Opening explorer

• 4.e4Nimzo-Indian Defense: Dilworth Gambit1 named line below1 named line below1 named line below1 named line below
• 4.f3Nimzo-Indian Defense: Kmoch Variation5 named lines below5 named lines below5 named lines below5 named lines below
• 4.Qd3Nimzo-Indian Defense: Mikenas Attack1 named line below1 named line below1 named line below1 named line below
• 4.g3Nimzo-Indian Defense: Romanishin Variation1 named line below1 named line below1 named line below1 named line below
• 4.Nf3Nimzo-Indian Defense: Three Knights Variation8 named lines below8 named lines below8 named lines below8 named lines below
• 4.Qb3Nimzo-Indian Defense: Spielmann Variation5 named lines below5 named lines below5 named lines below5 named lines below
• 4.a3Nimzo-Indian Defense: Sämisch Variation4 named lines below4 named lines below4 named lines below4 named lines below
• 4.e3Nimzo-Indian Defense: Rubinstein System49 named lines below49 named lines below49 named lines below49 named lines below
• 4.Bg5Nimzo-Indian Defense: Leningrad Variation3 named lines below3 named lines below3 named lines below3 named lines below
• 4.Qc2Nimzo-Indian Defense: Classical Variation20 named lines below20 named lines below20 named lines below20 named lines below

Moves come from the 3,810 lines we replayed and validated. Win rates exist for the 314 we sync statistics for, so the deeper you go the more often you will see a name without a number.