ECO D87
2 named openings and variations are classified as D87. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Grünfeld Defense: Exchange Variation, Seville VariationD871. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 O-O 10. O-O Bg4 11. f3 Na5 12. Bxf7+
- Grünfeld Defense: Exchange Variation, Spassky VariationD871. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 O-O