[Event "1974 Canadian Open"]  [Site "Montreal"]  [White "Ljubomir Ljubojevic"]  [Black "Lawrence Day"]  [Result "1-0"]  [ECO "B06"]  [Annotator "ATH"]  [PlyCount "73"]  [EventDate "1974.??.??"]  [EventType "swiss"]  [EventRounds "11"]  [EventCountry "CAN"]  [SourceTitle "Chess Canada 1975.03"]   1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 a6 $5 (4... Nf6 {, transposing into the  Austrian Attack, is best but Day is known for avoiding main lines.}) 5. Nf3 b5  (5... e6 {is better (at least according to Stockfish) but Day is a Canadian  contemporary of Duncan Suttles and plays accordingly}) 6. Bd3 Bb7 (6... Nd7 $5)  7. a4 (7. O-O $1 Nc6 $1 8. Be3 Nf6 (8... e6 $5) 9. d5 $6 (9. e5 $1 $14) 9...  Nb8 10. Qe1 {Czerniak-Szabo, Gothenburg 1971} c6 $1 11. dxc6 Nxc6 $11) 7... b4  8. Ne2 Nd7 (8... c5 $1) 9. c3 $6 (9. O-O c5 10. d5 $14) 9... bxc3 $2 (9... c5  $1 $11) 10. bxc3 c5 11. Rb1 (11. Ng5 $1 $16) 11... Rb8 (11... Qc7 {is slightly  better}) 12. O-O e6 (12... Ba8 $5) (12... cxd4 $6 13. cxd4 Ngf6 $6 (13... Qc7  $16) 14. e5 Nd5 {Ljubojevic-Sznapik, Buenos Aires 1978} 15. e6 $1 $18) 13. f5 (  13. Qe1 $1 $16) 13... gxf5 $2 (13... exf5 14. exf5 Ngf6 15. Ng5 $14) 14. exf5  e5 15. Rxb7 {Pretty and good but not best (or even prettiest)} (15. dxe5 $1  dxe5 16. Ng5 Ngf6 17. Nf4 $1 O-O (17... exf4 $2 18. Nxf7 $1 Kxf7 19. Bc4+ Ke8  20. Re1+ Be4 21. Rxe4+ $1 Nxe4 22. Qh5+ Ke7 23. Qf7+ Kd6 24. Bxf4+ Ne5 25. Rd1+  $18) 18. Nfe6 $1 fxe6 19. fxe6 (19. Nxe6 $2 Qc8 20. Nxf8 Bxf8 $11) 19... c4 (  19... Nb6 $6 20. e7 Qxe7 21. Rxb6 $18) 20. Bxc4 $18) 15... Rxb7 16. Bxa6 (16.  dxe5 Nxe5 17. Bxa6 $18 {is slightly more accurate}) 16... Rc7 $2 (16... Rb6 17.  Bc4 $16) 17. dxe5 Nxe5 18. Bb5+ Kf8 19. Ng5 (19. Bf4 $1 $18) 19... Nf6 (19...  h6 20. Ne4 $18) 20. Nf4 (20. Ng3 $1 $18) 20... Kg8 21. Nd5 $6 (21. Re1 $1 $18)  21... h6 $2 (21... Nxd5 22. Qxd5 $16) 22. Nxf6+ Bxf6 23. Ne4 Kg7 (23... Bg5 24.  Bxg5 hxg5 25. f6 $18 {is ever so slightly better for Black than the move played  }) 24. Bf4 Qe7 $6 (24... c4 {would put up more resistance to no avail}) 25. Re1  h5 (25... Rcc8 {is another unavailing improvement}) 26. h3 Rcc8 27. Re3 Rcd8 ({  Best (but not nearly good enough) is} 27... Kf8) 28. Rg3+ Kf8 (28... Ng6 29.  Qf3 $18) 29. Nxf6 Qxf6 30. Bg5 Qg7 31. Be7+ Kxe7 32. Rxg7 h4 33. Qd5 Kf6 $2 (  33... Rh6 {is a lot better but who cares?}) 34. Rxf7+ $1 Nxf7 35. Qe6+ Kg7 36.  f6+ Kg8 37. Qg4+ 1-0