International Match Points
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.{{cite web|url=https://www.bridgehands.com/I/IMP.htm|title=IMP: International Match Point Scoring - Duplicate Bridge|website=www.bridgehands.com}}{{cite web|url=http://www.math.cornell.edu/~belk/impmp.htm|title=IMPs and Matchpoints|website=www.math.cornell.edu}}
| class="wikitable" style="float:left; margin-top:10px; margin-right:10px;"
|+ Revised IMP table effective September 1, 1962[http://www.worldbridge.org/wp-content/uploads/2017/03/2017LawsofDuplicateBridge-paginated.pdf 2017 World Bridge Federation IMP Table, Law 78] !colspan="2"|Point difference | rowspan="2"|IMPs | rowspan="11" style="background:none"|
!colspan="2"|Point difference | rowspan="2"|IMPs | rowspan="11" style="background:none"|
!colspan="2"|Point difference | rowspan="2"|IMPs | |||
| from||to||from||to||from||to | ||||||||
|---|---|---|---|---|---|---|---|---|
| align=center
|0 | 10 | 0 | 370 | 420 | 9 | 1750 | 1990 | 18 |
| align=center
|20 | 40 | 1 | 430 | 490 | 10 | 2000 | 2240 | 19 |
| align=center
|50 | 80 | 2 | 500 | 590 | 11 | 2250 | 2490 | 20 |
| align=center
|90 | 120 | 3 | 600 | 740 | 12 | 2500 | 2990 | 21 |
| align=center
|130 | 160 | 4 | 750 | 890 | 13 | 3000 | 3490 | 22 |
| align=center
|170 | 210 | 5 | 900 | 1090 | 14 | 3500 | 3990 | 23 |
| align=center
|220 | 260 | 6 | 1100 | 1290 | 15 | colspan="2"|4000 or more | 24 | |
| align=center
|270 | 310 | 7 | 1300 | 1490 | 16 | colspan="3"| | ||
| align=center
|320 | 360 | 8 | 1500 | 1740 | 17 | colspan="3"| |
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IMP score is used in competition bridge, including duplicate bridge (including at some online bridge websites),at [https://www.sobridge.com/] press play and then on the top right corner, "IMP" and scroll the question mark but rarely within any kind of companion bridge, and never if playing rubber bridge.{{cite web|url=http://www.omahabridge.org/Library/mh_Whole_pamphlet.pdf|author=MayHem|publisher=UNIT 241 Board of Directors|title=Things you might like to know about duplicate bridge|website=omahabridge.org}}
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.{{OEB|7|421}}