Premier Pairs is played on the Fourth Tuesday of each month in one half of the club. Normal club competition takes place in the other half of the room. The various methods of qualifying for entry to the Premier Pairs are defined in the rules. A copy of the rules can be viewed in PDF .
Challenge Pairs is normally played on the Second Tuesday of each month. IMP scoring is used for the Challenge Pairs. The format has changed recently so that the whole room will play in the Challenge Pairs and there are wine prizes for the winning pair.
Hint: At IMP scoring you want to avoid the big minus scores, and bid your games to get the bonus. At MP scoring, however, you need to fight for every point, choosing the highest scoring contract and often going for risky overtricks.