Cold 4bet Strategy and Timing: When to Re-raise a 3bet

What Is a Cold 4-Bet?

A cold 4-bet occurs when a player opens (open raise), another player 3-bets, and you — having not yet put any chips in — make a 4-bet directly. Unlike a standard 4-bet, the cold 4-bettor hasn't participated in the initial raise, making the range narrower and the signal stronger.

Cold 4-bets are typically used against aggressive 3-bettors, especially when their 3-bet range is wide. It can either take down the pot immediately or maintain the initiative post-flop.

When to Cold 4-Bet

Not every situation is suitable for a cold 4-bet. The best times are:

• Opponent 3-bets frequently: If an opponent on the button or small blind 3-bets an early position raise more than 10% of the time, a cold 4-bet can punish their wide range.
• You are in position: Cold 4-betting from the button or small blind maximizes your post-flop positional advantage.
• Effective stacks are deep: Generally recommended at 100BB or more, as the pot becomes larger and deep stacks allow more maneuvering.
• Opponent folds to 4-bets often: If their fold-to-4-bet rate exceeds 60%, the immediate profit from a cold 4-bet is significant.

Building a Cold 4-Bet Range

A cold 4-bet range should be polarized, containing value hands and bluffs. A typical range:

• Value hands: QQ+, AK (about 2.6% of hands). These have enough equity against the opponent's 3-bet range and can withstand a 5-bet shove.
• Bluffs: A5s, A4s, KQo, KJs, etc. (about 3–4% of hands). These have good blocker effects and some post-flop playability.

Example: If the opponent 3-bets from the button and you cold 4-bet from the small blind, your range could be: {QQ+, AK, A5s, A4s, KQo}. Avoid including weak hands like small pairs or suited connectors, as they are difficult to play post-flop.

Timing Your Cold 4-Bet

Timing is crucial for a successful cold 4-bet. Consider these factors:

• Position: Cold 4-betting from the button or small blind works best because you force the opponent to play out of position. Cold 4-betting from the big blind is rarer, as the big blind already has chips invested and tends to defend more.
• Opponent type: Use cold 4-bets less against tight-passive players (nits) because their 3-bet range is strong and they fold less; use them more against aggressive players (LAGs) because their 3-bet range is wide and they fold often.
• History: If you have folded to many 3-bets recently, opponents may perceive you as weak, making a cold 4-bet more effective. Conversely, if you 4-bet frequently, opponents will adjust and fold less.
• Stack sizes: Cold 4-bets are most ideal when effective stacks are 100–150BB. Below 80BB, opponents might 5-bet shove with a wider range, increasing your risk.

Post-Flop Action After a Cold 4-Bet

After a cold 4-bet, the opponent may call or 5-bet. Plan ahead:

• Facing a 5-bet: Call or shove with value hands (QQ+, AK); fold with bluffs (A5s, etc.) unless you have a specific read.
• Facing a call: Continue betting based on board texture. Generally, a cold 4-bet range has high equity on flops, especially those with high cards or draws.

Common Mistakes

1. Too wide a cold 4-bet range: Using too many weak hands leads to passive post-flop play, especially against opponents who don't fold.
2. Ignoring position: Cold 4-betting out of position (e.g., from the big blind) makes it hard to profit post-flop.
3. Excessive frequency: Cold 4-betting more than 3% of the time makes you exploitable; opponents will 5-bet with a tighter range.
4. Not adjusting to opponents: Continuously cold 4-betting opponents with low fold-to-4-bet rates is a direct chip donation.

Summary

Cold 4-betting is an advanced strategy best used when opponents 3-bet frequently and fold to 4-bets often. Building a polarized range, choosing in-position spots, and adjusting based on opponents are key to success. Remember, a cold 4-bet is not a standard weapon but a situational adjustment. In practice, combine it with HUD data (e.g., 3-bet%, fold-to-4-bet%) to significantly improve your pre-flop profitability.