[Event "BCF-ch U16"]
[Site "Aberystwyth"]
[Date "2014.07.26"]
[Round "7"]
[White "Evans, Nicholas Thomas"]
[Black "Vir, Prashast"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "1850"]
[BlackElo "1682"]
[PlyCount "71"]
[EventDate "2014.07.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "WLS"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 g6 4. Bxf6 exf6 5. e3 Bg7 6. Qf3 c6 7. Nge2 0-0 8. h4 h5 9. Qg3 Nd7 10. Nf4 f5 11. Be2 Nf6 12. Bf3 Bd7 13. 0-0-0 b5 14. Ne4 a5 15. Nc5 Ne4 16. Bxe4 fxe4 17. Kb1 Ra7 18. Ne2 a4 19. a3 Qb8 20. Qxb8 Rxb8 21. Nc3 Bf8 22. Na2 Be8 23. Nb4 Re7 24. Kc1 Bh6 25. Kd2 Ra8 26. Rde1 f5 27. c3 Rd8 28. Nc2 Rd6 29. f3 Rf6 30. fxe4 fxe4 31. Ref1 Ref7 32. Rxf6 Rxf6 33. Ke2 Bf8 34. Nb4 Bd6 35. Rh3 Kg7 36. Nb7 1/2-1/2

[Event "BCF-ch U16"]
[Site "Aberystwyth"]
[Date "2014.07.25"]
[Round "6"]
[White "Twigge Molecey, Billy"]
[Black "Vir, Prashast"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1877"]
[BlackElo "1682"]
[PlyCount "53"]
[EventDate "2014.07.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "WLS"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Qxd4 e6 6. Nf3 Nc6 7. Qe4 d6 8. Nbd2 Nxe5 9. Nxe5 dxe5 10. Qxe5 Qd6 11. Bb5+ Bd7 12. Bxd7+ Qxd7 13. 0-0 Qd6 14. Qxd6 Bxd6 15. Ne4 Bf4 16. Bxf4 Nxf4 17. Rfd1 Ke7 18. g3 Nd5 19. Rd2 Rac8 20. Rad1 Rhd8 21. Rd4 f5 22. Ng5 h6 23. Nxe6 Kxe6 24. c4 Rd6 25. cxd5+ Kf6 26. R1d2 Rd7 27. b3 1/2-1/2

[Event "BCF-ch U16"]
[Site "Aberystwyth"]
[Date "2014.07.24"]
[Round "5"]
[White "Vir, Prashast"]
[Black "Howell, Matthew G"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "1682"]
[BlackElo "1506"]
[PlyCount "89"]
[EventDate "2014.07.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "WLS"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Be7 6. Qc2 0-0 7. Bf4 h6 8. e3 d6 9. Be2 Nbd7 10. 0-0 Nh5 11. Bg3 Nxg3 12. hxg3 Nf6 13. Rad1 Re8 14. Rfe1 Bf8 15. e4 Qe7 16. Bd3 e5 17. d5 Ng4 18. Nd2 Qg5 19. Nf1 h5 20. Qd2 Qxd2 21. Rxd2 g6 22. f3 Nf6 23. Kf2 Bh6 24. Ne3 Nd7 25. b4 a5 26. Rb1 axb4 27. axb4 Nb8 28. c5 bxc5 29. bxc5 Bc8 30. Nb5 Re7 31. cxd6 cxd6 32. Nxd6 Nd7 33. Nxc8 Rxc8 34. Rb7 Rd8 35. Bb5 Kf8 36. d6 Re6 37. Bxd7 Rf6 38. Rc7 Kg7 39. Rd3 Rb8 40. Rc2 Rd8 41. Rc7 Rb8 42. Nc4 Rb4 43. Be8 Kf8 44. d7 Rb8 45. d8Q 1-0

[Event "BCF-ch U16"]
[Site "Aberystwyth"]
[Date "2014.07.23"]
[Round "4"]
[White "Sit, Victoria"]
[Black "Vir, Prashast"]
[Result "0-1"]
[ECO "E87"]
[WhiteElo "1682"]
[BlackElo "1682"]
[PlyCount "76"]
[EventDate "2014.07.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "WLS"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Nh5 8. Qd2 f5 9. 0-0-0 a6 10. Bd3 Bd7 11. Kb1 Qe8 12. c5 Qe7 13. cxd6 cxd6 14. Nge2 b5 15. Rc1 b4 16. Nd1 a5 17. Bb6 Rc8 18. Nf2 Qf8 19. g4 fxg4 20. fxg4 Nf4 21. Nxf4 exf4 22. g5 a4 23. Rxc8 Bxc8 24. Qxb4 Nd7 25. Bc7 Nc5 26. h4 Ra7 27. Bb6 Rb7 28. Rc1 Bd7 29. Rc2 Qb8 30. Qd2 Rxb6 31. Nd1 Bg4 32. Nc3 f3 33. Bf1 Bxc3 34. Qxc3 Nxe4 35. Qd4 Bf5 36. Bd3 Rb4 37. Qe3 f2 38. Qc1 Ng3 0-1

[Event "BCF-ch U16"]
[Site "Aberystwyth"]
[Date "2014.07.23"]
[Round "3"]
[White "Vir, Prashast"]
[Black "Zhou, Yang Jian"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "1682"]
[BlackElo "1755"]
[PlyCount "118"]
[EventDate "2014.07.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "WLS"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nc6 7. d5 Ne5 8. Nxe5 dxe5 9. Nc3 Bd7 10. h3 Qc8 11. Kh2 c6 12. e4 Ne8 13. Be3 Nd6 14. c5 Nc4 15. Bc1 cxd5 16. Nxd5 Qxc5 17. b3 e6 18. bxc4 exd5 19. cxd5 Qd6 20. Qb3 Qa6 21. Be3 Rac8 22. Rfc1 b6 23. Bf1 Qb7 24. Qa3 Rxc1 25. Rxc1 Qb8 26. Ba6 f5 27. f3 f4 28. Bf2 fxg3+ 29. Bxg3 Qd8 30. Be2 Qg5 31. Rc7 Qd2 32. Qd3 Qxd3 33. Bxd3 Rxf3 34. Rxd7 Rxd3 35. Rxa7 Rd2+ 36. Kg1 Kf8 37. Rb7 Rxa2 38. Rxb6 Ra4 39. Rb8+ Kf7 40. Rb7+ Kf8 41. d6 Rd4 42. Rb8+ Kf7 43. Rb7+ Kf8 44. Rxg7 Rd1+ 45. Kf2 Kxg7 46. Bxe5+ Kf7 47. Ke2 Rb1 48. Kf3 Ke6 49. Bf4 Rf1+ 50. Ke3 Rh1 51. Kd4 Rxh3 52. Kc5 Rc3+ 53. Kd4 Rf3 54. Bh2 g5 55. e5 g4 56. Ke4 h5 57. Kd4 g3 58. Bg1 g2 59. Ke4 Rf1 0-1

[Event "BCF-ch U16"]
[Site "Aberystwyth"]
[Date "2014.07.22"]
[Round "2"]
[White "Robinson, Owen"]
[Black "Vir, Prashast"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "1778"]
[BlackElo "1682"]
[PlyCount "74"]
[EventDate "2014.07.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "WLS"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 0-0 5. c4 d6 6. 0-0 c6 7. Nc3 Qa5 8. Qa4 Qxa4 9. Nxa4 Re8 10. Nc3 e5 11. d5 cxd5 12. cxd5 Bd7 13. e4 Na6 14. h3 b5 15. a3 Nc5 16. Ne1 a5 17. Nc2 Nb3 18. Rb1 Rab8 19. Be3 b4 20. axb4 axb4 21. Na2 Nc5 22. Bxc5 dxc5 23. Ne3 Bb5 24. Rfd1 Bf8 25. b3 Bd6 26. Nc1 Rec8 27. Re1 c4 28. bxc4 Bxc4 29. Nxc4 Rxc4 30. Nb3 Rc3 31. Na5 b3 32. Rec1 Rxc1+ 33. Rxc1 b2 34. Rb1 Ra8 35. Nb3 Ba3 36. Kf1 Rc8 37. Nd2 Rc2 0-1

[Event "BCF-ch U16"]
[Site "Aberystwyth"]
[Date "2014.07.21"]
[Round "1"]
[White "Vir, Prashast"]
[Black "Gallagher, Daniel GH"]
[Result "0-1"]
[ECO "E67"]
[WhiteElo "1682"]
[BlackElo "1856"]
[PlyCount "58"]
[EventDate "2014.07.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "WLS"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nbd7 7. Qc2 e5 8. Rd1 exd4 9. Nxd4 Re8 10. Nc3 a5 11. e4 Nc5 12. h3 h6 13. Be3 Qe7 14. Ndb5 Rb8 15. Bf4 g5 16. Be3 b6 17. Nd5 Nxd5 18. exd5 Ne4 19. Nd4 Bd7 20. Re1 f5 21. Rad1 Qf7 22. Bc1 Re7 23. g4 Rbe8 24. gxf5 Bxf5 25. Nxf5 Qxf5 26. f3 Ng3 27. Qxf5 Nxf5 28. Kf2 Rxe1 29. Rxe1 Bd4+ 0-1

[Event "GBR-ch 100th U14"]
[Site "Torquay"]
[Date "2013.08.09"]
[Round "7"]
[White "Vir, Prashast"]
[Black "Narayanan, Nandaja"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1668"]
[PlyCount "81"]
[EventDate "2013.08.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ENG"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. c3 Bd7 5. Ba4 Nf6 6. d3 Be7 7. 0-0 0-0 8. Re1 Bg4 9. Nbd2 a6 10. h3 Bh5 11. Nf1 b5 12. Bb3 h6 13. Ng3 Bg6 14. Nh2 Qd7 15. Ng4 Nxg4 16. hxg4 Rfe8 17. Nf5 a5 18. g3 a4 19. Bc2 Bd8 20. Kg2 Na7 21. Rh1 c6 22. Qg1 Bxf5 23. gxf5 Bg5 24. Bxg5 hxg5 25. Rh5 f6 26. Qh2 Kf7 27. Rh7 Rg8 28. d4 Qc7 29. b3 Nc8 30. Rh1 Ne7 31. Qh5+ Kf8 32. Bd1 Rc8 33. Rh8 Qd7 34. bxa4 bxa4 35. Bxa4 d5 36. dxe5 dxe4 37. exf6 gxf6 38. Bb3 Nd5 39. Rxg8+ Kxg8 40. Qh8+ Kf7 41. Rh7# 1-0

[Event "GBR-ch 100th U14"]
[Site "Torquay"]
[Date "2013.08.08"]
[Round "6"]
[White "Vir, Prashast"]
[Black "Willow, Hambel M"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "1668"]
[PlyCount "68"]
[EventDate "2013.08.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ENG"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 h6 7. h4 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Be3 e6 12. 0-0-0 Qc7 13. Kb1 Bd6 14. Ne4 Nxe4 15. Qxe4 Nf6 16. Qd3 0-0-0 17. c3 Nd5 18. g3 Rhe8 19. Ne5 Bxe5 20. dxe5 Qxe5 21. Bd4 Qg5 22. f4 Qe7 23. c4 Nf6 24. Qc3 Ng4 25. Bxa7 c5 26. Qf3 f5 27. Bb6 Rd6 28. Ba5 e5 29. fxe5 Qxe5 30. Rxd6 Qxd6 31. Qxf5+ Qd7 32. Qxc5+ Kb8 33. Qd5 Qe7 34. Re1 Qxe1+ 0-1

[Event "GBR-ch 100th U14"]
[Site "Torquay"]
[Date "2013.08.07"]
[Round "5"]
[White "Howell, Matthew G"]
[Black "Vir, Prashast"]
[Result "1/2-1/2"]
[ECO "B22"]
[BlackElo "1668"]
[PlyCount "60"]
[EventDate "2013.08.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ENG"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 e6 6. Nf3 d6 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. 0-0 Nc6 10. Re1 Be7 11. Nc3 0-0 12. Nxd5 exd5 13. Bf4 Rfd8 14. a3 a5 15. Qd3 dxe5 16. Bxe5 f6 17. Bf4 Bd6 18. Be3 a4 19. g3 Na5 20. Bd2 Nb3 21. Rab1 b5 22. Bc3 Rdb8 23. Nd2 b4 24. axb4 Bxb4 25. Nxb3 axb3 26. Kg2 Qb5 27. Qxb5 Rxb5 28. Kf3 Rc8 29. Rec1 Re8 30. h4 Rb6 1/2-1/2

[Event "GBR-ch 100th U14"]
[Site "Torquay"]
[Date "2013.08.06"]
[Round "4"]
[White "Vir, Prashast"]
[Black "Slade, Theodore"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "1668"]
[BlackElo "1748"]
[PlyCount "122"]
[EventDate "2013.08.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ENG"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4 g6 9. Bd3 Nxd2 10. Kxd2 c5 11. Nf3 Bd7 12. h4 Bc6 13. Qf4 Nd7 14. g4 Qe7 15. a3 0-0-0 16. Rhb1 c4 17. Be2 f6 18. g5 fxg5 19. hxg5 Rdf8 20. Qg3 h5 21. Nh4 Rhg8 22. Rf1 b5 23. f4 a5 24. Rab1 Nb6 25. Ra1 Kd7 26. Qe3 Na4 27. Rfb1 Rb8 28. Bd1 b4 29. axb4 axb4 30. cxb4 c3+ 31. Ke1 Rxb4 32. Rb3 Kc8 33. Rab1 Rxb3 34. cxb3 Qb4 35. Bc2 Nb6 36. Nxg6 Rxg6 37. Bxg6 c2+ 38. Qd2 cxb1Q+ 39. Bxb1 Qxb3 40. Bc2 Qg3+ 41. Qf2 Qc3+ 42. Qd2 Qg3+ 43. Qf2 Qc3+ 44. Qd2 Qxd2+ 45. Kxd2 Kd7 46. f5 exf5 47. Bxf5+ Ke7 48. Ke3 Be8 49. Kf4 Kf8 50. g6 Kg7 51. Kg5 h4 52. Kxh4 Bxg6 53. Bxg6 Kxg6 54. Kg4 Nc8 55. Kf4 Ne7 56. Ke3 Nf5+ 57. Kd3 Kg5 58. Kc3 Kf4 59. Kd3 Kf3 60. Kc3 Ke4 61. e6 Ne7 0-1

[Event "GBR-ch 100th U14"]
[Site "Torquay"]
[Date "2013.08.05"]
[Round "3"]
[White "Anbukumar, Hajane"]
[Black "Vir, Prashast"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1651"]
[BlackElo "1668"]
[PlyCount "97"]
[EventDate "2013.08.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ENG"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 c6 7. Bd3 Qa5 8. Nge2 Ne4 9. Bh4 Bb4 10. Qc2 Ndf6 11. f3 Nxc3 12. bxc3 Be7 13. 0-0 h6 14. e4 Qd8 15. e5 Nd7 16. Bxe7 Qxe7 17. f4 c5 18. Ng3 Nb6 19. f5 c4 20. Be2 Bd7 21. a4 0-0-0 22. a5 Na8 23. Bf3 Bc6 24. Bg4 f6 25. Ne2 Kb8 26. e6 h5 27. Bh3 Rh6 28. Nf4 Nc7 29. Ng6 Qe8 30. Rae1 Nb5 31. Re3 Nd6 32. g3 Nc8 33. Rf4 Ne7 34. Rh4 Nxg6 35. fxg6 Rxg6 36. e7 Rd6 37. Rxh5 Rxg3+ 38. Rxg3 Qxh5 39. Qf5 Qxf5 40. Bxf5 g5 41. Rh3 b6 42. a6 b5 43. Rh8+ Kc7 44. Rc8+ Kb6 45. Rxc6+ Rxc6 46. e8Q b4 47. Qb8+ Kxa6 48. Qxb4 Rb6 49. Bc8+ 1-0

[Event "GBR-ch 100th U14"]
[Site "Torquay"]
[Date "2013.08.04"]
[Round "1"]
[White "Bowman, Jason"]
[Black "Vir, Prashast"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "1668"]
[PlyCount "94"]
[EventDate "2013.08.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ENG"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. 0-0 Nge7 7. d3 0-0 8. Qe1 Nd4 9. f5 d5 10. Bb3 dxe4 11. dxe4 exf5 12. Qh4 fxe4 13. Nxe4 Nef5 14. Qxd8 Rxd8 15. Bg5 Rf8 16. Bd5 h6 17. Bf4 Ne2+ 18. Kh1 Nxf4 19. Bb3 Ne6 20. c3 c4 21. Bxc4 Ne3 22. Bxe6 Bxe6 23. Rf2 Rfe8 24. Nd6 Reb8 25. Re1 Nf5 26. Nb5 Rc8 27. Rd2 a6 28. Nbd4 Nxd4 29. Nxd4 Bxd4 30. Rxd4 Rd8 31. Rh4 Kg7 32. g3 Bxa2 33. Re7 Bd5+ 34. Kg1 Re8 35. Rd7 Rad8 36. Rc7 Re1+ 37. Kf2 Rde8 38. g4 R8e2+ 39. Kg3 Rg2+ 40. Kf4 Re4+ 41. Kf3 Rc4+ 42. Ke3 Rxc7 43. g5 Rxg5 44. Rd4 Rc4 45. Rd3 Re4+ 46. Kd2 Rg2+ 47. Kd1 Bb3+ 0-1

[Event "GBR-ch 100th U14"]
[Site "Torquay"]
[Date "2013.08.04"]
[Round "2"]
[White "Vir, Prashast"]
[Black "Asenov, Pavel"]
[Result "1/2-1/2"]
[ECO "B76"]
[WhiteElo "1668"]
[BlackElo "1896"]
[PlyCount "46"]
[EventDate "2013.08.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ENG"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 Nxd4 10. Bxd4 Be6 11. g4 Qa5 12. Kb1 Rfc8 13. a3 Rab8 14. g5 Nh5 15. Bxg7 Nxg7 16. Nd5 Qxd2 17. Rxd2 Bxd5 18. Rxd5 Ne6 19. Bh3 Rc7 20. Bxe6 fxe6 21. Rd2 Rf8 22. Rd3 Rc5 23. h4 b5 1/2-1/2

