Short Deck Poker Complete Guide: Rules, Strategies, and Probability Changes

What is Short Deck Hold'em?

Short Deck Poker (also known as 6+ Hold'em) is a variant of Texas Hold'em that originated in high-stakes Asian cash games and later became popular worldwide. The biggest difference from standard Hold'em is removing all cards of ranks 2, 3, 4, and 5, leaving only 36 cards (6 through Ace). Therefore, hand probabilities, starting hand values, and drawing odds are fundamentally changed.

Basic Rule Differences

1. Card Count: 36 cards (6 through Ace, 9 ranks per suit, 4 suits). Usually, 36 cards from a standard 52-card deck are used.
2. Blinds: Common structure is small blind = 1, big blind = 2, or as set by the casino.
3. Dealing: Each player gets 2 down cards, 5 community cards, same betting rounds as standard Hold'em (preflop, flop, turn, river).
4. Hand Rankings: Flush beats full house (because flushes are easier to make? Actually, flushes are more common in Short Deck, but the rule is that flush still beats full house – this is a convention; minor variations exist across poker rooms, but this is the mainstream rule). Ace can be used as high or low; a straight of A-6-7-8-9 is valid (A used as 6).
5. Draw Adjustments: With fewer cards, backdoor draws increase in value.

Detailed Probability Changes

With 36 cards, each rank has only 4 cards. The number of starting hand combinations decreases, but high cards appear more frequently. Key probability changes:

Hand Combinations

• Total combinations: C(36,2) = 630 (standard Hold'em: 1326).
• Pairs: 6 combinations per rank (e.g., AA has 6), 9 ranks = 54 pairs, about 8.6% of hands (standard: ~5.9%). Pairs appear more often.
• Suited hands: Probability of suited hands differs; with fewer cards, flushes are easier.

Hand-Making Probabilities (Approximate)

The following probabilities compare Short Deck to standard Hold'em post-flop:

• Flush: Probability roughly doubles. For example, the chance of a flush draw on the flop is about 30% (standard: ~24%).
• Straight: Straight draws increase significantly. Due to the dense ranks (6-A), any two connected cards have many straight possibilities. Inside straight draws also become much more likely.
• Full House: Probability of a full house decreases. Because making trips requires a pair on the board and matching hole cards. With fewer ranks, trips are harder. Calculations show: standard full house probability ~0.14%; Short Deck ~0.1%, indeed lower.
• Straight Flush: Probability rises markedly because both straights and flushes become easier.

Hand Strength Reordering

In the mainstream Short Deck rules, hand rankings (high to low) are:

1. Royal Flush
2. Straight Flush
3. Four of a Kind
4. Flush (beats full house!)
5. Full House
6. Straight
7. Three of a Kind
8. Two Pair
9. One Pair
10. High Card

Note: Flush beats full house – a major adjustment from standard Hold'em that compensates for flushes being easier to make.

Key Strategic Changes

Preflop Starting Hand Ranges

• High pairs lose value: Because the chance of hitting a set is lower (only 2 remaining cards of that rank), and opponents are more likely to make straights or flushes, QQ, KK, and AA are not as dominant as in standard Hold'em. They are still strong, but require more caution.
• Suited connectors increase in value: Hands like A-K suited, 9-10 suited, J-10 suited become premium because flushes and straights are easier to make.
• A-x offsuit: Value decreases, especially A-9 or lower, as they are easily dominated.
• Small pairs (66-99): Speculative value drops because set probability is lower, and they often face high cards drawing to straights.

General advice: Preflop raising ranges should be wider, but favor suited connectors and non-pair high cards. For example, from HJ you can raise A-10 suited, K-Q suited, J-10 suited, etc., while in standard Hold'em some of these might be folds.

Postflop Strategy

• Aggressive drawing: Since making hands is more likely, draws (especially combo draws like flush + straight) have strong equity and are great for semi-bluff raises.
• Thinner value bets: Bottom or middle pair on a dry board may still be good because opponents have fewer strong pairs. But watch out for straight draws.
• Slow playing is dangerous: Flushes or straights are likely to arrive on the river, so strong hands (e.g., top pair top kicker) should raise quickly to protect.
• Backdoor draw value: With fewer cards, backdoor flush or straight draws have higher probability and may justify calling on the flop.

Example: Preflop AA

Assume you are in the big blind and the small blind raises to 3BB. In standard Hold'em, AA is a monster and you'd usually 3-bet. But in Short Deck:

• AA has about 76% equity vs a random hand preflop, but its win rate drops quickly on a flush or straight board.
• Recommendation: Still 3-bet, but possibly smaller (e.g., to 8-9BB). If called, be cautious postflop, especially on connected boards.

Example: Flush draw semi-bluff

Flop: K♠9♠7♦; you hold A♠10♠. You have a flush draw and an Ace-high, about 30% chance to complete the flush on the turn, plus a backdoor straight draw (if 8 or J comes). Betting 2/3 pot: if opponent folds, you win; if called, you still have good equity.

Common Misconceptions

1. Misconception: Flushes are easy, so they have low value. In fact, the rule adjustment means flushes still beat full houses, and straight flushes become more frequent; flushes remain strong hands.
2. Misconception: Small pairs are worth playing because they can make sets easily. Wrong. Set probability is lower (each rank has only 4 cards; you hold a pair, leaving only 2 left, whereas standard Hold'em has 4). Small pairs lose speculative value.
3. Misconception: A-K is still a monster. A-K remains strong in Short Deck, but suited A-K has far more value than offsuit because flush draws are more common.
4. Misconception: Flush beats full house is an arbitrary change. It's actually a necessary adjustment to balance probabilities, preventing flushes from being too common and thus undervalued.

Summary

Short Deck Hold'em is an exciting variant with a faster pace and more draws. Key takeaways:

• Prioritize suited connectors in starting hands; be cautious with small pairs.
• Postflop, aggressively semi-bluff, especially with combo draws.
• Adjust your value judgment according to the changed probabilities.
• Remember: Flush > full house; Ace can be used as a low card.

To adapt to Short Deck, you must break free from standard Hold'em thinking and embrace higher variance and more frequent draws. Practice preflop ranges and odds calculations to master it quickly.