The main position to analyze is after the moves
1 e4 b6 2 d4 Bb7 3 Nc3 e6 4 Nf3 Bb4 5Bd3 Nf6
Owen Defense B00. Nc3,Nf3,Bd3 lines for white , ..b6,..Bb7,e6,Bb4 for Black
Nc3 gives more options to Black versus quick Bd3,Qe2 with c3/Nd2 options
1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Nf3 Bb4 5. Bd3 Nf6 [#] 6. Qe2!? ( 6. Bg5!? d6 7. O-O Bxc3 8. bxc3 h6 9. Bxf6 Qxf6 10. Nd2 [#] to play f2-f4 10... e5 ( 10... g5 11. Qe2 e5 12. Qe3 Nd7 13. Bb5 O-O-O 14. a4 a5 ½- (17) ½ (60) Konstantinos Nikolaidis-Artashes Minasian Panormo GRE 1998 ) 11. f4 [#] ( 11. Bb5+!? c6 12. Be2 Nd7 13. Nc4 Rd8 14. Qc1 O-O 15. Qa3 ) 11... exf4!? ( 11... Qe7 12. Qg4 O-O 13. Nc4 Nd7 14. Ne3 Nf6 15. Qxg7+ Kxg7 16. Nf5+ Kh8 17. Nxe7 exd4 18. e5 David-Bauer 2005 ) 12. Bb5+ ( 12. g3 g5 13. a4 Nc6 14. Qe2 O-O-O Black is doing well here 15. a5 ( 15. Ba6 Na5 ) 15... Nxa5 16. Ba6 Bxa6 17. Qxa6+ Kd7 18. Nc4 Spassky-Miles 1983 ) 12... Kf8 13. g3 g5 ) ( 6. Nd2!? interesting sideline for white 6... d5 ( 6... d6 7. Ncb1!? Bxd2+ 8. Nxd2 e5 9. d5 c6 10. c4 Nbd7 Bellaiche-Short 2018 11. b3 O-O 12. O-O Nc5 13. Bc2 cxd5 14. exd5 b5 15. Bb2 Rc8 16. Kh1 ) ( 6... c5!? 7. a3 cxd4 8. axb4 dxc3 9. bxc3 Qc7 10. c4 d6 11. O-O Nbd7 Ding-Nepo 2019 ) 7. e5 Ne4 8. Qg4!? Kf8 9. Ncxe4 dxe4 10. Bc4 ) 6... d5 7. exd5 ( 7. e5?! Ne4 8. O-O Nxc3 9. bxc3 Bxc3 10. Rb1 pawn sacrifice 10... Nc6 11. Ba3 ( 11. Qe3 Bb4 12. Qf4 h6 13. Bb5 Be7 14. Qg4 g6 15. c3 Nakamura-Gareev 2015 ) 11... Nxd4 12. Nxd4 Bxd4 13. Rfd1 a6 14. c4 Qg5 ( 14... c5! ) 15. c5 Qxe5 16. Qc2 b5 -/+ 1-0 (29) Kurt Pommerening-Gerd Matrisch Germany 1980 [thechesscorner,@gmail.com] ) 7... Qxd5 ( 7... Nxd5 8. Bd2 Nxc3 9. bxc3 Be7 10. a4 Nd7 11. a5!? ( 11. O-O O-O 12. Rfd1 ) 11... c5 12. O-O O-O 13. Bf4 bxa5 14. Rfd1 Bd5 15. Nd2 h6 16. c4 Bc6 17. c3 ) 8. O-O Bxc3 9. bxc3 O-O 10. Bf4 with chances for both sides 10... Rc8 11. Rfe1 c5 12. dxc5 Qxc5 13. c4 Nbd7 [#] 14. a4 Re8 15. a5 e5 16. Be3 Qc7 17. Bf5 1-0 (37) Bareev (2709)- Bauer (2612) 2001 *
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