Almost every interesting decision in blackjack arrives after you have seen your cards. Double Attack blackjack moves one decision in front of them. The dealer's upcard comes out first, and before you receive a single card of your own, you may raise your bet by up to the amount you already wagered.
That one change is the whole sales pitch, and it is a good one. In standard blackjack, the opening bet is fixed before you see any card. Here you get a look at the dealer's exposed card, in a game where the upcard drives nearly everything, and then decide how much the next round is worth to you.
The house is not giving that away. The game is dealt from decks with the tens removed and pays even money on a player blackjack, and both of those are expensive. This piece covers how the game works, what it charges, and the published figures for the result, using Wizard of Odds' analysis as the source throughout. For the wider tour of how variants trade rules against each other, our comparison of blackjack variants sets the scene.
How the game deals
The table rules, as Wizard of Odds states them: eight 48-card Spanish decks, meaning each conventional 52-card deck with the four tens removed, jacks, queens and kings kept. The dealer stands on soft 17 and peeks for blackjack. Double after split is allowed. Aces may not be resplit; other pairs may be resplit to 3 or 4 hands depending on the casino, and the analysis assumes 4. A winning player blackjack pays even money. The player may double or surrender at any time, including after splitting, though any one hand may be doubled only once, and a surrender after splitting is decided hand by hand. Split aces receive one card only. Insurance pays 5 to 2 rather than the standard 2 to 1.
Then the namesake. The first card dealt is the dealer's upcard. Immediately after it appears, and before any player card is dealt, you may raise your bet by up to the original wager. The raise ripples through the rest of the hand: a player who later splits must match the Double Attack bet on the new hand, a player who doubles may double up to the sum of the original and Double Attack bets, and a surrender refunds half of both.
Why the raise is worth having
The raise would be trivial if you had to commit it before seeing anything, but the order of the deal makes it informed. You know the upcard, the only card on the table at that point, and then you choose whether the next round is a minimum-bet round or a double-bet round. Wizard of Odds' strategy for the raise is simple to state: attack when the dealer's upcard is 2 through 8, and hold the bet down against a 9, 10 or ace. Per its figures, that rule has you raising on 58.3 percent of hands.
That structure is the whole appeal. The upcards where the player's expectation is better get more money on them, and the upcards where it is worse get the minimum. It is the same logic as doubling and splitting in ordinary blackjack, the standard game's ways to put more money on a hand after seeing cards. Double Attack simply moves a version of that privilege to the start of the hand and widens it.
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The price, part one: no tens in the deck
The compensation for the raise starts with the decks. Spanish decks hold twelve ten-value cards per deck instead of sixteen, and the effect of thinning the ten supply is the subject of our Spanish 21 piece: blackjacks arrive less often, doubles land worse, and the dealer, forced to draw on stiff hands, busts less often because the cards most likely to break those hands have been thinned out. That piece notes the change is commonly estimated to hand the house roughly two percentage points in Spanish 21 before that game's compensating rules are added back, and the direction of every one of those effects is the same here.
The price, part two: even money blackjacks
The second charge is the payout line. A winning player blackjack pays even money, full stop. To see how steep that is, start from what the payout ladder costs lower down: as Wizard of Odds calculates, moving from 3:2 to 6:5 costs the player roughly 1.39 percentage points of house edge, the single most expensive common rule change in the standard game, and our 3:2 versus 6:5 comparison walks the arithmetic. Even money sits another rung below 6:5 on the same ladder. Variants that pay only even money on a natural do so because the reduction buys the player something else, as our tour of every payout you will meet explains, and in this game it helps pay for the attack.
The edge figures, and what they mean
Per Wizard of Odds, the house edge in Double Attack blackjack is 0.62 percent with correct play and correct raising. The same analysis puts the element of risk at 0.35 percent. The two numbers measure different denominators, and the distinction matters here.
The house edge is the expected loss as a percentage of each bet, averaged over the long run, as our house edge guide explains; in Wizard of Odds' figure for this game, the bet is the original wager. The element of risk divides expected loss by the total money bet, and in this game you frequently bet more than the original wager between the attacks, doubles and splits, so the same expected loss comes out as a smaller share of a larger denominator. Neither number is a promise about any session, which is the guide's other honest lesson, and no version of this game removes risk.
Insurance at 5 to 2
One more number deserves a careful sentence. Insurance in this game pays 5 to 2, better than the 2 to 1 it pays in standard blackjack, and 2 to 1 is already a bet basic strategy declines, for the reasons our insurance piece lays out. The higher payout does not rescue it here: Wizard of Odds still puts the house edge on this insurance at 12.27 percent. We will not derive why the number lands where it does, only report that it does, and that it sits far above the edge of a well-played standard game.
Your blackjack chart does not carry over
The practical warning is the same one our Spanish 21 piece gives. Missing tens, an even money natural, a raise decision before the deal: this is a different game with different math, and Wizard of Odds publishes a separate strategy computed for it. A player who sits down with a standard basic strategy chart will play a systematically wrong game while feeling entirely correct.
21 Trainer does not play Double Attack or any variant; it teaches standard blackjack, with full rule customization including deck count, the soft 17 rule, double after split and surrender on or off, so you can see exactly which cells a rule change moves. Variants are easiest to read once the standard chart is automatic, and that foundation is what the trainer builds.
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Frequently asked questions
What is Double Attack blackjack?
A blackjack variant dealt from eight 48-card Spanish decks, with the four tens removed from each. Its signature feature is the Double Attack: the dealer's upcard is dealt first, and before you receive your own cards you may raise your bet by up to the original wager. A winning player blackjack pays even money, and insurance pays 5 to 2.
When should you raise your bet in Double Attack blackjack?
Wizard of Odds' analysis says to raise when the dealer's upcard is 2 through 8, and to leave the bet alone against a 9, 10 or ace. Per its figures, that has you raising on 58.3 percent of hands. The raise is the game's hook because you make it after seeing the upcard, putting more money down only when the situation favors you.
What is the house edge in Double Attack blackjack?
Per Wizard of Odds, 0.62 percent of the original wager with correct play and correct raising. Because you often put more money down after seeing cards, its element of risk, expected loss divided by total money bet, is lower, at 0.35 percent. Both figures assume the game's own strategy, not a standard blackjack chart.
Why does Double Attack use Spanish decks?
Removing the tens is part of how the house pays for the Double Attack privilege, along with even money blackjacks. Each Spanish deck holds twelve ten-value cards instead of sixteen, and as our Spanish 21 piece explains, that trims blackjacks, weakens doubles and makes the dealer bust less often, changes commonly estimated at roughly two percentage points in the house's favor before any compensating rule is added back.
Can you use a normal blackjack chart in Double Attack?
No. Between the missing tens, the even money blackjack and the raising decision, the game's math differs from standard blackjack, and Wizard of Odds publishes a separate strategy computed for it. Playing a standard chart at this table would be systematically wrong while feeling entirely correct, the same trap our Spanish 21 piece describes.