Sicilian Defence, Najdorf Variation, according to the Encyclopaedia of Chess Openings
With White, Lie has varied between 1.c4 and 1.e4, with Black he prefers sharp defenses such as the Sicilian Defence and Benoni Defense.
Andrew Soltis has dubbed that the "Chameleon System", since White maintains the option of playing a Closed Sicilian with 4.g3 or transposing to a standard Open Sicilian with 4.d4 cxd4 5.Nxd4.
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2.Ne2 is the Keres Variation, a favourite of Paul Keres, and has similar ideas to the Chameleon System discussed under 2.Nc3 – White can follow up with 3.d4 with an Open Sicilian, 3.g3 with a Closed Sicilian, or 3.Nbc3, continuing to defer the choice between the two.
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