Jan Boersma Full name Jan Boersma Born 1958 (age 67) Place of birth Federation Netherlands Profiles #19304 World Ranking 2055 Classical Rating Bio Most Played Openings White Pieces Closed Sicilian Defense: Fianchetto Variation (5 games) French Defense: Winawer, Alekhine-Maróczy Gambit (4 games) Sicilian Defense: Mengarini Variation (3 games) Caro-Kann Defense: Gurgenidze System (2 games) Four Knights Game: Spanish Variation (2 games) Black Pieces Sicilian Defense: Hyperaccelerated Dragon Variation (5 games) French Defense: Tarrasch, Open, Chistyakov Defense (5 games) King's Indian Defense: Orthodox Variation (4 games) Sicilian Defense: Hyperaccelerated Dragon, Fianchetto Variation (3 games) Sicilian Defense: Old Sicilian, Open, Accelerated Dragon Variation (2 games) Games Players Result Moves Year Jan Boersma (1997) Luuk Van Kooten (2255) ½-½ 20 2023 Arthur De Winter (2397) Jan Boersma (1997) 1-0 19 2023 Arend Oosterhuis Jan Boersma (1930) 0-1 18 2022 Robert Hovhannisyan (2601) Jan Boersma (1930) 1-0 34 2022 Bram Van den Berg (2209) Jan Boersma (2049) 1-0 58 2021 Jan Boersma (2069) Rembrandt Bruil (2206) ½-½ 19 2019 Jan Boersma (2070) Bas De Boer (2142) ½-½ 14 2019 Dries Wedda (2209) Jan Boersma (2069) ½-½ 23 2019 Melanie Ohme (2279) Jan Boersma (2069) 1-0 85 2019 Onno Elgersma (2319) Jan Boersma (2069) 1-0 58 2019 Show All Games