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International Match Points

From Wikipedia, the free encyclopedia

International match points (IMP) within the card game of contract bridge is a measurement for conversion of the absolute contract bridge scores. The total point difference between two scores is compared to a scale ranging from 1 to 24.[1][2]

Revised IMP table effective September 1, 1962[3]
Point difference IMPs Point difference IMPs Point difference IMPs
from to from to from to
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 or more 24
270 310 7 1300 1490 16
320 360 8 1500 1740 17

IMP score is used in competition bridge, including duplicate bridge (including at some online bridge websites),[4] but rarely within any kind of companion bridge, and never if playing rubber bridge.[5]

Tactics at IMPs differ from those of matchpoints and are similar to those of rubber bridge. The declarer's primary objective is to make the contract without jeopardizing it in a quest for overtricks; for the defense it is to defeat the contract without worrying about surrendering overtricks.[6]

References

[edit]
  1. ^ "IMP: International Match Point Scoring - Duplicate Bridge". www.bridgehands.com.
  2. ^ "IMPs and Matchpoints". www.math.cornell.edu.
  3. ^ 2017 World Bridge Federation IMP Table, Law 78
  4. ^ at [1] press play and then on the top right corner, "IMP" and scroll the question mark
  5. ^ MayHem. "Things you might like to know about duplicate bridge" (PDF). omahabridge.org. UNIT 241 Board of Directors.
  6. ^ Manley, Brent; Horton, Mark; Greenberg-Yarbro, Tracey; Rigal, Barry, eds. (2011). The Official Encyclopedia of Bridge (7th ed.). Horn Lake, MS: American Contract Bridge League. p. 421. ISBN 978-0-939460-99-1.