按钮位河牌四次下注成对（BTN River 4-Bet Paired）

This is a relatively uncommon compound term, composed of position (BTN), action round (River), number of raises (4-Bet), and board texture (Paired).

Term Breakdown

• BTN: Button, the seat with the greatest positional advantage in Texas Hold'em, acting later than other players.
• River: The river round, the final betting round after all five community cards have been dealt.
• 4-Bet: The fourth bet. Preflop, it usually refers to the fourth raise (e.g., someone opens, someone 3-bets, another player 4-bets). However, on the river, where betting rounds are limited, a 4-bet implies three previous bets (e.g., flop bet, turn bet, river raise, etc.).
• Paired: Refers to a board containing at least one pair (i.e., at least two cards of the same rank).

Typical Scenario

This term is often used to describe an aggressive river strategy: the button player re-raises on the river when the board is paired. This bet typically represents either a full house or a bluff exploiting the paired board. Since a fourth bet on the river is extremely rare (usually a maximum of three bets), this term is also sometimes misused to describe a preflop 4-bet followed by a paired board.

Strategic Implications

(The following is an illustrative explanation, not a reliable consensus.) If a BTN River 4-Bet Paired occurs, it often indicates that the BTN player believes the opponent's range is weak, and the paired board blocks the completion of some straight or flush draws. However, one should be cautious when using this term in practice, as it is not a standard hand history term.