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Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...a6/4. Ba4/4...d6/5. d4

Modern Steinitz Defense
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Position in Forsyth-Edwards Notation (FEN)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4
Parent: Ruy Lopez, Morphy Defence

This is a fine move, but is is well on the way to the Noah's ark trap. Few masters play this move, preferring 5. c3 or castling.

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Chess openings quick reference
1. e4
2. Nf3
With 2...Nc6:
With other 2nd moves:
2. Other
1... other
1. d4
Flank
Unorthodox