 | 3-6 | Double Down; else Hit |
| 10 | 2-9 | Double Down; else Hit |
| 11 | 2-10 | Double Down; else Hit |
| 12 | 4-6 | Stand; else Hit |
| 13-16 | 2-6 | Stand; else Hit |
| 17+ | Any | Stand |
Soft Hand Guide
| Your Hand | Dealer Upcard | Action |
|---|---|---|
| Soft 13-15 | Any | Hit |
| Soft 16-17 | 4-6 | Double Down; else Hit |
| Soft 18 | 3-6 | Double Down; 7-8: Stand; 9-Ace: Hit |
| Soft 19-21 | Any | Stand |
Pair Splitting Guide
| Your Pair | Dealer Upcard | Action |
|---|---|---|
| Aces | Any | Always Split |
| 8s | Any | Always Split |
| 10s | Any | Never Split (stand) |
| 5s | Any | Never Split (double 10) |
| 2s, 3s, 7s | 2-7 | Split; else Hit |
| 6s | 2-6 | Split; else Hit |
| 9s | 2-6, 8-9 | Split; 7, 10, Ace: Stand |
| 4s | 5-6 | Split; else Hit |
RTP and House Edge
With perfect basic strategy, blackjack has a house edge of approximately 0.5%, giving players an RTP of around 99.5%. This makes blackjack the highest-value game in a typical casino when played correctly.
Without strategy, players average around a 2–4% house edge, up to 8x more expensive. Learning basic strategy is the single highest-value action any blackjack player can take.
Variants affect the house edge:
- Number of decks: Single deck blackjack has a lower house edge (~0.3%) vs 6-deck (~0.6%)
- Dealer stands/hits soft 17
- Whether doubling after splitting is allowed
- Surrender availability
Deck Count and Its Effect
Single-deck blackjack offers the best odds but is rare in live casino environments (where multi-deck shoes of 6 or 8 decks are standard). The more decks used, the more it favors the house, but the difference between 6-deck and 8-deck is negligible in practice. What matters more is the rule set (3:2 payout, surrender available, etc.).
RNG Blackjack vs. Live Blackjack at Flush
RNG Blackjack
- Completely computerized, cards dealt by a random number generator
- Faster play, no waiting between hands
- Often lower bet minimums
- No side bet options in many versions
- Good for practice and learning
Live Blackjack at Flush
- Real dealer, real cards, streamed from a professional studio
- Multiple camera angles, real-time chat with dealer
- Side bets available (Perfect Pairs, 21+3, etc.)
- Multiple table variants: Infinite Blackjack (unlimited players share one table), Speed Blackjack (fastest decision wins the next card), Salon Privé (high-limit private tables)
- Social experience, you see other players’ hands at some tables
- Better for an authentic live experience
Flush hosts 200+ live tables, with multiple blackjack variants running around the clock.
Hand Signals in Live Play
In physical casino environments, hand signals are required. In live dealer online blackjack, you use on-screen buttons, but knowing the signals is useful context:
- Hit: Tap the table or point to your cards
- Stand: Wave hand flat, palm down over your cards
- Double Down: Place additional chips beside (not on top of) your bet
- Split: Place additional chips and hold up two fingers
Responsible Blackjack Play
Blackjack is a skill game, but it’s still gambling. Even with perfect strategy, losing streaks happen. Recommended practices:
- Set a session budget before sitting down
- Never deviate from basic strategy because of “gut feeling”, the math is settled
- Avoid side bets, Perfect Pairs and 21+3 carry house edges of 5–8%
- Know when to leave, setting a loss limit of 50% of session budget is a useful rule
- Use Flush’s responsible gaming tools (deposit limits, session limits) in your account settings
Frequently Asked Questions
When should I surrender in blackjack? Surrender is not available at every blackjack table, but when it is, it allows you to forfeit your hand and recover half your bet before the dealer checks for blackjack (early surrender) or after (late surrender). Basic strategy recommends surrendering a hard 16 against a dealer 9, 10, or Ace, and a hard 15 against a dealer 10. Surrendering in these spots reduces your expected loss compared to playing out the hand.
Does blackjack strategy change based on number of decks? The core basic strategy decisions are largely consistent across different deck counts, but there are minor variations. For example, certain double-down decisions change when moving from single-deck to multi-deck play. For 6 or 8-deck games, the most common at online casinos, use a basic strategy chart specifically calibrated for 6-8 decks and the specific table rules (H17 vs S17, DAS, etc.).
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Related Pages at Flush
- Blackjack Strategy Guide
- Blackjack at Flush
- Live Blackjack at Flush
- Lightning Blackjack Review
- What RTP Actually Means
FAQ
What are the basic rules of blackjack?
Blackjack is played between you and the dealer. You and the dealer are each dealt two cards. Your goal is to reach a hand value closer to 21 than the dealer without exceeding 21. Number cards are worth their face value, face cards (Jack, Queen, King) are worth 10, and Ace is worth 1 or 11, whichever benefits your hand. On your turn you choose to Hit (take another card), Stand (keep your current hand), Double (double your bet and take exactly one more card), or Split (if your two cards match, split them into two separate hands). The dealer must hit until reaching 17 or above.
What is the objective of blackjack?
The objective of blackjack is to beat the dealer’s hand without going over 21. You win if your hand is higher than the dealer’s without busting, if the dealer busts (exceeds 21) regardless of your hand value, or if you are dealt a natural blackjack (an Ace plus a 10-value card). You lose if you bust, or if the dealer’s hand is higher than yours. A tie (push) returns your bet. At Flush, all blackjack variants including live Evolution tables follow these core rules.
What does natural blackjack pay, and why does the 3:2 vs 6:5 difference matter?
A natural blackjack is an Ace and any 10-value card dealt on the initial two cards. At standard blackjack tables at Flush, a natural pays 3:2, meaning a $10 bet wins $15. Some variant tables use 6:5 payout rules, meaning the same $10 bet wins only $12. The difference is significant: on a 3:2 table, the house edge from this rule alone is about 0.5 percentage points lower than on a 6:5 table. Over a long session, this difference compounds meaningfully. Always check which payout rule applies before sitting at a Flush blackjack table.
What is basic strategy in blackjack?
Basic strategy is the mathematically optimal set of decisions for every possible hand combination in blackjack. It is not a system or a pattern, it is a complete decision table derived from probability calculations covering all 340 possible player hand and dealer upcard combinations. Following basic strategy at Flush reduces the house edge to approximately 0.5%, making blackjack one of the lowest house-edge games available. Basic strategy charts are freely available and legal to reference while playing at online casinos including Flush.
How do I play blackjack with BTC at Flush?
To play blackjack with BTC at Flush, deposit BTC from your wallet to your Flush account (typically confirms in ten to thirty minutes), then navigate to the Blackjack section and select any table. Standard RNG blackjack tables at Flush start from very small minimum bets. Live Evolution blackjack tables are also available with a range of minimum bets from $1 upward. All winnings are credited directly to your Flush BTC balance and withdrawable to your wallet at any time without KYC verification. For responsible gambling support, visit GamCare.