| Eco | Name | First moves | # games |
|---|
| D02 | Queen's Pawn Game | 1 d4 d5 2 Sf3 | 4 |
| B06 | Robatsch | 1 e4 g6 | 3 |
| A00 | Uncommon Opening | 1 a3, b3, d3, g4, etc. | 2 |
| B01 | Scandinavian | 1 e4 d5 | 2 |
| B02 | Alekhine's Defense | 1 e4 Sf6 | 2 |
| B22 | Sicilian, Alapin | 1 e4 c5 2 c3 | 2 |
| D00 | Queen's Pawn Game | 1 d4 d5 | 2 |
| E11 | Bogo-Indian Defense | 1 d4 Sf6 2 c4 e6 3 Sf3 Lb4+ | 2 |
| A01 | Nimzovich-Larsen Attack | 1 b3 | 1 |
| A04 | Reti Opening | 1 Sf3 | 1 |
| A07 | King's Indian Attack | 1 Sf3 d5 2 g3 | 1 |
| A10 | English | 1 c4 | 1 |
| A34 | English, Symmetrical | 1 c4 c5 2 Sc3 | 1 |
| A40 | Queen's Pawn Game | 1 d4 | 1 |
| A45 | Queen's Pawn Game | 1 d4 Sf6 | 1 |
| A47 | Queen's Indian | 1 d4 Sf6 2 Sf3 b6 | 1 |
| A51 | Budapest Gambit | 1 d4 Sf6 2 c4 e5 | 1 |
| A56 | Benoni Defense | 1 d4 Sf6 2 c4 c5 | 1 |
| A80 | Dutch | 1 d4 f5 | 1 |
| B11 | Caro-Kann, Two Knights, 3...Bg4 | 1 e4 c6 2 Sc3 d5 3 Sf3 Lg4 | 1 |
| B12 | Caro-Kann Defense | 1 e4 c6 2 d4 | 1 |
| B13 | Caro-Kann, Exchange | 1 e4 c6 2 d4 d5 3 exd5 cxd5 | 1 |
| B17 | Caro-Kann, Steinitz Variation | 1 e4 c6 2 d4 d5 3 Sc3 dxe4 4 Sxe4 Sd7 | 1 |
| B51 | Sicilian, Canal-Sokolsky (Rossolimo) Attack | 1 e4 c5 2 Sf3 d6 3 Lb5+ | 1 |
| B54 | Sicilian | 1 e4 c5 2 Sf3 d6 3 d4 cxd4 4 Sxd4 | 1 |
| B83 | Sicilian | 1 e4 c5 2 Sf3 d6 3 d4 cxd4 4 Sxd4 Sf6 5 Sc3 e6 6 Le2 | 1 |
| C00 | French Defense | 1 e4 e6 | 1 |
| C25 | Vienna | 1 e4 e5 2 Sc3 | 1 |
| C33 | King's Gambit Accepted | 1 e4 e5 2 f4 exf4 | 1 |
| C65 | Ruy Lopez, Berlin Defense | 1 e4 e5 2 Sf3 Sc6 3 Lb5 Sf6 | 1 |
| C92 | Ruy Lopez, Closed | 1 e4 e5 2 Sf3 Sc6 3 Lb5 a6 4 La4 Sf6 5 O-O Le7 6 Te1 b5 7 Lb3 O-O 8 c3 d6 9 h3 | 1 |
| D03 | Torre Attack (Tartakower Variation) | 1 d4 d5 2 Sf3 Sf6 3 Lg5 | 1 |
| D04 | Queen's Pawn Game | 1 d4 d5 2 Sf3 Sf6 3 e3 | 1 |
| D07 | Queen's Gambit Declined, Chigorin Defense | 1 d4 d5 2 c4 Sc6 | 1 |
| D09 | Queen's Gambit Declined, Albin Counter Gambit, 5.g3 | 1 d4 d5 2 c4 e5 3 dxe5 d4 4 Sf3 Sc6 5 g3 | 1 |
| D11 | Queen's Gambit Declined Slav | 1 d4 d5 2 c4 c6 3 Sf3 | 1 |
| D55 | Queen's Gambit Declined | 1 d4 d5 2 c4 e6 3 Sc3 Sf6 4 Lg5 Le7 5 e3 O-O 6 Sf3 | 1 |
| E77 | King's Indian | 1 d4 Sf6 2 c4 g6 3 Sc3 Lg7 4 e4 d6 5 f4 O-O 6 Le2 | 1 |
