C71: Ruy Lopez: Deferred Steinitz Variation, sidelines

1. e4 e5 2. Nf3 White threatens to win material: Nf3xe5 2... Nc6 3. Bb5 a6 Black threatens to win material: a6xb5 4. Ba4 d6 5. d4 White threatens to win material: d4xe5 5... b5 Black threatens to win material: b5xa4 6. Bb3 Nxd4 7. Nxd4 exd4 8. Bd5 White threatens to win material: Bd5xa8 Inferior is 8. Qxd4 c5 9. Qd2 c4-/+ 8... Rb8 9. Qxd4 Bd7 10. c3 10. a4 Nf6+/= 10... Nf6= 11. O-O Be7 12. f4 White plans e5 12. Bf4 O-O= 12... c6 Black threatens to win material: c6xd5 13. Bb3 O-O Black castles and improves king safety 14. f5 White has a new backward pawn: e4 14. Bc2 Qc7= 14... Qe8 14... Re8 15. Bc2=/+ 15. Bc2= d5 15... b4!?= 16. e5+/= White threatens to win material: e5xf6 16... Bd8 17. Kh1 >= 17. Be3!? looks like a viable alternative 17... Bb6 18. Qf4= 17... Bb6=/+ 18. Qf4 Bc7 19. Re1 Bc8 19... >= Ne4!? would keep Black alive 20. Bxe4 Bxe5=/+ 20. Nd2+/- Nd7 20... >= Bb7 21. Qh4 Bxe5+/- 21. Nf3?? throwing away the advantage >= 21. f6 Bxe5 22. Qh4+/- 21... f6=/+ Black threatens to win material: f6xe5 22. Qg4 22. exf6 Bxf4 23. Rxe8 Rxe8 24. Bxf4 Rb7 25. fxg7 Nf6=/+ 22... Nxe5 22... fxe5 23. b4-/+ 23. Nxe5? 23. Qh3 b4-/+ 23... Bxe5 23... >= fxe5!? 24. Be3 e4-+ 24. Bh6 Qf7 25. Bf4 Re8 26. Re2 26. Be3 a5-/+ 26... Bd7 26... b4 27. Bxe5 fxe5 28. c4-+ 27. Rae1 Bxf4 28. Qxf4 Rxe2 29. Rxe2 Re8 30. Qf3 30. Re3 a5-+ 30... Rxe2 30... Re5 31. b4-+ 31. Qxe2 Qe8 32. Qf2 32. Qxe8+ Bxe8 33. b4 Bh5-/+ 32... Qe5 33. h3 Kf7 34. Kg1 c5 34... Qe7 35. Qd2-+ 35. Qxc5 Bxf5 36. Bb3 Be6 36... >= Be4-+ and Black gets the upper hand 37. Qa7+= White forks: a6+f7 37... Kg6 38. Qxa6 Qe1+ 39. Kh2 Qe4 40. Kg1 Qe1+ 40... Qe1+ 41. Kh2 Qe2= 1/2-1/2 [Fritz 9 (5s)]