Chess Board
[ECO code C14]
Classical Var. - The Stahlberg Variation

White castled long (ie. on the board's Q-side), bringing his queen's rook into central play.
Black adopts the Stahlberg, pushing his QBPawn on to QB5(c4) avoiding 11.PxP and a half-open file.
    White  Black	White  Black
 1. P-K4   P-K3	     6.	BxB    QxB
 2. P-Q4   P-Q4	     7.	Q-Q2   0-0
 3. Kt-QB3 Kt-KB3    8.	P-B4   P-QB4
 4. B-KKt5 B-K2	     9.	Kt-B3  Kt-QB3
 5. P-K5   KKt-Q2   10.	0-0-0  P-B5

Example ends: Undo or Jump or Clear