Chess Board
[ECO code D81] Move Move Here
The Russian Variation

Black's ..P-Q4 threatened White's QBP and deterred 4.P-K4, inviting 4.PxP with a plan to exploit a1-h8.
White develops his Queen to QKt3(b3) to support his QBP and avoid an exchange with Black's KKt (so that it will block Black's ..B-Kt2 diagonal). W-Alt.
	White	Black
 1.	P-Q4	Kt-KB3
 2.	P-QB4	P-KKt3
 3.	Kt-QB3	P-Q4
 4.	Q-Kt3

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