[Event "Berlin"] [Site "Berlin"] [Round "0"] [White "Anderssen"] [Black "Dufresne"] [Result "1-0"] [ECO "C51"] [Opening "Evans Gambit Accepted"] {This is called the Evergreen Game} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 { Evans Gambit. A Gambit is an opening where one side sacrifices material for other advantages. eg. central control, developmnt advantage, making the opponents king unsafe.} 4... Bxb4 5. c3 Ba5 6. d4 exd4 7. O-O d3 (7... dxc3 8. Qb3 {Attacking f7, Black's weakest square at the start of a game}) (7... Nge7 { intending to castle and get his king safe} 8. cxd4 { and White has great central control}) 8. Qb3 { ignoring Black's pawn on d3 which can be won at any time, and attacks f7} 8... Qf6 9. e5 Qg6 {Black has to keep defending f7} 10. Re1 Nge7 { Black wants to castle} 11. Ba3 b5 { Black gives back a pawn in order to activate some of his pieces} 12. Qxb5 Rb8 13. Qa4 Bb6 14. Nbd2 Bb7 15. Ne4 {Now White threatens to play Bxd3, when he would be able to play a discovered attack on Black's queen, by moving the knight on e4} 15... Qf5 {Black threatens White's e-pawn which is annoying Blacks position in it's advance position} 16. Bxd3 Qh5 (16... Nxe5 { would be a mistake because of} 17. Nd6+ {winning Black's queen}) 17. Nf6+ { Black has to take the knight as it's forking Black's king and queen} 17... gxf6 18. exf6 {Now White will regain the piece as the knight on e7 is pinned} 18... Rg8 {Black starts an attack of his own. He threatens White's knight on f3 } 19. Rad1 Qxf3 {Diagram # Threatening checkmate on g2} (19... Rxg2+ 20. Kxg2 Ne5 21. Qxd7+ Kf8 (21... Nxd7 22. Rxe7+ Kf8 (22... Kd8 23. Rxd7+ Ke8 24. Re7+ Kf8 25. Re5+ Kg8 26. Rxh5 {White is 2 pieces up}) 23. Re5+ Kg8 24. Rxh5 { White is a piece up}) (21... Kxd7 22. Bg6+ Kc8 23. Bxh5 { White is rook for knight ahead}) 22. Qxe7+ Kg8 23. Be4 {White is a rook up}) 20. Rxe7+ Nxe7 {Diagram #} (20... Kd8 21. Rxd7+ Kc8 (21... Ke8 22. Re7+ Kd8 ( 22... Kf8 23. Re3+ Nb4 24. Qxb4+ c5 25. Qxc5+ Bxc5 26. Bxc5#)) (21... Kxd7 22. Bf5+ {double check} 22... Ke8 23. Bd7+ Kd8 24. Bxc6+ Qxd1+ (24... Kc8 25. Bd7+ Kd8 26. Be7#) 25. Qxd1+ Kc8 26. Qd7#)) (20... Kf8 21. Re3+ {discovered check} 21... d6 22. Rxf3 {White is queen for knight ahead}) 21. Qxd7+ { A fantastic sacrifice} 21... Kxd7 (21... Kf8 22. Bxe7#) 22. Bf5+ { Double check...the king has to move} 22... Ke8 (22... Kc6 23. Bd7#) 23. Bd7+ Kf8 (23... Kd8 24. Bxe7#) 24. Bxe7# 1-0