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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.
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IMPs How are they calculated
#2
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Posted 2020-July-21, 09:22
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.
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.
#3
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Posted 2020-July-21, 09:47
Here is some information about IMPs, including the iMP table.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones -- Albert Einstein
#4
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Posted 2020-July-21, 10:50
paulg, on 2020-July-21, 09:22, said:
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.
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?
#5
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Posted 2020-July-21, 10:54
dougu3a, on 2020-July-21, 10:50, said:
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.
#6
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Posted 2020-July-21, 12:12
barmar, on 2020-July-21, 10:54, said:
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.
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.
#7
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Posted 2020-July-21, 12:19
dougu3a, on 2020-July-21, 12:12, said:
Are, right, many thanks, now I'm beginning to understand. Complicated isn't it.
You get used to it.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones -- Albert Einstein
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