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O'Leary, M's chess openings

Peak rating 205347 games

O'Leary, M has 47 tournament games in the ChessPrep database. As White, O'Leary, M most often opens with 1.d4 (74% of games). As Black, against 1.e4 the usual reply is 1...c5, the Sicilian Defense; against 1.d4 it is 1...Nf6.

As White23 games · +4 =4 −15 · 26%
As Black24 games · +4 =5 −15 · 27%

As White

  1. 1.d4 Queen's Pawn Opening74%
    17 games · scores 18% · main line 1.d4 Nf6 2.c4 c5 3.Nf3 cxd4
  2. 1.Nf3 Réti Opening17%
    4 games · scores 50% · main line 1.Nf3 g6 2.d4 Bg7 3.e4 d6
  3. 1.e4 King's Pawn Opening4%
    1 game · scores 0% · main line 1.e4 d6 2.d4 Nf6 3.Nc3 g6

As Black against 1.e4

  1. 1...c5 Sicilian Defense100%
    11 games · scores 27% · main line 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4

As Black against 1.d4

  1. 1...Nf6 Indian Defense100%
    7 games · scores 21% · main line 1.d4 Nf6 2.c4 c5 3.d5 d6

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