Alpinemaster: George Walker and John Cochrane were old friends; Mr. Walker would finance an occasional expedition of Mr. Cochrane's to India, where the latter met Bonnerjee Mohishunder in a local bar. They played hundreds of games, which inspired Cochrane to bring Mohishunder to London; the games of the Indian style led to the nomenclature of the "Indian Defenses", such as the King's Indian Defense, and Queen's Indian Defense. None became 1st tier Chess elite, but Mr. Cochrane was easily the third most powerful Chess master of the era, behind only Alexander McDonnell and Louis Charles Mahi de La Bourdonnais.
1. e4 e5 2. f4 exf4
The King's Gambit - Accepted. This was the most common opening for Romantic era Chess; accepting the gambit is the most direct refutation of it.
3. Nf3 g5 4. Bc4
Philidor's treatment of the King's Gambit - Accepted when Black tries to hang on to the pawn. Today, theory shows the Kiesiritzky Gambit, <4. h4 g4 5. Ne5> to be the most promising continuation for White, though Bc4 will inevitably be played, nonetheless.
4...Bg7 5. o-o h6 6. d4 d6
Fischer likes this system for Black, naturally however, his improvement of 3...d6 is vastly superior. White's classical pawn center will slowly and steadily crush Black with <mobility> here.
7. c3 c6!?
White attempts to fortify against Bg7; however, this move deprives Nb1 of c3. Thus, Black's response 7...c6 is incorrect: there is no need to secure d5 from the Knight's invasion as he cannot make it in the first place!
Slow and speculative. 8. h4 was superior. Also, 8. Qe2 merits note.
This is dangerous. More secure was 8...fxg3 9. hxg3 leaving White with a poor pawn structure: the text move describes <"coffee-house chess">, typical of this era.
Bold! Offering a <Muzio Gambit> (properly known as the Polerio Gambit after the 16th century Master, Giulio Cesere Polerio) whereby White sacrifices a whole Knight for a massive lead in development and long-term initiative.
9...gxf3 10. Qxf3 Qf6
The only reasonable defense as Ne7 is more natural than Nf6.
11. Nd2 Be6 12. d5!
White blocks in his Bishop, yet the idea is strategic in nature; Exchanging pieces will only lead to demise when down such a lofty sum (a whole Knight); rather, as in most gambits, <every move must push for the initiative at a fever-pitch>. Expansion will pave the road to victory while passive exchanges will see White hemorrhage to death.
12...Bd7 13. e5! dxe5
Blowing open the center to seize advantage of the exposed enemy King.
Taking advantage of an in-between tempo gaining move; the Knight is better off posted in the center, as well.
14...Qg6 15. dxc6 Bxc6
White seeks to open the center completely. Bd7-c6 has been activated; yet, this is immaterial compared to the attack building against the enemy King.
Threatening both 17. Bxg7 and 17. Bxf7+! winning the queen.
16...f5 17. Bxg7 Bxe4 18. Rae1!
Pinning the Bishop and <activating the final unit>, cutting through the center like a warm knife through butter.
18...Ne7 19. Rxe4
Again, threatening 19...fxe4 20. Bf7+ winning the Queen.
The point of the Muzio Gambit is simple: all four White pieces are operating at full power, exerting force on the enemy King, while dominating the center (where the unfortunate King resides). It is true that White remains down a Knight for 2 pawns, a theoretically devastating sum. However, when <The Terrasch Theory> is applied, and consideration taken of Nb8/Rh8/Ra8, <all of whom reside upon their home squares>, plus the pinned Ne7 which cannot operate, it is clear, <we can assess this position >.
20...Nbc6 21. Bf7+! Kd8
Not 21...Kf8? Qd7! with Be6++ to follow.
22. Rd1+ Kc7 23. Rd7+ Kb6 24. Qf2+
Black resigns in light of numerous check mating nets... for instance, 24...Ka6 25. Ra4+ Kb5 26. Bc4+!! Kxa4 27. Bb3+ Kb5 28. a4+! Ka6 29. Qc5 Qg5 30. Bc4+!! will wrap things up with a tactical flare after 30...b5 31. Bb5+ Ka5 32. b4+ Nxb4 33. cxb4++.