Chess Board
[ECO code E77] Move Move Here
Four Pawns Attack (main line)

Black's KP with QB support to K3(e6) attacked the White QP advance.
White develops his King's Knight to KB3(f3) and has avoided a ..B-KKt5 pin, and enables 0-0. W-Alt.
    White  Black	White  Black
 1. P-Q4   Kt-KB3    6.	B-K2   P-B4!
 2. P-QB4  P-KKt3    7.	P-Q5   P-K3
 3. Kt-QB3 B-Kt2     8.	Kt-B3
 4. P-K4   P-Q3
 5. P-B4!? 0-0	   Alt. 8W,6W route

BLACK to Move or Undo or Jump or Clear
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