Glicko rating system - Wikipedia"Glicko" redirects here. For the village in Poland, see Glicko, Goleniów County. The Glicko rating system and Glicko-2 rating system are methods of assessing a player's strength in zero-sum two-player games. The Glicko rating system was invented by Mark Glickman in 1995 as an improvement on the Elo rating system and initially intended for the primary use as a chess rating system. Glickman's princi
