Chess Prep Pro product updates and practical chess opening training guides.https://chesspreppro.com/blog/en-ieFri, 21 Aug 2026 17:00:00 GMThttps://chesspreppro.com/blog/chess-repertoire-for-blitz-rapid-classical/https://chesspreppro.com/blog/chess-repertoire-for-blitz-rapid-classical/The same opening is a different proposition at three minutes and at ninety. Most players never adjust, and it costs them.Fri, 21 Aug 2026 17:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/fen-explained-for-chess-players/https://chesspreppro.com/blog/fen-explained-for-chess-players/FEN is the companion to PGN. PGN records a game, FEN records a single position, and knowing it saves a surprising amount of time.Fri, 21 Aug 2026 16:00:00 GMTGuidesToolshttps://chesspreppro.com/blog/lichess-study-to-chess-repertoire/https://chesspreppro.com/blog/lichess-study-to-chess-repertoire/Importing a study takes seconds. Turning it into something that survives in memory takes three deliberate steps.Fri, 21 Aug 2026 15:00:00 GMTGuidesToolshttps://chesspreppro.com/blog/why-training-results-differ-from-game-results/https://chesspreppro.com/blog/why-training-results-differ-from-game-results/Training asks an easier question than a game does. Knowing exactly how it is easier tells you how to close the gap.Fri, 21 Aug 2026 14:00:00 GMTGuidesTraininghttps://chesspreppro.com/blog/understanding-versus-memorising-chess-openings/https://chesspreppro.com/blog/understanding-versus-memorising-chess-openings/You need both, and they fail in different ways. Knowing which one you are short of tells you what to do next.Fri, 21 Aug 2026 13:00:00 GMTGuidesTraininghttps://chesspreppro.com/blog/should-you-copy-a-grandmaster-repertoire/https://chesspreppro.com/blog/should-you-copy-a-grandmaster-repertoire/Copying the moves is easy. The conditions that make those moves work are the part nobody hands over.Fri, 21 Aug 2026 12:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/chess-system-openings/https://chesspreppro.com/blog/chess-system-openings/System openings trade variety for repetition. That is a real saving and a real limit, and both are worth understanding before you commit.Fri, 21 Aug 2026 11:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/when-your-opponent-leaves-opening-theory/https://chesspreppro.com/blog/when-your-opponent-leaves-opening-theory/You will be out of preparation more often than in it. Four defaults get you a normal position with better pieces.Fri, 21 Aug 2026 10:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/how-to-annotate-your-chess-repertoire/https://chesspreppro.com/blog/how-to-annotate-your-chess-repertoire/Most repertoire notes repeat what the engine said. The useful ones record the reason, which is the part you will have forgotten.Fri, 21 Aug 2026 09:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/openings-that-stop-working-as-you-improve/https://chesspreppro.com/blog/openings-that-stop-working-as-you-improve/Far more openings grow with you than collapse. The ones that collapse have something specific in common.Thu, 20 Aug 2026 23:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/how-to-add-a-trap-to-your-repertoire/https://chesspreppro.com/blog/how-to-add-a-trap-to-your-repertoire/Traps are worth having and easy to overweight. One rule keeps them in proportion.Thu, 20 Aug 2026 22:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/scholars-mate-and-how-to-stop-it/https://chesspreppro.com/blog/scholars-mate-and-how-to-stop-it/Scholar's Mate is the first trap almost everyone meets. The interesting part is not how it works, but how quickly it stops.Thu, 20 Aug 2026 21:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/every-chess-trap-works-once/https://chesspreppro.com/blog/every-chess-trap-works-once/Opening traps have a measurable expiry date. Knowing where it falls tells you how much of your study time they deserve.Thu, 20 Aug 2026 20:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/what-a-chess-engine-is-for/https://chesspreppro.com/blog/what-a-chess-engine-is-for/An engine answers a question about the position. It answers no question about you, which is why the highest evaluation is often the wrong choice.Thu, 20 Aug 2026 19:00:00 GMTGuidesToolshttps://chesspreppro.com/blog/masters-or-online-games-database/https://chesspreppro.com/blog/masters-or-online-games-database/Master games concentrate on best play. Online games spread across everything playable. Which you prepare against depends on who you are playing.Thu, 20 Aug 2026 18:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/most-popular-move-is-not-the-best-move/https://chesspreppro.com/blog/most-popular-move-is-not-the-best-move/Opening statistics show what people play, not what is correct. The difference between the two is the most useful thing in the database.Thu, 20 Aug 2026 16:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/chess-opening-transpositions/https://chesspreppro.com/blog/chess-opening-transpositions/Move orders are the most common reason a line you know refuses to come back. Thinking in positions rather than sequences fixes it.Thu, 20 Aug 2026 15:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/chess-repertoire-debt/https://chesspreppro.com/blog/chess-repertoire-debt/The positions in your repertoire that you have never actually trained are not preparation. They are a bill you have not paid.Thu, 20 Aug 2026 14:00:00 GMTGuidesTraininghttps://chesspreppro.com/blog/when-to-prune-a-chess-repertoire/https://chesspreppro.com/blog/when-to-prune-a-chess-repertoire/Rarity is not the same as harmlessness. A method for cutting a repertoire back without losing the lines you actually need.Thu, 20 Aug 2026 13:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/how-big-should-a-chess-opening-repertoire-be/https://chesspreppro.com/blog/how-big-should-a-chess-opening-repertoire-be/The size of a repertoire is not a matter of ambition. It is set by how much review time you have, and the arithmetic is simple enough to do once.Thu, 20 Aug 2026 12:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/how-deep-to-study-a-chess-opening/https://chesspreppro.com/blog/how-deep-to-study-a-chess-opening/Depth in an opening repertoire has a cost and a falling return. The multiplication that shows where the line is worth stopping.Thu, 20 Aug 2026 11:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/how-often-to-review-chess-openings/https://chesspreppro.com/blog/how-often-to-review-chess-openings/A review schedule for opening lines, with the actual intervals and the reasoning behind each one.Thu, 20 Aug 2026 10:00:00 GMTGuidesTraininghttps://chesspreppro.com/blog/why-you-forget-chess-openings/https://chesspreppro.com/blog/why-you-forget-chess-openings/Recognising a move as correct and finding it yourself are two different abilities. Opening study usually trains the wrong one.Thu, 20 Aug 2026 09:00:00 GMTGuidesTraininghttps://chesspreppro.com/blog/pgn-files-explained-for-chess-players/https://chesspreppro.com/blog/pgn-files-explained-for-chess-players/PGN is the plain-text format every chess program agrees on. Here is what is inside one and how to move your games between apps.Tue, 18 Aug 2026 09:00:00 GMTGuidesToolshttps://chesspreppro.com/blog/how-to-choose-which-chess-openings-to-play/https://chesspreppro.com/blog/how-to-choose-which-chess-openings-to-play/Choosing openings is a decision about what kind of positions you want to play, not about which line the engine likes best.Fri, 14 Aug 2026 09:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/chess-opening-principles-that-actually-matter/https://chesspreppro.com/blog/chess-opening-principles-that-actually-matter/Five opening principles that carry most of the weight in the first ten moves, explained in terms of what they are actually for.Mon, 10 Aug 2026 09:00:00 GMTGuidesOpeningshttps://chesspreppro.com/blog/introducing-smart-train-science-backed-spaced-repetition-for-chess-openings/https://chesspreppro.com/blog/introducing-smart-train-science-backed-spaced-repetition-for-chess-openings/Smart Train adds performance-based spaced repetition to Chess Prep Pro, helping you focus practice on repertoire positions that need more attention.Sat, 09 Aug 2025 10:00:00 GMTApp UpdatesAndroidiOShttps://chesspreppro.com/blog/chess-prep-pro-now-in-multiple-languages/https://chesspreppro.com/blog/chess-prep-pro-now-in-multiple-languages/Chess Prep Pro has added translations for players around the world, including translated downloadable repertoires and annotations.Wed, 19 Feb 2025 08:00:00 GMTApp UpdatesTranslationshttps://chesspreppro.com/blog/chess-prep-pro-now-optimized-for-landscape-mode-perfect-for-tablets-and-ipads/https://chesspreppro.com/blog/chess-prep-pro-now-optimized-for-landscape-mode-perfect-for-tablets-and-ipads/Landscape mode makes Chess Prep Pro easier to use on larger screens, with more room for repertoire review, analysis, and training.Sat, 05 Oct 2024 14:27:22 GMTApp UpdatesiOSAndroidhttps://chesspreppro.com/blog/chess-prep-pro-now-available-on-ios-new-features-and-updates/https://chesspreppro.com/blog/chess-prep-pro-now-available-on-ios-new-features-and-updates/The iOS version of Chess Prep Pro received the features already available on Android, including repertoire downloads and expanded training tools.Sat, 24 Aug 2024 14:27:22 GMTApp UpdatesiOS