Jouni Yrjölä is a Finnish chess player and author renowned for achieving the prestigious ranking of Grandmaster in 1990. Besides holding the esteemed title in the world of chess, he has also been accredited as Finland's national amateur chess champion. Yrjölä has penned down a variety of books educating readers on several chess strategies and concepts, with his work often published in the ChessBase database.
Yrjölä's widely recognized works include books like "Mastering Chess: A Course in 21 Lessons", "Expert’s Guide to the Endgame: Chess Training", "100 Endgames chess players should know", and many more. These chess manuals serve as a guide for novice and intermediary chess enthusiasts to widen their knowledge in the game and master the strategic moves and tactics.
His significant achievements also comprise writing for the Suomen Shakki magazine, actively participating in 'Soloscacchi', an Italian chess magazine, writing about different chess games, their openings, and many other total game databases.
In a nutshell, Yrjölä has solidified his position as a valued player, Grandmaster, and contributing author in the vast community and industry of chess.