Blackjack decision cheat sheet: the habits that keep the house edge low

Memorise a handful of rules, practise them for free, and the game stops being a guessing contest.

Which rules of thumb deserve a place in memory?

Start with these six and you already play better than most of the table.

1. Aces and eights: always split.
2. Tens and fives: never split.
3. Hard 11 is a double against most dealer cards, and hard 10 is a double against a dealer 2 to 9.
4. Hard 17 or more: stand.
5. Hard 12 to 16: hit against a dealer 7 or higher, stand against most of the dealer's 2 to 6 (a 12 against a 2 or 3 still hits).
6. Hard 8 or less: hit.

Table variations nudge a few plays, so a chart that matches your game is best.

How do you play a hand with an ace?

An ace counted as 11 makes a soft hand, which cannot bust on the next card, so you may be bolder. Soft 18 stands against a dealer 2, 7 or 8, doubles against 3 to 6 where allowed, and hits against 9, 10 or ace. Soft 19 and 20 stand. Soft 13 to 17 usually double against a weak dealer card (4 to 6, depending on the hand) when doubling is allowed, and hit otherwise.

Is there a shortcut by dealer card?

A very rough compass: when the dealer shows 2 to 6, think defence, standing on most stiff hands and doubling on 9 to 11. When the dealer shows 7 to 9, think offence, hitting 12 to 16 and standing on 17. When the dealer shows a ten or an ace, keep hitting up to 16 and leave insurance alone.

Rehearse in demo mode with a chart beside you, as described on the free casino games page.

Which side dishes should you refuse?

Insurance pays 2 to 1 if the dealer has blackjack, yet it costs far more than the main game. Perfect Pairs, 21+3 and their cousins are pricier still. Walk away from tables paying 6 to 5 on a natural. And forget counting cards online: RNG tables reshuffle every hand.

How large should each bet be?

Fix a session budget, say CAD 100, and keep each bet around 1 to 2 per cent of it, which means CAD 1 to CAD 2 a hand. Never double the stake after a loss, and stop when you hit your limit or your time. For a monthly figure, use the monthly fun fund planner, and look at table rules on the blackjack page.

Which slip-ups cost the most?

Standing on 12 against a dealer 2 or 3 because it feels scary. Splitting tens. Taking insurance when you hold a strong hand. Changing your play after a loss on a hunch. Sitting down at a 6 to 5 table. Each one is small in a single hand and expensive across a night.

How do you build the habit for free?

Open a demo table or a free trainer and play a few hundred hands with the chart in view. Mark the spots where you hesitate or err, then go again. Practice without money builds muscle memory without the weight of a balance. When you play for real, start with the smallest stake and aim to follow the chart, not to win losses back.