dougu3a Posted July 21, 2020 Report Share Posted July 21, 2020 Four of us play Casual, Relaxed bridge with IMPs scoring. When you look at the history you can see your score for any hand plus the outcome for a number of other players for the hand . you, or the opposition, are awarded IMPs which typically vary between about 12 and 1. Can anyone p;ease explain to me how these are calculated. Many thanks. Quote Link to comment Share on other sites More sharing options...
paulg Posted July 21, 2020 Report Share Posted July 21, 2020 Your score is imped against every other table that you has played the board. The average of these imp scores is the score shown. A board will be played up to 16 times. So if you make 1NT on board 1 (+90) and everyone else goes one down (-50), you will score +140 (4 IMPs) against every other table for an average of +4.0. Quote Link to comment Share on other sites More sharing options...
Vampyr Posted July 21, 2020 Report Share Posted July 21, 2020 Here is some information about IMPs, including the iMP table. 1 Quote Link to comment Share on other sites More sharing options...
dougu3a Posted July 21, 2020 Author Report Share Posted July 21, 2020 Your score is imped against every other table that you has played the board. The average of these imp scores is the score shown. A board will be played up to 16 times. So if you make 1NT on board 1 (+90) and everyone else goes one down (-50), you will score +140 (4 IMPs) against every other table for an average of +4.0. OK Thanks, but then why are the imps shown not whole numbers? Quote Link to comment Share on other sites More sharing options...
barmar Posted July 21, 2020 Report Share Posted July 21, 2020 OK Thanks, but then why are the imps shown not whole numbers?Because when you divide by the number of tables you can get a fraction. Suppose you score +100, and there are 3 other tables with +140, +100, -100. Your IMP differences are -1, 0, 5, respectively. The total is 4, you divide by 3 tables, that's 1.33. Quote Link to comment Share on other sites More sharing options...
dougu3a Posted July 21, 2020 Author Report Share Posted July 21, 2020 Because when you divide by the number of tables you can get a fraction. Suppose you score +100, and there are 3 other tables with +140, +100, -100. Your IMP differences are -1, 0, 5, respectively. The total is 4, you divide by 3 tables, that's 1.33. Are, right, many thanks, now I'm beginning to understand. Complicated isn't it. Quote Link to comment Share on other sites More sharing options...
Vampyr Posted July 21, 2020 Report Share Posted July 21, 2020 Are, right, many thanks, now I'm beginning to understand. Complicated isn't it. You get used to it. Quote Link to comment Share on other sites More sharing options...
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