CO位河牌彩虹面偷池（CO River Steal Rainbow）
In no-limit Texas Hold'em, a CO cutoff player bets on the river with a rainbow flop three cards of different suits in an attempt to steal the pot.
Term Analysis
CO (Cutoff) is the position to the right of the dealer in pre-flop action order. Due to its positional advantage (acting last or second-last post-flop), it is often used for Steal attempts. River refers to the final betting round after the last community card is dealt. Rainbow describes a flop where all three cards are of different suits, meaning there is almost no potential for a flush draw.
Strategic Implications
"CO River Steal Rainbow" specifically refers to a bluff by the CO player on the river when the flop is a rainbow texture. Since the rainbow texture blocks most flush draws, the opponent's strong range is typically concentrated on made hands (sets, two pair, etc.) or straight draws. If the CO player has shown no strength on the flop and turn, a river bet may force opponents to fold medium-strength hands such as top pair weak kicker or pocket pairs.
Applicable Scenarios
- Low board connectivity (no straight possibility), e.g., A♠ 7♦ 2♣ rainbow flop, narrowing opponent's range.
- Opponent has a wide pre-flop range and did not resist on the flop or turn.
- CO holds air or weak draws, representing having hit the nuts via a river bet.
Notes
- Consider pot odds and opponent's fold tendency.
- If the flop or turn introduces a flush draw possibility (non-rainbow), this term does not apply.
- Overuse reduces credibility; balance value bets with bluffs.