Library/Openings/Philidor Defense/Nimzowitsch/Locock Variation ECO C41
Opening· 7 plies

Philidor Defense: Nimzowitsch, Locock Variation

An entry in the Encyclopedia of Chess Openings (ECO C41), reached after 7 half-moves: 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Ng5.

Philidor Defense: Nimzowitsch, Locock Variation ECO C41
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Black rook
Black knight
Black bishop
Black queen
Black king
Black bishop
Black rook
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black knight
Black pawn
White knight
White pawn
White pawn
White pawn
White pawn
White pawn
White pawn
White pawn
White pawn
White rook
White knight
White bishop
White queen
White king
White bishop
White rook
7/7
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  5. 3.
  7. 4.
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End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

Philidor Defense: Nimzowitsch, Locock Variation is an opening in the Encyclopedia of Chess Openings, classified under code C41. 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 7 half-moves from the starting position, with the move sequence 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Ng5.

It belongs to the Philidor Defense family. Within that family this is a level-2 branch (the Nimzowitsch → Locock Variation line).

The opening sequence in prose form: 1.e4 e5, 2.Nf3 d6, 3.d4 Nf6, 4.Ng5. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.