iChess - App for PGN Drills : r/chess

iChess - Chess Tactics/Puzzles 5.2.13 Free Download

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tuichess - PGN reader and analysis board web app : r/chess

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If you are beginner to chess, would it be better to play against a grandmaster or someone on your skill level? - Quora

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You can make a chess board with a pack of cards! : r/pics

Train Your Own Chess AI. Watch your creation defeat you, by Logan Spears

GitHub - vitogit/pgn-tactics-generator: Generate chess puzzles / tactics from a pgn file