Chess Board
[ECO code D71 > 79] Move Move Move Here Move Here
The Counterthrust Variation

White developed an "Indian" KB to threaten Black's QP and dominate the long (light) diagonal.
Black develops his own King's Bishop in similar fashion, intending to counterthrust on the a1-h8 diagonal with a Grunfeld Indian approach.
     White   Black
 1.  P-Q4    Kt-KB3
 2.  P-QB4   P-KKt3
 3.  P-KKt3  P-Q4
 4.  B-Kt2   B-Kt2  Alt. 4B,3B route

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