【Requested video】White Lion system vs Queenside castling

BGM : Summer Essentials / SK music

Game URL for analysis by yourself :

1. d3 d5 2. Nf3 Nc6 3. Nbd2 e5 4. e4 d4 5. c3 Nf6 6. Qc2 Bg4 7. Be2 Qd7 8. a4 O-O-O 9. a5 Bxf3 10. Nxf3 a6 11. O-O h6 12. cxd4 Nxd4 13. Nxd4 Qxd4 14. Be3 Qb4 15. Rfc1 Bd6 16. Bb6 Rd7 17. Ra4 Qb5 18. Rc4 Ne8 19. Bg4 Kb8 20. Bxd7 Qxd7 21. Be3 Nf6 22. f3 g5 23. Kh1 g4 24. fxg4 Nxg4 25. Bg1 Rg8 26. h3 Nf6 27. Qf2 Qe6 28. Qa7+ Kc8 29. Qa8+ Kd7 30. Qxb7 Ne8 31. Qxa6 Qg6 32. R4c2 Nf6 33. Qb7 Rc8 34. Bb6 Ne8 35. a6 Qf6 36. a7 Qd8 37. d4 exd4 38. e5 Bxe5 39. Qd5+ Bd6 40. Re2 Qe7 41. a8=Q Rxa8 42. Qc6+ Kd8 43. Qxa8+ Kd7 44. Rxe7+ Bxe7 45. Qc6+ Kd8 46. Bxc7+ Nxc7 47. Qxc7+ Ke8 48. Re1 Kf8 49. Rxe7 Kg8 50. Rxf7 d3 51. Qe7 d2 52. Qf8#