| Eco | Name | First moves | # games |
|---|
| D00 | Queen's Pawn Game | 1 d4 d5 | 6 |
| A40 | Queen's Pawn Game | 1 d4 | 3 |
| A57 | Benko Gambit | 1 d4 Sf6 2 c4 c5 3 d5 b5 | 2 |
| A85 | Dutch, with c4 & Nc3 | 1 d4 f5 2 c4 Sf6 3 Sc3 | 2 |
| B15 | Caro-Kann | 1 e4 c6 2 d4 d5 3 Sc3 | 2 |
| B30 | Sicilian | 1 e4 c5 2 Sf3 Sc6 | 2 |
| D02 | Queen's Pawn Game | 1 d4 d5 2 Sf3 | 2 |
| D04 | Queen's Pawn Game | 1 d4 d5 2 Sf3 Sf6 3 e3 | 2 |
| E43 | Nimzo-Indian, Fischer Variation | 1 d4 Sf6 2 c4 e6 3 Sc3 Lb4 4 e3 b6 | 2 |
| A06 | Reti Opening | 1 Sf3 d5 | 1 |
| A13 | English | 1 c4 e6 | 1 |
| A24 | English, Bremen System with ...g6 | 1 c4 e5 2 Sc3 Sf6 3 g3 g6 | 1 |
| A25 | English | 1 c4 e5 2 Sc3 Sc6 | 1 |
| A34 | English, Symmetrical | 1 c4 c5 2 Sc3 | 1 |
| A38 | English, Symmetrical | 1 c4 c5 2 Sc3 Sc6 3 g3 g6 4 Lg2 Lg7 5 Sf3 Sf6 | 1 |
| A46 | Queen's Pawn Game | 1 d4 Sf6 2 Sf3 | 1 |
| A48 | King's Indian | 1 d4 Sf6 2 Sf3 g6 | 1 |
| A50 | Queen's Pawn Game | 1 d4 Sf6 2 c4 | 1 |
| A51 | Budapest Gambit | 1 d4 Sf6 2 c4 e5 | 1 |
| A81 | Dutch | 1 d4 f5 2 g3 | 1 |
| A88 | Dutch, Leningrad, Main Variation with c6 | 1 d4 f5 2 c4 Sf6 3 g3 g6 4 Lg2 Lg7 5 Sf3 O-O 6 O-O d6 7 Sc3 c6 | 1 |
| B00 | Uncommon King's Pawn Opening | 1 e4 | 1 |
| B03 | Alekhine's Defense | 1 e4 Sf6 2 e5 Sd5 3 d4 | 1 |
| B20 | Sicilian | 1 e4 c5 | 1 |
| B21 | Sicilian, 2.f4 and 2.d4 | 1 e4 c5 2 f4 | 1 |
| B28 | Sicilian, O'Kelly Variation | 1 e4 c5 2 Sf3 a6 | 1 |
| B50 | Sicilian | 1 e4 c5 2 Sf3 d6 | 1 |
| C02 | French, Advance | 1 e4 e6 2 d4 d5 3 e5 | 1 |
| C10 | French | 1 e4 e6 2 d4 d5 3 Sc3 | 1 |
| C20 | King's Pawn Game | 1 e4 e5 | 1 |
| C24 | Bishop's Opening | 1 e4 e5 2 Lc4 Sf6 | 1 |
| C27 | Vienna Game | 1 e4 e5 2 Sc3 Sf6 3 Lc4 Sxe4 | 1 |
| C28 | Vienna Game | 1 e4 e5 2 Sc3 Sf6 3 Lc4 Sc6 | 1 |
| C41 | Philidor Defense | 1 e4 e5 2 Sf3 d6 | 1 |
| C56 | Two Knights | 1 e4 e5 2 Sf3 Sc6 3 Lc4 Sf6 4 d4 exd4 5 O-O Sxe4 | 1 |
| C57 | Two Knights | 1 e4 e5 2 Sf3 Sc6 3 Lc4 Sf6 4 Sg5 | 1 |
| C77 | Ruy Lopez | 1 e4 e5 2 Sf3 Sc6 3 Lb5 a6 4 La4 Sf6 | 1 |
| C78 | Ruy Lopez | 1 e4 e5 2 Sf3 Sc6 3 Lb5 a6 4 La4 Sf6 5 O-O | 1 |
| D05 | Queen's Pawn Game | 1 d4 d5 2 Sf3 Sf6 3 e3 e6 | 1 |
| D08 | Queen's Gambit Declined, Albin Counter Gambit | 1 d4 d5 2 c4 e5 | 1 |
| D11 | Queen's Gambit Declined Slav | 1 d4 d5 2 c4 c6 3 Sf3 | 1 |
| D37 | Queen's Gambit Declined | 1 d4 d5 2 c4 e6 3 Sc3 Sf6 4 Sf3 | 1 |
| D38 | Queen's Gambit Declined, Ragozin Variation | 1 d4 d5 2 c4 e6 3 Sc3 Sf6 4 Sf3 Lb4 | 1 |
| D78 | Neo-Grunfeld, 6.O-O c6 | 1 d4 Sf6 2 c4 g6 3 g3 d5 4 Lg2 Lg7 5 Sf3 O-O 6 O-O c6 | 1 |
| D94 | Grunfeld | 1 d4 Sf6 2 c4 g6 3 Sc3 d5 4 Sf3 Lg7 5 e3 | 1 |
| E32 | Nimzo-Indian, Classical | 1 d4 Sf6 2 c4 e6 3 Sc3 Lb4 4 Dc2 | 1 |
