Chess Board
[ECO code C43]
PETROFF'S DEFENCE
Modern Variation
Black developed his queen's knight to QB3(c6), attacking White's queen.
White's Queen under attack moves to KB4(f4), and both sides have chances in the remaining game.
    White  Black	White  Black
 1. P-K4   P-K4      6.	PxP ep KtxP
 2. Kt-KB3 Kt-KB3    7.	B-Q3   Kt-B3
 3. P-Q4   PxP	     8.	Q-KB4
 4. P-K5   Kt-K5
 5. QxP	   P-Q4
Example ends: Undo or Jump or Clear