John A Grefe vs Mark Orfalea
US Open Palo Alto, date unknown · Result 1–0 · Petrov's Defense (C42).
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Game details
- White
- John A Grefe (2410)
- Black
- Mark Orfalea (2215)
- Result
- 1–0
- Event
- US Open Palo Alto
- Opening
- Petrov's Defense (C42)
About this chess game
This chess game between John A Grefe (2410) and Mark Orfalea (2215) was played at US Open Palo Alto and finished 1–0. The opening was the Petrov's Defense (C42). 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 A Grefe games or Mark Orfalea games? This John A Grefe vs Mark Orfalea 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 Petrov's Defense.
Frequently asked questions
Who won John A Grefe vs Mark Orfalea?
John A Grefe vs Mark Orfalea finished 1–0, a win for John A Grefe.
What opening was played in John A Grefe vs Mark Orfalea?
The game opened with the Petrov's Defense (ECO C42).
Can I replay this chess game move by move?
Yes. Use the interactive board on this page to step through every move of John A Grefe vs Mark Orfalea, or open it on the CipherChess analysis board to review it with the Stockfish engine.