Three Knights Opening · C46

Steinitz-Rosenthal Variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 g6 4. d4 exd4 5. Nd5

An early pawn trade leaves the d-file as White's avenue and the e-file as Black's - both sides get real winning chances down their own file. Black comes out ahead on material - White needs concrete play to justify it.

The first 4 moves, explained

• 1. e4 Stakes a claim in the centre, controlling d5, and frees the bishop and queen.
• 1... e5 Stakes a claim in the centre, controlling d4, and frees the bishop and queen.
• 2. Nf3 Develops the knight to f3, eyeing d4 and e5.
• 2... Nc6 Develops the knight to c6, eyeing d4 and e5. It also props up the e5 pawn.

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