Does King's Gambit Declined: Classical Variation, Rubinstein Countergambit work for Black at All Ratings?
At All Ratings, King's Gambit Declined: Classical Variation, Rubinstein Countergambit keeps Black's wins running −4.3% ahead of its losses at worst, 90% confident, from 1.6K Lichess games. The games don't show this gambit paying at this level. Win rate, draw rate and loss rate come from games played December 2023 to November 2025.