411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...d6/3. d4/3...Nd7/4. Bc4/4...Ngf6/5. dxe5/5...Nxe5/6. Nxe5/6...dxe5/7. Bxf7
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Hanham variation C41 Philidor defence → Hanham variation → 6. dxe5
7. Bxf7+
White takes a pawn with check. This leads to a queen trade.
If 7...Ke7, to avoid the check while keeping contact with the queen, 8. Qxd8+ Kxd8. The queens have been traded and White is up a pawn.
If 7...Kxf7 8. Qxd8, for a moment White may think they have driven away the defender of Black's queen, but Black has 8...Bb4+ (discovered attack on White's queen) 9. Qd2 Bxd2 10. Nxd2. The queens and bishops are traded and White is still up a pawn.
Theory
+78910Bxf7+
Kxf7Qxd8
Bb4+Qd2
Bxd2+Nxd2 +/-
References
See also