King's Gambit Declined, Falkbeer and Nimzowitsch (3....c6) Countergambits 1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 Qxd5
In each game under Location you see masterchessopen.com but it's not a valid website, so please don't use it. Claus Gamborg, Jan. 2023