One of the best moves to meet the Nimzo Indian Defense (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4) is 4.e3. Many authorities call this the 'Rubinstein Variation'. Unlike other moves, 4.e3 doesn't attempt to refute Black's setup. White builds a strong center and aims for flexible development. One idea is to continue Ng1-e2, recapturing with the Knight if Black plays ...Bxc3+. Read more...