Chess Board
[ECO code B03]
ALEKHINE DEF. - Four Pawns Attack
The Trifunovich Variation
White's P-KB4 doubled his K5(e5) pawn support.
Black develops his Queen's Bishop to KB4(f5) for 6.Kt-KB3..P-K3, 7.Kt-B3..P-QR3. Petar Trifunovich was a Yugoslav IGM (1953). B-Alt.
	White	Black
 1.	P-K4	Kt-KB3
 2.	P-K5	Kt-Q4
 3.	P-Q4	P-Q3
 4.	P-QB4	Kt-Kt3
 5.	P-B4	B-B4
Example ends: Undo or Jump or Clear