or
Loading player profile…
FIDE ID 12922072· born 1980 · last updated 5/12/2026
FIDE standard
2036
FIDE rapid
2021
FIDE blitz
2011
Quick name searchFree
Shortlist public Lichess and chess.com accounts for Krefenstein via fuzzy name, country, and rating-band signals. Fastest path; works without sample games.
AI matching by sample game
Searching public databases for known games ofKrefenstein…
Have your own PGNs? You can also paste them below once this finishes; or use Quick name search above to skip this step.
Real tournament games of Sergej Krefenstein from public sources. Select a game to replay it on the board.
All games
+8 =9 -6 · score54% · 23 games
As White
+3 =6 -3 · score50% · 12 games
As Black
+5 =3 -3 · score59% · 11 games
Wirth,Heinz(1984)
Krefenstein,Sergej(2069)0-1
Loading the game…
Select a game
As White
| Event | Games | Dates |
|---|---|---|
| Werner-Ott-Open 2026 | 7 | 2026-08-02 to 2026-08-09 |
| Kurt Richter Mem 2025 | 5 | 2025-10-31 to 2025-11-02 |
| Werner-Ott-Open 2025 | 1 | 2025-08-03 |
| BSV BEM Masters 2025 | 9 | 2025-04-19 to 2025-04-27 |
| 6th Spandau Christmas | 1 | 2023-12-28 |
Prep report
Their repertoire vs yours
Once you have a candidate account, we cross-reference its opening tree against your imported games, surfacing the lines they play that you don’t know, the leaks in their repertoire you can punish, and the gaps in yours you’ll need to plug before the game.
Pick a candidate account above to unlock the report.
As Black
AI matching from found games
We already found 23 of Krefenstein ’s real games in public databases. No PGNs needed: one click shortlists public accounts with similar opening choices.
Sources:twic (23)- latest 8/9/2026
Helps match accounts whose display name is not written in Latin letters.
Costs 1 credit
Uses 1 credit. Results take a few minutes; the results page updates itself.