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

IMP difference    Victory Points

   0 -  2            10 - 10
   3 -  6            11 -  9
   7 - 11            12 -  8
  12 - 16            13 -  7
  17 - 21            14 -  6
  22 - 27            15 -  5
  28 - 33            16 -  4
  34 - 39            17 -  3
  40 - 46            18 -  2
  47 - 54            19 -  1
  55 or more         20 -  0