Prepare against the player you are actually facing
Enter your opponent's FIDE ID. Chess Genie finds their tournament games, merges what chess-results and Lichess broadcasts each hold, and opens with the findings a coach would start from: the lines where they lose ground, the ones they answer from memory, and the move where they usually leave book.
What the preparation shows you
- Findings first, not a database to dig through: The page opens with the lines where their own moves bleed evaluation, the ones they answer from memory, the positions they lose despite a fine eval, and the single moves that threw a game away. Each finding opens the board on that exact line, as the colour you will have.
- When they stop knowing: Broadcast games arrive with clocks, so every move carries how long they took over it. Moves they answer instantly are marked as prepared. A line under the findings says around which move they usually leave book, so you know where the real game begins.
- Your own PGN, scanned on your machine: A club archive or a coach's collection can fill what the public sources miss. The file is read in your browser; only the games that match this player are ever uploaded, and you tick which ones before anything is sent.
- Measured against your repertoire: Every finding says whether you already have a reply prepared. One bar shows how much of their play your repertoire answers, where it has gaps, and where their games end before your lines do. Where you have nothing, one click starts a repertoire from that position.
Where to go next
- Build an opening repertoire: Start one from any weakness you find, then drill it on a schedule before the round.
- Practise an opening: Play the opening you expect against replies taken from real games at your level.
Questions players ask
What do I need to look someone up?
Their FIDE ID, which is on their FIDE profile or on the tournament's pairing page. A free account covers a few lookups a day, and opening a player somebody has already looked up costs nothing.
Will it find every opponent?
Not from public sources alone. Most amateur events publish pairings but never the moves, and players who appear in broadcast events have the deepest coverage. If you have their games in a PGN file, a club archive or a database export, you can add those yourself and the findings update to include them.
How is this different from an opening explorer?
An explorer averages thousands of players and has no clocks. This is one person's own games: the lines that particular opponent chooses, the positions they have handled badly before, and how long they took to reply.
Can I narrow it to recent games, or to strong opponents?
Yes. Limit to the last year or two, or to games against opponents in a rating band, and the findings and the tree are recomputed on that subset. Games the filter cannot judge, undated or unrated, stay in and are counted rather than silently dropped.