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. Bxf7/7...Kxf7/8. Qxd8/8...Bb4/9. Qd2
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Hanham variation C41 Philidor defence → Hanham variation → 8...Bb4+
9. Qd2
White interposes the check while counter-attacking Black's bishop.
9...Bxd2+, recovering the queen, is the only good move of course. After 9...Bxd2+ 10. Nxd2 (defends the e-pawn), the queens and bishops have been traded and White remains up a pawn.
Theory table
+910Qd2
Bxd2+Nxd2 +/-
References
See also