What happens if a piece is accidentally displaced in xiangqi?
These answers restate the rules implemented by our open-source engine, which follows the WXF laws for movement, checkmate and both repetition rulings: a side that forces a repetition by perpetual check or perpetual chase loses rather than drawing. The chase half has not been validated against the official casebook. Where an answer refers to a specific position, that position lives on the linked reference page, where the build verifies it before publishing.
Direct answer
It is simply put back. Knocking a piece off its point, whether by a sleeve, a shaky table, or a clumsy reach for another piece, is not a move and carries no rules consequence. Both players restore the position from memory or a kept scoresheet and continue.
Why this is easy in xiangqi
Pieces are flat discs sitting on intersections rather than filling squares, so displacement is more common than in chess, but reconstruction is usually easy: a scoresheet or a spectator can confirm the position in seconds. This is also why touch-move conventions exist, to separate a genuine move from an accidental touch.
When it becomes a dispute
If the players disagree about where a piece stood and no record settles it, a tournament arbiter reconstructs the position from the scoresheets of both players or, if that fails, rules on the balance of evidence. This is a procedural matter, not a rules violation by either side.
Related questions
Does a displaced piece count as a completed move?
No. Nothing has been moved with intent, so nothing has happened under the rules.
Should I keep my own scoresheet in serious games?
Yes. It is the fastest way to resolve exactly this kind of dispute.
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