# Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...a6/4. Ba4/4...Nf6/5. O-O/5...Be7

< Chess Opening Theory‎ | 1. e4‎ | 1...e5‎ | 2. Nf3‎ | 2...Nc6‎ | 3. Bb5‎ | 3...a6‎ | 4. Ba4‎ | 4...Nf6‎ | 5. O-O
Ruy Lopez Main Line
 a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h
Position in Forsyth-Edwards Notation(FEN)

r1bqk2r/1pppbppp/p1n2n2/4p3/B3P3/5N2/PPPP1PPP/RNBQ1RK1

Parent: Ruy Lopez

# Ruy Lopez Main Line

Black chose not to capture White's e-pawn on the previous move, but the threat still hangs over White's head. White typically removes it with 6. Re1. Either 6. Nc3 or 6. d3 would again interfere with White's optimal plan of c3 and d4 (compare the position before 5. O-O).

White can also opt for the fantastically named Delayed Exchange Ruy Lopez Deferred 6. Bxc6!? (deferred with 4. Ba4 and delayed with 5. O-O, or something like that). Compared to the main line of the Exchange Variation, White has wasted a move but Black cannot immediately play ...f6 to hold the e-pawn. In addition, Black's bishop on e7 has been prematurely developed compared to the normal Exchange Variation and is misplaced.

A very offbeat system is the Worrall Attack, 6. Qe2, planning to hold e4 with the queen and move the rook to d1 in preparation for d2-d4, but the reason this is not played more often is that it takes too much time.

## Theory table

For explanation of theory tables see theory table and for notation see algebraic notation.

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7

6 7 8 9
Main Line Re1
b5
Bb3
d6
c3
O-O
h3
Bb7
=
Bxc6
dxc6
d3
Nd7
Nbd2
O-O
Nc4
f6
=
Qe2
b5
Bb3
O-O
c3
d5
d3
Bb7
=
d3
b5
Bb3
d6
=