Chess Board
[ECO code C23] Move Move Here
TRANSPOSITION
BISHOP'S OPG. (Wing G.) to GIUOCO PIANO (Evans)
Black's beset QKt5(b4) bishop retreated to QR4(a5), keeping a half-pin on White's QBP.
White's King's Knight to KB3(f3) attacks Black's KP, supports 6.P-Q4 and enables castling. W-Alt.
	White	Black
 1.	P-K4	P-K4
 2.	B-B4	B-B4
 3.	P-QKt4	BxP
 4.	P-QB3	B-R4
 5.	Kt-KB3
BLACK to Move or Undo or Jump or Clear