Can a cannon stop an enemy chariot?
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
Not by simple obstruction, a cannon in an enemy chariot's path is just a piece the chariot will capture. What a cannon can do is threaten the chariot directly, through a screen, or control the point the chariot is heading toward, making the advance too costly rather than physically impossible.
Defending through threat, not blockade
Because a chariot simply captures the first piece it meets on a clear line, a cannon cannot act as a wall the way it might against a horse's approach. Instead, a well-placed cannon can pin down a chariot's activity by threatening it whenever it steps onto a particular file or rank, forcing it to stay cautious.
A cannon versus chariot endgame
In simplified positions, a lone cannon generally struggles against a lone chariot, since the chariot can often manoeuvre to avoid ever giving the cannon a useful screen while still finding ways to attack. Extra defenders on the cannon's side change this balance considerably.
Related questions
Is cannon versus chariot ever winning for the cannon side alone?
Generally the chariot is considered stronger in a bare endgame; the cannon usually needs help from other material to hold or win.
Can a cannon capture a chariot outright?
Yes, exactly like capturing any other piece, if it can arrange exactly one screen between them.
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