Ukraine
Male
FIDE ID:
Viktor Matviishen
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| CCCSA Fall GMA 2025 | 11/21/2025 | 2393 |  United States |
| Texas Collegiate Finals | 10/25/2025 | 2399 | United States |
| 12th Washington Int 2025 | 08/09/2025 | 2310 | United States |
| Marshall Summer Inv GMA | 07/08/2025 | 2439 | United States |
Viktor Matviishen Opening Repertoire with White pieces
| ECO | Opening | Games |
| D85 | Gruenfeld, exchange variation | 10 games |
| D10 | Queen's Gambit Declined Slav defence | 8 games |
| E10 | Queen's pawn game | 7 games |
| D30 | Queen's gambit declined | 6 games |
Viktor Matviishen Opening Repertoire with Black pieces
| ECO | Opening | Games |
| B90 | Sicilian, Najdorf | 11 games |
| E15 | Queen's Indian, 4.g3 | 9 games |
| E00 | Queen's pawn game | 5 games |
| A07 | Reti, King's Indian attack (Barcza system) | 5 games |
