SOCHI, Russia — Forget what your own eyes saw. That’s just figure skating: It’s rarely obvious, and it’s almost always maddeningly controversial, and so the gorgeous skate-off between Adelina Sotnikova of Russia and Kim Yu-na of South Korea for the Olympic gold medal will be endlessly argued. This sport, so brightly lit, can be algebraically unintelligible when it’s not corrupt, and the skater who doesn’t want to be victimized by a pencil-wielding judge sitting at a table in a fur coat had better pack her performance with jumps, skate her sequins off and hope for the best. That’s exactly what Sotnikova did.