411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. f4/2...d5/3. exd5/3...exf4
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Falkbeer Countergambit: Modern Transfer
Falkbeer Countergambit: Modern Transfer
3...exf4
Theory table
+4+King's gambit accepted: Modern defenceNf3=