Chess Board
[ECO code D52]
QGD. - CAMBRIDGE SPRINGS DEF.
Side Variation
White developed a queen to QR4(a4) against the Q on QR5(a5) to defend his QR, and avoided a trap.
Black's QR4(a5) Queen removes White's queen and 9.KtxQ..B-Kt5+ch, 10.K-K2[forfeits castling] ..KtxB, 11.KtxKt..P-KR4 will give Black a slight advantage.
    White  Black	White  Black
 1. P-Q4   P-Q4	     5. P-K3   P-B3
 2. P-QB4  P-K3	     6.	Kt-B3  Q-R4
 3. Kt-QB3 Kt-KB3    7.	B-Q3?! Kt-K5!
 4. B-Kt5  QKt-Q2!   8.	Q-R4   QxQ
Example ends: Undo or Jump or Clear