Abbreviations used in Pages of Go Tournament Results

This page explains some of the column headings and other abbreviations used in the BGA tournament results pages.

The players game results are shown round by round, with the oponent's "No" and the result coded as follows:

+ Win
- Loss
= Jigo
f Free win (walk over)
d Default loss (no show)
u Unresolved (as in triple ko)
v Void (as when both players fail to show)

Abbreviation	Meaning	explanation
CUSP	Cumulative Sum of Points	As a player wins games, her number of wins increases. The CUSP is the sum of the values that her number of wins has been. E.g. in a three-round tournament she wins two games then loses one, her number of wins goes 1-2-2, summing to a CUSP of 5. But if she lost a game and then won two, her CUSP would be 3.
No	Identity Number	A unique label assigned to each player, often in entry grade order or finishing rank order. This is referenced in the body of the table where it is shown against opponents.
MacM MMS	McMahon Score	Initially this is equal to the player's kyu grade^*, with 1-dan = 0, 2-dan = -1, etc. It is decreased by one (towards a higher grade) for each game that the player wins, and by ½ for each bye.
nk	No Komi	This game was played without komi, because of the disparity in the strengths of the players.
Posn	Position or Rank	When the players are listed in position order, this shows where each player ranked at the end of the event. It is often decided by McMahon score, with one or more of SOS, SODOS and CUSP as tie-breakers. Players with the same position are grouped under the same rank.
Rank or Grade	Grade	The grades which the players gave when they entered the tournament. For British players, dan grades and kyu grades are self-assigned by use of the rating list. Certificates for dan grades are issued by BGA Board (Council) based on best achieved ratings.
SODOS SDS	Sum Of Defeated Opponents' Scores	The total of the final McMahon scores of the opponents that this player beat.
SOS	Sum of Opponents' Scores	The total of the final McMahon scores of this player's opponents.
SUO	Sum of Undefeated Opponents' scores	The total of the final McMahon scores of the opponents that beat this player.
st	Stones	This game was played with handicap stones, because of the disparity in the strengths of the players.
Wins	wins	The number of games won. Byes count as ½ (half).

* Except that it is the same for all players "above the bar" of the tournament. E.g. if the bar is set at 3-dan, then 3-dans and all higher-graded players will have an initial McMahon score of -2.

Last updated Wed Sep 04 2024.
If you have any comments, please email the webmaster on web-master AT britgo DOT org.