Nimzowitsch Defence Against 1.e4
1.Nf3 - Practical Repertoire for White

Catalan Opening - Three Repertoires for Black 

October 1, 2025 Catalan Opening1.d4

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3h and 23min PGN Download Memory Booster Video Content


Content  (29 Articles)

Introduction and Free Preview  Free
Chapter 1 - Video Lecture  Closed
Chapter 1 - Dardha's Nc6-Bd6 system - 7th sidelines  Closed
Chapter 1 - Memory Booster  Closed
Chapter 2 - Video Lecture  Closed
Chapter 2 - Dardha's Nc6-Bd6 system - 7.Nc3 / cxd5 / Bg5  Closed
Chapter 2 - Memory Booster  Closed
Chapter 3 - Video Lecture  Closed
Chapter 3 - Dardha's Nc6-Bd6 system - 7.b3 / Nbd2  Closed
Chapter 3 - Memory Booster  Closed
Chapter 4 - Video Lecture  Closed
Chapter 4 - Blohberger's 6...a5 - Overview  Closed
Chapter 4 - Memory Booster  Closed
Chapter 5 - Video Lecture  Closed
Chapter 5 - Blohberger's 6...a5 - 7th move alternatives  Closed
Chapter 5 - Memory Booster  Closed
Chapter 6 - Video Lecture  Closed
Chapter 6 - Blohberger's 6...a5 - 7.Qc2 Mainline  Closed
Chapter 6 - Memory Booster  Closed
Chapter 7 - Video Lecture  Closed
Chapter 7 - Gavrilescu's 5...Bd7 - 5.Qa4+ and sidelines  Closed
Chapter 7 - Memory Booster  Closed
Chapter 8 - Video Lecture  Closed
Chapter 8 - Gavrilescu's 5...Bd7 - 6.Ne5 part 1  Closed
Chapter 8 - Memory Booster  Closed
Chapter 9 - Video Lecture  Closed
Chapter 9 - Gavrilescu's 5...Bd7 - 6.Ne5 part 2  Closed
Chapter 9 - Memory Booster  Closed
Test Section  Closed

79.00 EUR

Catalan Opening — Three Repertoires for Black

Round 2 of the Autumn Challenge 2025 Begins

The votes have been counted, and Modern Chess proudly announced the top three finalists of the Autumn Challenge: GM Daniel Dardha, GM Felix Blohberger, and GM David Gavrilescu.

After an intense first round where seven grandmasters competed with their repertoires against the London System and Jobava London, the chess community has spoken. Now, these three elite players present their weapons against one of the most sophisticated openings in modern chess — the Catalan Opening.

This is not simply the next step in the competition. It's an opportunity to arm yourself with three distinct, practical, and deeply analyzed anti-Catalan systems, each reflecting the unique style and preparation philosophy of its author.

What You Get in This Course

Catalan Opening — Three Repertoires for Black delivers complete coverage against the Catalan, featuring:

Each grandmaster brings a different approach to fighting the Catalan, ensuring you have multiple tools depending on your style and the demands of the position.

The Roadmap of Variations

GM Daniel Dardha — The Nc6-Bd6 System

Dardha presents a rare and sophisticated setup based on 4...Nc6 5.Bg2 Bd6, challenging White's typical plans from an unexpected angle.

Catalan-Dardha-3c4578d618

This system allows Black to keep the structure intact with ...Bd6 and ...Nc6, avoiding many of White's typical Catalan plans while maintaining flexibility for ...dxc4 and ...e5 breaks.

GM Felix Blohberger — The 6...a5 Surprise Weapon

Blohberger advocates for 6...a5, a modern and rare continuation popularized by Magnus Carlsen and validated by engine analysis.

Catalan-Blohberger-733385213e

The beauty of this system lies in its flexibility: Black gains queenside space, prevents White's b3 fianchetto in many lines, and can adopt either a closed setup with ...c6 and ...b6, or the sharp ...a4 advance that leads to unbalanced positions with practical winning chances.

GM David Gavrilescu — The 5...Bd7 Paradox

Staying true to his promise of "something rare, something strange," Gavrilescu delivers 5...Bd7, a line championed by super-GM Arjun Erigaisi.

Catalan-Gavrilescu-8fcdd9e92e

This provocative system challenges the Catalan's central philosophy by developing the bishop to d7, then trading it for White's key Bg2. The resulting positions are sharp, concrete, and often feature opposite-side castling with mutual attacks — perfect for ambitious players seeking complexity.

How Round 2 Voting Works

By purchasing this course, you receive your second voting code to determine the ultimate winner of the Autumn Challenge.

Within 24 hours after your order, you will receive by email your unique 7-digit voting code. Enter this code at https://chessmega.com/voting/ to cast your vote for your favorite repertoire. Each code can only be used once.

⚠️ Voting for Round 2 closes on 15.10.2025 at 23:59 Paris time.

Challenge Timeline — Final Stage

01.10.2025 → Release of Catalan Opening — Three Repertoires for Black + Voting opens (Round 2)
15.10.2025 → Voting closes (Round 2) at 23:59 Paris time
16.10.2025 → Live YouTube Show: Final results & Winner announcement
25.11.2025 → Winner's course released (free for everyone who voted in both rounds)

Why You Should Join Round 2

The Autumn Challenge has reached its decisive stage. Three grandmasters remain. Three different philosophies. One winner.

Get your course, receive your voting code, and decide who becomes the champion.

The outcome is in your hands.