Preflop Opening Range Overview

What is 6-Max Preflop Opening

6-max (short for 6-handed) is the most common short-handed format in Texas Hold'em. Compared to full ring (9 or 10 players), there are more players in the blinds, so preflop opening ranges need to be wider. "Opening" refers to the first raise that enters the pot voluntarily, usually when no one else has entered.

6-Max Position Breakdown and Suggested Ranges

The six positions in 6-max are: UTG (under the gun, 4th seat left of the small blind), HJ (hijack, to the right of UTG), CO (cutoff, left of the button), BTN (button, also called the dealer), SB (small blind), BB (big blind). Note: the button is the last to act.

Below are typical opening ranges for 100BB effective stacks with no ante (about 40%–60% of hands). Actual ranges should adjust based on opponents.

• UTG: ~15%–20% of hands. Suggested: 22+, A9s+, AJo+, K9s+, KQo, QTs+, JTs, T9s. Avoid playing weak suited connectors.
• HJ: ~25%–30%. Add to UTG range: A5s-A2s, A8o-A7o, K7s-K8s, Q9s+, J9s+, T8s+, medium connectors (e.g., 98s).
• CO: ~35%–40%. Add: all AXs (suited aces), A2o-A5o (strong offsuit aces), K2s-K5s (small suited kings), Q8s+, J8s+, T7s+, 98s, 87s, 76s.
• BTN: ~45%–55%. Very wide: all pairs, all suited aces, all offsuit aces (A2o+), Kx suited (K2s+), Qx suited (Q2s+), Jx suited (J3s+), Tx suited (T6s+), 9x suited (96s+), 8x suited (86s+), 7x suited (75s+), all suited connectors (54s+), and some offsuit connectors (K9o+, Q9o+, J9o+, T9o, 98o, etc.). Avoid very weak offsuit connectors like 73o.
• SB: ~35%–45%. Due to being out of position and already invested half a blind, tighten the range: all pairs, AXs, A8o+, K9s+, KTo+, QTs+, JTs, T9s, 98s, 87s. Avoid weak suited connectors.
• BB: When facing a raise, the big blind defends with a wide range, but opening from the big blind is rare (unless no one else entered). Usually the big blind does not actively open because they already have money in and can see a free flop.

These ranges are a baseline. Adjust based on the situation.

Adjustment Factors

1. Stack Depth:

   • Deep stacked (>100BB): Widen opening range, especially with suited connectors to form strong draws postflop.
   • Short stacked (<30BB): Tighten range, favoring high cards and big pairs, avoid marginal hands.

2. Opponent Types:

   • Against loose-passive players: Tighten opening range but increase raise size (e.g., 3–4 BB open).
   • Against tight-aggressive players: Widen range and use position to steal blinds.

3. Antes:

   • When antes are present, there is more dead money in the pot; widen opening range and increase open size (e.g., from 3 BB to 4.5 BB).

4. Position:

   • Late positions (CO, BTN) have the widest ranges. Early positions (UTG, HJ) have the tightest.

Common Mistakes

• Mistake 1: Playing too wide from UTG. Beginners often play 50%+ of hands, making postflop difficult.
• Mistake 2: Not raising or over-raising from the button. Not raising forfeits the positional advantage; over-raising (e.g., 6–7 BB) forces folds, losing profit.
• Mistake 3: Ignoring stack depth. Playing suited connectors when short-stacked is burning money.

Advanced Tips

• Balancing raises and limps: In some situations, mixing in limps can be useful, but generally raising is the standard preflop action, especially from later positions.
• Responding to resteals: When the big blind notices the small blind stealing frequently, the small blind should tighten up or raise larger.

Practical Example

Assume 100BB effective stacks, no ante, in the CO position. All fold to you, and you hold JTs. According to the range above, this is a standard open. Raise to 3 BB to steal blinds and build the pot. If the big blind 3-bets, decide to call or fold based on opponent tendencies. If you call, JTs plays well on most flops.

Summary

The key to 6-max preflop opening is position and range elasticity. Memorize the baseline ranges for each position, then adjust dynamically based on stack sizes, opponents, and antes. Gradually build your own opening database.