Performance over time
A problem from My Daily Exercise - 365 Tactical Tests
How can we measure chess performance ? A chess rating system is used in chess to calculate an estimate of the strength of the player, based on their performance versus other players.
Chessmetrics is a system for rating chess players devised by Jeff Sonas. It is intended as an improvement over the Elo rating system. The system has also been described as "the most complete and resounding attempt made to determine the best chess player in history". However, the system is more accurate in measuring a player's success in competition than quality of play
👍 Video - Best chess players over time (5:18 min)