IMPs Tournaments – by Michele Leone (First Part)

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IMPs is the abbreviation for International Match Points. An IMP tournament is a Mitchell which assigns points used in duplicate bridge in accordance with the IMP table.

An IMP tournament requires a philosophy of play typical of duplicate bridge, real bridge just to be clear!

Even though it is played in pairs, an IMP tournament is ideal for preparing team tournaments.

 In a 30 table tournament, it’s as if your pair were playing simultaneously against 29 teams.

 In Sweden IMPs have been played for many years with great success. In the USA IMP tournaments are slowly replacing traditional Mitchell tournaments with scores in MP (match points). The IMP is widely used in Internet in the numerous on line tournaments (see BBO for example, where normal matches between pairs with IMP scoring are almost standard).

  Some methods have been suggested to apply the same principle to pairs tournaments; one of these is to compare each result with all the others and then convert all differences to IMPs, in accordance with the table published by the WBF.

 Normally the sum of all  these IMPs is divided by the number of comparisons made, obtaining a score which is more easily understood, and so giving the players an idea of how good, or bad, their score is, because this number indicates how many IMPs were moved in these boards.

 The scoring method we propose (across the field, or cross IMP) is the one used in the famous “Cavendish”,  the most important invitational  international tournament where each pair of players is put up for auction, realizing total prize money of almost  $2 million.

 Tabella IMPs

 

 

Differenza IMP   Differenza IMP   Differenza IMP
da a da a da a
0 10 0 370 420 9 1750 1990 18
20 40 1 430 490 10 2000 2240 19
50 80 2 500 590 11 2250 2490 20
90 120 3 600 740 12 2500 2990 21
130 160 4 750 890 13 3000 3490 22
170 210 5 900 1090 14 3500 3990 23
220 260 6 1100 1290 15 4000 o più 24
270 310 7 1300 1490 16      
320 360 8 1500 1740 17      
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