♞ ChessPrepOpen the app

Niall O'Sullivan's chess openings

5 games

Niall O'Sullivan has 5 tournament games in the ChessPrep database. As White, Niall O'Sullivan most often opens with 1.b3 (100% of games). As Black, against 1.e4 the usual reply is 1...e5, the Open Game; against 1.d4 it is 1...Nc6.

As White2 games · +0 =0 −2 · 0%
As Black3 games · +1 =0 −2 · 33%

As White

  1. 1.b3 Nimzo-Larsen Attack100%
    2 games · scores 0% · main line 1.b3 Nf6 2.Bb2 e6 3.e3 Nc6

As Black against 1.e4

  1. 1...e5 Open Game100%
    1 game · scores 100% · main line 1.e4 e5 2.Bc4 Bc5 3.d3 Nf6

As Black against 1.d4

  1. 1...Nc650%
    1 game · scores 0% · main line 1.d4 Nc6 2.Nf3 e6 3.Bf4 Bb4+
  2. 1...e6 Horwitz Defense50%
    1 game · scores 0% · main line 1.d4 e6 2.Nc3 Nf6 3.Bf4 Nh5

Playing Niall O'Sullivan soon?

ChessPrep shows every line Niall O'Sullivan plays as White and as Black, where they score worst, and how your own openings cover them — then drills your answers.

Prepare in ChessPrep

Similar players