Chiel Koster's chess openings
CM🇳🇱 NetherlandsFIDE 222674 games
Chiel Koster, Candidate Master from Netherlands, has 74 tournament games in the ChessPrep database. As White, Chiel Koster most often opens with 1.e4 (78% of games). As Black, against 1.e4 the usual reply is 1...c5, the Sicilian Defense; against 1.d4 it is 1...Nf6.
As White37 games · +16 =11 −10 · 58%
As Black37 games · +15 =12 −10 · 57%
As White
- 1.e4 King's Pawn Opening78%29 games · scores 59% · main line 1.e4 c5 2.Nf3 d6 3.d4 cxd4
- 1.Nf3 Réti Opening11%4 games · scores 88% · main line 1.Nf3 Nf6 2.c4 g6 3.g3 Bg7
- 1.c4 English Opening5%2 games · scores 50% · main line 1.c4 e5 2.Nc3 Nc6 3.g3 g6
As Black against 1.e4
- 1...c5 Sicilian Defense95%20 games · scores 55% · main line 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4
- 1...e6 French Defense5%1 game · scores 50% · main line 1.e4 e6 2.d4 d5 3.Nc3 dxe4
As Black against 1.d4
- 1...Nf6 Indian Defense100%7 games · scores 64% · main line 1.d4 Nf6 2.c4 e6 3.Nf3 d5
Playing Chiel Koster soon?
ChessPrep shows every line Chiel Koster plays as White and as Black, where they score worst, and how your own openings cover them — then drills your answers.
Prepare in ChessPrep