Chess Board
[ECO code C64]
RUY LOPEZ - Classical Defence
Cordel Var. - Side Variation
White's QPawn on Q4(d4) removes Black's rear doubled KP on K5(e5) and offers 7..KtxP, 8.KtxP.
Disaster - Black's QB3(c6) Knight takes the KP but 8.Kt-K6 will win Black's Q [correct was 7..BxKt].
    White  Black	White  Black
 1. P-K4   P-K4	     6.	Kt-Kt5 B-K2
 2. Kt-KB3 Kt-QB3    7.	PxP    KtxP??
 3. B-Kt5  B-B4
 4. P-B3   P-B4
 5. P-Q4   BPxP
Example ends: Undo or Jump or Clear