Profile of Kovalenko, Igor | Chess ABC
New Chess Brains - Deutscher Schachbund - Schach in Deutschland
Matiss Mustaps player profile - ChessBase Players
Midnight Chess Academy | Facebook
IM Emilis Pileckis - FM Matiss Mustaps, Reti opening, Rapid chess, PART II - YouTube
FM Kirill Chukavin - FM Matiss Mustaps , Sicilian Dragon, Blitz chess - YouTube
Chess Daily News by Susan Polgar - Andreikin wins European Blitz Championship by 1.5 point
Latvijas Šaha Federācija
ChessAbc - Lupulescu, Constantin Chess Player Profile
Mustaps, Matiss
Latvijas Šaha Federācija
joasol – Latvian Championship:Neiksans loses
RAPID CHESS: FM Matiss Mustaps - GM Alexei Shirov, French defense - YouTube
Igor Kovalenko and Katrina Skinke are new Latvian champions – Chessdom
FM Matiss Mustaps (matiss90) - Chess Profile - Chess.com
New Chess Brains - Deutscher Schachbund - Schach in Deutschland
IM Paulius Pultinevicius - FM Matiss Mustaps, King's indian defense, Blitz chess - YouTube
Latvijas Šaha Federācija
3059 Performance For Ivanchuk at Latvian Railway Open - Chess.com
3059 Performance For Ivanchuk at Latvian Railway Open - Chess.com
