Although the filter is normally set as a result of a search you can add to the existing filter using the Header
search.
Elo ratings
Chess players are given a chess rating to gauge how strong they are at chess. The standard rating system
used in chess is called Elo ratings named after Arpad Elo. A related system is used in tennis, football and
many other sports.
Elo ratings are based on the results of games and ratings of opponents played. The Elo rating system
ranges from 1000 Elo (a complete novice) to 2800 Elo and beyond for the strongest players of all time.
Were a player A to score two points for every one point of player B, then player A would be expected from
this performance to have an Elo rating about 120 Elo points more than player B. As you can see there is a
great difference in chess strength as you go up the ratings.
The ratings can be split into the following broad classes:
Class of Player
Rating Range
World Champion
2800+ Elo
World Championship contender
2700-2800 Elo
Super Grandmaster
2600-2700 Elo
Grandmaster
2500-2600 Elo
International Master
2400-2500 Elo
Master
2200-2400 Elo
Expert
2000-2200 Elo
Class A - Strong club player
1800-2000 Elo
Class B - Club team player
1600-1800 Elo
Class C - Club player
1400-1600 Elo
Class D - Hobby player
1200-1400 Elo
Class E - Beginner/Novice
1000-1200 Elo
Class F - Complete beginner
750-1000 Elo
HIARCS Chess Explorer allows you to set any of these strengths in the play game mode.
ECO opening naming
Chess Informant Inc developed the Encyclopaedia of Chess Openings which is a system of classification for
chess openings into 5 main groups of openings, each of these groups has a 100 different categories of
openings.
HIARCS Chess Explorer can classify openings into their ECO codes and further more name the actual
openings. You can also access openings by name to practice those openings and also the Player Explorer
can classify favourite openings of players and databases.
For reference here is an overview of the ECO codes and opening names:
ยท A00-A99: Flank openings
o A01 Nimzowitsch-Larsen Attack
o A02-A03 Bird's Opening
o A04-A09 Reti Opening
o A10-A39 English opening
o A40-42 Queen's Pawn Opening
o A43 Benoni/Old Benoni
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