Biernacki, MarkFIDE ID 20823224Games1Wins0Draws3Losses25%ScorePeak rating1999Latest rating1997First seenJul 3, 2026Last seenJul 4, 2026Recent gamesDateWhiteResultBlackEventOpeningJul 4, 2026Sagar0–1BiernackiRound 11: Sagar, Shah - Biernacki, MarkEnglish Opening: Anglo-Indian Defense, King's Indian FormationJul 4, 2026Rosen1–0BiernackiRound 5: Rosen, Eric - Biernacki, MarkIndian Defense: Accelerated London SystemJul 3, 2026Bartholomew1–0BiernackiRound 5: Bartholomew, John - Biernacki, MarkModern Defense: Two Knights VariationJul 3, 2026Rensch1–0BiernackiRound 1: Rensch, Daniel - Biernacki, MarkKing's Indian Defense: Fianchetto Variation, Panno Variation