Every Sicilian player has felt it: years invested in the Najdorf, the Dragon, or the Classical Sicilian, only to face a 2.Nc3 or 2.c3 from an opponent who clearly knows the position better. The statistics explain why. The Open Sicilian shows up far more often across a career than any single Anti-Sicilian system, so the experience naturally tilts away from these sidelines.
That imbalance is exactly where games get lost — not to superior chess, but to superior preparation in territory the Black player rarely visits.
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4h 3m PGN Download Memory Booster Interactive Tests
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A repertoire built on staying in your own territory
The Rossolimo begins 1.e4 c5 2.Nf3 Nc6 3.Bb5, and Cheparinov's recommendations consistently favour low-risk, low-theory lines that still pose real problems.
Against the main 3...g6 he castles first and inserts 5.Re1, waiting for ...e5 before committing the structure. Against 3...e6 he chooses the immediate 4.Bxc6, then d3 and the rare 6.b3 — placing the bishop on b2 and preparing f4 in a line that has almost no games but plenty of venom.
The headline is that 7.a4 in the 3...g6, 5...e5 main line: queenside space, a fixed pawn target, and the plan Na3–c4 striking at both the e5-pawn and the dark squares. It is new, principled, and stress-tested at elite level by the author himself.
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3h 16m PGN Download Interactive Tests
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For decades the London System has carried a reputation for being quiet, safe, and a touch boring — a system you reach for when you want a calm game rather than a fight.
GM Alexey Dreev opens this course by dismantling that idea from forty years of personal experience. The London, he argues, is far more unpleasant to face than its tame image suggests.
Black has many setups that equalize on paper, yet in nearly all of them he is left untangling small, irritating practical problems move after move. That gap between reputation and reality is the thread running through Part 1, and the goal is stated plainly: by the end, you are the one posing the problems.
Sequence: Dreev's London »
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4h 52m PGN Download Memory Booster Interactive Tests Computer Practice
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"A knight on the rim is dim." Few maxims are drilled into beginners more often — and few are refuted more elegantly than by 7...Na6 in the Classical King's Indian. The knight steps to the edge not to linger there, but to spring into c5, where it pressures e4 while Black's central counterplay gathers force.
That paradox runs through the whole of Part 4. Instead of the dense, move-for-move theory demanded by 7...Nc6 or 7...Nbd7, Black gets a repertoire organized around recurring ideas: the ...Na6–c5 route, the flexible ...Qe7, reinforcing e5 while keeping all options open, and the thematic ...Ng4 and ...f5 breaks. The same plans reappear against almost everything White tries, so understanding carries the load rather than memorization.
Sequence: King's Indian Defense According to Jobava »
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5h 20m PGN Download Memory Booster Interactive Tests Computer Practice
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Nimzowitsch's old advice — take any central pawn if it can be done without too much danger — is the whole justification for the Open Variation. After 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O, 5...Nxe4 grabs the central pawn and keeps the knight aggressively posted. The lost pawn itself is temporary — White recovers it on e5 — so the real struggle is over that knight: neutralise it, as Kalyan puts it, and the position turns in White's favour.
It is a line Arjun Kalyan respects without affection. In his own words, it was one he never considered playing as Black: full of positions where Black suffers yet the engine somehow holds, and a line that demands a great deal of theory from whoever takes it on. Part 2 is built around that tension — how to meet Black's most ambitious, best-prepared replies without walking straight into the theory they have memorised.
Sequence: Arjun's Ruy Lopez »
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2h 28m PGN Download Memory Booster Interactive Tests
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Most repertoires are built on a line the author fell in love with. This one is built on a line the author once ran from. As a Black player, GM Arjun Kalyan found the deferred exchange in the Ruy Lopez so persistently annoying that he eventually switched to the Arkhangelsk just to avoid facing it. Part 1 of his Ruy Lopez series takes that very discomfort and hands it to White.
The thread running through the whole course is timing. After 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7, White captures with 6.Bxc6 — but precisely now, once the bishop has already committed to e7. Black would like nothing more than to recapture and reroute the bishop to d6; instead, it must spend a tempo to get there. The damaged queenside structure and the lasting pressure on e5 are the constants that every chapter returns to.
Sequence: Arjun's Ruy Lopez »
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2h 14m PGN Download Memory Booster Interactive Tests
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Modern French preparation has narrowed. A handful of fashionable tabiyas now absorb most of White's attention, and the analysis around them runs deep. GM Felix Blohberger's second volume goes the other way — down older, classical roads that White players have quietly stopped studying.
That choice is the connective tissue of Part 2, which completes the repertoire begun in Practical French for Black — Part 1. Where the first volume handled 3.Nc3 and the early sidelines, this database covers everything that remains after 1.e4 e6 2.d4 d5: the Advance, the Tarrasch, and the Exchange.
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1h 48m PGN Download Memory Booster Interactive Tests
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For most of its history, 3.exd5 has been the move you play when you are happy to shake hands. Symmetrical pawn structure, an open centre, nothing structural to fight over — the Exchange French earned a reputation as the most peaceful reply to the French, the line you reach for on a tired afternoon. So it means something that one of the most inventive attacking players of his generation has built a serious repertoire with real winning chances.
In The Exchange French — Top-Level Repertoire for White, GM Baadur Jobava and GM Pier Luigi Basso set out to dismantle that cliché. The symmetry, they argue, is deceptive: beneath it lies a structure full of small, durable imbalances, and the better-prepared side can lean on them until they decide the game. This is the Exchange French as a fighting choice, not a truce.
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2h 21m PGN Download Memory Booster Interactive Tests Computer Practice
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For decades, the Vienna Variation asked Black to walk a tightrope. After 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 dxc4 5.e4, the classical road was 5...Bb4, holding the tension with the pin on c3 and the standing threat of ...Nxe4. It worked, but it came wrapped in a thick layer of forcing theory that every well-booked opponent had seen.
Alexander Grischuk reframed the question. Rather than creating and maintaining the tension, why not resolve it at once with 5...b5 — clamping down on the c4-pawn immediately, even before it is properly defended. The point is refreshingly direct: provoke e5, open the b7–h1 diagonal, and develop with ...Bb7 and ...Nc6 at full speed. Material becomes secondary; time, coordination, and pressure on d4 are what matter. The Neo-Vienna - A Dynamic Approach to the Queen's Gambit by GM S. P. Sethuraman is built around exactly this idea.
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4h 22m PGN Download Memory Booster Interactive Tests
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We are excited to introduce English Opening – Jobava’s Repertoire, the latest course by GM Baadur Jobava and GM Pier Luigi Basso. This course provides a complete and aggressive repertoire for Black against the English Opening, based on 1.c4 c5.
This course is the final piece in Jobava’s Full Repertoire for Black Against the Closed Openings, following his two highly successful courses:
1) The Ambitious Queen's Gambit Accepted
2) Jobava London Reversed – Top-Level Repertoire for Black
By combining these three courses, you will have a fully structured and practical repertoire against 1.d4, 1.c4, and all Closed Openings, crafted by one of the most creative and aggressive players of our time, GM Baadur Jobava.
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5h 8m PGN Download Memory Booster Interactive Tests
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