伪造（低牌破坏）

Definition and Context

Counterfeit is a term primarily used in lowball poker variants and split-pot games such as Omaha Hi-Lo (8-or-better) and Razz. It describes a situation where a board card (community card) matches one of the cards in a player's hand, thereby downgrading or eliminating the player's low hand. The concept is critical for evaluating hand strength in games where the best low hand (usually A-2-3-4-5 of different suits) competes for half the pot.

How Counterfeiting Works

In typical low hand rankings (ace-to-five low, often with an 8-qualifier), the best low hand uses five unpaired cards ranked A-2-3-4-5. If a player holds, for example, A♥2♣ in Omaha Hi-Lo, and the board shows K♠3♦7♣2♠, the 2 on the board “counterfeits” the player's 2, making it impossible to use both A and 2 for a low hand without a duplicate. The player’s best low now becomes A-3-7-K? but that is not a qualifying low (paired or too high). In Razz, where you draw to the best low, counterfeiting can ruin a drawing hand. Suppose you have (A-2)7 and draw a 2; your hand becomes A-2-7 with another 2, which is no longer a straight or low possibility—you have “counterfeited” your own low draw.

Impact on Strategy

Counterfeiting is a key risk when playing drawing hands in split-pot games. Players must consider not only the cards that improve their hand but also those that could duplicate their hole cards. For instance, in Omaha Hi-Lo, holding A2 sometimes is called a “counterfeit magnet” because the board may pair one of those cards, leaving you with only a high hand. Skilled players avoid overvaluing weak low draws that are easily counterfeited and prefer hands with multiple low cards (e.g., A2, A3, 23) to mitigate the risk. In Razz, when you are drawing, you must anticipate counterfeit cards and possibly change your target low.

Examples

• Omaha Hi-Lo: Hero holds A♠2♣9♦K♥. Flop comes 3♠4♣5♦. Turn is A♦—this counterfeits hero’s A, so the low hand must now use the A on board and the 3,4,5? But with A and 2 in hand, the best low becomes A-2-3-4-5 (using board A? Actually, cannot use two aces; the low is 2-3-4-5 and the board A gives a 6-card low? The exact calculation depends on rules, but the key is that the pair of aces eliminates the wheel possibility.)
• Razz: You start with (A-2)3. You draw a 2 on fourth street—you now have A-2-3-2, which is paired, so your low hand is incomplete and weak.

Related Concepts

• Low Qualifier: In Omaha Hi-Lo, to win the low half, a player must have five unpaired cards 8 or lower. Counterfeiting often knocks a hand out of qualification.
• Nuts: The best possible hand. Counterfeiting can turn the nut low into a non-qualifying hand.
• Scoop: Winning both high and low; counterfeit risk is especially harmful when trying to scoop.