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FIDE ID 429180 · born 1992 · last updated 5/12/2026
Standard
1900
Rapid
1731
Blitz
1864
Quick name search
Shortlist public Lichess and chess.com accounts for Day 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 of Day…
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Real tournament games of Jonathan A Day from public sources. Select a game to replay it on the board.
All games
+0 =2 -1 · score 33% · 3 games
As White
+0 =1 -0 · score 50% · 1 game
As Black
+0 =1 -1 · score 25% · 2 games
Kudaibergen,Nurlykhan(2141)
Day,Jonathan A(1891)½-½
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As White
As Black
| Event | Games | Dates |
|---|---|---|
| 4NCL Bradford Congress | 2 | 2026-01-24 |
| 13th Split Open 2024 | 1 | 2024-08-03 |
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.
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AI matching from found games
We already found 3 of Day’s real games in public databases. No PGNs needed: one click shortlists public accounts with similar opening choices.
Sources: twic (3) - latest 1/24/2026
Helps match accounts whose display name is not written in Latin letters.
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