The ChessDummy blog
How the popular opening trainers compare, and how to learn openings that you will still remember in your next game.
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Comparison
ChessDummy vs Chessable: which one helps you learn openings?
Chessable teaches openings through authored courses and spaced repetition. ChessDummy teaches them inside your own chess.com and lichess games. Here is how they differ and who each one suits.
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Roundup
The best chess opening trainers in 2026, compared
Chessable, Chessbook, Lichess studies, Chess.com, Listudy, Chess Tempo and ChessDummy: what each opening trainer is good at, what it costs, and which one fits how you like to learn.
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Comparison
ChessDummy vs Chessbook: build a repertoire, or learn from your games?
Chessbook helps you build and memorise your own opening repertoire. ChessDummy gives you opening feedback inside your chess.com and lichess games. A plain comparison of the two.
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Guide
How to learn chess openings without memorising a book
You do not need to memorise hundreds of lines. Pick one opening for each situation, learn the ideas, and fix one mistake after every game. A practical routine for players rated up to 1800.
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Fair play
Can you use an opening book during online chess games?
Opening books are allowed in daily and correspondence games on chess.com and lichess, and not in live games. What the rules say, and how to set up ChessDummy so that you stay inside them.
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