The classical combinations, computed from the real sky. Running now in the panchang: Vriddhi yoga.
What the checker does: computes your planets’ sidereal positions for the exact birth moment and city, then tests each classical definition. What it refuses to do: announce lagna-dependent yogas (Raj Yoga, the strict Mahapurusha forms) without the data they genuinely need — those get an honest “needs your birth place” instead of a guess. And where a difficult yoga appears (Kemadruma), the classical cancellations are shown beside it, because the texts wrote them together.