E51 is the opening Nimzo-Indian Defense: Normal Variation, Ragozin Variation of the volume E · Indian defences: 10 half-moves to the position in the diagram, 3 variations in the ECO table.
What the games say
684 games in the collections, from 1842 to 2022. Mean rating of the games with ratings: 2485.
White wins 34 %, draws 39 %, Black wins 27 %
Most games: Mitkov, Nikola (30), Blatny, Pavel (15), Kortschnoj, Viktor (15), Farago, Ivan (13), Pachman, Ludek (13)
All 3 variations
- Nimzo-Indian Defense: Normal Variation, Ragozin Variation 1.d4 ♘f6 2.c4 e6 3.♘c3 ♗b4 4.e3 O-O 5.♘f3 d5
- Nimzo-Indian Defense: Normal Variation, Sämisch Deferred 1.d4 ♘f6 2.c4 e6 3.♘c3 ♗b4 4.e3 O-O 5.♘f3 d5 6.a3
- Nimzo-Indian Defense: Ragozin Variation 1.d4 ♘f6 2.c4 e6 3.♘c3 ♗b4 4.e3 O-O 5.♗d3 d5 6.♘f3 ♘c6 7.O-O dxc4