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#

bash

# 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#

json

{
  "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.