Blindfolded but not blind

John Saunders’ BritBase has a newly added PGN file: all 10 games from Sergio Mariotti’s blindfold simultaneous exhibition, Bayswater Chess Club, January 17, 1971, which were published in Bayswater Chess, Vol. 1, Nos. 3-4, June-September 1971.

Sergio Mariotti – Simon Spivack
10-board blindfold simultaneous exhibition; London, January 17, 1971
Two Knights Defence C57

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5?! 5. ... Na5! (Kieseritzky) is by far Black’s best line here.

6. d4! 6. Nxf7!? is the Fried Liver Attack, but the Lolli Attack (6. d4!) “is so strong that 5. ... Nxd5 is practically extinct”, Bobby Fischer asserted in My 60 Memorable Games, Simon and Schuster, New York, 1969, p. 281.
6. ... Be7 7. Nxf7 Kxf7 8. Qf3+ Ke8? If nothing, less complacent is 8. ... Ke6 9. Nc3 Bb4? (9. ... Nxd4 10. Bxd5+ Kd6 11. Qd3±) 10. Bxd5+ Kd6 11. Bxc6 Bxc3+ 12. bxc3 bxc6 13. Ba3+ (13. 0-0 Be6 14. dxe5+ Kd7 15. Rd1+ Bd5 16. c4 Rf8 17. Qh3+ 1–0 R. J. Fischer – Snuske, 58-board simultaneous exhibition, Flint 1964) 13. ... Ke6 14. 0-0 Qd5 15. Qh5 e4 16. Qh4 g5 17. Qh5 Qf5 18. f3 Qg6 19. Qg4+ Qf5 20. Qxf5+ Kxf5 21. fxe4+ Kxe4 22. Rae1+ Kd5 23. Re5+ 1–0 R. J. Fischer – Gruenberg, 54-board simultaneous exhibition, Chicago 1964.
9. Bxd5 Rf8. If 9. ... Nxd4 then 10. Qf7+ Kd7 11. 0-0 h6 12. Nc3 Qf8 13. Qh5 Qf5 14. Qd1 Qxc2 15. Qg4+ Qf5 16. Qxg7 Qf6 17. Qg4+ Kd8 18. Qd1 Qg6 19. Be3 c6 20. Be4 Qf6 21. f4 c5 22. Nd5 Qg7 23. b4 Rg8 24. Nxe7 Kxe7 25. fxe5 Bh3 26. Rf2 Rad8 27. Qh5+− R. J. Fischer – Heckathorn, 40-board simultaneous exhibition, Wichita 1964.
10. Bxc6+ bxc6 11. Qh5+ g6 12. Qxe5. So White has come out with two Pawns ahead and a comparatively easy game to win.
12. ... Rf6 13. 0-0 Qd6 14. Qxd6 cxd6 15. Nc3 d5 16. Bg5 Re6 17. Bxe7 Rxe7 18. Rfe1 Bf5 19. Rxe7+ Kxe7 20. Re1+ Kf6 21. Re2 Rb8 22. b3 g5 23. Na4 Bg6 24. Nc5 Re8 25. Rxe8 Bxe8 26. f3 Kf5 27. Kf2 Bg6 28. c3 h5 29. Ke3 Bf7 30. Na6 1–0.