劫位河牌冷跟注彩虹面（HJ River Cold Call Rainbow）

Term Breakdown

This term consists of four parts, and its meaning needs to be understood by breaking them down:

• HJ (Hijack): The hijack position, which is one seat to the right of UTG+1, typically in the middle-late position.
• River: The river betting round, after the final community card is dealt.
• Cold Call: Usually refers to calling a raise preflop without having invested any dead money. When used on the river, it borrows the preflop concept and generally means a player who was not previously involved in the pot suddenly calls.
• Rainbow (Rainbow board): A flop where all three cards are of different suits, making a flush draw unlikely.

Combined, it describes a scenario: On the river, a player in the hijack position who has not invested any chips earlier (e.g., folded preflop) calls an opponent's bet on a rainbow board. This action is typically considered unconventional because bluffing is less common on a rainbow board, and a cold call suggests the player likely holds the nuts or a near-nut hand.

Usage Note

This term is not a standard poker term but a combination of several independent concepts. In actual communication, it is recommended to describe each element separately to avoid ambiguity.

Related Strategy

• On a rainbow river board, a cold call usually represents a very strong made hand, as the rainbow texture blocks many draws.
• When used as a bluff, cold calling is rare because opponents are more likely to fold on a rainbow board.