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@Nimzo - I said to post links in case no one wanted to answer, I guess I wasn't sure if it was a stupid question. When I googled it I got lists of ECO code openings - and still wondered why it stopped at 500. I do alot of research over the net, and have no problems with SE's, try googling: Why does ECO Codes stop at 500 - maybe not for you, but I get absolutely nothing with useful information.
@Shepi- No, Alekhine is the most greatest, awesomest ever!
Alekhine may be the greatest, awesomest ever!, but I believe the question was who is the Bestest Greatestest Most Awesomest ever!?
THe ECO classification is a little cumbersome. Maybe it's time to design something a little more streamlined.
I think F's might be added if some currently unorthodox openings develop enough theory?
Rooperi take another look at what the 'A' codes cover.
What do you propose? A system based upon pawn structure after 6 moves? Numeric hash value based upon the position? Maybe something like soundex but for chess positions, where similarity to other known values determines the number along with a degree of deviation? Anyone have an idea? Nobody likes ECO, but no one has proposed a better system.
Nobody likes ECO, ...
It is clear and logical.
Also, it is comprehensive.
The only classification I can think of with any ambiguity at all is the Catalan (E00 - E09), which is essentially a "D" opening which arises normally out of the 1 ...Nf6 & 2 ...e6 move order. But wherever it was placed would be a bit out of place.
I think it would be better to classify openings based on their inherent pawn structure. I think it would make it easier to learn new openings.
Chess is a search for truth, not a quest for helping beginners. The ECO system, as designed, facilitates the search for truth.
I'm creating a blog about chess and tech. I just added a post about ECO codes. I'm going to be creating one on searching databases for key information. Let me know what you think of the ECO post. https://chesstech.wordpress.com/2017/09/04/eco-encyclopedia-of-chess-openings/