chess.fixingdeer.com
Tools for the improving player
Live
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Opening Lab

Drill chess openings against a configurable Stockfish engine. Choose the opening you want the engine to play, set the engine strength, and practice the lines that matter to your game.

Live
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Puzzle Mix

Lichess puzzles, your way. Select multiple themes and motifs and drill them in combination — something Lichess itself won't let you do.

Work In Progress
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Chess Moves

Analyze your Chess.com and Lichess games with Stockfish. Identify patterns in your mistakes and track your improvement over time.

Alpha (Expect Issues)
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Puzzle Book

Turn your own blunders into personalized puzzles. Import your games, create puzzles from critical positions, and drill them with spaced repetition until they stick.