12. december 2025
| Eco | Name | First moves | # games |
|---|---|---|---|
| A20 | English | 1 c4 e5 | 2 |
| A47 | Queen's Indian | 1 d4 Sf6 2 Sf3 b6 | 2 |
| A85 | Dutch, with c4 & Nc3 | 1 d4 f5 2 c4 Sf6 3 Sc3 | 2 |
| A17 | English | 1 c4 Sf6 2 Sc3 e6 | 1 |
| A31 | English, Symmetrical, Benoni Formation | 1 c4 c5 2 Sf3 Sf6 3 d4 | 1 |
| A44 | Old Benoni Defense | 1 d4 c5 2 d5 e5 | 1 |
| A45 | Queen's Pawn Game | 1 d4 Sf6 | 1 |
| A52 | Budapest Gambit | 1 d4 Sf6 2 c4 e5 3 dxe5 Sg4 | 1 |
| A57 | Benko Gambit | 1 d4 Sf6 2 c4 c5 3 d5 b5 | 1 |
| A90 | Dutch | 1 d4 f5 2 c4 Sf6 3 g3 e6 4 Lg2 | 1 |
| B22 | Sicilian, Alapin | 1 e4 c5 2 c3 | 1 |
| B23 | Sicilian, Closed | 1 e4 c5 2 Sc3 | 1 |
| B24 | Sicilian, Closed | 1 e4 c5 2 Sc3 Sc6 3 g3 | 1 |
| B25 | Sicilian, Closed | 1 e4 c5 2 Sc3 Sc6 3 g3 g6 4 Lg2 Lg7 5 d3 d6 | 1 |
| B30 | Sicilian | 1 e4 c5 2 Sf3 Sc6 | 1 |
| B32 | Sicilian | 1 e4 c5 2 Sf3 Sc6 3 d4 cxd4 4 Sxd4 e5 | 1 |
| B50 | Sicilian | 1 e4 c5 2 Sf3 d6 | 1 |
| B57 | Sicilian | 1 e4 c5 2 Sf3 d6 3 d4 cxd4 4 Sxd4 Sf6 5 Sc3 Sc6 6 Lc4 | 1 |
| C11 | French | 1 e4 e6 2 d4 d5 3 Sc3 Sf6 | 1 |
| C16 | French, Winawer | 1 e4 e6 2 d4 d5 3 Sc3 Lb4 4 e5 | 1 |
| C30 | King's Gambit Declined | 1 e4 e5 2 f4 | 1 |
| C45 | Scotch Game | 1 e4 e5 2 Sf3 Sc6 3 d4 exd4 4 Sxd4 | 1 |
| C47 | Four Knights | 1 e4 e5 2 Sf3 Sc6 3 Sc3 Sf6 | 1 |
| D07 | Queen's Gambit Declined, Chigorin Defense | 1 d4 d5 2 c4 Sc6 | 1 |
| D10 | Queen's Gambit Declined Slav | 1 d4 d5 2 c4 c6 | 1 |
| D11 | Queen's Gambit Declined Slav | 1 d4 d5 2 c4 c6 3 Sf3 | 1 |
| D13 | Queen's Gambit Declined Slav, Exchange Variation | 1 d4 d5 2 c4 c6 3 Sf3 Sf6 4 cxd5 cxd5 | 1 |
| D30 | Queen's Gambit Declined | 1 d4 d5 2 c4 e6 | 1 |
| D94 | Grunfeld | 1 d4 Sf6 2 c4 g6 3 Sc3 d5 4 Sf3 Lg7 5 e3 | 1 |
| E01 | Catalan, Closed | 1 d4 Sf6 2 c4 e6 3 g3 d5 4 Lg2 | 1 |
| E16 | Queen's Indian | 1 d4 Sf6 2 c4 e6 3 Sf3 b6 4 g3 Lb7 5 Lg2 Lb4+ | 1 |
| E60 | King's Indian Defense | 1 d4 Sf6 2 c4 g6 | 1 |
| E61 | King's Indian | 1 d4 Sf6 2 c4 g6 3 Sc3 | 1 |