12. december 2025
| Eco | Name | First moves | # games |
|---|---|---|---|
| B30 | Sicilian | 1 e4 c5 2 Sf3 Sc6 | 3 |
| A00 | Uncommon Opening | 1 a3, b3, d3, g4, etc. | 1 |
| A02 | Bird's Opening | 1 f4 | 1 |
| A04 | Reti Opening | 1 Sf3 | 1 |
| A20 | English | 1 c4 e5 | 1 |
| A36 | English | 1 c4 c5 2 Sc3 Sc6 3 g3 | 1 |
| B01 | Scandinavian | 1 e4 d5 | 1 |
| B02 | Alekhine's Defense | 1 e4 Sf6 | 1 |
| B07 | Pirc | 1 e4 d6 2 d4 Sf6 | 1 |
| B10 | Caro-Kann | 1 e4 c6 | 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 |
| B46 | Sicilian, Taimanov Variation | 1 e4 c5 2 Sf3 e6 3 d4 cxd4 4 Sxd4 Sc6 5 Sc3 a6 | 1 |
| C29 | Vienna Gambit | 1 e4 e5 2 Sc3 Sf6 3 f4 | 1 |
| C47 | Four Knights | 1 e4 e5 2 Sf3 Sc6 3 Sc3 Sf6 | 1 |
| D00 | Queen's Pawn Game | 1 d4 d5 | 1 |
| D02 | Queen's Pawn Game | 1 d4 d5 2 Sf3 | 1 |
| D15 | Queen's Gambit Declined Slav | 1 d4 d5 2 c4 c6 3 Sf3 Sf6 4 Sc3 | 1 |
| D30 | Queen's Gambit Declined | 1 d4 d5 2 c4 e6 | 1 |
| E16 | Queen's Indian | 1 d4 Sf6 2 c4 e6 3 Sf3 b6 4 g3 Lb7 5 Lg2 Lb4+ | 1 |