411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...c5/2. Nf3/2...a6/3. c4
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Maróczy Bind
Sicilian Defence, O'Kelly Variation, Maróczy Bind
Moves:1.e4 c5 2.Nf3 a6 3.c4
This is White's most aggressive approach against the O'Kelly Variation, setting up a Maróczy Bind.
/3...e6/ is most commonly played at the master level. White usually replies 4. Nc3.
/3...d6/ and /3...Nc6/ are also playable.
References
Sicilian Defence