In 1918, at Berlin, Milan Vidmar reached for an opening that barely anyone took seriously. It was a pawn sacrifice first tried by the Hungarian master Maróczy in a casual game back in 1896, and Vidmar used it to defeat Akiba Rubinstein — one of the finest technicians the game has ever produced.
That single result pulled the Budapest Gambit out of obscurity and sparked a wave of popularity through the early 1920s. It has been a rare guest at the top ever since.
But the reason Vidmar's idea worked has never gone away. After 1.d4 Nf6 2.c4 e5, Black hands over a pawn and receives, in return, rapid development and pieces that come to life at once.
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3h 22m PGN Download Memory Booster Interactive Tests
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For a long time, 3.f3 against the Caro-Kann lived up to the faintly dismissive name it was given. The Fantasy Variation was treated as a club-level ambush, a line to spring on an unprepared opponent rather than a serious try for an opening advantage. That reputation is now out of date.
Modern engines evaluate many of the critical positions after 1.e4 c6 2.d4 d5 3.f3 as comfortable for White, and the move has crossed over from the world of surprise weapons into the repertoires of top grandmasters. What was once "fantasy" has become a grounded, objectively sound way to fight for the center from the third move.
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1h 48m PGN Download Memory Booster Interactive Tests
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The Modern Benoni was not understood in a single generation. Its defining imbalance — Black concedes space and a central pawn majority to White, and takes in return a queenside majority of his own, active pieces, and the ...b5 and ...f5 breaks — took the chess world decades of practical play to read correctly. That slow accumulation of understanding is exactly what GM Anton Korobov sets out to compress into one training course.
The subtitle is not decoration. Everything in the Benoni flows from a deliberate structural bargain, and the player who grasps that bargain — when the imbalance favours them, and how to convert it — is the player who scores. Theory tells you which moves to make; this course is about the positions those moves produce.
Sequence: Korobov's Modern Benoni »
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The Benoni has always carried a reputation against the fianchetto. Play 3.g3, allow 3...c5, and conventional wisdom says Black has found the right answer — the g3-setup is supposed to be exactly what the Benoni player wants to see.
In The Catalan against an Early ...c5, GM Pier Luigi Basso neither disputes that reputation nor avoids it. He accepts it and turns it around. The Benoni is a good option for Black. It is also, as the course sets out to demonstrate, a very good one for White. The author's own description of the strategy is worth keeping in mind throughout: invite the opponent into your territory, let them believe they have achieved something, and let them regret the choice later.
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2h 11m PGN Download Memory Booster Interactive Tests
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When English club players of the 1980s needed something reliable against the Pirc and Modern, many reached for the same recipe: Be3, Qd2, f3, long castling, and a pawn avalanche with h4-h5. The system picked up a nickname — the 150 Attack — because a player graded around 150 on the old British scale, roughly 1800 today, could handle it without memorising a lot of theory. The plan carried the ideas; the burden on memory stayed light.
Crushing the Modern Defence inherits that logic and gives it grandmaster precision. In the Modern, Black concedes the centre on purpose, intending to strike back at it from the flanks once the hypermodern set-up is complete. Roiz and Arnaudov reply before that plan matures — occupy the centre, castle queenside, and pry open the h-file with h4-h5 while the opponent is still arranging his pieces. In line after line White gains space and leaves Black cramped.
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With 4.Bg5, White tries to change the subject. Rather than the direct 4.e5 that Part 1 was built to answer, the bishop develops and invites the French player onto different ground. Stella's reply, 4...Be7, quietly declines the argument — after 5.e5 the game folds straight back into the Steinitz pawn chain the whole repertoire is built around. The move meant to sidestep the Steinitz becomes another road into it.
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After four months of studying the fundamental structures of the 1.Nf3 complex — Réti and Catalan-type formations, King's Indian and Grünfeld structures, English Opening positions with symmetrical setups, Hedgehog formations and Maróczy-type structures — we are now ready to translate that understanding into concrete theoretical preparation.
In this phase, theory is no longer kept light. We look at concrete move orders and specific variations, where precise theoretical knowledge is required. The bet the whole project has been making is cashed in here: with the typical ideas and structures already familiar, the theory is absorbed quickly rather than memorised painfully.
This first half of the theoretical part covers all Black setups involving the move ...d5.
The material is based on the camp of the same name and is now transformed into a complete digital product, including full video recordings of all lectures, a structured PGN file following the logic of the training sessions, and extensive theoretical analysis for deeper study.
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6h PGN Download
The Opening Builder – Réti for White: Fundamental Structures after 1.Nf3 c5 2.c4 is the fourth part of our six-month Réti project. It continues the work started in the first course on the structures after 1.Nf3 d5 2.g3, the second on 1.Nf3 Nf6 2.c4 e6 3.g3, and the third on 1.Nf3 Nf6 2.c4 g6 3.Nc3.
This part addresses what happens when Black meets our move order with the most independent try of all — 1...c5, steering the game into the English Opening complex. These are among the most flexible and strategically rich positions in modern chess: symmetrical setups, Hedgehog formations, and Maróczy-type structures, all of which are central to a 1.Nf3 repertoire and all of which reward deep structural understanding rather than concrete preparation.
The material is based on the camp of the same name and is now transformed into a complete digital product. It includes full video recordings of all lectures, a structured PGN file that follows the logic of the training sessions, and additional model games and theoretical examples for further study.
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6h PGN Download
Every Classical Sicilian player has a 6.Bg5 file. Ask them to meet it and the answers come quickly, deeply, with confidence. Then White plays 6.Be2, or 6.Bc4, or 6.Be3, or 6.f3 — and the same well-prepared player is suddenly improvising.
These are "sidelines" only because most preparation ignores them, not because they're harmless. Meet one unprepared and the game doesn't crash — it drifts. A natural move here, a slightly worse structure there, until you're defending something you expected to enjoy.
Part of the difficulty is that these tries don't share a single character. 6.Be2 invites a slow, restrained middlegame; 6.Bc4 plants the bishop on Black's most sensitive diagonal; 6.Be3 and 6.f3 point toward the sharp, opposite-side race of English Attack structures. One block of memorized theory was never going to hold them all together, and that is the problem GM Rodrigo Vasquez set out to solve.
He isn't offering new theory to be memorized. He's sharing this material the way he teaches it to his own students — through complete model games, where the plans, the recurring structures, and Black's concrete resources unfold move by move.
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The Scotch Game took its name from a correspondence match played in 1824 between the chess clubs of Edinburgh and London, where the Scottish side struck in the centre with 3.d4. It was a fixture of nineteenth-century play before slipping quietly out of fashion. Then Garry Kasparov brought it back to the very top, wheeling it out in World Championship play and reminding everyone that an early central strike still carries real venom.
That is the spirit GM Mitrabha Guha builds on in The Scotch Game: A Modern Repertoire for White. After 1.e4 e5 2.Nf3 Nc6 3.d4, White challenges Black in the centre at once and plays for active pieces from the very first moves — no slow manoeuvring, no waiting for a plan to arrive.
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2h 48m PGN Download Memory Booster Interactive Tests Computer Practice
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