Bridge maxims

Bridge maxims

This article includes a miscellany of short "laws", "rules" and rule of thumb advice (in alphabetical order). Each has some merit but none is always true:

Maxims

Bidding

* If you have a choice of reasonable bids and one of them is 3NT, then bid it. Known as "Hamman's Law"; devised by Bob Hamman and published among other places in "English Bridge", June 2006, page 19.
*Prefer majors to minors. Bid a major suit before a minor suit. They can overbid opponents at the same level, and score higher.
*Prefer length to strength. A long suit, even if weaker, is often ultimately more powerful and desirable as a contract, than a short suit, however good, because long trumps will usually make tricks in the end, and they allow a greater level of control during the game.
*With a misfit bid cautiously; with a good fit be bold. Avoids chasing a poor contract with a misfit, but enables a surprisingly high contract with a good fit.

Card play

Leads, signals and discards

*If in doubt, lead a spade. This applies to NT contracts and works on the assumption that declarer or dummy would likely bid spades if they had them. (Because it is axiomatic to consider a major suit fit if one exists, before settling on no trumps, and spades as the highest ranked suit are the suit which would have been easiest to bid had a fit existed.)

Declarer

*Eight ever, nine never. This refers to guidance for the common situation where declarer has eight or nine cards in a suit including the Ace and King, and is trying to choose a strategy for drawing the opponents' queen without losing a trick.

There are two strategies - the finesse, which is 50-50 in both cases, and the drop, which relies upon the opponent who has the queen having only one or two (but not more) cards in the suit, and becomes more likely to succeed the more cards in the suit are held.

Lacking any further information, the maxim suggests that optimal strategy is to finesse when holding a total of eight cards in the suit, and don't finesse but play the two top cards to cause the queen to be "dropped" if nine cards are held.

Advanced players will often try to gain further information or deduce which hand holds the queen, before choosing their play. The difference in percentages is so close that the slightest inference might influence a player to chose to finesse or to drop with nine cards.

"Eight ever nine never" refers only to when declarer can afford no loser in the suit: there are many more things for him to think about when declarer can afford a loser. For example, if the finesse would land in the hand of the dangerous opponent who can give the other opponent a ruff that declarer can't afford, with eight cards he might have to play for a "drop" by playing the ace and king then a small one to the jack. Even if the finesse would have lost, now the dangerous opponent can't give his partner a ruff, because he can't have any more trumps left (if the queen didn't fall under the ace and king, the potential ruffer can't have more than two cards in the suit).

Defenders

Either side

*Cover an honour with an honour. May set up a trick for partner, or prevent the opposition making a 'free' extra trick. Example: Suppose declarer (South) leads the Queen of a suit, dummy (North) has the Ace, and the hand in between (West) has the King. If West fails to play the King over the Queen, declarer will allow the Queen to make a trick, and then the Ace will also make a second trick. By playing the King, declarer must use the Ace and Queen on the same trick, and cannot make a second trick with these cards. In addition, partner may now turn out to have the Jack doubleton, which will now be a master. The same thing happens with partner having ten to three cards or 9 to 4 cards. Their ten or 9 will never make a trick if you don't cover.

However, it is best to use your judgment: if the bidding or previous play suggests that partner can't have the jack, ten or 9, or enough cards for this card to be promoted (e.g. if he can only have two cards and you know declarer has the jack, his ten will still fall under one of declarer's cards whether you cover or not) then there is no point covering, as this will only help declarer by telling him where an important card is.

*Play into weakness and play through strength. Two versions on a similar theme: Gives partner more opportunity to take advantage of possible finessing situations (since partner will play "after" the strong hand). Likewise it may give partner more opportunity for tricks, or to win with a lower card, if the last hand (after he/she plays a card) is known to be weak in the suit played. By leading into strength, you are finessing your partner (he has to play before the strong hand).
*Second hand plays low. Prevents wastage of useful cards. This is because your partner may be able to win the trick with a low card, and you don't accidentally finesse yourself. However, if you know partner can't possibly have a card capable of winning the trick and there's no reason why you don't want the lead or want the 1st player to remain on lead, don't play 2nd hand low.

*Third hand plays high. Prevents opponent winning a trick cheaply and may help partner. This only applies if there will be a choice of cards to play for 4th player (silly to play your king when 4th player has a singleton ace!) and there is a possibility of promoting something for your partner. For example, he might have three cards with the jack, and 4th player has the ace and the queen. If you play your king, 4th player has to play the ace, and now the queen can't drop partner's jack: it has been promoted.


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