Dan Keller
Grandfather. Techie. Chess player.
About
Hi! I'm Dan — a former programmer who loves the game of chess. Inspired by my grandkids and using Claude AI and vibe coding I built this site to share tools that help players at every level study, train, and play better.
What's Here
Chess Board
Classic chess — two players, one board. Move pieces, capture the king.
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Game Review
Paste any PGN and replay the game move by move with player info and comments.
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Chess Openings
Browse and study 130+ openings by category or ECO code with Stockfish analysis.
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Daily Puzzle
Solve today's Lichess puzzle of the day — rated tactics with themes and hints.
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Round Robin
Set up a 3-player round robin — auto pairings with balanced colours, live standings, a printable sheet, and recorded games to replay.
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Coordinates Trainer
Learn the board by heart — click the square that matches the coordinate as fast as you can, from White's or Black's side.
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