1 e4 c5 2 Nf3 d6 3 d4 cd 4 Nxd4 Nf6 5 Nc3 g6 6 Be3 Bg7 7 f3 0-0 8 Qd2 Nc6 9 0-0-0
This could be called the new main line, in contrast to the old main line of 9 Bc4. Now if black attempts the maneuver Nc6-e5-c4, white is two tempos ahead of the old main line.
In light of the above comment, Black has to get creative. He is willing to sacrifice a pawn for active play.
10 ed Nxd5 11 Nxc6 bc 12 Bd4
Experience has shown that black gets good play if white accepts the pawn sacrifice. Hence, 12 Bd4 is now preferred by better than 2-1 to 12 Nxd5, and in fact scores 60% for white.
12...e5 13 Bc5 Be6!
Black need not fear giving up the exchange, as he gets the vastly superior position if white plays 14 Bxf8. Black would respond with 14...Qxf8, leaving him with good Queen-side attacking chances.
14 Ne4 Re8 15 h4
15 Nd6 Re7 is toothless for white.
15...h6 16 g4 Qc7 17 g5 h5 18 Bc4 Red8 19 Qf2
Here we come to a fork in the road. Black plays three moves here with about equal frequency, with white scoring in the neighborhood of 60% against each. This is a nice achievement for white, but note that he has had to avoid a series of tempting but innocuous alternatives at various points along the way.
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