What is Duel Blackjack?
Duel Blackjack is a provably fair blackjack game offering 99.5% Return to Player (RTP) with 6-deck shoe, 3:2 blackjack payouts, and classic Vegas rules. It's one of the highest RTP blackjack games available online.
Vegas Rules
Dealer stands on soft 17
6-Deck Shoe
Standard casino shoe
Resplit up to 3x
Optimal splitting rules
Provably Fair
Every hand can be verified
Blackjack Demo Table
Dealer's Hand
Showing: 10 + ?
Your Hand
Total: 19 or 9 (Soft 19)
Try different moves to see optimal strategy in action
🎯 Blackjack Rules Explained:
Basic Rules: Get closer to 21 than the dealer without going over. Blackjack (Ace + 10-value card) pays 3:2.
- Dealer Rules: Must hit on 16 or less, stand on 17 or more
- Blackjack Payout: 3:2 (bet $10, win $15)
- Splitting: Any pair can be split, resplit up to 3 hands
- Doubling: Double on any first two cards
- Insurance: Offered when dealer shows Ace (not recommended)
House Edge: Only 0.5% with perfect basic strategy, making it one of the best casino games.
How to Play Duel Blackjack
Place Your Bet
Choose your bet size (minimum $0.10, no maximum for VIP players)
Receive Cards
You get two cards face up, dealer gets one face up and one face down
Make Decisions
Choose to Hit, Stand, Double, Split, or take Insurance
Dealer Reveals
Dealer reveals hidden card and plays according to house rules
Settle Bets
Compare hands - closest to 21 without busting wins
🎯 Pro Tip:
Always use the Basic Strategy chart for optimal play. Memorize it or keep it open while playing. This reduces house edge from ~2% to just 0.5%.
Duel Blackjack Strategies
🎯 Recommended Strategies
Basic Strategy
EasyPerfect mathematical play based on your hand and dealer's up card.
- Always hit on 11 or less
- Always stand on 17 or more
- Double 11 vs dealer 2-10
- Split Aces and 8s
- Reduces house edge to 0.5%
- Easy to memorize
- Works in all situations
- Doesn't guarantee wins
- Short-term variance
Card Counting (Hi-Lo)
MediumTrack high vs low cards to know when the deck is favorable.
- +1: 2, 3, 4, 5, 6
- 0: 7, 8, 9
- -1: 10, J, Q, K, A
- Can gain 1-2% edge
- Works well with 6 decks
- Legal skill to use
- Requires practice
- Casinos may restrict
- Large bankroll needed
Betting Systems
EasyManage bet sizes based on wins/loses or card count.
- Flat Betting (recommended)
- 1-3-2-6 System
- Kelly Criterion
- Manage risk effectively
- Maximize winning streaks
- Limit losing streaks
- Don't change odds
- Can accelerate losses
⚠️ Strategy Warning:
No betting system can overcome the house edge in the long run. Card counting gives you an edge but requires perfect play and large bankroll. Always stick to basic strategy as your foundation.
Basic Strategy Chart
Complete basic strategy for 6-deck blackjack, dealer stands on soft 17. Follow this chart for optimal play.
Hard Totals (No Ace)
| Your Hand | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 8 or less | Hit | |||||||||
| 9 | Hit | Double | Double | Double | Double | Hit | Hit | Hit | Hit | Hit |
| 10 | Double | Double | Double | Double | Double | Double | Double | Double | Hit | Hit |
| 11 | Double | Double | Double | Double | Double | Double | Double | Double | Double | Hit |
| 12 | Hit | Hit | Stand | Stand | Stand | Hit | Hit | Hit | Hit | Hit |
| 13-16 | Stand | Stand | Stand | Stand | Stand | Hit | Hit | Hit | Hit | Hit |
| 17-21 | Stand | |||||||||
Soft Totals (With Ace)
| Your Hand | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| A,2-A,6 | Hit | Hit | Double | Double | Double | Hit | Hit | Hit | Hit | Hit |
| A,7 | Stand | Double | Double | Double | Double | Stand | Stand | Hit | Hit | Hit |
| A,8-A,9 | Stand | |||||||||
| A,10 | Blackjack - Stand | |||||||||
Pairs
| Your Pair | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| A,A | Split | Split | Split | Split | Split | Split | Split | Split | Split | Split |
| 2,2 | Split | Split | Split | Split | Split | Split | Hit | Hit | Hit | Hit |
| 3,3 | Split | Split | Split | Split | Split | Split | Hit | Hit | Hit | Hit |
| 4,4 | Hit | Hit | Hit | Split | Split | Hit | Hit | Hit | Hit | Hit |
| 5,5 | Double | Double | Double | Double | Double | Double | Double | Double | Hit | Hit |
| 6,6 | Split | Split | Split | Split | Split | Hit | Hit | Hit | Hit | Hit |
| 7,7 | Split | Split | Split | Split | Split | Split | Hit | Hit | Hit | Hit |
| 8,8 | Split | Split | Split | Split | Split | Split | Split | Split | Split | Split |
| 9,9 | Split | Split | Split | Split | Split | Stand | Split | Split | Stand | Stand |
| 10,10 | Stand | |||||||||
Card Counting Guide
📊 Hi-Lo Card Counting System
Card Values
Running Count
🎯 True Count Calculation:
True Count = Running Count ÷ Remaining Decks
Example: Running Count = +12, 3 decks remaining → True Count = +4
| True Count | Player Advantage | Bet Multiplier | Strategy Adjustments |
|---|---|---|---|
| ≤ 0 | -0.5% to 0% | 1x (Min Bet) | Basic strategy only |
| +1 to +2 | 0% to +0.5% | 1-2x | Basic strategy |
| +3 to +5 | +0.5% to +1.5% | 2-4x | Insurance at +3 |
| +6 to +9 | +1.5% to +2.5% | 4-8x | Stand 16 vs 10, 15 vs 9 |
| ≥ +10 | > +2.5% | 8-12x | Maximum bet, all adjustments |
Blackjack Calculator
Calculate your expected value, optimal bet size, and house edge based on different scenarios.
💰 Kelly Criterion Calculator
Calculate optimal bet size using the Kelly Criterion formula:
f* = (bp - q) / b
Where:
f* = fraction of bankroll to bet
b = net odds received (1 for even money)
p = probability of winning
q = probability of losing (1 - p)
Duel Blackjack FAQ
99.5% RTP is achieved through favorable rules: 3:2 blackjack payout, dealer stands on soft 17, doubling allowed on any two cards, resplitting up to 3 hands, and late surrender option. With perfect basic strategy, the house edge is only 0.5%.
Yes! Duel Blackjack uses a 6-deck shoe that's reshuffled after approximately 75% penetration. This provides enough cards for effective card counting. The Hi-Lo system can give players up to 2% edge when the count is high.
A 1-8 or 1-10 spread is optimal. Bet minimum at true count ≤ 0, 2x at +1, 4x at +2, 6x at +3, and maximum (8-10x) at true count ≥ +4. This maximizes profits while minimizing detection risk.
Only take insurance when counting cards and the true count is +3 or higher. Otherwise, insurance has a -7.7% house edge. Basic strategy players should never take insurance.
Absolutely! Using a basic strategy chart is encouraged and completely legal. Keep our chart open in another tab or print it out. After playing 1000+ hands, you'll have it memorized naturally.
For casual play: 20x your average bet ($200 for $10 bets). For serious counting: 100-200x your base bet ($1000-$2000 for $10 bets). This ensures you can withstand normal variance without going broke.
Ready to Beat the Dealer?
Apply your blackjack strategy with real 99.5% RTP provably fair gameplay.