Chess Board
[ECO code C42]
PETROFF'S DEFENCE
Close Variation
White develops his King's Bishop to Q3(d3) and enables his king to castle away from the open e-file.
Black develops his own King's Bishop to K2(e7), and is also now able to castle for safety.
    White  Black	White  Black
 1. P-K4   P-K4	     5.	P-Q4   Kt-KB3
 2. Kt-KB3 Kt-KB3    6.	B-Q3   B-K2
 3. KtxP   P-Q3
 4. Kt-KB3 KtxP
Example ends: Undo or Jump or Clear