Semi-Slav Defense · D31

Noteboom Variation, Anti-Noteboom Gambit

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. g3

An early pawn trade leaves the c-file as White's avenue and the d-file as Black's - both sides get real winning chances down their own file. Black keeps the extra pawn; White plays for time, open lines, and initiative - the classic gambit trade.

The first 4 moves, explained

• 1. d4 Stakes a claim in the centre, controlling e5, and frees the bishop and queen.
• 1... d5 Stakes a claim in the centre, controlling e4, and frees the bishop and queen.
• 2. c4 Challenges the pawn on d5 - the central tension has to resolve. The pawn is genuinely on offer - this is the Queen's Gambit: development and initiative over material.
• 2... e6 Supports the centre, adding control of d5. Theory calls this the Queen's Gambit Declined.

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