How do I convert having two chariots against a single enemy chariot, not a bare general?
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
Look for a good chance to trade off the defender's remaining chariot, since two chariots against a bare general mate almost instantly once nothing stands in the way. Do not force the trade at any material cost, but treat a clean opportunity to remove the last defending chariot as usually worth taking, even at the price of a soldier or two.
Why removing the last chariot is so valuable here
Two chariots working together control six of the palace's nine points, which is why 雙車錯 mates a bare general in only a handful of moves. A single defending chariot is the only piece capable of seriously contesting that coverage, so once it is gone, the conversion becomes close to automatic rather than requiring further technique.
What to do while the defending chariot is still on the board
Coordinate your two chariots rather than attacking with only one at a time, and look for tactics that either win the defending chariot outright or force a trade on favourable terms. Until that chariot is gone, treat the position with the same care as any other two-versus-one material edge, not as an automatic win yet.
Related questions
Is it ever better to avoid the trade and just outplay the single chariot?
Occasionally, if trading costs real material for no clear gain, but removing the last chariot is usually the more efficient route once a fair chance appears.
Does the defending side have any real chances here?
Limited ones, mostly around active piece play and any tactical resource involving the remaining chariot; the position is winning for the side with two.