Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation, Main Line
In the Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation, Main Line, aim to understand the plans and pawn structures, not just memorize the first moves.
The Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation, Main Line is a chess opening classified under ECO code E42. It is reached after the moves 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 O-O 7. a3: 13 moves in, with Black to play.
It belongs to the Nimzo-Indian Defense family — one of many ways the line can branch. Understanding the parent system’s plans is the fastest way to play this variation well.
Club players rarely lose the Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation, Main Line in the opening itself. They lose it a few moves later, when the plan behind the moves runs out: that is what reading your own games in this line shows you.