[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.24"]
[Round "1"]
[White "Durao, Joaquim"]
[Black "Rosselson, Leon"]
[Result "1-0"]
[ECO "B74"]
[PlyCount "75"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. O-O Bg7 8.
Be3 O-O 9. Nb3 Be6 10. f4 Na5 11. f5 Bc4 12. Nxa5 Bxe2 13. Qxe2 Qxa5 14. Bd4 $1
Rac8 15. Rad1 Rc6 16. g4 $1 Nd7 17. Bxg7 Kxg7 18. Nd5 Qc5+ 19. Rf2 Re8 (19...
e6 $5 20. Nf4 Kg8 $5 {Stockfish 14} 21. fxe6 $140 fxe6 22. Nxe6 Qxf2+ 23. Qxf2
Rxf2 24. Kxf2 Rxc2+ $11) 20. Kh1 Nf6 $2 21. fxg6 $1 hxg6 22. Qf3 $1 Qc4 23. g5
{Source: Ajedrez Espanol. Contributed by Gerald Hartmann, 6 June 2022. But
more moves were played: Rosselson Scorebook 2, Game 13} Qxe4 24. gxf6+ exf6 25.
Qxe4 Rxe4 26. Nxf6 Re6 27. Nd5 a5 28. Rdf1 f5 29. Nf4 Rf6 30. Re1 b5 31. Re7+
Kh6 32. Rf3 d5 33. Nxd5 Rfd6 34. Ne3 Rd2 35. Re5 b4 36. Rxa5 Rcd6 37. Raxf5 Ra6
38. Ng4+ {Source: Rosselson Scorebook 2, Game 13} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.24"]
[Round "1"]
[White "Gligoric, Svetozar"]
[Black "Barden, Leonard William"]
[Result "1-0"]
[ECO "B67"]
[PlyCount "71"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8.
O-O-O Bd7 9. f4 h6 10. Bh4 Nxe4 11. Qe1 Nf6 12. Nf5 Qa5 13. Nxd6+ Bxd6 14. Rxd6
Qc7 15. Rd2 Qxf4 16. Be2 Ne4 17. Nxe4 Qxe4 18. Qf2 Ne5 {"Barden played his
first seventeen moves almost instantaneously, then took over an hour on his
eighteenth" (CHESS)} 19. Rhd1 {(The score gives 'R-K1' but it is clearly
incorrect. 19 Rhd1 is the only move that makes sense of the remaining score -
JS)} Rc8 20. Bh5 O-O 21. Rxd7 Nxd7 22. Rxd7 Qa4 23. Rd3 Qxa2 24. Ra3 Qd5 25.
Bf3 Qd7 26. Kb1 Rc4 27. Rd3 Qc7 28. Bg3 Qa5 29. Qe1 Qxe1+ 30. Bxe1 b5 31. b3
Rf4 32. Rd6 e5 33. Bg3 Rd4 34. Bxe5 Rxd6 35. Bxd6 Rd8 36. Bb4 {Source: CHESS,
Vol.22, no.291-2, 17 May 1957, p209} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.25"]
[Round "2"]
[White "Rosselson, Leon"]
[Black "Ballard, Kenneth O"]
[Result "1-0"]
[ECO "E87"]
[PlyCount "61"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d6 4. e4 Bg7 5. f3 Nbd7 6. Be3 O-O 7. Qd2 e5 8. d5
Ne8 9. g4 c5 10. Nge2 Nb6 11. Ng3 Bd7 12. a4 a6 13. h4 f6 14. Bd3 Rf7 15. Qh2
Qc8 16. a5 f5 17. gxf5 gxf5 18. exf5 e4 19. fxe4 Bxc3+ 20. bxc3 Na4 21. Nh5 Kh8
22. e5 Bxf5 23. e6 Bxe6 24. dxe6 Qxe6 25. Kd2 Nxc3 26. Rae1 Ne4+ 27. Kc1 Rd8
28. Bg5 Rf2 29. Qxf2 Nxf2 30. Rxe6 Nxd3+ 31. Kd2 {Source: Rosselson Scorebook
2, Game 14} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.25"]
[Round "2"]
[White "Stevenson, Reginald William"]
[Black "O'Kelly de Galway, Alberic"]
[Result "0-1"]
[ECO "A26"]
[PlyCount "50"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nc6 7. d3 e5 8. Bg5
h6 9. Bd2 Be6 10. Qa4 Qd7 11. Rac1 Kh7 12. b4 a6 13. Rfe1 Nh5 14. e3 f5 15. a3
Qf7 16. Qc2 Rae8 17. Rcd1 Bc8 18. Bc1 e4 19. dxe4 Bxc3 20. Qxc3 fxe4 21. Nd4
Ne5 22. Rf1 Bg4 23. Rd2 c5 24. bxc5 dxc5 25. Nc2 Nxc4 0-1

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.26"]
[Round "3"]
[White "Mazitis, Arnolds"]
[Black "Harris, Geoffrey F"]
[Result "1/2-1/2"]
[ECO "E81"]
[PlyCount "57"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 Nbd7 6. Bg5 c5 7. d5 O-O 8. Qd2
Qb6 9. O-O-O a6 10. h4 Qb4 11. a3 Qa5 12. h5 Rb8 13. hxg6 fxg6 14. Bh6 Ne5 15.
Bxg7 Kxg7 16. f4 Neg4 17. Nf3 b5 18. e5 Nh5 19. Rxh5 gxh5 20. e6 b4 21. Nb1 Qa4
22. Bd3 bxa3 23. Nxa3 Qb3 24. Rh1 Qxb2+ 25. Qxb2+ Rxb2 26. Kxb2 Nf2 27. Rxh5
Nxd3+ 28. Kc3 Nxf4 29. Rh2 {Source: Birmingham Daily Post, 1 May 1957 - BH
Wood column} 1/2-1/2

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.26"]
[Round "3"]
[White "O'Kelly de Galway, Alberic"]
[Black "Mackay, Donald G"]
[Result "1-0"]
[ECO "A54"]
[PlyCount "89"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 d6 3. Nf3 Be7 4. d4 exd4 5. Nxd4 Nf6 6. e4 O-O 7. g3 Re8 8. Bg2
h6 9. O-O Bf8 10. Re1 Nbd7 11. h3 Nb6 12. b3 c6 13. Bb2 a5 14. Qc2 a4 15. Rad1
axb3 16. axb3 Qc7 17. Nce2 Nfd7 18. Qc3 Nc5 19. Nf4 Nbd7 20. Nh5 Qb6 21. Re3
Ra2 22. Rd2 g6 23. Nf5 Rxb2 24. Qxb2 gxf5 25. Rxd6 fxe4 26. b4 Re5 27. Nf6+
Nxf6 28. Qxe5 Ncd7 29. Qf4 Qxb4 30. Rxf6 Nxf6 31. Qxf6 Qxc4 32. Rxe4 Qc1+ 33.
Kh2 Be6 34. Rxe6 fxe6 35. Qg6+ Bg7 36. Qxe6+ Kf8 37. Qc8+ Ke7 38. Qxb7+ Kf6 39.
Bxc6 Qf1 40. Qb6 Qa1 41. Qd8+ Ke6 42. Qd7+ Kf6 43. Qd6+ Kf7 44. Bd5+ Ke8 45.
Be4 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.26"]
[Round "3"]
[White "Rosse, Jack Dennis"]
[Black "Rosselson, Leon"]
[Result "0-1"]
[ECO "A56"]
[PlyCount "58"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. Qc2 a6
9. O-O Nc7 10. a3 Nd7 11. Be3 b5 12. cxb5 f5 13. Rad1 f4 14. Bc1 g5 15. Ne1 Qe8
16. b4 cxb4 17. axb4 Rf6 18. bxa6 Nxa6 19. Ba3 Rh6 20. Nb5 Nf6 21. h3 g4 22.
hxg4 Nxg4 23. Bxg4 Bxg4 24. f3 Bd7 25. Nc3 Bh4 26. g4 fxg3 27. b5 Bd8 28. Nd3
Bb6+ 29. Bc5 Nxc5 {Source: Rosselson Scorebook 2, Game 15. Jack Dennis Rosse
changed his name from Jacob Rosselson in 1949 but was not related to Leon. He
was a violinist, born 1900 in Lithuania, died 1989.} 0-1

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.26"]
[Round "3"]
[White "Wood, Baruch Harold"]
[Black "Andersen, Borge"]
[Result "0-1"]
[ECO "E76"]
[PlyCount "82"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. dxc5 Qa5 8. Bd3
Qxc5 9. Qe2 Nc6 10. Be3 Qh5 11. Rc1 Ng4 12. Bg1 e5 13. fxe5 Ncxe5 14. Nb5 Nxd3+
15. Qxd3 Bxb2 16. Rc2 Bg7 17. Nxd6 Rd8 18. c5 Ne5 19. Nxe5 Bxe5 20. Bf2 b6 21.
Qf3 Qxf3 22. gxf3 bxc5 23. Nb5 Rb8 24. Rxc5 Bd6 25. Nxd6 Rb1+ 26. Ke2 Ba6+ 27.
Ke3 Rxh1 28. Bg3 Rd1 29. e5 Rd3+ 30. Ke4 Rb8 31. Be1 Rb1 32. Bc3 Rc1 33. Bb4
Rxc5 34. Bxc5 Rd2 35. Bxa7 Rxa2 36. f4 Rxh2 37. f5 Re2+ 38. Kf4 h5 39. Kg5 Rxe5
40. Kf6 Rd5 41. Bb8 Bd3 {Source: Skakbladet 1957, 90. Contributed by Ulrich
Tamm, 7 June 2022.} 0-1

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.27"]
[Round "4"]
[White "Andersen, Borge"]
[Black "Gligoric, Svetozar"]
[Result "1/2-1/2"]
[ECO "E67"]
[PlyCount "98"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. d4 d6 6. Nf3 Nbd7 7. O-O e5 8. Qc2
exd4 9. Nxd4 Nb6 10. b3 c5 11. Ndb5 a6 12. Na3 Re8 13. Bg5 h6 14. Bf4 g5 15.
Bd2 Qe7 16. e4 Ng4 17. Rae1 Qf6 18. Nd1 Ne5 19. f4 gxf4 20. Rxf4 Qg6 21. Ne3
Nc6 22. Qd1 Nd4 23. Nac2 Be5 24. Rff1 h5 25. Ba5 Nd7 26. Nd5 Nf6 27. Nc7 Bg4
28. Qd3 h4 29. Nxa8 hxg3 30. Nc7 Nxc2 31. Nxe8 Nxe8 32. Qxc2 Bd4+ 33. Kh1 Qh5
34. Bf3 Bxf3+ 35. Rxf3 Qxf3+ 36. Qg2 Qxg2+ 37. Kxg2 gxh2 38. Kxh2 Nf6 39. Kg3
Kf8 40. Kf4 Ke7 41. Kf5 Nh5 42. Bd2 Ng7+ 43. Kg4 Ne6 44. Rb1 Kd7 45. a3 b5 46.
cxb5 axb5 47. a4 Kc6 48. axb5+ Kxb5 49. Rf1 f6 {Source: CHESS, Vol.22, no.
291-2, 17 May 1957, p206} 1/2-1/2

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.27"]
[Round "4"]
[White "James, Rodney Ewan"]
[Black "Fazekas, Stefan"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "14"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]

1. b4 e5 2. Bb2 f6 3. e4 Bxb4 4. Bc4 Qe7 5. Nf3 d6 6. c3 Bc5 7. Qb3 Nh6 {... x moves. Source: The Guardian, 1 February 1963 (in a note to the game Sokolsky-Kirillov, Minsk 1957)} 0-1

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.27"]
[Round "4"]
[White "Mackay, Donald G"]
[Black "Durao, Joaquim"]
[Result "1-0"]
[ECO "E67"]
[PlyCount "43"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. O-O O-O 6. Nc3 e5 7. d4 Nbd7 8. d5
Ne8 9. e4 f5 10. Ne1 c5 11. Nd3 Ndf6 12. f3 Bd7 13. Be3 Qc8 14. Qd2 a6 15. a4
b6 16. Bh6 Nc7 17. Bxg7 Kxg7 18. f4 fxe4 19. fxe5 exd3 20. exf6+ Kh8 21. Ne4
Qd8 22. Qh6 {Source: Ajedrez Espanol. Contributed by Gerald Hartmann, 6 June
2022} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.27"]
[Round "4"]
[White "Matchett, Harry Gethin Thorp"]
[Black "Clarke, Peter Hugh"]
[Result "1/2-1/2"]
[ECO "E60"]
[PlyCount "78"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nc6 7. d5 Na5 8. Nfd2
c5 9. a3 b5 10. cxb5 Bd7 11. Nc3 Qc7 12. h3 Rfb8 13. a4 a6 14. bxa6 Rxa6 15. e4
Rab6 16. Re1 Rb4 17. Bf1 c4 18. Kh2 h5 19. f4 Bh6 20. Qf3 g5 21. e5 dxe5 22.
fxe5 g4 23. Qd1 Nh7 24. h4 Bxd2 25. Bxd2 Rxb2 26. Ra2 Rxa2 27. Nxa2 Rb2 28. Nc3
Nb3 29. Re2 Nd4 30. Bc1 Rxe2+ (30... Nf3+ $1 31. Kh1 Bxa4 32. Nxa4 Qa7 $1 33.
Be3 Qxe3) 31. Nxe2 Nf3+ 32. Kh1 Qxe5 33. Qc2 Nf6 34. Bb2 Qxd5 35. Nf4 Qb7 (
35... Qc5 $1 36. Qg2 Ne4 $1 $19) 36. Bxf6 Ne1+ $2 (36... Qa7 $1) 37. Bg2 $3 Bc6
38. Qd2 Bxg2+ 39. Nxg2 Nxg2 {Source: Birmingham Daily Post, 1 May 1957 - BH
Wood column} 1/2-1/2

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.27"]
[Round "4"]
[White "Stevenson, Reginald William"]
[Black "Rosselson, Leon"]
[Result "0-1"]
[ECO "A23"]
[PlyCount "86"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6. d3 Nc6 7. Nf3 Bc5 8. O-O
O-O 9. a3 h6 10. Qc2 Be6 11. Na4 Bd6 12. Nc5 Bxc5 13. Qxc5 Rc8 14. Qb5 e4 15.
dxe4 dxe4 16. Ne5 Nd4 17. Qxb7 Rc7 18. Qa6 Nc2 19. Bf4 Nxa1 20. Rxa1 Qc8 21.
Qa5 Rc5 22. Qa4 g5 23. b4 Rc2 24. Be3 Qc3 25. Rd1 Rxe2 26. Bd4 Qc2 27. Qxc2
Rxc2 28. b5 Nd5 29. Bxe4 Ra2 30. Bxa7 Nc3 31. Re1 Nxe4 32. Rxe4 Ra1+ 33. Kg2
Bd5 34. f3 Bxe4 35. fxe4 Ra2+ 36. Kh3 Rxa3 37. Bc5 Rb3 38. Bxf8 Kxf8 39. b6 Ke7
40. Nc6+ Kd6 41. Nd8 Rxb6 42. Nxf7+ Ke7 43. Ne5 Re6 {White lost on time.
Source: Rosselson Scorebook 2, Game 16} 0-1

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.27"]
[Round "4"]
[White "Wade, Robert Graham"]
[Black "O'Kelly de Galway, Alberic"]
[Result "0-1"]
[ECO "B41"]
[PlyCount "96"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Bd3 Nc6 8. Nc2
Bxc3+ 9. bxc3 d5 10. exd5 exd5 11. O-O Be6 12. cxd5 Qxd5 13. c4 Qd7 14. Bb2
O-O-O 15. Be2 Qd2 16. Bxf6 gxf6 17. Ne3 Ne5 18. Re1 Qxd1 19. Rexd1 Rhe8 20. f4
Nc6 21. Kf2 Nd4 22. Bf3 Nxf3 23. Kxf3 f5 24. h3 h5 25. Rxd8+ Rxd8 26. g4 hxg4+
27. hxg4 fxg4+ 28. Nxg4 Rd4 29. Ne5 f6 30. Ng4 f5 31. Ne3 Rd3 32. Ke2 Ra3 33.
Kd2 Kd7 34. Rb1 Rxa2+ 35. Kd3 Kc6 36. Nc2 Bxc4+ 37. Kc3 Ra4 38. Nd4+ Kc7 39.
Nxf5 b5 40. Ne3 Kc6 41. Rg1 Bf7 42. Rg4 b4+ 43. Kb2 Ra2+ 44. Kb1 Rf2 45. f5 a5
46. Nc2 Kc5 47. Nd4 Bc4 48. Ka1 Rf1+ 0-1

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.29"]
[Round "5"]
[White "Rosselson, Leon"]
[Black "Radojcic, Miroslav"]
[Result "1/2-1/2"]
[ECO "A97"]
[PlyCount "57"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. c4 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 Qe8 8. Re1
Ne4 9. Qc2 Qg6 10. Nd2 Nxc3 11. Qxc3 Nc6 12. Nb3 e5 13. dxe5 dxe5 14. Na5 e4
15. Nxc6 Qxc6 16. Be3 a5 17. a3 Be6 18. Rac1 a4 19. f3 Rad8 20. fxe4 fxe4 21.
Qc2 Bf5 22. Rf1 Bc5 23. Bxc5 Qxc5+ 24. Kh1 Qe3 25. Rcd1 g6 26. Rxd8 Rxd8 27.
Rd1 Rd4 28. Rxd4 Qxd4 29. Qxa4 {Source: Rosselson Scorebook 2, Game 17} 1/2-1/2

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.30"]
[Round "6"]
[White "O'Kelly de Galway, Alberic"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "B92"]
[PlyCount "90"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nf3 Qc7 8. Bg5
Nbd7 9. Nd2 $6 b5 10. Nf1 $6 (10. f3 $142) 10... b4 11. Nd5 Nxd5 12. exd5 Nc5
13. Ng3 Be7 14. Bd2 (14. Bxe7 Qxe7 $15) 14... Rb8 15. c4 O-O 16. O-O f5 17. f4
g6 18. Nh1 (18. Be3 g5) (18. Kh1 $142) 18... Ne4 19. g3 Qc5+ 20. Kg2 Nxd2 21.
Qxd2 e4 22. Qc2 Bf6 23. Rad1 Bd7 24. Nf2 a5 25. Rb1 a4 26. Qc1 Bd4 27. h4 Rf7
28. Nh3 h6 29. Qd1 Bf6 30. Qc1 Rc8 31. Kh2 Rc7 32. Rg1 Rg7 33. Rg2 Bc8 34. Qd1
Ra7 35. Bf1 Bd7 36. b3 $2 (36. Qe2 $142) 36... axb3 37. axb3 (37. Qxb3 Bc3 {
/\ Ra3}) 37... Be8 38. Be2 Ra2 39. Bf1 Rga7 40. Rc1 Qe3 41. Rb1 Rxg2+ 42. Bxg2
Ra2 43. Ng1 Qf2 44. Qf1 Qxf1 45. Rxf1 Rb2 {Source: BCM, Jul 1957, p187} 0-1

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.04.30"]
[Round "6"]
[White "Rosselson, Leon"]
[Black "Wood, Baruch Harold"]
[Result "1/2-1/2"]
[ECO "C14"]
[PlyCount "36"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 O-O 8.
Nf3 c5 9. Nb5 Nc6 10. c3 a6 11. Nd6 f6 12. Bd3 fxe5 13. fxe5 cxd4 14. cxd4 Rxf3
15. Qxf3 Nxd4 16. Qh5 $1 $18 g6 17. Bxg6 hxg6 18. Qxg6+ Qg7 {Source: Rosselson
Scorebook 2, Game 18} (18... Qg7 19. Qxg7+ Kxg7 20. Rc1 $18) 1/2-1/2

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.01"]
[Round "7"]
[White "Fazekas, Stefan"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "C33"]
[PlyCount "46"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Qf3 Nc6 4. Ne2 d5 5. exd5 Ne5 6. Qe4 Bd6 7. Nxf4 Nf6 8.
Qa4+ Bd7 9. Qb3 O-O 10. d4 Ng6 11. Ne2 Re8 12. Nbc3 Ne4 13. Nxe4 Rxe4 14. Qd3
Qe7 15. h3 Re8 16. Bd2 Nf4 17. Bxf4 Bxf4 18. Kd1 Bh6 19. a4 Re3 20. Qc4 Qg5 21.
Qb4 Bf5 22. b3 Rxe2 23. Bxe2 Rxe2 {Source: Illustrated London News, 18 May 1957
} 0-1

[Event "Stevenson Memorial"]
[Site "Bognor Regis"]
[Date "1957.05.01"]
[Round "7"]
[White "Lloyd, David Edward"]
[Black "Barden, Leonard William"]
[Result "1-0"]
[ECO "B92"]
[PlyCount "35"]
[EventDate "1957.04.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceVersion "1"]
[SourceVersionDate "2016.01.01"]
[SourceQuality "1"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Bg5
Nbd7 9. a4 h6 10. Be3 Qc7 (10... b6 11. Bc4 Bb7 12. Nd2 Qc7 13. Qe2 O-O 14. O-O
Rfc8 15. f3 d5 16. Nxd5 Nxd5 17. exd5 Nf6 {David E Lloyd - Arthur Hall, 1958 
(0-1)}) 11. O-O O-O 12. Nd2 b6 13. Nc4 Bb7 14. f3 Rfd8 15. a5 bxa5 16. Nxa5 Nb6
17. Nxb7 Qxb7 18. Kh1 {"and White has an ideal position owing to his control
of d5 and the serious weakness of Black's a-pawn." (Leonard Barden) ... x
moves. Source: Manchester Guardian, 3 April 1958. Contributed by Ulrich Tamm,
7 June 2022.} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.01"]
[Round "7"]
[White "Rakic, Tomislav"]
[Black "O'Kelly de Galway, Alberic"]
[Result "1-0"]
[ECO "B22"]
[Annotator "Golombek"]
[PlyCount "45"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. Bc4 Nb6 $6 (5... Qc7 $142) 6. Bb3 d5
7. cxd4 Nc6 8. Ne2 Bf5 9. Nbc3 e6 10. O-O a6 (10... h6 $142 11. Ng3 $140 Bh7)
11. Ng3 Bg6 12. f4 Ne7 13. a4 h5 (13... Nf5 14. Nxf5 Bxf5 15. a5 Nd7 16. g4 $40
) 14. a5 h4 $2 (14... Nbc8) 15. f5 exf5 (15... hxg3 16. fxg6 Nxg6 17. axb6 Rxh2
18. Ba4+ $18) 16. Nge2 Nc4 17. Ba4+ Nc6 18. Bxc6+ bxc6 19. Qa4 Rc8 20. b3 h3
21. bxc4 hxg2 22. Rf2 dxc4 23. Qxc4 {Source: BCM, Jul 1957, p188} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.01"]
[Round "7"]
[White "Wade, Robert Graham"]
[Black "Rosselson, Leon"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "73"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Nge7 7. Na3 cxd4 8. cxd4
Nf5 9. Nc2 h5 10. O-O Bd7 11. Rb1 a5 12. Be3 Nb4 13. a3 Nxc2 14. Qxc2 Be7 15.
g3 O-O 16. h3 Rac8 17. Qd1 a4 18. g4 hxg4 19. hxg4 Nxe3 20. fxe3 Bb5 21. Rf2 g6
22. Rh2 Kg7 23. Bd3 Bxd3 24. Qxd3 Rh8 25. Rf2 Qb3 {?? Rosselson} 26. Qxb3 axb3
27. Rd2 Bh4 28. Rbd1 Bd8 29. Rd3 Rc2 30. R1d2 Ba5 31. Rf2 Rh3 32. Kg2 Rh8 33.
Rxb3 Rc1 34. Rxb7 Rhh1 35. b4 Bd8 36. Ra2 Ra1 37. Rc2 {('R-B2'). Source:
Rosselson Scorebook 2, Game 19} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.02"]
[Round "8"]
[White "Gligoric, Svetozar"]
[Black "Lloyd, David Edward"]
[Result "1-0"]
[ECO "A84"]
[Annotator "Golombek"]
[PlyCount "81"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 f5 4. Bf4 c6 5. e3 Nf6 6. Bd3 Ne4 $6 (6... Nbd7 $2 7.
cxd5 cxd5 8. Nb5) (6... Bd6 $142) 7. Nge2 Bd6 8. O-O O-O 9. f3 Nxc3 10. bxc3
Qe7 (10... Bxf4 $142 11. Nxf4 Rf6) 11. Qb3 Kh8 12. Bxd6 Qxd6 13. e4 dxc4 (13...
dxe4 14. fxe4 Nd7 15. c5 Qe7 16. Nf4 $18) 14. Bxc4 e5 15. f4 $1 exd4 16. e5 Qe7
17. Nxd4 Nd7 18. Rad1 (18. Ne6 Nc5) 18... Nc5 19. Qa3 Re8 20. Nb3 Ne6 (20...
Ne4 $4 21. Qxe7 Rxe7 22. Rd8+) 21. Qxe7 Rxe7 22. Rd6 g6 23. g3 a5 24. a4 Kg7
25. Kf2 Kf8 26. Ke3 Ke8 27. Rb1 Bd7 28. Bxe6 Bxe6 29. Nc5 Bc8 30. Kd4 Kf7 31.
c4 Ra7 32. Rd8 Rc7 33. Rb6 Ke7 (33... h5 $5) 34. Rh8 h5 35. Rh6 Kf8 36. Rxg6 h4
37. e6 hxg3 38. hxg3 Rh7 39. Ke5 Ke7 40. g4 (40. Rg8 $1 Ra8 41. Rxc8 $1) 40...
fxg4 41. f5 {Source: BCM, Jul 1957, p189} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.02"]
[Round "8"]
[White "Rosselson, Leon"]
[Black "Spiller, Arthur Raymond"]
[Result "1-0"]
[ECO "E26"]
[PlyCount "43"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 b6 7. Bd3 Nc6 8. Nf3
Ba6 9. e4 Na5 10. e5 Ng8 11. Ng5 $5 $16 f5 12. exf6 ({Stockfish 15:} 12. O-O
$16) 12... Nxf6 13. Bxh7 Qc7 14. Bg6+ Ke7 15. Qf3 Rxh2 $1 $15 16. Rg1 Bb7 17.
Bf4 Bxf3 18. Bxc7 Rxg2 $4 ({Stockfish 15:} 18... Rh6 $11) 19. Nxf3 $18 Rxg1+
20. Nxg1 d6 21. dxc5 Nxc4 22. Bxd6+ {Source: Rosselson Scorebook 2, Game 20}
1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.02"]
[Round "8"]
[White "Wade, Robert Graham"]
[Black "Wood, Baruch Harold"]
[Result "1-0"]
[ECO "B76"]
[PlyCount "75"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Bc4
a6 9. a3 b5 10. Ba2 Bb7 11. Qd2 Nbd7 12. h4 h5 13. O-O-O Rc8 14. g4 Ne5 15.
gxh5 Nxh5 16. Rdg1 Nc4 17. Bxc4 Rxc4 18. Rg5 Qc7 19. Rxh5 gxh5 20. Rg1 Rxd4 21.
Bxd4 f6 22. Be3 Rf7 23. Qg2 e6 24. Qg6 d5 25. Qxh5 f5 26. exd5 Qe5 27. Bh6 exd5
28. Nd1 d4 29. f4 Qc7 30. Bxg7 Qxf4+ 31. Kb1 Rxg7 32. Qe8+ Kh7 33. Rxg7+ Kxg7
34. Qe7+ Kh6 35. Qxb7 Qd2 36. Qf3 f4 37. Nf2 a5 38. Nd3 {Source: Ajedrez
Espanol. Contributed by Gerald Hartmann, 6 June 2022} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.03"]
[Round "9"]
[White "Gligoric, Svetozar"]
[Black "Wade, Robert Graham"]
[Result "1/2-1/2"]
[ECO "D29"]
[PlyCount "49"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 e6 5. Bxc4 a6 6. O-O Nf6 7. Qe2 b5 8. Bb3
Bb7 9. Rd1 Nbd7 10. Nc3 Be7 11. d5 exd5 12. Bxd5 Bxd5 13. Nxd5 Nxd5 14. Rxd5
Qc7 15. e4 O-O 16. Bg5 Nb6 17. Bxe7 Qxe7 18. Re5 Qc7 19. Rg5 Rfe8 20. Nh4 Qf4
21. Rg4 Qe5 22. Re1 Rad8 23. h3 g6 24. Nf3 Qe7 25. Qc2 {Source: Ajedrez
Espanol. Contributed by Gerald Hartmann, 6 June 2022} 1/2-1/2

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.03"]
[Round "9"]
[White "O'Kelly de Galway, Alberic"]
[Black "Rosselson, Leon"]
[Result "1-0"]
[ECO "E68"]
[PlyCount "97"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. g3 g6 5. Bg2 Bg7 6. d4 exd4 7. Nxd4 Nbd7 8.
O-O O-O 9. e4 Nc5 10. h3 a5 11. Rb1 Bd7 12. Re1 Qc8 13. Kh2 Re8 14. b3 Nh5 15.
Be3 Nf6 16. f3 Ne6 17. Nde2 Bc6 18. Qc2 Nd7 19. Rbd1 h5 20. f4 Nec5 21. Nd4 Na6
22. a3 Nb6 23. Nxc6 bxc6 24. Ne2 a4 25. b4 Qe6 26. Rc1 c5 27. b5 Nb8 28. Bf2
Ra7 29. Ng1 N8d7 30. Nf3 Qf6 31. Re2 Bh6 32. h4 Re7 33. Rce1 Qe6 34. Nd2 Ra8
35. e5 Rae8 36. Bh3 f5 37. exf6 Qxf6 38. Rxe7 Rxe7 39. Rxe7 Qxe7 40. Qxg6+ Qg7
41. Be6+ Kh8 42. Qxh5 Nf6 43. Qf5 Nbd7 44. Nf3 Qh7 45. Ng5 Qxf5 46. Bxf5 Kg8
47. Ne6 Ne8 48. Nxc7 Nxc7 49. Bxd7 {Source: Rosselson Scorebook 2, Game 21} 1-0

[Event "Stevenson Memorial 5th"]
[Site "Bognor Regis"]
[Date "1957.05.04"]
[Round "10"]
[White "Rosselson, Leon"]
[Black "Harris, Geoffrey F"]
[Result "1/2-1/2"]
[ECO "D50"]
[PlyCount "105"]
[EventDate "1957.04.24"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ENG"]
[SourceTitle "BritBase"]
[Source "John Saunders"]
[SourceDate "2016.04.14"]
[SourceVersion "1"]
[SourceVersionDate "2016.04.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 c5 5. cxd5 cxd4 6. Qxd4 Be7 7. e4 Nc6 8.
Bb5 exd5 9. Nf3 O-O 10. Bxc6 bxc6 11. e5 Ne4 12. Bxe7 Qxe7 13. Nxe4 dxe4 14.
Qxe4 Ba6 15. O-O-O Qc5+ 16. Kb1 Rab8 17. Rd2 Rfd8 18. Qc2 Qb4 19. Rhd1 Rd5 20.
Rxd5 cxd5 21. Rd4 Qb5 22. Qd2 Qf1+ 23. Ne1 Rb5 24. b4 Bb7 25. a4 Rb6 26. Kb2
Re6 27. f4 f6 28. Nd3 fxe5 29. fxe5 h6 {('P-R3')} 30. Rf4 Qg1 31. Nc5 Rxe5 32.
Nxb7 Qxh2 33. Rf2 Qh4 34. Nc5 Qe7 35. a5 Kh8 36. Nd3 Re3 37. Nf4 Qe5+ 38. Ka2
Qe8 39. Ng6+ Kh7 40. Nf8+ Kh8 41. Qc2 Re4 42. a6 Qb5 43. Ng6+ Kh7 44. Ne7 Qxa6+
45. Kb3 {?? Rosselson} (45. Kb1 $18) 45... Qc4+ 46. Qxc4 dxc4+ 47. Kc3 Rxe7 $19
48. Kxc4 Kg6 49. Kb5 Kg5 50. Ka6 Kg4 51. Rf8 Kg3 $2 ({Stockfish 15:} 51... h5
$19) 52. Ra8 Kxg2 53. b5 {Source: Rosselson Scorebook 2, Game 22} 1/2-1/2



