Koellner Draws Willems in Trompowsky at Grenke Open

The Opening

German International Master Ruben Gideon Koellner (2506) faced French FIDE Master Niels Willems (2388) in Round 6 of the Grenke Chess Festival 2026 Open. The game opened with the Trompowsky Attack after 1.d4 Nf6 2.Bg5, a sharp system that immediately puts pressure on Black's kingside development.

Willems responded with the solid 2...d5, establishing central control and avoiding the more complex lines that arise after 2...Ne4 or 2...e6. Koellner continued with 3.e3, opting for a positional approach rather than the more aggressive 3.Bxf6 or 3.f3 variations that define the main theoretical lines of the Trompowsky.

The Draw

The game concluded in a draw after what appears to have been a relatively quiet positional battle. Both players maintained balanced positions throughout the early phase, with the computer evaluation hovering around equality from the opening moves.

This result was part of a round where draws dominated the top boards. Koellner, who had been performing well in the tournament with 4½ points from his first five games, was likely content to split the point against a lower-rated but dangerous opponent. At 22 years old, the German IM has been one of the solid performers in this strong open tournament.

Tournament Context

The draw kept both players in contention in the competitive Grenke Open field. Koellner maintained his position among the leaders with this result, while Willems added another half-point to his tournament tally. The Grenke Chess Festival has attracted a strong international field, with players from across Europe, Asia, and the Americas competing in the open section.

The time control of 90 minutes plus 30 seconds per move allowed for deep calculation, though both players seemed to steer toward a peaceful conclusion rather than risk complications in what was clearly a balanced position.

This type of solid, professional game demonstrates the high level of preparation and positional understanding required to compete at the international master level. At ChessFlow, games like this showcase the subtle beauty of chess strategy and make striking wall art that captures the essence of high-level competition.