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Blackjack Rules & Variations Cheat Sheet

By the Blackjack 3000 team - Updated March 2026

Table rules change your edge faster than any strategy tweak. Use this guide to choose the best game before you sit down.

3:2 vs 6:5 H17 vs S17

Why Rules Matter

Blackjack is not one game. Each rule adjustment changes the house edge by a measurable amount. Two tables in the same casino can differ by over 1.5% in edge simply due to payouts and dealer rules.

Before you worry about counting, choose the best rules. It is the highest EV decision you make all night.

Rule Impact Table (Approximate)

These values are typical changes to house edge for a standard 6-deck game:

Rule ChangeImpact on House Edge
Blackjack pays 6:5 instead of 3:2+1.4%
Dealer hits soft 17 (H17)+0.2%
Late surrender allowed-0.07%
Double after split allowed (DAS)-0.1%
Resplit aces allowed-0.05%
Double on any two cards-0.2%
No hole card (ENHC)+0.1% to +0.2%

Rule impacts stack. A 6:5, H17 game with no DAS can be over 2% worse than a clean 3:2, S17 table.

How to Compare Two Tables

  1. Check the payout first. If it is 6:5, walk away.
  2. Look for S17 and DAS signs. These are the next biggest edges.
  3. Confirm resplitting rules and surrender availability.
  4. Estimate penetration. A deep cut card matters more than small rule tweaks.

Special Variations to Watch

  • European no hole card (ENHC): doubles and splits can be lost when the dealer has blackjack. This adds risk.
  • Continuous shuffling machines (CSM): eliminate counting value entirely.
  • Side bets: almost always negative EV. Avoid unless you are tracking the side bet specifically.

Penetration and Shuffle Depth

Penetration controls how often high counts appear. A 6-deck shoe with 75% penetration is far better than a 6-deck shoe cut at 60%.

When in doubt, choose the table with the deeper cut card even if a minor rule is worse. The extra high-count hands usually outweigh tiny rule changes.

Quick Selection Rubric

  • Pick 3:2 payout first.
  • Favor S17 and DAS.
  • Choose deeper penetration.
  • Avoid CSMs if you count.

Frequently Asked Questions

Which blackjack rule change costs the most?

6:5 payout is by far the worst. It adds about 1.4% to the house edge.

Is 6:5 ever worth playing?

Only for casual entertainment. It is not beatable with standard counting approaches.

How much does surrender help?

Late surrender reduces the house edge by about 0.07%. It is valuable in close games.

How important is penetration?

Penetration is critical for counting. Deeper penetration means more high-count hands.