Blackjack Basic Strategy Advisor

Perfect basic strategy for 6-deck blackjack (dealer stands on soft 17). Covers all hand types: hard, soft, and pairs. Reduces house edge to 0.3% — the lowest achievable without card counting.

Usage

# Single hand (outputs JSON)
python blackjack_advisor.py "8,6" "7"
python blackjack_advisor.py "A,7" "6"
python blackjack_advisor.py "9,9" "6"

# Demo (runs 7 test hands)
python blackjack_advisor.py

Output

{
  "action": "DOUBLE",
  "explain": "Double ta mise et prends UNE seule carte.",
  "hand_type": "soft 18",
  "total": 18,
  "confidence": "optimal"
}

Actions: HIT | STAND | DOUBLE | SPLIT | SURRENDER | BLACKJACK

Strategy covered

• Hard hands (4–21): full matrix vs all dealer upcards 2–A
• Soft hands (A+2 through A+9): double/hit/stand decisions
• Pairs (2–A): split vs no-split vs double

Rules assumed

• 6 decks
• Dealer stands on soft 17 (S17)
• Double after split allowed
• Surrender available (late surrender)

No configuration required

No env vars, no API keys, no dependencies beyond Python stdlib.

Why this matters

Playing slots or guessing costs 4–40x more per dollar wagered than using basic strategy. On a $5,000 wagering requirement: slots cost ~$200, basic strategy costs ~$15.