Bankroll Over Time
Win Rate by Game
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Mines Probability Table (5x5 Grid)
Best odds for conservative play. Zero edge means fair multipliers.
| Mines (M) | Reveals (K) | Win Probability | Fair Multiplier | Profit on $3 | Strategy Note |
|---|
What to Look For:
- If your average K > 4, win rate drops significantly - cap at K=3-4
- M=3, K=3 offers best balance: 71.4% win probability
- Track losing streaks > 2 games - consider pausing
- High multipliers (>3x) come with low probability - use sparingly
Interactive Calculator
71.4%
1.40x
Conservative
Blackjack Basic Strategy Chart
Optimized for Duel.com rules: S17 (dealer stands on soft 17), infinite decks, no DAS (double after split)
Key Rules for Duel.com:
- Always decline insurance - it's negative EV even against dealer Ace
- Expected win rate: ~45% of hands with perfect basic strategy
- Zero edge: Over time, EV = 0 with optimal play
- Short sessions: Variance can work in your favor - aim for +$5 then stop
- Infinite decks: Card counting doesn't work - focus on Basic Strategy
📊 How to Read These Charts:
Find YOUR hand total in the left column, then look across to the column matching the DEALER'S upcard. The cell shows the optimal play.
Example: You have Hard 15, dealer shows 6 → Find "13-16" row, look at "6" column → S = Stand
Hard Totals
| Your Hand | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 8 or less | H | H | H | H | H | H | H | H | H | H |
| 9 | H | D | D | D | D | H | H | H | H | H |
| 10 | D | D | D | D | D | D | D | D | H | H |
| 11 | D | D | D | D | D | D | D | D | D | H |
| 12 | H | H | S | S | S | H | H | H | H | H |
| 13-16 | S | S | S | S | S | H | H | H | H | H |
| 17+ | S | S | S | S | S | S | S | S | S | S |
Soft Totals
| Your Hand | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| A,2 or A,3 | H | H | H | D | D | H | H | H | H | H |
| A,4 or A,5 | H | H | D | D | D | H | H | H | H | H |
| A,6 | H | D | D | D | D | H | H | H | H | H |
| A,7 | S | D | D | D | D | S | S | H | H | H |
| A,8 or A,9 | S | S | S | S | S | S | S | S | S | S |
Pairs (Splitting Strategy)
| Your Pair | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| A,A | Sp | Sp | Sp | Sp | Sp | Sp | Sp | Sp | Sp | Sp |
| 10,10 | S | S | S | S | S | S | S | S | S | S |
| 9,9 | Sp | Sp | Sp | Sp | Sp | S | Sp | Sp | S | S |
| 8,8 | Sp | Sp | Sp | Sp | Sp | Sp | Sp | Sp | Sp | Sp |
| 7,7 | Sp | Sp | Sp | Sp | Sp | Sp | H | H | H | H |
| 6,6 | Sp | Sp | Sp | Sp | Sp | H | H | H | H | H |
| 5,5 | D | D | D | D | D | D | D | D | H | H |
| 4,4 | H | H | H | Sp | Sp | H | H | H | H | H |
| 3,3 | Sp | Sp | Sp | Sp | Sp | Sp | H | H | H | H |
| 2,2 | Sp | Sp | Sp | Sp | Sp | Sp | H | H | H | H |
Legend:
- H = Hit
- S = Stand
- D = Double (if not allowed, Hit)
- Sp = Split
🎯 Critical Strategy Points (Based on Dealer Upcard):
Dealer Weak (2-6) - "Bust Cards"
- Dealer 2-3: Stand on 13+, they'll likely bust
- Dealer 4-6: Stand on 12+, highest bust probability
- Double more: Dealer weak = aggressive doubling (9-11, soft hands)
- Never hit stiff hands (12-16): Let dealer bust themselves
Dealer Strong (7-A) - "Pat Cards"
- Dealer 7-A: Hit until you reach 17+ (they likely have 17+)
- Dealer 10: Assume they have 20 - hit aggressively
- Dealer Ace: Most dangerous - decline insurance, hit to 17+
- Don't stand on 12-16: You'll lose to their likely pat hand
🔍 What to Look For in Your Play:
Common Mistakes to Avoid:
- Hitting 12-16 vs dealer 2-6: Should stand - let dealer bust
- Standing on 12-16 vs dealer 7-A: Should hit - dealer likely has 17+
- Not doubling on 11: Always double vs 2-10 (hit vs Ace)
- Splitting 10s: Never split - you already have 20!
- Not splitting 8s or Aces: Always split these
- Taking insurance: Always decline - negative EV
Track These Metrics:
- BS Adherence: Aim for 90%+ - check "Followed BS" when logging
- Win rate vs dealer upcard: Should win more vs 4-6
- Double success rate: Doubles should win ~55% vs weak dealer
- Bust rate on hits: If >30%, you're hitting too much on stiffs
- Overall win rate: Should be 43-47% with perfect BS
⚠️ Duel.com Specific Reminders:
- Infinite deck: Card counting is useless - stick to Basic Strategy
- No DAS (Double After Split): Be more conservative with pair splits
- S17 (Stand on soft 17): Slightly better for player than H17
- Zero edge with perfect play: Your mistakes = house advantage
- Variance is your friend: Short sessions (10-20 hands) can beat EV=0
Your Performance Analysis
Log some games to see personalized insights!
💡 General Bankroll & Session Tips
Optimal Bet Sizing
- Starting bankroll $35: Bet $2-$3 (5-10%)
- Bankroll $50+: Can increase to $3-$5
- Bankroll <$25: Drop to $1-$2 or stop
- Never bet >10%: High variance = quick bust
- Consistency matters: Stick to same bet size per session
Session Management
- Win goal: Stop at +$5 to +$10 profit
- Loss limit: Stop at -$7 to -$10 loss
- Time limit: 20-30 minutes max per session
- Game limit: 15-25 games then reassess
- Break after streaks: 3+ losses = 5 min break
🎲 Understanding Zero Edge (EV=0)
What It Means
On Duel.com, the house has NO mathematical advantage. Over infinite plays, you'd break even. This is RARE - most casinos have 1-5% edge.
How to Exploit It
Short sessions leverage variance. You can win +$5-$10 before variance swings back. Long sessions → regression to EV=0 (break even).
The Catch
Discipline is everything. Chasing losses, over-betting, or ignoring strategy creates YOUR OWN house edge against yourself.
📊 Expected Outcomes (with optimal play):
Win: 40-60%
Variance: High
Win: 45-55%
Variance: Medium
Win: 47-53%
Variance: Low
Win: ~50%
Variance: Minimal
Takeaway: Shorter sessions = higher chance to profit from variance. Longer sessions = closer to break-even.
🧠 Psychology & Discipline
Avoid These Behaviors:
- Chasing losses: Doubling bets after losses
- Overconfidence: Increasing bets after wins
- Tilt playing: Emotional decisions after bad beats
- Ignoring limits: Playing past stop-loss point
- "One more game": Breaking your win goal
Winning Mindset:
- Pre-set limits: Decide win/loss limits BEFORE playing
- Celebrate small wins: +$5 is a successful session
- Accept variance: Losing streaks happen even with perfect play
- Track everything: Data reveals patterns you can't see in-game
- Take breaks: Fresh mind = better decisions
✅ Ideal Session Checklist:
- Set win goal (+$5) and loss limit (-$7) BEFORE starting
- Choose game: Mines (M=3, K=3-4) or Blackjack with BS chart open
- Bet consistently: $2-$3 per game
- Log each game immediately in this tracker
- Check dashboard after every 5 games - are you on track?
- Stop when you hit win goal OR loss limit (whichever first)
- Review "Your Stats" tab to learn from the session
- Wait 1+ hours before next session (avoid tilt)
Export Data
Download your session data as CSV for analysis in Excel or other tools.
Session Management
Reset your session to start fresh with a new bankroll.
How to Use This Tracker
Getting Started
- Start with the default $35 bankroll
- Play games on Duel.com
- Log each game immediately after playing
- Review your stats on the Dashboard
- Check Insights for optimal strategies
Best Practices
- Bet 5-10% of bankroll ($2-$3 at $35)
- Stop after +$5 profit or -$7 loss
- Follow Basic Strategy for Blackjack
- Use M=3, K=3-4 for Mines
- Take breaks after 3 losses in a row