What is your opinion on the chess opening Van't Kruijs opening? - Quora

Chess - Play and Learn - Apps on Google Play

Quantifying human performance in chess

Lichess Study: The Only Guide You'll Ever Need - The School Of Rook

How to Study Openings Using Chessbase

5 Best Electronic Chess Games - HobbyLark

I'm building a website to find any chess games from any opening in any major tournament. I'm about to hit 900,000 total games. What do you guys think? : r/chess

Visit 365chess.com - Chess Games Database Online - 365Chess.com.

You've heard of the Bongcloud, you've had your Mbembes reversed, but have you seen the final boss of chess openings? : r/AnarchyChess

Chess - Play and Learn 4.5.13-googleplay APK Download by Chess.com - APKMirror

Opening repertoire study with spaced repetition (+ database and game collections) : r/chess