按钮位翻前双连注彩虹面（BTN Preflop Double Barrel Rainbow）

Term Analysis

"BTN Preflop Double Barrel Rainbow" is not a standard poker term, but rather a description of a specific scenario combination. BTN (Button) is the best position at the table and often takes aggressive action preflop. Double Barrel refers to consecutive bets on the flop and turn, usually to apply continuous pressure. Rainbow means the three flop cards are all of different suits, reducing the likelihood of a flush draw.

Strategic Implications

This phrase describes a typical play by a button player: raise preflop, then on a rainbow flop, first bet on the flop (continuation bet), followed by a second bet on the turn (second barrel). This line exploits positional advantage and board structure, representing either a strong hand or a semi-bluff. A rainbow flop reduces the opponent's flush draw possibilities, making the continuation bet more credible as representing value.

Usage Scenarios

• When the flop is a rainbow and favors the button player's range (e.g., high cards or low cards).
• The button player has a wide preflop range and polarizes that range through consecutive bets, forcing opponents to fold.
• Example: BTN raises, BB calls. Flop K♠ 9♦ 2♥ (rainbow), BTN bets 2/3 pot; turn 5♣, BTN bets 2/3 pot again.

Notes

The combined term "Preflop" and "Double Barrel" can be ambiguous, as Double Barrel strictly refers to postflop actions. In practice, it should be interpreted separately: the preflop action is a raise, while Double Barrel is consecutive betting postflop.

Related Terms

• Button
• Rainbow Flop
• Double Barrel
• C-Bet