CHAPTER VIII
The Score 

LAW 78 - METHODS OF SCORING 

A. Matchpoint Scoring

In matchpoint scoring each contestant is awarded, for scores made by different contestants who have played the same board and whose scores are compared with his: two scoring units (matchpoints or half matchpoints) for each score inferior to his, one scoring unit for each score equal to his, and zero scoring units for each score superior to his.

B.  International Matchpoint Scoring

In international matchpoint scoring, on each board the total point difference between the two scores compared is converted into IMPs according to the following scale:

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

C. Total Point Scoring

In total point scoring, the net total point score of all boards played is the score for each contestant.

D. Special Scoring Methods

Special scoring methods are permissible, if approved by the sponsoring organisation. In advance of any contest the sponsoring organisation should publish conditions of contest detailing conditions of entry, methods of scoring, determination of winners, breaking of ties, and the like.