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See it for yourselfAbout this chess game
This chess game between Sean Cummins (1862) and Oisin O`cuilleanain (2146) was played at DCU Open 2026 in 2026 and finished 0-1. The opening was the Sicilian Defense: Najdorf Variation (B90).
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 Sean Cummins games or Oisin O`cuilleanain games? This Sean Cummins vs Oisin O`cuilleanain 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 Sicilian Defense: Najdorf Variation.
Frequently asked questions
Who won Sean Cummins vs Oisin O`cuilleanain?
Sean Cummins vs Oisin O`cuilleanain (2026) finished 0-1, a win for Oisin O`cuilleanain.
What opening was played in Sean Cummins vs Oisin O`cuilleanain?
The game opened with the Sicilian Defense: Najdorf Variation (ECO B90).
Can I replay this chess game move by move?
Yes. Use the interactive board on this page to step through every move of Sean Cummins vs Oisin O`cuilleanain, or open it on the CipherChess analysis board to review it with the Stockfish engine.