The 20-40-40 rule in chess is a rule for players having a below International Chess Federation (FIDE) ranking of 2000 (below Chess Expert level) and it states that 20% of your study should be dedicated to openings, 40% to the middlegame, and 40% to the endgame.<ref>[https://wegochess.com/20-40-40-rule-in-chess-an-efficient-approach/ 20/40/40 Rule in Chess: An efficient approach], Wegochess.com</ref><ref>[https://www.chessable.com/blog/fastest-way-to-learn-openings/#:~:text=What%20is%20the%2020%2040,and%2040%25%20to%20the%20endgame. The Fastest Way to Learn Chess Openings]</ref><ref>[https://www.chess.com/forum/view/general/10-steps-for-getting-good-at-chess-fast 10 Steps For Getting Good At Chess Fast]</ref> | The 20-40-40 rule in chess is a rule for players having a below International Chess Federation (FIDE) ranking of 2000 (below Chess Expert level) and it states that 20% of your study should be dedicated to openings, 40% to the middlegame, and 40% to the endgame.<ref>[https://wegochess.com/20-40-40-rule-in-chess-an-efficient-approach/ 20/40/40 Rule in Chess: An efficient approach], Wegochess.com</ref><ref>[https://www.chessable.com/blog/fastest-way-to-learn-openings/#:~:text=What%20is%20the%2020%2040,and%2040%25%20to%20the%20endgame. The Fastest Way to Learn Chess Openings]</ref><ref>[https://www.chess.com/forum/view/general/10-steps-for-getting-good-at-chess-fast 10 Steps For Getting Good At Chess Fast]</ref> |