Halldor Jonsson's chess openings
15 games
Halldor Jonsson has 15 tournament games in the ChessPrep database. As White, Halldor Jonsson most often opens with 1.d4 (50% of games). As Black, against 1.e4 the usual reply is 1...c5, the Sicilian Defense; against 1.d4 it is 1...Nf6.
As White6 games · +0 =4 −2 · 33%
As Black9 games · +2 =2 −5 · 33%
As White
- 1.d4 Queen's Pawn Opening50%3 games · scores 33% · main line 1.d4 e6 2.e4 d5 3.Nc3 Bb4
- 1.e4 King's Pawn Opening33%2 games · scores 25% · main line 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6
- 1.c4 English Opening17%1 game · scores 50% · main line 1.c4 Nf6 2.Nc3 g6 3.Nf3 Bg7
As Black against 1.e4
- 1...c5 Sicilian Defense100%4 games · scores 63% · main line 1.e4 c5 2.f4 Nf6 3.d3 d5
As Black against 1.d4
- 1...Nf6 Indian Defense100%4 games · scores 13% · main line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7
Playing Halldor Jonsson soon?
ChessPrep shows every line Halldor Jonsson plays as White and as Black, where they score worst, and how your own openings cover them — then drills your answers.
Prepare in ChessPrep