A 4-3 trump fit is known as a "Moyesian" fit after an expert who liked to play such hands, even with fewer trumps than the standard eight card fits.

Their main downside is that with six cards in the opponents' hands, one opponent would occasionally have a longer (five or six card) trump suit than the declarer. This would lead to control problems, and potentially to large sets.

In duplicate bridge, particularly matchpoints, the frequency of the wins is more important than the size of the wins. In my club, at least, players that bid good Moyesian fits (those with good high card control) tend to do well in the scoring. The boards on which they lose to long opposing suits don't hurt them much because the size of the losses don't matter as much as their rarity.

Would playing Moyesian fits generally be a better idea in duplicate, given the differences in scoring between rubber and duplicate bridge?

  • 2
    Differences in declarer/defender skill is crucial here. Some partners I am much happier to put in Moysians than other partners. Mar 16 at 13:25
  • @AlexanderWoo: A key skill for "Moyesian" play is ducking, rather than ruffing in hand so that the ruff of an opposing long suit eventually takes place in the short trump hand. A second key skill is having extra high card points in reserve when you are bidding with one less trump than normal.
    – Tom Au
    Mar 16 at 18:31
  • @TomAu: More fundamental to successful play of a Moysian fit: Be a superb declarer, as Alphonse "Sonny" Moyse Jr. himself was. Generalizing that "play of difficult hands requires not ruffing in the long hand" would presuppose that difficult hands are now easier. Not true, as perhaps a cross-ruff is the correct line. Barry Crane, like Moyse, was a proponent of 4-card major openings; and likewise was unconcerned at ending up in the occasional 4-3 fit in consequence. Also, do you mean Match Points in the title instead of Duplicate? IMP play is also "duplicate". Mar 17 at 14:05


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