Bottom-Two-Runoff IRV
Bottom-Two-Runoff IRV (BTR-IRV) is a voting system that selects a single winner using votes that express ranked preferences. BTR-IRV passes the Condorcet Criterion, and is by definition a Condorcet method.
BTR-IRV was conceived as a sort of Instant-runoff voting-Condorcet hybrid, in that the runoff it uses is very similar to IRV, but the runoff doesn't ever eliminate a Condorcet Winner.