Jer O'brien's chess openings
🇮🇪 IrelandFIDE 16565 games
Jer O'brien, from Ireland, has 5 tournament games in the ChessPrep database. As White, Jer O'brien most often opens with 1.e4 (100% of games). As Black, against 1.e4 the usual reply is 1...c6, the Caro-Kann Defense.
As White3 games · +0 =1 −2 · 17%
As Black2 games · +0 =1 −1 · 25%
As White
- 1.e4 King's Pawn Opening100%3 games · scores 17% · main line 1.e4 c6 2.d4 d5 3.e5 Bf5
As Black against 1.e4
- 1...c6 Caro-Kann Defense100%2 games · scores 25% · main line 1.e4 c6 2.d4 d5 3.Nc3 dxe4
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ChessPrep shows every line Jer O'brien plays as White and as Black, where they score worst, and how your own openings cover them — then drills your answers.
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