Koolhoven, J.'s chess openings
8 games
Koolhoven, J. has 8 tournament games in the ChessPrep database. As White, Koolhoven, J. most often opens with 1.e4 (100% of games). As Black, against 1.e4 the usual reply is 1...c5, the Sicilian Defense.
As White5 games · +0 =2 −3 · 20%
As Black3 games · +1 =0 −2 · 33%
As White
- 1.e4 King's Pawn Opening100%5 games · scores 20% · main line 1.e4 e5 2.Nf3 Nc6 3.d4 exd4
As Black against 1.e4
- 1...c5 Sicilian Defense100%3 games · scores 33% · main line 1.e4 c5 2.c3 Nc6 3.Nf3 d6
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