GM Harmen Jonkman
Harmen Jonkman is a Dutch Grandmaster with a versatile opening repertoire that includes the French Advance, the Queen's Gambit Accepted, and the Two Knights Defence. He has been a steady competitor in Dutch and European chess.
Associated Openings
As White
As Black
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Beginner (Under 1000)
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Intermediate (1000–1499)
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Advanced (1500–1999)
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Expert (2000–2499)
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Master (2500+)
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