关煞位河牌彩虹面漂浮（CO River Float Rainbow）

Term Explanation

CO River Float Rainbow combines multiple poker terms to describe a specific play strategy.

• CO stands for Cutoff, the position to the right of the dealer, which typically offers positional advantage post-flop.
• Float refers to calling on the flop or turn with a hand that has no made hand or draw, intending to steal the pot on a later street; also known as "floating" or "floating call."
• River is the final betting round card.
• Rainbow means the flop or turn consists of three cards of different suits, eliminating flush draw possibilities, reducing bluff threats; on the river, a rainbow means the opponent is less likely to have completed a flush.

Strategic Background

This play typically arises when the flop is a rainbow board with a dry texture (e.g., no straight draw possibilities). In the cutoff position, the player calls an opponent's bet with air or weak draws, aiming to bluff on the river by exploiting the opponent's weakness or changes in the board. The key is that the river card completes the rainbow (i.e., its suit differs from the previous cards), making the opponent more likely to interpret your action as a busted flush draw turned bluff.

Conditions for Execution

• Opponent's flop c-bet range is wide, and they are prone to folding on the river.
• Player has a tight-aggressive image, capable of representing value hands.
• The board texture supports a credible story (e.g., the river completes a straight or brings a high card).

Notes

This play requires precise opponent reads and careful stack depth calculations. If the river does not complete the rainbow and the opponent shows strength, abandon the bluff early. In practice, overusing this strategy can lead to opponent adjustments.