This is the PGN for the Kan Sicilian B42 and all variations. Every variation has appeared no less than 100 times. Copy and paste this database into a chess program and you have the current repertoire of the opening.

[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 (5... Bc5 6. Nb3 (6. c3)6... Ba7 (6... Be7 7. O-O (7. Nc3 d6) (7. Qg4 g6 8. Qe2 d6 9. O-O Nd7) (7. c4 d6 8. Nc3)(7. Be3)7... d6 8. c4 (8. Qg4 g6)8... Nf6 9. Nc3)7. Qe2 (7. O-O Nc6 (7... Ne7)8. Qe2 d6 9. Be3) (7. Nc3 Nc6 8. Qe2 d6 9. Be3 Nf6) (7. c4 Nc6)(7. Qg4 Nf6 8. Qg3 d6 9. Nc3)7... Nc6 (7... d6)8. Be3 d6 (8... Bxe3 9. Qxe3)) (5... Qc7 6. O-O (6. Nc3 Nc6 (6... Nf6 7. O-O (7. f4 d6 8. O-O Be7) (7. Qe2 d6)(7. Be3 Nc6 (7... b5)8. O-O (8. Qe2)(8. Nb3)8... Ne5 (8... Bd6 9. h3 (9. Nxc6)(9. f4)) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3)9... Bc5 (9... b5 10. f4 Nc4)10. Kh1 (10. Qe2 d6 11. f4 Ng6)10... d6 11. f4 Ng6 12. Qe1)7... Nc6 (7... b5 8. a3 (8. Qe2)8... Bb7) (7... Be7 8. Kh1) (7... Bc5 8. Nb3 Be7 9. f4 d6)(7... d6 8. f4 Be7)8. Be3 (8. Nxc6 dxc6 (8... bxc6 9. Qe2 (9. f4))9. f4)(8. Nb3 Be7 9. f4)8... Ne5 (8... Bd6 9. h3 (9. Nxc6)(9. f4)) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3)9... Bc5 (9... b5 10. f4 Nc4)10. Kh1 (10. Qe2 d6 11. f4 Ng6)10... d6 11. f4 Ned7 (11... Ng6 12. Qe1)) (6... b5 7. O-O Bb7 8. Re1 (8. Qe2))(6... Bc5 7. Nb3 Be7)7. Be3 (7. Nxc6 dxc6 (7... bxc6 8. O-O Nf6 9. Qe2)8. O-O e5 9. f4)(7. Nb3 Nf6 8. O-O Be7 (8... b5))7... Nf6 (7... b5 8. O-O (8. Nxc6 Qxc6 9. O-O Bb7)8... Bb7)8. O-O (8. Qe2)(8. Nb3)8... Ne5 (8... Bd6 9. h3 (9. Nxc6)) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3)9... Bc5 (9... b5 10. f4 Nc4)10. Kh1 (10. Qe2 d6 11. f4 Ng6 12. Nb3 Bxe3+ 13. Qxe3)10... d6 11. f4 Ng6 12. Qe1) (6. c4 Nf6 7. O-O (7. Nc3 Nc6 8. Nxc6 dxc6)7... Nc6 (7... d6 8. Nc3 Nbd7)(7... Be7)8. Nxc6 dxc6 9. f4)(6. Qe2)6... Nf6 (6... Nc6 7. Nxc6 bxc6 (7... dxc6 8. f4)8. c4)(6... b5)7. Qe2 (7. c4 Nc6 (7... d6 8. Nc3 Nbd7)(7... Be7)8. Nxc6 dxc6 9. f4) (7. Nc3 Nc6 (7... b5 8. a3 (8. Qe2)8... Bb7) (7... Be7 8. Kh1) (7... Bc5 8. Nb3 Be7 9. f4 d6)(7... d6 8. f4 Be7 9. Kh1 Nbd7)8. Be3 (8. Nxc6 dxc6 (8... bxc6 9. Qe2 (9. f4))9. f4)(8. Nb3 Be7 (8... b5)9. f4)8... Ne5 (8... Bd6 9. h3 (9. Nxc6)) (8... b5 9. Nxc6 (9. a3)9... Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3)9... Bc5 (9... b5 10. f4 Nc4)10. Kh1 (10. Qe2)(10. f4)10... d6 11. f4 Ng6 12. Qe1) (7. Kh1 d6)(7. Be3 Nc6 8. Nc3 Ne5 (8... Bd6 9. h3 (9. Nxc6)) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3)9... Bc5 (9... b5 10. f4 Nc4 11. Bxc4 Qxc4)10. Kh1 (10. Qe2 d6 11. f4 Ng6)10... d6 11. f4 Ng6 12. Qe1)7... d6 8. c4 (8. f4 Nbd7)8... g6 (8... Be7 9. Nc3 O-O)(8... Nbd7 9. Nc3)9. Nc3 Bg7 10. Rd1 (10. Nf3 O-O)(10. Be3 O-O 11. Rac1)10... O-O 11. Nf3 Nc6 12. h3) (5... Nc6 6. Nxc6 (6. Be3 Nf6 (6... Qc7 7. O-O Nf6 8. Nc3 Ne5 (8... Bd6 9. h3 (9. Nxc6)) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3)9... Bc5 (9... b5 10. f4 Nc4)10. Kh1 (10. Qe2 d6 11. f4 Ng6)10... d6 11. f4 Ng6 12. Qe1)7. O-O Qc7 8. Nc3 Ne5 (8... Bd6 9. h3 (9. Nxc6)(9. f4)) (8... b5 9. Nxc6 (9. a3)9... Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3)9... Bc5 (9... b5)10. Kh1 (10. Qe2 d6 11. f4 Ng6)10... d6 11. f4 Ng6 12. Qe1)(6. Nb3)6... dxc6 (6... bxc6 7. O-O d5 8. c4 Nf6)7. O-O (7. Nd2 e5 8. Nc4 (8. Qh5 Bd6 9. Nc4))7... e5 8. Nd2 Nf6) (5... g6 6. O-O (6. c4 Bg7 7. Nb3 (7. Be3))(6. Nc3 Bg7)6... Bg7 7. Be3 (7. c3)) (5... Qb6 6. Nb3 (6. c3)6... Qc7 7. O-O Nf6) (5... Ne7 6. O-O Nbc6) (5... d6 6. O-O Nf6 7. c4 (7. f4) (7. Nc3 Be7 (7... b5 8. a4 b4 9. Na2)8. Be3 (8. Kh1)8... O-O) (7. Kh1)(7. Qe2)7... Bd7 (7... g6 8. Nc3 Bg7 9. Be3 O-O) (7... Be7 8. Nc3 O-O 9. Be3) (7... b6 8. Nc3 Bb7 9. Qe2)(7... Nbd7 8. Nc3)8. Nc3 Nc6 9. Nxc6 Bxc6) (5... b5 6. O-O Bb7)(5... d5) 6. O-O (6. Nc3 Qc7 7. O-O (7. f4 d6 8. O-O Be7) (7. Qe2 d6)(7. Be3 Nc6 (7... b5)8. O-O (8. Qe2)(8. Nb3)8... Ne5 (8... Bd6 9. h3 (9. Nxc6)(9. f4)9... Bf4) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3 Nfg4)9... Bc5 (9... b5 10. f4 Nc4 11. Bxc4 Qxc4)10. Kh1 (10. Qe2 d6 11. f4 Ng6 12. Nb3)10... d6 11. f4 Ng6 12. Qe1)7... Nc6 (7... b5 8. a3 (8. Qe2)8... Bb7 9. Qe2) (7... Be7 8. Kh1) (7... Bc5 8. Nb3 Be7 9. f4 d6)(7... d6 8. f4 Be7 9. Kh1)8. Be3 (8. Nxc6 dxc6 (8... bxc6 9. Qe2)9. f4)(8. Nb3 Be7 (8... b5)9. f4)8... Ne5 (8... Bd6 9. h3 (9. Nxc6 bxc6)(9. f4)) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3 Nfg4)9... Bc5 (9... b5 10. f4 Nc4 11. Bxc4 Qxc4)10. Kh1 (10. Qe2 d6 11. f4 Ng6 12. Nb3 Bxe3+ 13. Qxe3)10... d6 11. f4 Ng6 12. Qe1) (6. c4 Nc6 (6... Qc7 7. O-O (7. Nc3 Nc6 8. Nxc6 dxc6 9. O-O e5)7... Nc6 (7... d6 8. Nc3 Nbd7)(7... Be7)8. Nxc6 dxc6 9. f4)(6... d6 7. Nc3 Be7 8. O-O O-O 9. Be3 (9. Qe2))7. Nxc6 dxc6 8. O-O e5 9. Nc3)(6. Qe2 d6 7. O-O) 6... Qc7 (6... d6 7. c4 (7. f4) (7. Nc3 Be7 (7... b5 8. a3)8. Be3 (8. Kh1)8... O-O 9. f4) (7. Kh1) (7. Qe2)(7. Be3)7... Bd7 (7... g6 8. Nc3 Bg7 9. Be3 O-O) (7... Be7 8. Nc3 O-O 9. Be3 (9. Qe2)(9. b3)) (7... b6 8. Nc3 Bb7 9. Qe2 (9. f4))(7... Nbd7 8. Nc3)8. Nc3 Nc6 9. Nxc6 Bxc6 10. Qe2 Be7) 7. Qe2 (7. c4 Nc6 (7... d6 8. Nc3 Nbd7)(7... Be7)8. Nxc6 dxc6 9. f4) (7. Nc3 Nc6 (7... b5 8. a3 (8. Qe2)8... Bb7 9. Qe2) (7... Be7 8. Kh1) (7... Bc5 8. Nb3 Be7 9. f4 d6)(7... d6 8. f4 Be7 9. Kh1)8. Be3 (8. Nxc6 dxc6 (8... bxc6 9. Qe2)9. f4)(8. Nb3 Be7 9. f4)8... Ne5 (8... Bd6 9. h3 (9. Nxc6 bxc6)9... Bf4) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3 Nfg4)9... Bc5 (9... b5 10. f4)10. Kh1 (10. Qe2 d6 11. f4 Ng6)10... d6 11. f4 Ng6 12. Qe1) (7. Kh1 d6) (7. Be3 Nc6 8. Nc3 Ne5 (8... Bd6 9. h3 (9. Nxc6 bxc6)(9. f4)9... Bf4) (8... b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2) (8... Nxd4 9. Bxd4 Bc5 10. Bxc5 Qxc5 11. Kh1) (8... Be7 9. Kh1)(8... h5 9. h3 b5)9. h3 (9. Nf3 Nfg4)9... Bc5 (9... b5 10. f4 Nc4 11. Bxc4 Qxc4)10. Kh1 (10. Qe2 d6 11. f4 Ng6 12. Nb3 Bxe3+ 13. Qxe3)10... d6 11. f4 Ng6 12. Qe1)(7. Nd2) 7... d6 8. c4 (8. f4 Nbd7) 8... g6 (8... Be7 9. Nc3 O-O)(8... Nbd7 9. Nc3) 9. Nc3 Bg7 10. Rd1 (10. Nf3)(10. Be3 O-O 11. Rac1) 10... O-O 11. Nf3 *