27 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Kostyukovich, Ivan | Braren, Ove Neelis | 0-1 | C54 | Round 11: Kostyukovich, Ivan - Braren, Ove Neelis | 2026-06-27 |
| Kostyukovich, Ivan | Yrysov, Timur | 1/2-1/2 | B84 | Round 9: Kostyukovich, Ivan - Yrysov, Timur | 2026-06-25 |
| Kostyukovich, Ivan | Stern, Mason Jesse | 1-0 | B01 | FIDE World Cadets Cup, O12 | 2026-06-23 |
| Kostyukovich, Ivan | Schroeder, Liam Maddox | 1-0 | B01 | Round 5: Kostyukovich, Ivan - Schroeder, Liam Maddox | 2026-06-20 |
| Kostyukovich, Ivan | Yuan, Shunzhe | 0-1 | B43 | Round 3: Kostyukovich, Ivan - Yuan, Shunzhe | 2026-06-18 |
| Kostyukovich, Ivan | Bolashakov, Nurali | 0-1 | B72 | Round 1: Kostyukovich, Ivan - Bolashakov, Nurali | 2026-06-16 |
| Kostyukovich, Ivan | Levacic, Matic | 0-1 | C00 | Round 5: Kostyukovich, Ivan - Levacic, Matic | 2025-07-09 |
| Kostyukovich, Ivan | Radovic, Koca | 1-0 | C54 | Round 11: Kostyukovich, Ivan - Radovic, Koca | 2024-11-26 |
| Kostyukovich, Ivan | Gostautas, Antanas | 1/2-1/2 | C15 | Round 9: Kostyukovich, Ivan - Gostautas, Antanas | 2024-11-24 |
| Kostyukovich, Ivan | Yao, Lucas Mason Pin Qian | 0-1 | D00 | Round 7: Kostyukovich, Ivan - Yao, Lucas Mason Pin Qian | 2024-11-22 |
| Kostyukovich, Ivan | Nikitakis, Michail | 0-1 | C58 | Round 5: Kostyukovich, Ivan - Nikitakis, Michail | 2024-11-19 |
| Kostyukovich, Ivan | Nguyen Quang Anh | 1/2-1/2 | A67 | Round 3: Kostyukovich, Ivan - Nguyen Quang Anh | 2024-11-17 |
| Kostyukovich, Ivan | Zilincan, Tomas | 1-0 | A40 | Round 1: Kostyukovich, Ivan - Zilincan, Tomas | 2024-11-15 |