Spanish 21 vs Blackjack. The main difference between Spanish 21 and most other forms of Blackjack is that it is played with a Spanish deck of cards that has 48 cards instead of the usual 52 – the deck is the same with all 10’s removed.
http://wizardofodds.com/games/blackjack/switch/
I was surprised to see that the odds were as low as they are. Using the basic Vegas rules found on the page, the house edge is only 0.58%. Locally, our casino uses an 8 deck shoe rather than the Vegas 6 deck game, also, a 'natural' (non-switched) 21 is an automatic win so the HE changes to 0.58% + 0.02% - 0.21% so the HE changes to 0.39% (if my understanding/math is correct.)
The best rules for a regular Blackjack game realistically/typically is a 2 deck game where the dealer stands on all 17s, you can resplit Aces, Surrender, Double Any 2 cards, Split up to 4 hands, and this has a HE of 0.26%. This game is VERY rare, and is usually only found in the High Limit areas where the min bets are typically $100 (occasionally $50 bets per the wizard's blackjack survey page.)
As a recreational gambler, not a whale, I look for the best games with the lowest min bets balanced against good rules. Usually a shoe game, $10 to $25 min bet tables that never allow resplitting of Aces. Full game rules are at best in this min bet range; 2 decks, no resplit Aces, Surrender, Dbl Any 2 cards, Split up to 4 hands, and the dealer hitting or standing on Soft 17 is usually a function of a $25 min bet, although that's not always the norm. Usually even at $25 min tables, the dealer hits a Soft 17.
The HE under these game rules are; HE of 0.33% if the dealer Stands on ALL 17s or a HE of 0.53% if the dealer Hits on all Soft 17s.
Odds calculated using:
http://wizardofodds.com/games/blackjack/calculator/
It appears that the HE of Blackjack Switch (adjusted to 0.39%) is better than the most common low limit games where the dealer hits on Soft 17 and actually only marginally worse than the HE of the less common game where the dealer stands on Soft 17.
Even Spanish 21 has a HE of 0.47%. This is VERY close (slightly better) to the typical low limit standard games.
Are my HE calculations correct? I've always thought that novelty variations on Blackjack were not as good as standard Blackjack and when it comes to the 'best' blackjack rules, this appears true. Since I can't afford to play $100 a hand High Limit games to gain that optimal advantage, is it really better to play Blackjack Switch or even Spanish 21?
Just bear in mind that the house edge of 0.39% will rise depending on the accuracy of your 'Switch' decisions. It has been estimated that a player who uses good switching play will still see around 0.2% added to the house edge due to incorrect marginal 'Switch' plays. However, since that work was done, there have been a few studies made on switching strategies, including one by The Wizard himself, and this can help to improve play.
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Good question. Yes, this house edge is definitely low enough to consider card counting. Since most card counters don’t even consider Spanish 21 I think the field is ripe to exploit the game and to do so with a great deal of impunity. However counting may not be as effective in Spanish 21 as regular blackjack. A small card rich deck will benefit the player in more multiple card 21’s. To the best of my knowledge nobody has developed index numbers for Spanish 21 but somebody should. Maybe I will.
Casino Player reversed the two charts in their layout. I'm very embarrassed by this mistake. Yes, you should hit a hard 17 against an ace if you can't surrender.
In a 6-deck game the probability of a super bonus is 1 in 668382, and in an 8-deck game it is 1 in 549188. The house edge without the super bonus would be 0.03% more either way.
Spanish 21! Under Atlantic City rules blackjack has a house edge of 0.43% and Spanish 21 of .40%.
The Venetian. To the best of my knowledge they are the only casino in Las Vegas which stands on a soft 17 in Spanish 21, lowering the house edge from 0.76% to 0.40%.
Update: The Venetian later switched to hitting a soft 17. As of this update (May 14, 2013) the best Spanish 21 game is at the D, which allows re-doubling.

All Unified Gaming casinos as well as Global Player offer Spanish 21. Unified Gaming stands on a soft 17 and thus has the lower house edge.
2013 Update: Unified Gaming software has since disappeared. As far as I know, nobody offers Spanish 21 online any longer.
Thanks for the compliment. The Spanish 21 rules are the same across Atlantic City. I only know of two that have the game, the Tropicana and the Claridge, but there could be others by now. If I'm not mistaken, the best craps game is at the Sands, which offers 5X odds. When I say to take the maximum odds I mean bet the maximum allowed on the odds. For example, $50 after a $10 line bet. Keep in mind that you won't win more money by taking the odds, you just get to bet more without losing more in the long run.
I always liked the name Thunder Bay for a city. I used to work at a summer camp not too far from there in Missanabie, Ontario. To answer your question 6 decks is better than 8. However the difference in the house edge is small, only about 0.03%.
With reference to the first table of the Basic Strategy for Spanish 21, I have some questions that I hope you could clarify for me (standard game, dealer hits s17):Q1. For 17 v A (your reference - Rh). If the player doesn’t surrender (or double down surrender), does he in fact hit? I ask this question because I’m a little unsure - Scoblete’s book says to stand 17 v A, as does Norm Wattenberger’s Spanish 21 strategy table in CVBJ3.
Q2. Your references to the 6-7-8 bonuses. Do all the references apply equally to the 7-7-7 bonuses? e.g. Does * mean 'Hit if any 6-7-8 [OR 7-7-7] bonus possible'?
Q3. p20 of Scoblete’s Spanish 21 book says to hit 9 v 6 if player has a 3 card 9. Should I ignore this advice, along with the 'don’t double down rescue' advice given in his book?
Sorry to bother you with these questions but I’ve got a Spanish 21 tournament coming up, and need all the help I can get. Many thanks.
- Yes, you should hit. I believe all those who disagree to be in error.
- No, the 7-7-7 bonus is only possible with two initial sevens. The proper strategy is indicated in that row.
- Yes, you should ignore this advice.
I get verbally abused too when I play Spanish 21. When I lived in Baltimore I played it a lot in Atlantic City because the house edge is lower than blackjack there. These idiots doing the abusing don’t understand that removing the tens from the decks makes hitting less dangerous because the probability of busting is less. Don’t bother to try to explain this, the logic won’t make it through their thick skulls. I used to just bite my tongue in these situations but the next time I may not be so nice.
What Is Spanish Blackjack
There was discussion about this at www.bj21.com under the Green Chip section about a couple years ago. As I recall the consensus was that counting was not as advantageous as in blackjack but you could get away with a lot more. I know of no published material on this.
Most redoubling situations tell you to double anyway. However, with a soft 15 to 17 against a 3, when the strategy says hit, you should actually redouble.
Thanks. This game is just a rip-off of Spanish 21. Note that the bottom of the card says that all queens are removed.

What Has Better Odds Spanish 21 Or Blackjack 2017
Keeping all the tens in the deck is worth 1.89% to the player. The house edge under those rules is normally 0.40%. So with all the tens in the shoe, the player edge would be 1.89%-0.40% = 1.49%.
What Has Better Odds Spanish 21 Or Blackjack
I don’t like it when games give worse odds to the higher bettors either. The value of these Super Bonuses is almost zero. The probability of hitting the Super Bonus is one in 549,000 with eight decks, and one in 668,000 million with six decks. Assuming six decks, the value of the envy bonus is worth 0.0015% per additional player, besides yourself. Sorry, I don’t know of any casinos that sweeten the bonuses for larger bets.
I really enjoy your site, and thank you for the pertinent information! Reading and learning has erased my bad habits and made me a better player, I am certain! Here is my question. I read about games you write about and really think that some of them would be fun to try, like the World Series of Poker (Final Table Bonus) video poker game.Not knowing, however, where to find it, and others, I usually wind up writing to the maker of the game at their website and asking where I can find their game outside of Nevada, since I am in the Midwest. I NEVER get an answer! Besides being just bad customer service, I still have the question of finding the game to be answered. Do you know of a site, or a way, to find which specific games are at which casinos? You would think the game’s manufacturer would list where to find it to assist in letting players find the game.
Spanish 21 Game Online
Thanks for the kind words. I think the gaming manufacturers should take this as a good suggestion. I get requested for this information by players all the time, but it is simply too much for one person to keep on top of. A noteworthy exception is Masque Publishing, the owners of Spanish 21. They keep an online list of where the liberal Spanish 21 rules can be found.



