Instructive game 11:- W.Spoelman–C.Vandewalle

Example of the The Max Lange Gambit form the book Dangerous Weapons - 1 e4 e5 by G.M. John Emms

[Event "Hengelo"] [Site "?"] [Date "2000.??.??"] [Round "?"] [White "W.Spoelman"] [Black "C.Vandewalle"] [Result "1-0"] [ECO "C50"] [Annotator "John Emms"] [PlyCount "42"] [EventDate "2000.??.??"] [Source "Everyman Chess"] [SourceDate "2010.04.23"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d4 Bxd4 6. Nxd4 Nxd4 7. f4 $1 { Being able to play this pawn break is the main idea behind the gambit. Black now has to deal with the threat to e5, and capturing on f4 is of course impossible.} Nc6 $2 {At first sight it looks sensible enough to retreat the knight to defend e5, especially since after 8 fxe5 Nxe5 Black gains a tempo by attacking the c4-bishop. Indeed, some strong players have tried this move. But there is a fatal flaw...} 8. Bxf7+ $1 Kxf7 9. fxe5 Nxe5 10. Qd5+ {DANGEROUS WEAPON: White regains the piece and reaches an overwhelming position. Black has no time to organize a proper defence around his unsafe king.} Kf8 ({After} 10... Ke8 11. Qxe5+ Qe7 {White should simply take the pawn with} 12. Qxc7 {. In the game K.Czerniecki-D.Shapiro, Chicago 1989, Black restored material parity by grabbing on e4, but after} Nxe4 13. Nc3 Qc5+ 14. Qxc5 Nxc5 15. Nb5 Ne6 16. Bf4 d5 17. Rae1 {he wasn't able to survive.}) 11. Qxe5 d6 12. Qg3 { White's plan is simple: Bg5, Nc3-d5 and possibly also Rae1 with e4-e5. It's not much of a surprise that Black can do little to stop this.} ({According to my database, the strongest player to fall for this trap in a tournament game is the 2600+ rated Alexej Aleksandrov. In his game White opted for the equally good} 12. Qd4 {, and following} Be6 13. Bg5 c5 14. Qe3 h6 15. Bxf6 gxf6 16. Nc3 Qe7 17. e5 dxe5 18. Qxe5 (18. Ne4 $1) 18... Bf7 19. Qxe7+ Kxe7 20. Rae1+ Kf8 21. Rxf6 {White gained a winning advantage in G.Jacob-A.Aleksandrov, Senden 1999, although the Belarussian GM did manage to salvage a draw against his much lower-rated opponent.}) 12... Qe7 13. Nc3 Be6 14. Bg5 Ke8 ({Or} 14... Kf7 15. Rae1 Rhe8 16. e5 dxe5 17. Rxe5 {, and Ne4 is up next.}) 15. Rae1 Rf8 16. Nd5 (16. e5 dxe5 17. Qxe5 {is just as good.}) 16... Qd8 17. e5 {And this is simply crushing!} dxe5 18. Rxe5 Qc8 19. Rxe6+ $1 Kd7 20. Re7+ Kd8 21. Bxf6 gxf6 1-0