How do I convert having an extra elephant or advisor when the rest of the material is level?
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
An extra elephant or advisor rarely wins the game by itself, but it makes your own defensive structure considerably harder to break, which frees you to press for chances elsewhere without worrying about your own palace. Treat it as a safety margin that lets you play more ambitiously, not as material to convert directly.
Why this kind of edge does not convert like an extra soldier
Advisors and elephants cannot leave their own side of the board, so an extra one adds nothing to your attack; its entire value is defensive. The practical benefit shows up indirectly: you can afford to trade off your own defenders more freely elsewhere, or take on slightly more risk in an attack, because your palace already has one more layer of protection than your opponent's.
Where the advantage actually shows up over the board
In a sharp position where both sides are trading defenders to clear the way for an attack, having the spare defender means you run out of safe structure later than your opponent does, exactly the asymmetry described in why elephants matter more as the board empties. The edge is real; it just shows up as resilience rather than as a direct route to mate.
Related questions
Should I trade this extra defender away for a more active piece?
Generally no, since its value is specifically in the defensive resilience it adds; trading it away removes exactly the advantage you have.
Does this matter more against a chariot or against a horse and cannon?
It matters most against whichever material specifically targets the piece you have extra: advisors against chariots and cannons, elephants against horses and soldiers.