Chess Board
[ECO code E54]
NIMZO-INDIAN DEF. - Rubinstein Sys.
The Bronstein Variation

White's bishop under attack on Q3(d3) exchanged, removing Black's doubled QBP on QB4(c4).
Black sets his Queen's Bishop on Q2(d7) for ..B-Kt3, the main Nimzo Bronstein line. B-Alt.
    White  Black	White  Black
 1. P-Q4   Kt-KB3    6.	B-Q3   P-B4
 2. P-QB4  P-K3	     7.	0-0    PxBP
 3. Kt-QB3 B-Kt5     8.	BxP    B-Q2
 4. P-K3   0-0
 5. Kt-B3  P-Q4

Example ends: Undo or Jump or Clear