Chess Board
[ECO code D63]
QUEEN'S GAMBIT - Orthodox Defence
Henneberger (aka. Swiss) Variation
White develops King's Bishop to Q3(d3), contests for K4(e4) control and enables short castling.
Black's QKtPawn out to QKt3(b6) attacks White's QBP for (best) 10.PxKtP..P-B4, 12.0-0..P-B5 equality.
    White  Black	White  Black
 1. P-Q4   P-Q4      6.	Kt-B3  QKt-Q2!
 2. P-QB4  P-K3      7.	R-B1   P-QR3
 3. Kt-QB3 Kt-KB3    8.	P-B5   P-B3
 4. B-Kt5  B-K2	     9.	B-Q3   P-QKt3
 5. P-K3   0-0
Example ends: Undo or Jump or Clear