| Eco | Name | First moves | # games |
|---|
| B21 | Sicilian, 2.f4 and 2.d4 | 1 e4 c5 2 f4 | 3 |
| A30 | English, Symmetrical | 1 c4 c5 | 2 |
| D00 | Queen's Pawn Game | 1 d4 d5 | 2 |
| D03 | Torre Attack (Tartakower Variation) | 1 d4 d5 2 Sf3 Sf6 3 Lg5 | 2 |
| D11 | Queen's Gambit Declined Slav | 1 d4 d5 2 c4 c6 3 Sf3 | 2 |
| D35 | Queen's Gambit Declined | 1 d4 d5 2 c4 e6 3 Sc3 Sf6 | 2 |
| E00 | Queen's Pawn Game | 1 d4 Sf6 2 c4 e6 | 2 |
| A05 | Reti Opening | 1 Sf3 Sf6 | 1 |
| A07 | King's Indian Attack | 1 Sf3 d5 2 g3 | 1 |
| A10 | English | 1 c4 | 1 |
| A15 | English | 1 c4 Sf6 | 1 |
| A42 | Modern Defense, Averbakh System | 1 d4 d6 2 c4 g6 3 Sc3 Lg7 4 e4 | 1 |
| A85 | Dutch, with c4 & Nc3 | 1 d4 f5 2 c4 Sf6 3 Sc3 | 1 |
| A91 | Dutch Defense | 1 d4 f5 2 c4 Sf6 3 g3 e6 4 Lg2 Le7 | 1 |
| A96 | Dutch, Classical Variation | 1 d4 f5 2 c4 Sf6 3 g3 e6 4 Lg2 Le7 5 Sf3 O-O 6 O-O d6 | 1 |
| B00 | Uncommon King's Pawn Opening | 1 e4 | 1 |
| B01 | Scandinavian | 1 e4 d5 | 1 |
| B06 | Robatsch | 1 e4 g6 | 1 |
| B17 | Caro-Kann, Steinitz Variation | 1 e4 c6 2 d4 d5 3 Sc3 dxe4 4 Sxe4 Sd7 | 1 |
| B23 | Sicilian, Closed | 1 e4 c5 2 Sc3 | 1 |
| B27 | Sicilian | 1 e4 c5 2 Sf3 | 1 |
| B50 | Sicilian | 1 e4 c5 2 Sf3 d6 | 1 |
| B54 | Sicilian | 1 e4 c5 2 Sf3 d6 3 d4 cxd4 4 Sxd4 | 1 |
| B75 | Sicilian, Dragon, Yugoslav Attack | 1 e4 c5 2 Sf3 d6 3 d4 cxd4 4 Sxd4 Sf6 5 Sc3 g6 6 Le3 Lg7 7 f3 | 1 |
| C14 | French, Classical | 1 e4 e6 2 d4 d5 3 Sc3 Sf6 4 Lg5 Le7 5 e5 Sfd7 6 Lxe7 Dxe7 | 1 |
| C16 | French, Winawer | 1 e4 e6 2 d4 d5 3 Sc3 Lb4 4 e5 | 1 |
| C25 | Vienna | 1 e4 e5 2 Sc3 | 1 |
| C41 | Philidor Defense | 1 e4 e5 2 Sf3 d6 | 1 |
| C50 | Giuoco Piano | 1 e4 e5 2 Sf3 Sc6 3 Lc4 Lc5 | 1 |
| C55 | Two Knights Defense | 1 e4 e5 2 Sf3 Sc6 3 Lc4 Sf6 | 1 |
| C64 | Ruy Lopez, Classical | 1 e4 e5 2 Sf3 Sc6 3 Lb5 Lc5 | 1 |
| D02 | Queen's Pawn Game | 1 d4 d5 2 Sf3 | 1 |
| D26 | Queen's Gambit Accepted | 1 d4 d5 2 c4 dxc4 3 Sf3 Sf6 4 e3 e6 | 1 |
| D30 | Queen's Gambit Declined | 1 d4 d5 2 c4 e6 | 1 |
| D37 | Queen's Gambit Declined | 1 d4 d5 2 c4 e6 3 Sc3 Sf6 4 Sf3 | 1 |
| D45 | Queen's Gambit Declined Semi-Slav | 1 d4 d5 2 c4 e6 3 Sc3 Sf6 4 Sf3 c6 5 e3 | 1 |
| D87 | Grunfeld, Exchange | 1 d4 Sf6 2 c4 g6 3 Sc3 d5 4 cxd5 Sxd5 5 e4 Sxc3 6 bxc3 Lg7 7 Lc4 O-O 8 Se2 c5 | 1 |
| E17 | Queen's Indian | 1 d4 Sf6 2 c4 e6 3 Sf3 b6 4 g3 Lb7 5 Lg2 Le7 | 1 |
| E20 | Nimzo-Indian | 1 d4 Sf6 2 c4 e6 3 Sc3 Lb4 | 1 |
| E61 | King's Indian | 1 d4 Sf6 2 c4 g6 3 Sc3 | 1 |
| E78 | King's Indian, Four Pawns Attack, with Be2 and Nf3 | 1 d4 Sf6 2 c4 g6 3 Sc3 Lg7 4 e4 d6 5 f4 O-O 6 Le2 c5 7 Sf3 | 1 |
