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You just replayed John Ahlborg vs Alexander Katz. 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 John Ahlborg (2224) and Alexander Katz (2405) was played at 49. Annual World Open in 2021 and finished 0-1. The opening was the Catalan Opening: Open Defense (E04).
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 John Ahlborg games or Alexander Katz games? This John Ahlborg vs Alexander Katz 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 Catalan Opening: Open Defense.
Frequently asked questions
Who won John Ahlborg vs Alexander Katz?
John Ahlborg vs Alexander Katz (2021) finished 0-1, a win for Alexander Katz.
What opening was played in John Ahlborg vs Alexander Katz?
The game opened with the Catalan Opening: Open Defense (ECO E04).
Can I replay this chess game move by move?
Yes. Use the interactive board on this page to step through every move of John Ahlborg vs Alexander Katz, or open it on the CipherChess analysis board to review it with the Stockfish engine.