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You just replayed Piet Boonen vs Josef Der. On CipherChess, the same board opens up any game — check every move against the engine, prep the players you're about to face, and keep it all in one place that follows you everywhere.
See it for yourselfAbout this chess game
This chess game between Piet Boonen (2056) and Josef Der (1810) was played at Sparkassen Open in 2010 and finished 1-0. The opening was the Modern Defense (B06).
You can replay the full game move by move on the interactive board above, or open it on the CipherChess analysis board to study every move with the Stockfish engine.
Looking for more Piet Boonen games or Josef Der games? This Piet Boonen vs Josef Der encounter is one of millions of chess games indexed in the CipherChess mega database. Browse both players' full records, the openings they play most, and head-to-head results, then load any game onto the board to prepare your own lines against the Modern Defense.
Frequently asked questions
Who won Piet Boonen vs Josef Der?
Piet Boonen vs Josef Der (2010) finished 1-0, a win for Piet Boonen.
What opening was played in Piet Boonen vs Josef Der?
The game opened with the Modern Defense (ECO B06).
Can I replay this chess game move by move?
Yes. Use the interactive board on this page to step through every move of Piet Boonen vs Josef Der, or open it on the CipherChess analysis board to review it with the Stockfish engine.