Chess Board
[ECO code E41]
NIMZO-INDIAN DEF. - Rubinstein System
Hübner Variation
White's threatened Q4(d4) Pawn moves to Q5(d5) and attacks Black's Q-side knight.
Black's QB3(c6) Knight moves to K2(e7) reversing the QP attack, with equality.
    White  Black	White  Black
 1. P-Q4   Kt-KB3    6.	Kt-B3  BxKt
 2. P-QB4  P-K3	     7.	PxB    P-Q4
 3. Kt-QB3 B-Kt5     8.	P-K4   P-K4
 4. P-K3   P-B4	     9.	P-Q5   Kt-K2
 5. B-Q3   Kt-B3
Example ends: Undo or Jump or Clear