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4-Deck to 8-Deck Blackjack Strategy

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Introduction

To use the basic strategy, look up your hand along the left vertical edge and the dealer's up card along the top. In both cases an A stands for ace. From top to bottom are the hard totals, soft totals, and splittable hands. There are two charts depending on whether the dealer hits or stands on soft 17.

    

Other basic strategy rules.

  • Never take insurance or "even money."
  • If there is no row for splitting (fives and tens), then look up your hand as a hard total (10 or 20).
  • If you can't split because of a limit on re-splitting, then look up your hand as a hard total, except aces. In the extremely unlikely event you have a pair of aces you can't re-split and drawing to split aces is allowed, then double against a 6, otherwise hit.

If you play a mixture of six-deck games, some where the dealer hits a soft 17, and some where he stands, and you only wish to memorize one strategy, I would recommend you memorize the one where the dealer stands on soft 17. The cost in errors due to playing the wrong strategy is 2.3 times higher playing a stand on soft 17 game, with the hit on 17 strategy, than vise versa.

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A list of blackjack games found online by major software providers of Internet casinos with the house edge of each.

House Edge Game review Play Decks Soft 17 Double After Split Peek Surrender
0% Concept Gaming(Jackpot Blackjack) Super Slots 6 Stand No No Yes
0.01% Concept Gaming(7 Handed European Blackjack) Super Slots 6 Stand No No No
0.11% Ezugi(Blackjack) Casino Adrenaline 8 Stand Yes Yes Yes
0.14% Playtech(Blackjack Switch) EmuCasino 6 Hit Yes No No
0.15% Espresso Games(Single Deck Blackjack) BikiniSlots Casino 1 Stand No Yes No

Basic Strategy in Text

For the benefit of my blind readers, here is the above strategy in text form, when the dealer stands on soft 17 and surrender is allowed. To use the strategy, start at the top, and follow the first rule that applies.

Surrender

  • Surrender hard 16 (but not a pair of 8s) vs. dealer 9, 10, or A, and hard 15 vs. dealer 10.

Split

  • Always split aces and 8s.
  • Never split 5s and 10s.
  • Split 2s and 3s against a dealer 4-7, and against a 2 or 3 if DAS is allowed.
  • Split 4s only if DAS is allowed and the dealer shows a 5 or 6.
  • Split 6s against a dealer 3-6, and against a 2 if DAS is allowed.
  • Split 7s against a dealer 2-7.
  • Split 9s against a dealer 2-6 or 8-9.

House Edge Game review Play Decks Soft 17 Double After Split Peek Surrender
0% Concept Gaming(Jackpot Blackjack) Super Slots 6 Stand No No Yes
0.01% Concept Gaming(7 Handed European Blackjack) Super Slots 6 Stand No No No
0.11% Ezugi(Blackjack) Casino Adrenaline 8 Stand Yes Yes Yes
0.35% Ezugi(Unlimited) Casino Adrenaline 8 Stand Yes No No
0.40% Concept Gaming(Single Hand) Super Slots 3 Stand No Yes Yes
0.43% BetConstruct(Blackjack) BoGamba Casino 1 Stand Yes Yes Yes
0.45% Evolution Gaming(Infinite Blackjack (with six-card Charlie)) EmuCasino 8 Stand No Yes No
0.46% Spearhead Studios(Blackjack) Jackbit Casino 6 Stand Yes Yes No
0.49% LuckyStreak(Blackjack) SirWin Casino 8 Stand Yes Yes No
0.49% Concept Gaming(Ultimate American 5 Handed Blackjack) Super Slots 6 Stand No Yes Yes
0.49% Concept Gaming(7 Handed American Blackjack) Super Slots 6 Stand No Yes Yes
0.49% Concept Gaming(5 Hand Vegas) Super Slots 6 Stand Yes Yes Yes
0.50% Playtech(Unlimited Blackjack (Live Dealer)) EmuCasino 8 Stand Yes No No
0.50% Vivo Gaming(Blackjack) Casinobit.io 8 Stand Yes Yes No
0.51% Concept Gaming(Ultimate Blackjack II) Super Slots 6 Stand No Yes Yes
0.54% Xprogaming(Blackjack) SirWin Casino 6 Hit Yes No No
0.59% Net Entertainment(Common Draw Blackjack (Live Dealer)) EmuCasino 6 Stand Yes No No
0.59% Net Entertainment(Live Beyond Live Blackjack) EmuCasino 6 Stand Yes No No
0.62% Asia Gaming(Blackjack) BoGamba Casino 8 Stand No Yes No
0.62% Fresh Deck Studios(Blackjack) Reel Fortune Casino 8 Stand No Yes No
0.69% Visionary iGaming(Blackjack) Casino Extreme 6 Hit Yes Yes No
0.69% Visionary iGaming(Early Payout) Casino Extreme 1 Hit Yes Yes No
0.69% Concept Gaming(Multi Hand) Super Slots 6 Stand No No No
0.72% Evolution Gaming(Live Dealer Blackjack) EmuCasino 8 Stand No No No

Double

  • Double hard 9 vs. dealer 3-6.
  • Double hard 10 except against a dealer 10 or A.
  • Double hard 11 except against a dealer A.
  • Double soft 13 or 14 vs. dealer 5-6.
  • Double soft 15 or 16 vs. dealer 4-6.
  • Double soft 17 or 18 vs. dealer 3-6.

Hit or Stand

  • Always hit hard 11 or less.
  • Stand on hard 12 against a dealer 4-6, otherwise hit.
  • Stand on hard 13-16 against a dealer 2-6, otherwise hit.
  • Always stand on hard 17 or more.
  • Always hit soft 17 or less.
  • Stand on soft 18 except hit against a dealer 9, 10, or A.
  • Always stand on soft 19 or more.

As I've said many times, the above strategy will be fine under any set of rules. However, for you perfectionists out there, here are the modifications to make if the dealer hits a soft 17.

  • Surrender 15, a pair of 8s, and 17 vs. dealer A.
  • Double 11 vs. dealer A.
  • Double soft 18 vs. dealer 2.
  • Double soft 19 vs. dealer 6.

My thanks to Kelly for putting together the above text strategy.

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