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The '''Chess'n Math Association''' (or '''Chess and Math Association''') is a non-profit organization dedicated to bringing chess into Canadian schools. Founded in 1985 by [[Larry Bevand]], who still serves as its Executive Director, it bills itself as "[[Canada]]'s National Scholastic Chess Organization", although it is not affiliated with the [[Chess Federation of Canada]], Canada's official [[FIDE]]-recognized chess organization. Chess'n Math runs hundreds of tournaments for kids [[K-12]] across Canada, including an annual Canadian Chess Challenge. These tournaments are rated according to its own rating system. It also offers chess lessons and camps, produces a magazine ''Scholar's Mate'', and runs the ''Strategy'' game stores located in [[Montreal]], [[Ottawa]] and [[Toronto]]. CMA has sponsored several chess futurity events, to provide international title norm opportunities for promising young Canadian players.
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==Publications==
*Leçons d'échecs du Tournoi International de Montréal 2001 by IM [[Jean Hébert]]
*Le Livre du Tournoi International de Montréal 2002 by IM [[Jean Hébert]]
*Chess Strategy for Kids by Jeff Coakley
*Winning Chess Exercises for Kids by Jeff Coakley
*Winning Chess Puzzles for Kids by Jeff Coakley
*Nick's Best by IM [[Lawrence Day]] about IM [[Bryon Nickoloff]]
* Chess on the Edge by GM [[Yasser Seirawan]] and FM Bruce Harper, the games of GM [[Duncan Suttles]] in three volumes.
 
==Rating System==
 
The Chess 'n Math rating system does not differ from that of the FIDE a lot in the way that the formula is derived, but the variables are different. According to their website,<ref>[http://www.chess-math.org/ratings/calculat.htm Calculating<!-- Bot generated title -->]</ref> the formula is as follows, for one tournament or multi-game event:
 
<math>R_n = R_o + (W-L) \times 16 + D * 0.04\ </math>
 
: Where W is the number of wins, L is the number of losses, and D is the difference in rating (your opponent's minus yours), with a cutoff value of ±350.
 
As it appears, the number of "expected wins" for one game is equal to the difference in rating divided by 800, plus 0.5. The cutoff value of ±350 makes the limits of these "We" values, 15/16 and 1/16 respectively. A person can also win bonus points equal to:
 
<math>Bonus = (R_n - R_o - (18 + 2 \times G));\ \ \ min(Bonus)=0</math>
 
: for doing extremely well in a series of games. (G stands for number of games played).
 
As of September 1, 2007, a "bonus" of 2 is added to every game won, up to a maximum of 50 games.
 
== References ==
 
<references/>
 
==External links==
* [http://www.chess-math.org/ The official website]
* [http://chesstalk.com/boutique/store/ Strategy Games]
 
[[Category:Chess organizations]]
[[Category:Chess in Canada]]
[[Category:1985 in chess]]
[[Category:Organizations established in 1985]]
 
{{Chess-org-stub}}

Latest revision as of 13:14, 5 May 2014

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