The SSDF Rating List, 2020-07, in memoriam Tony Hedlund

This is the Chess Engine Rating list of 2020-07 from Svenska schackdatorforeningen, the Swedish Chess Computer Association. It is dedicated to the late Tony Hedlund, a leading contributor to SSDF who also managed its database of games. SSDF has produced the list for 23 years. Here we supply the 'Selected 50' subset with headline notes on each engine. SSDF's 2020-07 narrative, top 50 and long lists (both with match details) may also be downloaded from here.