CO河牌干燥牌面诈唬（CO River Bluff Dry）

Meaning

CO River Bluff Dry is a combined term describing a bluff on the river (River) by the player in the Cutoff (CO, the position to the right of the button) on a dry board. A dry board refers to a public board lacking obvious draws (such as flush or straight draws), for example, a rainbow board or low connected cards. This bluff leverages the fact that opponents typically hold a weaker range on dry boards, using a bet to represent a strong hand (such as top pair or better) to force opponents to fold.

Typical Scenario

When both sides have shown weakness on the flop and turn, for example, preflop the CO raises, and both blinds call; the flop comes K♠7♦2♣ (dry, no flush or straight draws), and both check; the turn is 3♥, the CO bets, and the blind calls; the river is 9♠, still a dry board. If the CO then shoves or makes a large bet, this can be seen as a typical example of a CO River Bluff Dry.

Strategic Logic

• Range Advantage: The CO has a wider range preflop, potentially including top pairs or overpairs, making it easier to represent strong hands on a dry board.
• Opponent Range: Blinds usually hold middle or bottom pairs on dry boards, rarely with draws, making them more susceptible to large bets.
• Success Rate: On dry boards, opponents have a higher threshold for calling, so bluff success rates are relatively high, though player type and stack sizes must be considered.

Notes

Dry boards can also be seen by opponents as a good opportunity for slow-playing, so adjustments based on opponent tendencies are necessary. Against a "calling station," such bluffs should be reduced. Additionally, river bet sizes should align with value bets to avoid being readable.