[3] Also he two times won Bulgarian Chess Championship silver medals: in 2004 and 2009.

He won or shared the 1st place in many international chess tournaments, include Albena (1992), Pavlikeni (1994), Chambéry (1996), Paris (1997), Saint-Affrique (1998), Cutro (1998, 2001), Porto San Giorgio (2000, 2003), Imperia (2001), Val Thorens (2001, 2004), Reggio Emilia (2001/02), Balatonlelle (2002, 2003), Agde (2002), La Roda (2004), Genoa (2005), Sunny Beach (2005, 2006) and Rijeka (2007).

Boris Chatalbashev played for Bulgaria in the Chess Olympiads:[4] Boris Chatalbashev played for Bulgaria in the European Team Chess Championships:[5] Boris Chatalbashev played for Bulgaria in the Men's Chess Balkaniads:[6] In 1995, he was awarded the FIDE International Master (IM) title and received the FIDE Grandmaster (GM) title two years later.

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