河牌圈四bet在彩虹牌面（River 4-Bet on Rainbow Board）
On the river with a rainbow board, the scenario where a fourth bet occurs (i.e., the fourth betting action, counting bets and raises from preflop betting rounds).
Term Meaning
River 4-Bet on Rainbow Board refers to the fourth betting action that occurs on the river, while the board features a "rainbow" texture, meaning the three flop cards are all of different suits (Rainbow). In standard Texas Hold'em betting rounds, Pre-flop, Flop, Turn, and River each constitute a separate betting round. Within each round, the first bet is called a 1-bet, a raise is a 2-bet, a re-raise is a 3-bet, and a third raise is a 4-bet. Therefore, a 4-bet on the river indicates that the round has already seen a bet, two raises, and the third raise is the 4-bet.
Practical Scenario
This situation typically occurs only in deep-stacked, high-variance, or aggressive games. A rainbow board means there is no possibility of a flush draw, so players rely more on made hands, straight draws, or bluffs. A river 4-bet often represents either an extremely strong hand (e.g., nut straight, set or better) or a pure bluff. Since raising actions on the river are rare, the range for a 4-bet is usually polarized.
Notes
- River 4-bets are very uncommon; most players will only make 2–3 bets on the river (i.e., a bet and one raise).
- Pay attention to the betting round counting rules: Different platforms or conventions may refer to the pre-flop betting round as the "first betting round," but typically pre-flop, flop, turn, and river are each counted as separate betting rounds, with the number of raises counted independently within each round.
- A rainbow board simplifies hand reading because it eliminates the possibility of a flush, so a 4-bet is more likely to indicate the nuts or air.
- This term is not a high-frequency term in poker textbooks; it is mostly used in advanced strategy discussions.