关煞位河牌同花面加注后弃牌（CO River Raise-Fold Monotone）

Meaning

CO River Raise-Fold Monotone is a specific play combination in Texas Hold'em, describing a scenario where the player in the Cut-Off (CO) position, on a river board that is monotone (all five community cards of the same suit), first raises and then folds when facing a re-raise (such as a 3-bet or all-in) from an opponent.

Applicable Scenarios

This play is often used in the following situations:

• As a bluff: On a monotone board, the CO player may raise with hands that didn't complete a flush (e.g., top pair or middle pair), attempting to force opponents to fold medium-strength hands. However, if the opponent re-raises, it indicates they likely hold a stronger flush or made hand, so folding avoids further loss.
• Thin value raise: When the CO player holds a strong but non-nut hand (e.g., a small flush or straight), believing they can extract value from weaker hands, but upon facing a re-raise, they realize they may be beaten.

Key Considerations

• Opponent tendencies: If the opponent is generally aggressive and more likely to re-raise with strong hands, then a raise-fold is reasonable. If passive, a raise might just get called, leading to a showdown.
• Board texture: A monotone board significantly changes hand strength distribution. For example, when three community cards are suited, a flush becomes a strong hand; five cards of the same suit mean any flush is the nuts.
• Range construction: The CO's raising range on the river should balance value hands and bluffs, and the raise-fold line is typically an extension of a bluff or thin-value play.

Example

Suppose the board is ♠A♠K♠Q♠J♠10 (monotone). The CO holds ♠9♠8 (a flush but not the nut flush) and raises to extract value from worse flushes or pairs. However, an opponent in position re-raises, leading the CO to believe the opponent holds a larger flush (e.g., ♠K♠Q), so they fold.

Notes

• This play requires accurate reads on opponents' ranges; otherwise, you risk being bluffed when value betting or called when bluffing.
• On a monotone board, the nut flush usually never folds, so raise-fold is more common with non-nut hands.