At what rating do chess gambits stop working?
Analysis of 1076 chess gambits (703 White, 373 Black) reveals that 183 remain viable into the top rating brackets, 121 break around the middle brackets, and 772 are refuted in the lower brackets. "Viable" means the gambit side is statistically likely to win more than it loses. Rating brackets are from the gambit side's rating (Black gambits use Black Elo buckets).