Sicilian Scheveningen Tabyia

The position below, White to move, appears after the following move :

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3a6 6. Be2 e6 7. a4 Nc6 8. Be3 Be7 9. O-O O-O 10. f4 Qc7 11. Kh1 Re8



Now, a standard way to play this position with White is develop along this scheme:
Bf3,Qd2,Nb3 and then g4-g5.

Intead, an interesting idea is to play 12 Bd3 !? leading to the following position.



The idea is to target the black king directly through d3-h7, with e4-e5 in mind. Usually Black plays Nb4-d3 to eliminate the White bishop but that is not always enough to equalize.

See a good attacking game below by Jakovenko