Notes by H. N. Pillsbury.

1. 8.exd4 There is nothing to fear from isolating his Queen's Pawn, and moreover his Pieces are given increased freedom of action.
2. 10…Ncb4 The object of the Knight's moves is to keep the adverse Pawn isolated, and at the same time prevent any direct attack upon the King, but they permit the entrance of the White Knight at K 5, where it cannot be easily dislodged. Black could not play P to Q Kt 3 without loss by 11. Kt x Kt, Q x Kt (best); 12. B to K 4, Q to Q 3; 13. Q to B 2, Kt to Kt 5; 14. Q to Kt sq, winning a Pawn at least; but 10. Kt x Kt; 11. P x Kt, P to Q Kt 3; 12. Q to K 2, B to Kt 2; 13. Q to K 4, P to K Kt 3, was not very dangerous for Black, and preferable to the text, which allows too strong an attack.
3. 17.Qh3 Threatening Kt x B P.
4. 19.Rad1 The sacrifice would not be sound at this point: e.g. 19. Kt x B P, K x Kt; 20. Q x K P, ch, K to Kt 2; 21. Kt x Kt, Kt x Kt (best); 22. B x Kt, B x B; 23. Q to K 5, ch, K to B 2, and will win.
5. 22.Rxc3 White can now win by 22. Kt x B P, K x Kt; 23. Q x K P, ch, K to Kt 2; 24. Q to B 7, ch, K to R sq; 25. R x B, and wins; or if 22. Q x Q P; 23. P x Kt, Q to K Kt 5; 24. Kt to R 6, ch, and wins.
6. 22…Qxd4 B to Q 4 was imperative now, and gave Black a good game.
7. 27.bxc3 Kt to B 5 is met by R x B, and Black would win.
8. 28…Nxc3 B to Q B sq gave Black some hope; the text move should lose at once.
9. 29.Bb3 29. Kt to B 5 wins here in all variations.
10. 30.Kf1 If now, 30. Kt to B 5, Kt to K 7, ch; 31. K to R sq, P x Kt; 32. B x B, Black obtains a winning superiority by B x P, ch, &c.
11. 31.Bc4 Again Kt to B 5 wins, if in reply B to R 3, ch; 32. K to Kt sq, Kt to K 7, ch; 33. K to R sq, P x Kt; 34. Q x P, ch, K to K 2; 35. B x B, and must win; and if Black in this variation 33. Queen moves anywhere; 34. Q to R 6, ch, forcing mate in a few moves.
12. 31…b5 Of course a frightful error, which loses at once.