What is the difference between move notation and position notation in xiangqi?
These answers restate the rules implemented by our open-source engine, which follows the WXF laws and is regression-tested against the official 110-diagram repetition casebook. Where an answer refers to a specific position, that position lives on the linked reference page, where the build verifies it against the engine before publishing.
Direct answer
Move notation records a sequence of actions; position notation records a single moment. WXF and Chinese notation (C2=5, 炮二平五) describe what a piece did, move after move, building a game up from the start. A FEN-style string describes where every piece already is, with no memory of how it got there.
When each one is the right tool
Use move notation to share a whole game, an opening line, or a sequence a student should play through. Use position notation for a puzzle, a diagram, or feeding a single position into an engine, anywhere the history before that point is irrelevant to the question being asked. See xiangqi's FEN-style strings for the format itself.
Why a position string alone can lose information
Castling rights matter for this in chess; xiangqi has no castling, but it still loses something: a FEN string cannot show whether a repetition is building, since that depends on the moves that led there, not just the current arrangement. That is one reason repetition adjudication is judged from the move list, never from a single position in isolation.
Related questions
Which does this site use for its puzzles and diagrams?
Position notation for the diagram itself, with move notation layered on top to show the solution sequence.
Can you convert a position string back into a move list?
No, not on its own. A position tells you where things are, not how they arrived there.
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