E30 is the opening Nimzo-Indian Defense: Leningrad Variation of the volume E · Indian defences: 7 half-moves to the position in the diagram, 2 variations in the ECO table.
What the games say
678 games in the collections, from 1921 to 2021. Mean rating of the games with ratings: 2413.
White wins 29 %, draws 32 %, Black wins 38 %
Most games: Spassky, Boris V (13), Breutigam, Martin (10), Portisch, Lajos (10), Timman, Jan H (10), Zsinka, Laszlo (10)
All 2 variations
- Nimzo-Indian Defense: Leningrad Variation 1.d4 ♘f6 2.c4 e6 3.♘c3 ♗b4 4.♗g5
- Nimzo-Indian Defense: Leningrad Variation, Averbakh Gambit 1.d4 ♘f6 2.c4 e6 3.♘c3 ♗b4 4.♗g5 h6 5.♗h4 c5 6.d5 b5