[Event "San Francisco Leighton Memorial"]
[Site "San Francisco"]
[Date "2015.08.25"]
[Round "4"]
[White "Drane, Robert W"]
[Black "Pfefer, Jonathan"]
[Result "0-1"]
[ECO "B18"]
[WhiteElo "1885"]
[PlyCount "76"]
[EventDate "2015.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. N1e2 e6 7. Nf4 Bd6 8. h4 Qc7 9. Nxg6 hxg6 10. Ne4 Be7 11. Qf3 Qa5+ 12. Bd2 Qf5 13. Bf4 Nf6 14. Bd3 Nxe4 15. Bxe4 Qa5+ 16. Bd2 Bb4 17. c3 Be7 18. a3 Rxh4 19. Rxh4 Bxh4 20. 0-0-0 Bg5 21. Rh1 Bh6 22. Bxh6 gxh6 23. d5 Qd8 24. dxe6 Qg5+ 25. Kc2 fxe6 26. Qd3 Nd7 27. Bxg6+ Ke7 28. Rh5 Ne5 29. Rxg5 Nxd3 30. Rg3 Nxf2 31. Rf3 Rf8 32. Rxf8 Kxf8 33. Kd2 Ng4 34. Ke2 Ne5 35. Bc2 Ke7 36. b3 c5 37. Be4 b6 38. Ke3 Kf6 0-1

[Event "San Francisco Leighton Memorial"]
[Site "San Francisco"]
[Date "2015.08.18"]
[Round "3"]
[White "Pfefer, Jonathan"]
[Black "Winslow, Elliott C"]
[Result "0-1"]
[ECO "B43"]
[BlackElo "2283"]
[PlyCount "82"]
[EventDate "2015.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Bc5 7. Nb3 Be7 8. 0-0 Nf6 9. f4 d6 10. Qe2 Nbd7 11. Bd2 b5 12. Rae1 b4 13. Nd1 Bb7 14. Kh1 d5 15. Nf2 dxe4 16. Nxe4 0-0 17. c3 Nxe4 18. Bxe4 Bxe4 19. Qxe4 Nf6 20. Qf3 a5 21. Rc1 Qd7 22. Rfd1 Qa4 23. Ra1 Rad8 24. Nd4 Rd5 25. g4 bxc3 26. Bxc3 Rfd8 27. g5 Ne8 28. b3 Qd7 29. Rd2 e5 30. fxe5 Bxg5 31. Rg2 h6 32. Rf1 Rxe5 33. Nf5 Rd5 34. Ba1 Rd1 35. Ne7+ Kh8 36. Rxg5 Rxf1+ 37. Qxf1 hxg5 38. Qxf7 Qd1+ 39. Kg2 Qg4+ 40. Kf1 Rd1+ 41. Kf2 Rd2+ 0-1

[Event "San Francisco Leighton Memorial"]
[Site "San Francisco"]
[Date "2015.08.10"]
[Round "2"]
[White "Newey, Richard H"]
[Black "Pfefer, Jonathan"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "1790"]
[PlyCount "76"]
[EventDate "2015.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. c4 e6 3. Nf3 d5 4. cxd5 cxd5 5. Bb5+ Bd7 6. Bxd7+ Qxd7 7. e5 Nc6 8. 0-0 Rc8 9. a3 Qc7 10. d4 Qb6 11. Nc3 Nge7 12. Qd3 Ng6 13. Bd2 Na5 14. Na4 Qb3 15. Qxb3 Nxb3 16. Rad1 Rc4 17. Nc3 Nxd4 18. Nxd4 Rxd4 19. f4 Bc5 20. Kh1 Rd3 21. g3 0-0 22. Na4 b6 23. Bc3 Rxd1 24. Rxd1 Rc8 25. Bd4 Bxd4 26. Rxd4 Rc1+ 27. Kg2 Rc2+ 28. Kh3 b5 29. Nc3 Rxb2 30. a4 a6 31. axb5 axb5 32. Nd1 Rb3 33. Kg4 Ne7 34. Rd2 g6 35. Rc2 Nf5 36. Kg5 Kg7 37. Nf2 h6+ 38. Kg4 Ne3+ 0-1

[Event "San Francisco Leighton Memorial"]
[Site "San Francisco"]
[Date "2015.08.04"]
[Round "1"]
[White "Pfefer, Jonathan"]
[Black "Chalissery, Jossy"]
[Result "1-0"]
[ECO "B01"]
[BlackElo "1635"]
[PlyCount "77"]
[EventDate "2015.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 c6 6. Bd2 Bg4 7. Nge2 e6 8. a3 Nbd7 9. 0-0 Qd8 10. Bf4 Be7 11. h3 Bh5 12. Qd2 0-0 13. Ng3 Bg6 14. Nge4 Nxe4 15. dxe4 Nf6 16. Qe2 Qb6 17. Bb3 Rfd8 18. Be3 Qa5 19. Qc4 Rac8 20. a4 Bb4 21. f3 h6 22. Ne2 Bd6 23. Nf4 Bxf4 24. Bxf4 Qb6+ 25. Kh2 Rd4 26. a5 Qd8 27. Qe2 Nh5 28. Be5 Rd2 29. Qe3 c5 30. Bc4 Rxc2 31. Bd3 Rxb2 32. Bxb2 Qd6+ 33. f4 c4 34. Be2 c3 35. Bxc3 Rxc3 36. Qxc3 Nxf4 37. e5 Nxe2 38. exd6 Nxc3 39. d7 1-0

