The Lichess Opening Puzzles with games makes them searchable from any position

One open Lichess database is the Puzzle database, which currently contains 5.8 million puzzles.
The primary characterization of a puzzle is the starting position (FEN). The database is formatted in CSV.
Of the 5.8 million puzzles, 1.2 million are opening puzzles.

Last week, I converted the 5.8-million-puzzle Lichess database into a game-based format. This allows me to search for tactical patterns from any opening position, rather than relying on the broad ECO classification in the Lichess Puzzle database.
Below you see a position from the Evans Gambit. A simple reference search shows there are 186 Lichess Puzzles after 7... dxc3.

Note: I am using ChessBase screenshots below to demonstrate the 'reference search' in the new 1.2 million 'games-puzzle database' because this is currently not possible in Lichess.

When I open a game, it looks as follows: 18... Qd7 is the first move of the puzzle. In the header, you can see the solution: 19. Bxf7 Kh8 20. Qf8#.

I find this information useful to find typical tactical patterns and vulnerabilities in openings.

You can download the 1.2 million Lichess Opening Puzzles with this LINK.

Database exports are released under the Creative Commons CC0 license.
Use them for research, commercial purposes, publication, or anything you like.
You can download, modify, and redistribute them without asking for permission.
https://youtu.be/GSj69yLmwMg