| Name: | Niklas Callsen |
| Federation: |  Germany |
| Sex: |
 Male
|
| Born: | 2000 |
 FIDE ID: |
16222113 FIDE Profile |
| Title: | Candidate Master |
| ELO Classic: | 2188 |
| ELO Rapid: | 2086 |
| ELO Blitz: | 2183 |
| Years: | 2023 - 2026 |
| Total Games: | 3 |
| Wins: | 1 (33.33 %) |
| Draws: | 1 (33.33 %) |
| Losses: | 1 (33.33 %) |
| Score: | 50 % |
| Tournament | Date | Elo Avg. | Country |
| 2nd Bundesliga Nord 25-26 | 09/27/2025 | 2373 | Germany |
| 34th Czech Open A 2023 | 07/21/2023 | 2259 |  Czech Republic |
| ECO | Opening | Games |
| B47 | Sicilian, Taimanov (Bastrikov) variation | 1 games |
| ECO | Opening | Games |
| E10 | Queen's pawn game | 1 games |
| A45 | Queen's pawn game | 1 games |
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Callsen, N | 2190 | Sabirov, R | 2133 | 1-0  |
95 | B47 | 2026 | 2nd Bundesliga Nord 25-26 |
|
| Meessen, R | 2214 | Callsen, N | 2190 | ½-½ |
33 | A45 | 2026 | 2nd Bundesliga Nord 25-26 |
|
| Bai, A | 2398 | Callsen, N | 2092 | 1-0 |
45 | E10 | 2023 | 34th Czech Open A 2023 |
|
