1.d4 According to Lucas van Foreest – Beat the Semi-Slav Defens + PGN September 15, 2025

1.d4 According to Lucas van Foreest: Complete Semi-Slav Coverage

GM Lucas van Foreest and GM Pier Luigi Basso have completed another essential component of the comprehensive 1.d4 repertoire with their latest course: 1.d4 According to Lucas van Foreest – Beat the Semi-Slav Defense.

The Semi-Slav Challenge Solved

The Semi-Slav Defense presents one of Black’s most solid and theoretically demanding responses to 1.d4. This course tackles it head-on with the Catalan-style approach using 5.g3, offering White concrete advantages in positions where Black traditionally finds comfortable play.

Van Foreest’s method is characteristically direct: “We play the toughest lines — the ones Black hates to face, system after system.” The g3 setup against the Semi-Slav creates practical problems for Black while maintaining White’s opening initiative.

Course Structure and Content

The course provides systematic coverage through:

• 11 theoretical chapters covering all major Semi-Slav variations
• 30 interactive test positions for practical understanding
• Memory Booster for efficient retention
• Complete video analysis (3 hours, 2 minutes)
• 15-minute repertoire summary by GM van Foreest
• Multilingual PGN files (English, French, German, Spanish)

The theoretical framework spans from closed systems with Be7, Bd6, and Bb4 to the sharp tactical lines arising after 6…b5 7.Ne5 and the critical main line continuation 7…b5 8.e4 Bb7 9.e5 Nd5 10.Ng5.

Building the Complete 1.d4 Repertoire

This Semi-Slav course represents the fifth installment in the systematic 1.d4 series. The complete repertoire now includes:

1. 1.d4 According to Lucas Van Foreest – Exchange Slav for White – Handling the Exchange Slav structure with precision
2. 1.d4 According to Lucas Van Foreest – Fight the Nimzo-Indian – Strategic approach against 4…Bb4+
3. 1.d4 According to Lucas Van Foreest – 1.d4 Nf6 2.c4 g6 3.h4 – The aggressive h4 system against King’s Indian setups
4. 1.d4 According to Lucas van Foreest – Beat the Classical Queen’s Gambit Declined – Classical QGD positions with concrete plans
5. 1.d4 According to Lucas van Foreest – Beat the Semi-Slav Defense – The latest addition covering 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6