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1. |
Introduction |
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The objective of this
document is to clarify the policies and procedures of
the Mid-Gauteng Chess Union Merit system.
A merit system is to
be used to determine a ranking system for all active
Mid-Gauteng Chess Union players to apply in the
selection of teams and allocation of awards. As
mandated the system should be mathematically consistent,
transparent, fair and prove integrity.
The merit system is
aligned to incentivising
increased activity and therefore discriminates against a
lack of activity. A chronological weight is applied to
recognise development of the player in the current
measured period. |
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1.1 |
Abbreviations &
Descriptions |
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1.
2.
3.
4.
5.
6. |
RP
ARP
AgeI
Bye
Default
Tournament
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–
- -–-
- |
Performance Rating
Adjusted Performance
Rating
Age Inflation
As per the swiss or
Round Robin system definition
As per the swiss or
Round Robin system definition
FIDE or Chessa Rated
Normal Chess Tournament |
|
1.2 |
Applies to:
|
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· All
active mid-Gauteng Chess Union Members |
|
2. |
Basis of calculation
|
| |
1. |
The main merit system will be based on a ranking system
of the sum of the best performance ratings in
tournaments in the current year with straight line
inflation depending on age group. The premise of the
system is similar to the well understood Grand Prix
system as displayed by Chessa and FIDE barring the
inflationary aspect. |
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2. |
Only
the best 2 tournaments will be used up to the 1st
Inter-Union of the year. Thereafter 3 tournaments will
be used except for the selection of the SAJCC U8 – U14
teams which will be done using the following equation:
The merit score of players who are not able to attend
the closed and that have been excused by the selection
committee will be determined using only the best 3
tournaments. |
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3. |
Inflation of RP will be done using the following
constants: |
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|
3.1
Age
group U8 – U10 – 1.5% per month.
3.2
Age
group U12 – U14 – 1% per month.
3.3
Age
group U16 – Open – 0.5% per month. |
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|
Inflation is based on the assumed reduction in the
learning curve with age and is referred to as AgeI. |
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4. |
In
the case where a player is not awarded a rating yet the
player will be awarded a provisional rating.
Provisional ratings will be be applied per age group in
line with the following: |
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|
4.1
U8 - 700
4.2
U10 - 900
4.3
U12 - 1100
4.4
U14 - 1300
4.5
U16 Open - 1500 |
|
3. |
Equation Elements |
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1. |
Performance Rating (RP): |
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|
1.1 Performance
ratings should be determined using the FIDE RP formula:
 |
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1.2
The following
criteria applies to performance rating: |
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|
i)
Points
earned by virtue of a bye or default will be omitted
from the formula.
ii)
At
least 4 valid games should be included in the
performance calculation of one tournament. Less valid
games
will nullify
the result of the tournament. |
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2. |
Adjusted Performance Rating (ARP): |
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|
2.1
ARP is
determined by adding an AgeI percentage to the RP based
on the month of year. The formula is:
 |
|
4. |
Criteria valid
tournaments
|
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1. |
All the rated tournaments are merit tournaments and are
marked as such on the calendar. |
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2. |
All other tournaments can be presented to the
GM-committee for approval as a merit tournament, should
it achieve the following criteria: |
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|
2.1 Data
must be supplied to GM in the Swiss Arbiter programme
format or as accepted by CHESSA
2.2 The
tournament must be CHESSA registered and rated.
2.3 There
must be at least 5 players in a section for Round Robin
and 8 for Swiss tournaments.
2.4 Minimum
time schedule is 61/61 (Normal Chess)
2.5 Minimum
of 5 rounds
2.6 Personal
and contact details of all players must be available
2.7 Ratings
used in tournament for pairing purposes are not older
than 2 publications prior to the start date of the
tournament. |
|
5. |
Validity and
consistency of system
|
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1. |
The system is dependant on a stable rating environment
where statistical consistency can be reasonably proven.
It is based on the CHESSA standard for calculation
ratings as published December 2009 and will be affected
by changes on the method. It is therefore required to
re-evaluate the system should any of the following
elements change within the CHESSA rating formulae: |
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|
1.1
New ratings are determined using a minimum of 12 rated
games.
1.2
The K factor for ELO calculation does not exceed 30 for
new players.
1.3
General
alignment is kept to the FIDE ELO system. |
|
6. |
Process for
calculating merit scores |
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1. |
Check readability, consistency and validity of submitted
tournament data. |
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2. |
Substitute provisional ratings per age group. |
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3. |
Normalise score to exclude Bye and Default games. |
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4. |
Determine performance rating per player. |
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5. |
Append merit point per player to main merit database. |
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6. |
Submit merit calculation of tournament to merit
committee for ratification. |
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7. |
If
ratified, publish data. |
|
7. |
Merit Committee
|
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1. |
A
merit committee should be established with a chairperson
and at least 2 other from the union. The merit
committee’s function is to: |
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|
1.1 Calculate
and audit the merit score of the union.
1.2 Interrogate
resultant merit scores and test against the intent of
the merit system.
1.3 Make
suggestions to improve the system. |
