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Blackjack Index field guide

American, European, Spanish 21 and Blackjack Switch Compared

Deal procedures, deck composition and settlement rules create different decisions and different models across these four games.

Four blackjack rule families represented by distinct card and chip arrangements.

A game name is only the starting point

American Blackjack, European Blackjack, Spanish 21 and Blackjack Switch all use blackjack-style totals and dealer comparison, yet a name does not fully specify the game. The posted rules determine the deck, dealer procedure, blackjack payout, doubling and splitting permissions, surrender policy, and the way special totals settle.

This is why a strategy chart or house-edge figure must match the table in front of it. A chart made for a dealer who checks a hole card can be wrong for a no-hole-card procedure. A classic blackjack chart also does not supply the switch decision in Blackjack Switch, and it omits the special payouts and deck composition in Spanish 21.

Portugal’s national online blackjack rules allow operators to set game-specific rules subject to approval and require those rules to be published. Read the table notice or the digital game rules before making a comparison.

Rule changes affect a blackjack model through their combined deal, action and settlement terms.A relative comparison of five rule effects on the player-facing house edge.
Rule changes affect a blackjack model through their combined deal, action and settlement terms.
Rule changes affect a blackjack model through their combined deal, action and settlement terms.
Rule profileRelative effect
3:2 baseline0.4
Dealer hits soft 170.6
No double after split0.8
Eight decks1.0
6:5 blackjack2.4

American Blackjack usually uses a hole card and peek

American Blackjack commonly describes a procedure in which the dealer receives two initial cards, with one face down as the hole card. At many tables the dealer checks for a blackjack when the upcard is an ace or ten-value card before player decisions continue. The exact dealer soft-17 rule, deck count, surrender availability and blackjack payout still vary.

That early check matters when a player would otherwise add exposure by splitting or doubling. If a dealer blackjack is confirmed before those actions, the hand settles before the extra wagers are placed. The procedure reduces a particular uncertainty; it does not determine the whole house edge.

The Simulator at /en/simulator labels its ruleset so each educational hand has a visible context. Choose the matching setup before using the Strategy Tables at /en/strategy/tables, and review any displayed restrictions on doubles, splits and surrender.

European Blackjack centres on the no-hole-card condition

European Blackjack is a broad label, not a continent-wide rules contract. Its central distinction is often European no-hole-card dealing: the dealer initially shows one card and receives or reveals the second dealer card after player decisions. The consequential detail is the settlement rule if that second card makes a dealer blackjack.

Some games expose the player to the full amount committed through doubles or splits when the delayed dealer card forms blackjack. Other rules protect some additional exposure. The difference changes the appropriate decision model against a dealer ace or ten-value upcard, so it belongs in the ruleset rather than in a footnote.

European operators can also use table-specific terms within their regulatory framework. The practical reading list remains the same: deck count, dealer soft-17 rule, double-after-split permission, surrender and the treatment of additional wagers.

Spanish 21 changes the deck and adds player rules

Spanish 21 uses Spanish decks with the four ten cards removed from each 52-card deck, leaving 48 cards per deck. Face cards still count as ten. Removing tens changes the composition that drives draws, dealer outcomes and the value of player totals.

The game is usually paired with player-favourable provisions that classic blackjack may not offer. Common packages include late surrender, double after split, resplitting aces, doubled hands after splitting aces, and surrender after doubling. Bonus payouts can have exclusions for doubled or split hands. Another Spanish 21 table may use a different package, so each benefit needs to be checked rather than assumed.

Spanish 21 needs its own strategy policy. A classic basic-strategy decision assumes a 52-card deck and classic settlements. Applying it without adjustment can erase the effect of the missing tens, the extra actions and any automatic or bonus 21 treatment.

Blackjack Switch starts with two equal wagers

Blackjack Switch gives one player two hands and requires equal initial wagers on both. After the initial deal, the player may exchange the second card of one hand with the second card of the other, then plays the resulting hands under the table rules. This creates a decision that evaluates a pair of hands together.

The exchange is balanced by different settlements. Colorado’s gaming rule specifies that a switched blackjack counts as 21, standard player blackjacks pay even money, and a dealer total of 22 can push non-busted hands under its permitted schedules. These terms are material. A rule that turns dealer 22 into a push changes the value of totals that would ordinarily win.

Open the Rules Compare workspace at /en/rules/compare to inspect named rule differences such as dealer soft 17, blackjack payout or double after split. Use a Blackjack Switch-specific policy for the exchange itself, then keep the comparison tied to the precise configuration shown by the tool.

Compare the rules that alter decisions

The features that should be checked before selecting a blackjack strategy model.Scroll table horizontally
FeatureAmerican BlackjackEuropean BlackjackSpanish 21Blackjack Switch
Initial dealer procedureUsually two cards with a hole cardOften no-hole-card dealingCommonly a hole card, table dependentOne dealer card plus two player hands, table dependent
Deck compositionStandard 52-card decksStandard 52-card decks48-card Spanish decks without tensStandard 52-card decks
Extra decisionStandard actions and optional surrenderStandard actions adjusted for delayed dealer blackjackMay include liberal doubles, late surrender and rescueExchange the second cards between two hands
Important settlement checkDealer blackjack check and posted payoutExposure if delayed dealer card is blackjackBonus and automatic-21 rules, plus exclusionsSwitched blackjack treatment and dealer-22 rule

The table is a reading aid, not a substitute for the game notice. Every row can change by operator, jurisdiction and specific table. Use the House Edge workspace at /en/house-edge for a named configuration, then compare only inputs that are actually defined.