Two players have 17. One holds a ten and a seven. The other has an ace and a six. With a six showing for the dealer, the first player stands and the second can double. The number is the same. What the next card can do to it is different.
Win ahead of the dealer and stay below 21. A dealer bust pays out any live hand. Blackjack uses the math expectancy to figure out when to take a card, when to stand with the total and when to make an additional bet with a double or a split. With blackjack rules in your favor, the house edge can be as low as 0.5%. The charts for Malaysia, Singapore and Thailand use 4 to 8 decks. The dealer is required to stand on soft 17 (S17) and players are allowed to double after a split (DAS). The payouts and dealer rules can also affect the cost of a move.
Blackjack Rules From the First Card
Under blackjack rules at PlayDash casino, each seat plays against the dealer. The multi-deck shoe supplies two cards per player. The dealer’s visible card is the upcard.
When an Ace Changes the Total
Cards from 2 to 10 are worth their printed values. Jacks, queens and kings count as ten. An ace counts as eleven while it fits, and one when eleven would put the hand over 21. A hand is soft while an ace still counts as eleven.
| Cards | Total | Type |
|---|---|---|
| 10 + 7 | 17 | Hard |
| A + 6 | 17 | Soft |
| 10 + 6 + A | 17 | Hard |
| A + A + 5 | 17 | Soft |
Take a nine on A–6 and the ace drops to one, leaving 16. Take the same nine on 10–7 and the hand busts at 26. A draw can turn a soft total hard. It cannot bust it outright.
The Dealer’s Instructions at 17
At a U.S.-style peek table, the dealer starts with one card up and one down. The dealer draws below 17 and stands on hard 17 or higher. S17 means the dealer also stands on A–6. H17 means the dealer draws on soft 17. That change adds about 0.2 percentage points to the house edge.
An ace or a ten-value upcard can trigger a peek before anyone puts extra chips in. With European no-hole-card rules, the dealer’s second card comes after the players have acted. If it completes a natural, full ENHC rules also take the chips added to a losing hand by doubling or splitting.
What Comes Back on a Winning Hand?
An ordinary win earns one unit per unit staked, with no commission of the kind described in Baccarat Rules, How to Play and Win. A natural, an ace with a ten-value card on the initial deal, earns 3:2 at a standard table. Matching totals normally push and the stake comes back. A natural beats an ordinary 21, including one from a split hand. Two naturals push.
On a stake of 10, a natural earns 15 in profit at 3:2 and 12 at 6:5. The lower payout adds about 1.4 percentage points to the house edge. Following the chart closely cannot make up for the lower payout.
Six Decisions, Including Two Optional Ones
When learning how to play blackjack, notice which moves cost extra. Hitting and standing leave the stake alone. Doubling and splitting add to it. The table’s blackjack rules determine whether surrender is offered.
| Action | When it comes up | What it does |
|---|---|---|
| Hit | While the hand is active and drawing is allowed | Take another card. |
| Stand | While the hand is active | Finish the hand at its current total. |
| Double | Usually on the first two cards, subject to table rules | Double the stake, take one card and finish. |
| Split | With an eligible pair | Start two hands, each with a stake equal to the original. |
| Surrender | On the original two cards, where offered | Give up the hand and recover half the stake. |
| Insurance | When the dealer shows an ace | Put up to half the main stake on dealer blackjack. It pays 2:1 if it wins. |
At 3:2, accepting even money on a natural against a dealer ace has the same effect as taking full insurance. Insurance alone carries an edge of roughly 7% in a six-deck shoe under a simple upcard-only estimate. Basic strategy passes on both offers.
What One Card Is Worth When Doubling
Any ten, jack, queen or king turns hard eleven into 21. A nine makes it 20. Those are strong finishes against a dealer six, an upcard with a high bust rate. Hard ten also makes 20 with a ten-value card or 21 with an ace. Some tables allow doubles on any first two cards. Others restrict them to hard 9–11 or 10–11.
What Splitting Commits You To
Split 8–8 on a stake of 10 and each new hand has 10 riding on it. Each eight gets another card. The hands play out and settle separately.
- A resplit may be allowed, often to a maximum of three or four hands in total.
- Split aces commonly receive just one new card each.
- Double after split, or DAS, determines whether a new two-card hand can be doubled.
- An ace and a ten-value card on a split hand usually count as ordinary 21 and pay accordingly.
What the Strategy Has Already Worked Out
Deal the same opening hand over and over, with different cards to follow. Blackjack basic strategy keeps the move with the best average return. That can be calculated directly or tested across millions of simulated deals.
With favourable rules, the house edge can sit near 0.5%. Refusing to draw on hard 12 or higher can push it past 2%. Several tens from the previous round leave the chart’s answer unchanged. Tracking what’s left in the shoe is the subject of How to Count Cards in Blackjack Explained.
Hard Totals and the Point Where a Hit Gets Expensive
After checking the pair chart, use these blackjack basic strategy rows for hard totals. The rules are four to eight decks, S17, DAS, a U.S.-style peek and doubles on any opening two cards. Read A as ace and 10 as any ten-value card. If a hard double is unavailable, take a hit.
| Your hard total | Double against | Stand against | Hit against |
|---|---|---|---|
| 8 or less | — | — | 2–A |
| 9 | 3–6 | — | 2, 7–A |
| 10 | 2–9 | — | 10, A |
| 11 | 2–10 | — | A |
| 12 | — | 4–6 | 2–3, 7–A |
| 13–16 | — | 2–6 | 7–A |
| 17–21 | — | 2–A | — |
When late surrender is available in this S17 game, use it on original hard 16 against 9, 10 or A, and original hard 15 against 10. Play 8–8 through the pair chart.
Why Hard 12 Treats a Three Differently
A hard 14 against a six can sit still while the dealer takes the risk of drawing. Against a nine, waiting more often leaves the player short of the dealer’s finished total. Hard 12 has a little more room to draw. Against a two or three, it still hits.
These rounded dealer bust rates are for six decks and S17, after a peek has ruled out a natural where applicable. A six is a vulnerable upcard. Even then, the dealer busts less than half the time.
| Dealer upcard | Approximate bust rate |
|---|---|
| 2 | 35% |
| 3 | 37% |
| 4 | 40% |
| 5 or 6 | 42% |
| 7 | 26% |
| 8 | 24% |
| 9 or 10 | 23% |
| A | 17% |
Reading the Three Doubling Rows
All three totals double against a three. Against two or nine, hard nine drops out. Against ten, only hard eleven doubles. With an ace showing, all three hit in this S17 game.
Soft Totals and the Room an Ace Gives You
Soft 18 is where a quick read of the total can lead to the wrong move. Against eight it stands, against six it can double, and against nine it hits. The soft blackjack strategy chart below uses the same four-to-eight-deck S17 and DAS rules as the hard chart.
| Your two cards | Double against | Stand against | Hit against |
|---|---|---|---|
| A–2 or A–3 | 5–6 | — | 2–4, 7–A |
| A–4 or A–5 | 4–6 | — | 2–3, 7–A |
| A–6 | 3–6 | — | 2, 7–A |
| A–7 | 3–6 | 2, 7, 8 | 9, 10, A |
| A–8 or A–9 | — | 2–A | — |
Suppose A–7 faces a six but the table won’t allow the double. Keep the 18. For the lower soft hands marked to double, take a card instead if the option is missing. Against 9, 10 or A, A–7 already calls for a hit. The ace can drop to one if the new card is large.
Which Pairs Are Worth a Second Stake?
Read pairs separately before using their hard total. Here DAS is allowed, so the ability to double a new hand affects which pairs are worth breaking up.
| Pair | Split against | What to do elsewhere |
|---|---|---|
| A–A or 8–8 | 2–A | — |
| 10–10 | — | Stand on 20. |
| 9–9 | 2–6, 8–9 | Stand against 7, 10 or A. |
| 7–7 | 2–7 | Hit. |
| 6–6 | 2–6 | Hit. |
| 5–5 | — | Double against 2–9 if allowed. Otherwise hit. |
| 4–4 | 5–6 | Hit. |
| 2–2 or 3–3 | 2–7 | Hit. |
Without DAS, hit 4–4 against five or six, 6–6 against two, and 2–2 or 3–3 against two or three. Without the option to double, those extra hands are worth less.
Why Aces and Eights Get Their Own Rule
A–A together is soft 12. Split them and each new hand starts with an ace that can count as eleven. Two eights together leave a hard 16. Starting two hands from eight improves the average result under the reference rules, even against a ten or ace. Those matchups remain unfavourable, and a split still puts a second stake at risk.
Why Tens and Fives Stay Together
Two tens already make 20. Breaking them up throws away a strong finished hand. Two fives are better read as a single hard ten. Against 2–9, that total can double if allowed.
- Keep 9–9 together against seven. Eighteen already beats a dealer who stops at 17.
- Check DAS before splitting fours into a dealer five or six.
- Read 8–8 through the pair row before treating it as a hard 16.
How One Line in the Table Rules Changes the Play
A blackjack strategy chart belongs to a particular set of rules. The figures below are approximate percentage-point changes to the house edge, with other conditions held steady.
| Rule change | Effect on house edge | What changes in play |
|---|---|---|
| H17 replaces S17 | About +0.2 | Double hard 11 against A, A–7 against 2 and A–8 against 6 when allowed. |
| 6:5 replaces 3:2 | About +1.4 | The main chart plays broadly carry over, but a natural earns less. |
| DAS is removed | About +0.14 | Some low pairs stay together against weak upcards. |
| One deck replaces six | Generally lower with the same rules | Use a single-deck chart. Some doubles and borderline totals change. |
| Late surrender is added | About −0.08 | Some opening 15s and 16s can be surrendered. |
| Full European no-hole-card rules apply | Depends on which stakes are at risk | If a dealer natural takes added wagers, hit hard 11 and 8–8 against 10 or A. Hit A–A against A under standard full ENHC. |
Some no-hole-card games return added stakes against a natural. The rule on those chips matters when choosing a chart.
Learning the Chart One Decision at a Time
Keep hard 12 fixed and swap the dealer’s three for a four, the same active-recall drill that works for a poker hand rankings chart. Then run soft 18 against six, eight and nine.
- Learn hard totals first, then soft totals, then pairs.
- Use the upcard as a cue. Against 2–6, many stiff hands wait. Against 7–A, more of them draw.
- Use flashcards or a free trainer configured for the chart’s rules.
- Keep the chart handy wherever the game or venue allows it.
- Deal 100 random practice hands. Tally missed doubles separately from unnecessary splits so the next drill has a clear focus.
Continuous mistakes can affect the average cost even if a misplay happens to be the winning play. This game is played for entertainment only, and not for money. Players should know the local laws regarding the game. Play within your limits and take breaks. Leave borrowed money and all attempts to recover losses for the session.
Blackjack Strategy FAQ
A good rule of thumb for a six- to eight-deck game with S17, DAS and 3:2 pays, is 0.5% . The rest of the rules move it higher or lower. Guessing can push the edge to 2% or more. Those numbers reflect the long term average. The edges can vary greatly from the long term average, in either direction, in the short term.
This blackjack strategy declines insurance and even money at a 3:2 table. A 2:1 side bet needs dealer blackjack more than one time in three to make money. With only the ace accounted for in six decks, the chance is about 31%, leaving an edge near 7%. A card count can change that calculation.
A hard 12 playing against a three sees the same online action with the rules aligned. Basic strategy for Blackjack carries over. When playing a RNG game that resets the shoe each round, there is no running count for the next deal. A live dealer may continue to deal from a physical shoe. Match the chart for deck count with the rules, S17 or H17, doubling, and payout.
With hard 16 other than 8–8, surrender if late surrender is available on that hand. Otherwise hit under the reference rules. Both choices can have a negative average result, but standing leaves too many deals where the dealer finishes ahead. A pair of eights goes through the split row in this S17 peek game.
Online, a reference chart can typically sit next to the game window if the chart terms allow. At a live table, ask whether you can keep a printed chart on the rail. Most rooms don’t allow it. Deal the cards. Use the chart to assist your game at that table to indicate deck count, soft-17, DAS and surrender rules.
