This page presents tactics puzzles from Uwe Auerswald's collection, as presented by DejaScacchi; thanks to Kelvin S for supplying a spreadsheet of FEN's. Some puzzles have been omitted because of errors found by Stockfish in the solutions. Select a difficulty and set, then solve all the puzzles.
The interface was cobbled together with chessboard.js (modified by me for my preferred mobile behaviour and by Claude for smoother piece-dragging) and chess.js. Sounds and pieces are from Lichess.