rating 2011

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FIDE

Rating Regulations

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FIDE Rating Regulations

Any change of these regulations will come into effect on 1st July of the year

following the decision by the General Assembly.For tournaments, such changes will apply to those starting on or after that date.

In principle, all important events should be rated.

All top level tournaments may be rated by FIDE even if no rating report is

submitted by the federation of the territory in which the event is held.

All official FIDE tournaments, as listed in the FIDE Handbook, are always rated.

The organiser is responsible for sending the results and is also responsible for

the fees.

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Tournaments to be rated must be pre-registered by the federation that will be

responsible for the sending of results and rating fees

The tournament must be registered one month before the tournament starts.

The right is reserved not to rate a specific event. The Chief Organizer of the event

has the right to appeal to the Qualification Commission. Such an appeal must be

made within seven days of communicating the decision.

The Qualification Commission Chairman may refuse to register an event. Also he

may allow an event to be rated which has been registered less than one month

before the tournament starts.


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Rating floor referred to in the following text is the minimum rating to be

published,

after 1.7.2009 the floor will be 1200.


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Minumum playing time in FIDE B.02.1.0

a minimum of 120 minutes per player, if one of the players is rated 2200 or more

a minimum of 90 minutes per player, if one of the players is rated1600 or more a minimum of 60 minutes per player, if all the players are rated1600 or lower Where a certain number of moves is specified in the first time control, it shall

be 40 moves


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Play must take place according to the FIDE Laws of Chess.

The federation may have minor deviations from the Laws of Chess,

if approved by the Technical Commission.

not more than three rounds per day and

a total playing time of no more than 12 hours is allowed


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a period of not longer than 90 days

leagues are rated if they last for more than 90 days

ratings used are the ratings at the start of the tournament

or if the games are reported period by period (or round by round),

the actual ratings at the time of the game may be used

The option must be chosen before the start of the first round

Duration of an event


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whether these occur because of forfeiture or any other reason, they

are not counted

any game where both players have made at least one move will be

rated

Unplayed games


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If an unrated player scores zero or half in in his first event, his score and that of his

opponents against him are disregarded..

But if the unrated player has previously achieved a rating performance above the

rating floor, then this result is included in computing his overall rating.

The results in events involving preliminaries and finals or play-offs

may be pooled

Composition of a tournament B.02.6.0


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In a round robin tournament at least one third of players must be

rated


in a national championship played as a round robin at least 3 men (or 2 women

in women tournaments) must be rated before start

if the event has less than 10 players, at least 4 must be rated

in a double round tournament with unrated participants, there must be at least

6 players, 4 of whom must be rated


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In the case of a round robin tournament where one or more games are

unplayed, the results of the tournament must be reported for rating as if

for a Swiss system tournament



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In a swiss or team event:


and the rating based on the tournament result at its conclusion be above the

rating floor

For an unrated players performance to count he must play at least

three games against rated opponents

score at least 1 point


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In a swiss or team event:


for rated players, all games against rated opponents are counted


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where a match is over a specific number of games, those played

after one player has won shall not be rated


matches in which one or both of the players are unrated shall not be rated


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FIDE ratings are established six time a year

1 January - for tournaments starting 1 January to 28/29 February

1 March - for tournaments starting 1 March to 30 April

1 May - for tournaments starting 1 May to 30 June

1 July - for tournaments starting 1 July to 31 August

1 September - for tournaments starting 1 September to 31 October

1 November - for tournaments starting 1 November to 31 December


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the following data concerning each player whose rating exceeds the floor are shown:

FIDE title

Federation

current Rating

ID Number

Number of games rated in the rating period

Year of Birth

Gender

and the current value of K for the player


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the closing date for tournaments for a list is 7 days before the date of the list

tournaments ending before or on that day are rated on the list

this rule is not valid for the World Championship, the World Cup, the Olympiad and

the Grand Prix Tournaments


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A rating for a player new in the list is published if:

If based on results from round robin tournaments, a minimum of 9 games

If based on results from other tournaments, a minimum of 9 games against

rated opponents

the condition of a minimum of 9 games need not be met in one tournament:

results from other events, played within rating periods of not more than two

years, are pooled to obtain the initial rating


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the rating is at least the rating floor

the rating is calculated using all his results as if they were played in one

tournament,

but not published until he has played at least 9 games,

then using all the rating data available


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if based on results obtained in the Olympiad, a Continental Team

Championship or World Team Championship, a minimum of 7 games

if a player is a member of the IBCA, ICSC or IPCA, a minimum of 7 games


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Players who are not to be included on the list

Players whose ratings drop below the floor are listed on the next list as 'delisted'.

Thereafter they are treated in the same manner as any other unrated player.

unrated titled players are published in a separate list concurrently with the

list of rated titled players


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inactive players are not included on the list

but nonetheless are considered rated at their most recent published rating for

rating and title result purposes

his name is then flagged i in the alphabetical section of the rating list and

removed from the national federations lists which contain only active players

a player is considered to be inactive if he plays no rated games in a one

year period


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a player regains his activity if he plays at least one rated games in a period and

he is then listed on the next list

for the purposes of the FIDE rating list ranking of top players,

a player who is inactive over a 12 month period will no longer

appear on the top list.


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Monthly Rating List

The Qualification Commission will move to monthly rating lists from 1 July

2011.

The list published on the first day of the month shall be effective between

the first and the last day of that month.


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FIDE ratings are based on the tables 8.1.a und 8.1.b from FIDE Rating Regulations

table 8.1.a = table of conversion from percentage score p into rating

differences dp

for a zero or 1.0 score dp is necessarily indeterminate but is shownnotionally as 800

table 8.1.b = Table of conversion of difference in rating D into scoring

probability PD for the higher H and the lower L rated

player respectively

The working of FIDE Rating

system

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If an unrated player in his first event scores less than 1 point, or

plays fewer than 3 rated opponents, or his performance rating is

below the rating floor, his score in that event is disregarded

Determining the Rating of a previously unrated player

In subsequent events all results, even a zero score, or fewer than 3 games against

rated players, are accumulated to his initial rating.


system

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The Rating Rn which is to be published for a previously unrated player is then

determined as if the new player had played all his games so far in one tournament.

The initial rating is calculated using the total score against all opponents


system

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Ru = first rating of a player

Ra = rating average of opponents

dp = see table 8.1.a

Determining the Rating of a previously unrated player in

swiss or team tournaments

if the score is more than 50%, then Ru = Ra + 15 for each half point scored over 50%

if the score is 50%, then Ru = Ra

if the score is less than 50%, then Ru = Ra + dp


system

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The results of both rated and unrated players are taken into account Determine the average rating for unrated players

Rar = average rating of rated players

dpa = average of dp of rated players

n = number of opponents

Ra = Rar - dpa x n/(n+1)


round robin tournaments (1)


system

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round robin tournaments (2)

if the score is 50%, then Ru = Ra

if the score is more than 50%, then Ru = Ra + 15 for each half point scored over 50%

if the score is less than 50%, then Ru = Ra + dp x n/(n+1)


system

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Where a players first result is less than the FIDE rating floor at the time of

the event, the result is ignored


Rn for the FIDE Rating list (FRL) is rounded off to the nearest 1 or zero. 0.5 is

rounded up

If an unrated player receives a published rating before a particular tournament in

which he has played is rated, then he is rated as a rated player with his current rating,

but in the rating of his opponents he is counted as an unrated player.


system

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3 games in a tournament against rated players with average rating of 2220,score 1 / 3,

then in another tournament 5 games against rated players with the average

of 2150, score 3 / 5,

and then in a third tournament 4 games against rated players with average

rating 2200, score 2 / 4.

Example for calculating the Rating of a previously unrated player

The players initial rating is calculated as if he had played 12 games with ascore 6 / 12

Ra of all opponents is (3 x 2220 + 5 x 2150 + 4 x 2200) / 12 = 2184

The result is 6/12, it is half a point over 50 percent.

Rn is 2184 + 15 = 2199


system

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All rating changes in FIDE are calculated game by game.

Determining the rating change for a player (1)


system

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For each game played against a rated player, determine the difference inrating between the player and his opponent, D.

If the opponent is unrated in round robin tournaments, then his rating is determined

at the end of the event, provided the player meets the requirements of 8.2.1:

- at least 1 point

- at least 3 rated opponents

- performance not lower than rating floor.

The rating of unrated players obtained from earlier tournaments is ignored.


system

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Difference of rating

A difference in rating of more than 400 points will be counted for

rating purposes as though it were a difference

of400 points


system

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Use table B.02.8.1.b to determine the players score probability PD.

R = score - PD.

For each game the score is 1, 0.5 or 0.

R x K = the Rating change for a given tournament, or rating period.

The new rating is rounded off to the nearest 1 or 0.

0,5 is rounded up.


system

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Reporting procedures

The results must be submitted using the FIDE rating server and TRF fileswithin one month after end of the tournament.

Results of all international competitions must be submitted for rating unless the

original invitations have made it clear the event was not to be FIDE rated.

The chief arbiter must also announce this to the players before the tournament

starts.


system

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Many thanks for your attention

rating 2011

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