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Chess Opening Theory/1. e4/1...Nf6/2. e5/2...Nd5/3. d4/3...b5
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Alekhine's Defence rd nd bd qd kd bd rd pd pd pd pd pd pd pd pd nd pl pl pl pl pl pl pl pl rl nl bl ql kl bl nl rl
Alekhine Defense: O'Sullivan Gambit
Black sacrifices their pawn to bring White's bishop to a vulnerable square. White's strongest move is to accept the gambit, although it can be ignored with a developing move like 4. Nf3 or 4. c4.
Theory table
.
'1.e4 Nf6 2.e5 Nd5 3.d4 b5'
3
...
d6
=
'1.e4 Nf6 2.e5 Nd5 3.d4'
3
...
e6
=
References
Alekhine's Defence