411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. f4/2...d6/3. Nf3
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
King's Gambit Declined King's Gambit Declined
King's Gambit Declined
3. Nf3
White develops their knight to its most active square.
Theory table
34King's Gambit Accepted: Fischer Defence...
exf4d4
g5=...
Nc6Bc4
Nf6=