How important is opening( Opening can increase up to 150 elo) - Chess Forums

Some tests in chess engine testing showed that good opening book can increase rating +100 to 150 ( depends on depth of opening book). Today I saw testing "Bong cloud"(the worst opening) among top engines. After about 12 games, data show that Bong cloud decrease the engine rating up to 400 elo .( Top

Stop the smurfs! Ranked matchmaking should be based on your highest ELO, not current - #19 by Davyman3583 - II - Discussion - Age of Empires Forum

Tilted from 1500 to 1200, I give up. - Chess Forums

5 Awesome Chess Webs To Train Chess Online - Alberto Chueca - High Performance Chess Academy

1 Year Membership - Killer Chess Training

Petrov Defense: Opening Guide for White & Black - Chessable Blog

weak club player

Best Beginner Chess Opening After 1.e4 (Aggressive & Universal)

Numerot's Blog • Numerot's Chess Guide •

1 Year Membership - Killer Chess Training