Short Deck 6+ Set vs. Straight Strategy Guide

Short Deck 6+: The Probability Dynamics of Sets vs. Straights

Short Deck 6+ (also known as short deck) removes all cards 2 through 5, leaving only 36 cards. This significantly alters hand strength distribution: the probability of hitting a straight increases dramatically (approximately 1.5 times more likely than in standard Texas Hold'em), while the probability of making a set also increases slightly (around 12%). In key confrontations where you hold a set and your opponent may have a straight or a straight draw, you need to reassess your offensive and defensive strategies.

Quick Probability Overview

• Flop a set: The probability of flopping a set with a pocket pair is approximately 12% (with 36 cards, 32 unknown; formula: 1 - (32/34 * 31/33 * 30/32) ≈ 11.6%).
• Flop a straight: With connecting hands (e.g., J-T), the probability of flopping a straight is about 3.5%, but the chance of drawing to a straight is high (e.g., an open-ended straight draw occurs roughly 25% of the time on the flop).
• Set vs. made straight: Suppose you hold pocket kings, and the flop comes K-8-2. Your opponent holds 9-T, making a straight (no pair on board). Your set's outs: 1 king (quads), plus the two remaining eights and two remaining deuces (4 cards total), giving you 5 outs to a full house or quads. Note that in short deck, the number of outs can vary depending on the board. Typically, a set has about 20%-27% equity on the turn, depending on the remaining cards.

Flop Decision-Making

The flop is the critical decision point. Your approach with a set changes based on board texture:

1. Dry Boards (No Straight Possible)

Example board: K-7-2 rainbow, no three consecutive cards of the same suit. You should bet or raise aggressively for value. Opponents with top pair or a flush draw will call. In short deck, even small pairs are more willing to call because the probability of hitting two pair or a set is higher. Recommended bet size: 2/3 pot.

2. Wet Boards (Straight Draws Present)

Example boards: J-T-8 or 9-8-7, with many straight draws. You are ahead of draws but vulnerable to being overtaken. Bet larger (about 3/4 pot) to deny proper odds to draws. If your opponent raises, analyze their range:

• They may already have a straight (e.g., Q-9 on a J-T-8 flop).
• Or a combo draw like two pair + a straight draw. You can call here, as your set still has chances to improve to a full house on the turn.

3. Board Shows a Made Straight

The flop completes a straight (e.g., 9-8-7 with no pair on board). You are way behind. It is generally recommended to check and observe your opponent's action. If they bet, decide based on pot odds: Suppose the pot is 10 BB and your opponent bets 8 BB; you need 36% equity to call. Your set has approximately 25% equity, making a direct call -EV. However, if implied odds are high (e.g., deep stacks, you can win a large pot if you hit a full house), a call may be considered.

Turn Adjustments

The turn can change the strength of your hand:

• Turn pairs the board: For instance, flop J-T-8, turn J. Your set of jacks (if you hold JJ) improves to a full house, now ahead of all straights. Bet aggressively, even consider shoving, because your opponent’s straight becomes the second-best hand.
• Turn completes a straight: For example, flop J-T-8, turn 9. Now the nut straight is AJ or KQ. Your set has not improved, and the board has four to a straight. Your opponent may hold a smaller straight or top pair, but your equity drops. Against a large bet, consider check-folding; if the bet is small, you can call to see the river.

River Strategy

If you do not improve to a full house by the river, your set can typically only beat bluffs. The straight is already there; your set becomes a bluff catcher. Assess whether your opponent is prone to bluffing. If they check out of position, you can make a thin value bet (if you believe they missed the straight). In most cases, the prudent choice is to check back or fold to a bet.

Common Mistakes

• Overvaluing the strength of a set: In short deck, straights are so common that you cannot blindly shove as you would in standard Hold'em.
• Underestimating draw odds: Even if your opponent is on a straight draw, your bet must be large enough; otherwise, calling can be +EV for them.
• Failing to fold when behind: When the board shows a four-card straight or pairs up, set holders still need to assess whether their hand is now only the second-nut hand.

Summary

In Short Deck 6+, the battle between a set and a straight is a dynamic game. Your advantage lies in implied odds (once you make a full house, opponents will find it hard to fold), but your disadvantage is the high frequency of straights. Key principles: bet for value on dry boards, protect on wet boards, and proceed carefully on boards with a made straight. Be patient in waiting for a full house, but do not pay too high a price to chase it.