Four Knights Game: Scotch Variation Accepted

An entry in the Encyclopedia of Chess Openings (ECO C47), reached after 8 half-moves: 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4.

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5.Nxd4 1 line
- C47 Main Line

About this opening

Four Knights Game: Scotch Variation Accepted is an opening in the Encyclopedia of Chess Openings, classified under code C47. ECO group C (C00–C99) covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached after 8 half-moves from the starting position, with the move sequence 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4.

It belongs to the Four Knights Game family. Within that family this is a sub-variation (the Scotch Variation Accepted line).

The opening sequence in prose form: 1.e4 e5, 2.Nf3 Nc6, 3.Nc3 Nf6, 4.d4 exd4. From this position exactly one named continuation is recorded in the encyclopaedia.