1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4 The Nimzo-Indian had always had solid  reputation. 4. d1c2  4... d7d5 But this is a surprise. So far Ju has always  played either: 5. a2a3  5... b4c3 