GM Pier Luigi Basso and GM Andrea Stella's bundle covers three openings — the Express Najdorf for Black against 1.e4, the Queen's Gambit Accepted with 3...b5!? against 1.d4, and the Catalan Siege for White — built on a single principle: learn structures, not variations. Across 14 chapters and 30 test positions, the bundle delivers a complete tournament repertoire that a serious player can put to use over a weekend.
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2h 56m PGN Download Memory Booster Interactive Tests
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Sometimes a single move, played almost in passing by an elite grandmaster, contains more poison than a thousand pages of established theory. When GM Luis Supi watched GM Nodirbek Abdusattorov reach for 7.Be2 against the Sveshnikov Sicilian, his first reaction was disbelief. He knows this opening as well as anyone, yet here was a move he had never seriously considered — and the more he searched for a refutation, the clearer it became that there wasn't one. What looked like a casual sidestep turned out to be a genuine, and currently underrated, way to fight one of Black's most reliable defences.
Sequence: Supi vs the Sicilian »
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2h 28m PGN Download Memory Booster Interactive Tests
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When Bobby Fischer called the Paulsen "one of Black's soundest defenses," he was acknowledging something fundamental: flexibility without predictability. Half a century later, GM Harshit Raja's new course revives this principle for the modern game. Where the Najdorf forces immediate concrete knowledge and the Dragon demands theoretical precision move by move, the Paulsen offers something rarer — strategic maneuverability combined with genuine winning chances. Harshit's repertoire is built around 5...a6, a move order that delays ...Qc7 and preserves Black's options across multiple pawn structures.
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4h 50m PGN Download Memory Booster Interactive Tests Computer Practice
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When GM Daniil Dubov unveiled his ...h5 Dragon setup at the elite level, many thought the Yugoslav Attack needed renovation. When Magnus Carlsen started mixing Dragon structures with Najdorf timing via the Dragdorf, others wondered if White's classical approach still held water. The authors of this course — GM Jose Martinez Alcantara, IM Dragos Ceres, and GM Pier Luigi Basso — came to a different conclusion: the Yugoslav Attack doesn't need to be abandoned. It needs to be rebuilt with precision tools that account for every modern deviation Black has invented over the past decade.
Sequence: Jospem versus the Sicilian »
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4h 25m PGN Download Memory Booster Interactive Tests Computer Practice
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When IM Kushager Krishnater set out to create the second installment of his Open Sicilian repertoire, he made a deliberate choice: avoid the mainline theoretical highways where preparation battles are won and lost at move 25. Instead, his approach treats the Sicilian as a strategic battleground where understanding trumps memorization.
Against both 2...e6 and 2...Nc6, Krishnater recommends lines that are fresh, relatively unexplored, and designed to steer opponents away from their home preparation. The philosophy is consistent throughout: choose the move that creates normal Sicilian structures rather than entering forcing variations that reward the player with the stronger engine.
Sequence: Open Sicilian According to Krishnater »
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2h 46m PGN Download Memory Booster Interactive Tests
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The Open Sicilian has always been chess's ultimate proving ground. While theory sprawls endlessly across hundreds of sub-variations, elite preparation has increasingly favored a different approach: flexible, pressure-oriented systems that force opponents into uncomfortable territory early. Rather than memorizing 25 moves deep into established main lines, the modern trend is toward fresh move orders and sideline deviations that retain all the objective punch while amplifying practical discomfort.
IM Kushager Krishnater builds his repertoire on precisely this philosophy. His complete Open Sicilian system after 1.e4 c5 2.Nf3 promises maximum practical pressure without sacrificing theoretical soundness.
Sequence: Open Sicilian According to Krishnater »
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3h 4m PGN Download Memory Booster Interactive Tests
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When GM Vidit Gujrathi sat down to face Alireza Firouzja at the Candidates 2024, he didn't reach for the safe repertoire choices that dominate modern preparation. He played 6.Bc4 — the Sozin Attack — and Firouzja's surprise was visible.
The line Fischer and Kasparov wielded as a weapon had become a rarity at the absolute top. But rarity isn't the same as refutation. As Vidit proved, and as GM Jose Martinez Alcantara and IM Dragos Ceres demonstrate throughout this course, the Sozin remains one of the most concrete and dangerous systems White can employ against the Najdorf and Classical Sicilian structures.
Sequence: Jospem versus the Sicilian »
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3h 27m PGN Download Memory Booster Interactive Tests
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For decades, the Dragon existed in uncertain territory—too dangerous to die, too sharp to be trusted. Bobby Fischer declared it lost. Yet there were always believers, grandmasters who saw something the verdict missed. Now, with modern chess engines rewriting opening theory, those believers are proven right. GM Sina Movahed's new course presents the Dragon not as a rehabilitation project but as a fully operational weapon for Black, armed with the dynamic resources modern engines have finally revealed.
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4h 11m PGN Download Memory Booster Interactive Tests Computer Practice
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When Magnus Carlsen deployed the Sveshnikov to claim the 2018 World Championship tiebreaks, he confirmed what elite players already knew: this system has become Black's most reliable answer to 1.e4. The razor-sharp complications after the mainline 7.Bg5 have been analyzed to exhaustion, turning the opening into a memory contest. But what if White could sidestep the theoretical arms race entirely and still fight for an advantage?
GM Jose Martinez Alcantara and IM Dragos Ceres offer a different path. Their new course, Sveshnikov Sicilian for White - Top-Level Repertoire, centers on 7.Nd5 — a positional approach that trades the knights early and establishes a powerful pawn on d5. This isn't a quiet line: it's an ambitious attempt to dictate the character of the middlegame from move seven. Instead of navigating memorization duels in the 7.Bg5 labyrinth, White builds a strategic framework where understanding matters more than move order recall.
Sequence: Jospem versus the Sicilian »
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2h 54m PGN Download Memory Booster Interactive Tests
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The Kalashnikov variation has long existed in the shadow of its more theoretically demanding sibling, the Sveshnikov. Yet this structural similarity masks a fundamental philosophical difference. Where the Sveshnikov commits Black to theoretical battles starting from move five, the Kalashnikov preserves strategic flexibility by delaying ...Nf6—a seemingly modest adjustment that reshapes the entire character of the position.
GM Vladimir Georgiev and IM Nikola Nikolovski have built their new course around this principle: avoiding White's Bg5 pin and maintaining the option to exchange the dark-squared bishop via ...Be7-Bg5 transforms tactical complications into strategic clarity. The result is a complete repertoire against the Sicilian that works across all levels of play while catching opponents off-guard with its relative rarity.
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5h 31m PGN Download Memory Booster Interactive Tests
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