[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.1"]
[White "Canadell Ruiz, Samuel Sandal"]
[Black "Hristov, Hristo M."]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1794"]
[BlackElo "2138"]
[PlyCount "64"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 e6 2. e4 d5 3. Be3 dxe4 4. f3 Nf6 5. Nd2 exf3 6. Ngxf3 Be7 7. Bd3 Nd5 ({
RR} 7... Nbd7 8. Qe2 O-O 9. O-O c5 10. c3 cxd4 11. cxd4 Nb6 12. Ne5 Nbd5 13.
Rad1 Bd7 14. Ne4 a6 15. Nxf6+ Bxf6 16. Bc1 Qe8 17. Bb1 Bb5 18. Qe4 g6 19. Rf3
Bg7 20. Rh3 Qe7 21. Nf3 Bc6 22. Qe1 {
Eckhardt,W (2186)-Seifert,V (2136)/Bayern 1999/EXT 2001/1-0 (38)}) ({RR} 7...
Nc6 8. a3 b6 9. Qe2 Bb7 10. O-O-O Qd5 11. Kb1 O-O-O 12. Rhe1 Ng4 13. Bg1 Rhe8
14. Nc4 Bf6 15. h3 Nh6 16. Be4 Qh5 17. Nce5 Bxe5 18. dxe5 f5 19. exf6 gxf6 20.
Qc4 Rxd1+ 21. Rxd1 Na5 22. Bxb7+ {
Salles,M (2075)-Da Silva,C (1852)/Maravilhosa 2016/CBM 170 Extra/1-0 (63)}) 8.
Qe2 Nc6 9. c3 a6 $146 ({RR} 9... Bd7 10. O-O Nxe3 11. Qxe3 Bf6 12. Ne4 Qe7 13.
Qf4 O-O-O 14. Rad1 h6 15. Nxf6 Qxf6 16. Qd2 Rdf8 17. b4 g5 18. b5 g4 19. bxc6
gxf3 20. Rxf3 Qe7 21. cxd7+ Qxd7 22. Qe2 Qc6 23. Be4 Qb6 24. Rb1 {
Pareux,M (1570)-Rogues,J (1470)/Loire 2006/EXT 2008/1-0}) ({RR} 9... f5 10.
O-O-O Bf6 11. h4 Qe7 12. Nb3 Bd7 13. Nc5 O-O-O 14. Ba6 Kb8 15. Bxb7 Nb6 16. a4
Nxa4 17. Qb5 {1-0 Stephan,U-Meuer,H/Eppingen 1988/GER}) 10. O-O O-O 11. Nc4
Nxe3 12. Qxe3 Bf6 13. Qe4 g6 14. Ne3 Bg7 15. g4 Rb8 16. h4 Bd7 17. h5 Ne7 18.
Ng5 Bc6 19. Qf4 Nd5 20. Nxd5 Qxd5 21. Be4 Qd6 22. Qf3 Qe7 23. Nh3 Bxe4 24. Qxe4
Qh4 25. Rf3 Rbe8 26. Nf2 f5 27. Qe2 fxg4 28. Rxf8+ Rxf8 29. hxg6 Qg3+ 30. Kf1
h5 31. Rd1 Rf6 32. Rd3 Rxf2+ 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.2"]
[White "Vaklinov, Vasil"]
[Black "Babatov, Martin"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "2099"]
[BlackElo "1737"]
[PlyCount "85"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Bg4 5. Bc4 e6 6. h3 Bxf3 7. Qxf3 Nf6 8.
Nxf6+ Qxf6 9. Qxf6 gxf6 10. d4 ({RR} 10. O-O Bg7 11. f4 f5 12. a4 Nd7 13. a5 a6
14. Rb1 Nf6 15. c3 h5 16. d3 O-O-O 17. Bd2 Nd5 18. Bb3 Bf8 19. Rf3 h4 20. Bd1
Bd6 21. Be2 Rhg8 22. b4 Rg6 23. c4 Nc7 24. Be1 Be7 {
Yanofsky,D (2460)-Reilly,B/Amsterdam 1954/EXT 2001/1/2 (42)}) 10... Rg8 $146 ({
RR} 10... Nd7 11. Be3 Nb6 12. Bb3 ({RR} 12. Be2 h5 13. h4 Nd5 14. Bd2 Bh6 15.
Bxh6 Rxh6 16. O-O-O f5 17. Bf3 Ke7 18. g3 Rd8 19. Rhe1 Nf6 20. Re3 Ng4 21. Re2
Kf6 22. Rd3 Rhh8 23. Bxg4 fxg4 24. f4 gxf3 25. Rxf3+ Ke7 26. Ref2 f5 {
Yumashev,V (1813)-Gorelov,V/Tambov 2013/EXT 2014/1-0 (56)}) 12... Nd5 13. c4
Nxe3 14. fxe3 Bb4+ 15. Ke2 Ke7 16. a3 Bd6 17. g4 Rag8 18. Bc2 h5 19. Kf3 hxg4+
20. hxg4 Kf8 21. Be4 Kg7 22. a4 Bc7 23. b3 Rxh1 24. Rxh1 Rh8 25. Rxh8 {
Gurrea Martinez,J (1880)-Lorente Ibanez,L (1944)/Alfaro 2001/EXT 2003/1/2 (54)}
) ({RR} 10... Bd6 11. Bd2 Nd7 12. O-O-O O-O-O 13. a3 c5 14. Be3 f5 15. g4 f4
16. dxc5 Nxc5 17. Rxd6 Rxd6 18. Bxc5 Rc6 19. b4 a6 20. Bb3 h5 21. Bd4 Rd8 22.
Bf6 Rd3 23. gxh5 {
1-0 Hasanagic,A (1860)-Holzbauer,J (2123)/Feffernitz 2005/CBM 108 Extra}) 11.
O-O Bd6 12. f4 f5 13. Be3 Nd7 14. Bb3 O-O-O 15. Rad1 Nf6 16. Rf3 Rg6 17. Kh2
Rdg8 18. g3 Ne4 19. Rg1 h5 20. h4 Nf6 21. Bf2 Ng4+ 22. Kh3 Nxf2+ 23. Rxf2 c5
24. c3 cxd4 25. cxd4 Rg4 26. Kh2 R4g7 27. Bd1 Rh7 28. Bf3 Kb8 29. Rc2 Rhg7 30.
Rgg2 Rh7 31. a3 f6 32. Rce2 Re8 33. Rg1 e5 34. dxe5 fxe5 35. Rd1 Bc7 36. Rd5 e4
37. Rxf5 Rhe7 38. Rxe4 Rxe4 39. Bxe4 Rxe4 40. Rf8+ Bd8 41. Rxd8+ Kc7 42. Rd2
Kc6 43. Kg2 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.4"]
[White "Petrov, Vladimir Ol."]
[Black "Tsyntsarski, Boyko"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2028"]
[BlackElo "1672"]
[PlyCount "123"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nf6 5. Nc3 Bg4 6. Qb3 ({RR} 6. Be2 Bxe2
7. Ngxe2 e6 ({RR} 7... g6 8. Qb3 Qc8 9. Bf4 Bg7 10. Nd5 Nxd5 11. cxd5 O-O 12.
Rc1 c6 13. dxc6 bxc6 14. O-O Nd7 15. Qa4 Nb6 16. Qxc6 Qa6 17. Nc3 Bxd4 18. Nd5
Qxa2 19. Nxe7+ Kh8 20. Bh6 Bg7 21. Bxg7+ Kxg7 22. Qc3+ {
Sulskis,S (2546)-Bieliauskas,M (2169)/Vilnius 2016/CBM 172 Extra/1-0 (51)}) 8.
O-O Be7 9. Bf4 O-O 10. Qb3 Qc8 11. d5 Na6 12. Rad1 exd5 13. cxd5 Bd6 14. Rd4
Re8 15. Ng3 Bc5 16. Rd3 c6 17. Rf3 Nb4 18. dxc6 Nxc6 19. Nb5 a6 20. Bd6 axb5 {
Kurajica,B (2515)-Bronstein,D (2555)/Vrsac 1979/EXT 2002/1/2}) 6... Nc6 7. d5
$146 ({RR} 7. Qxb7 Nxd4 8. Bd3 Rb8 9. Qxa7 Ra8 10. Qb7 Ra5 11. Be3 Bc8 12. Qb8
Nd7 13. Qb4 c5 {0-1 Oette,H-Heilemann,M/Hamburg 1951/EXT 2007}) 7... Nd4 8.
Qa4+ Qd7 9. Qxd7+ Kxd7 10. Bd3 Bf5 11. Bxf5+ Nxf5 12. Nf3 Nd6 13. Ne5+ Ke8 14.
f3 Nd7 15. Nxd7 Kxd7 16. b3 Re8 17. Ne4 Nxe4 18. fxe4 e6 19. O-O Bc5+ 20. Kh1
exd5 21. Rxf7+ Be7 22. exd5 Ref8 23. Rxf8 Rxf8 24. Be3 Bf6 25. Re1 Bc3 26. Rc1
Bb2 27. Rb1 Bc3 28. Kg1 Re8 29. Kf2 Rf8+ 30. Ke2 Be5 31. h3 Re8 32. Rf1 Bd4 33.
Rf3 Kd6 34. Kd3 Bf6 35. Bf4+ Kd7 36. Re3 Rf8 37. g4 Bd8 38. Be5 Bf6 39. Rf3 Be7
40. Rxf8 Bxf8 41. Ke4 g6 42. h4 c6 43. h5 cxd5+ 44. Kxd5 a6 45. a4 Be7 46. c5
Bg5 47. b4 Bd2 48. b5 axb5 49. axb5 Ba5 50. Bd6 Bd2 51. c6+ bxc6+ 52. bxc6+ Kc8
53. Ke6 gxh5 54. gxh5 h6 55. Kf6 Bg5+ 56. Kf5 Bd2 57. Bf4 Bxf4 58. Kxf4 Kc7 59.
Kf5 Kxc6 60. Kg6 Kd7 61. Kxh6 Ke8 62. Kg7 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.5"]
[White "Georgiev, Nikolay Zh."]
[Black "Krustev, Krasimir S."]
[Result "0-1"]
[ECO "C27"]
[WhiteElo "1572"]
[BlackElo "1970"]
[PlyCount "72"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Nc6 6. Nf3 (6. Nb5 $142 g6 7.
Qf3 f5 ({RR} 7... f6 8. Qd5 Qe7 9. Nxc7+ Kd8 10. Nxa8 b6 11. Nxb6 axb6 12. Qd3
Bb7 13. Ne2 Nb4 14. Qc3 Nd5 15. Bxd5 Bxd5 16. O-O Ne4 17. Qe3 Qe6 18. d3 Bc5
19. d4 exd4 20. Nxd4 Qe5 21. c3 Re8 22. Qh3 {
Grimberg,B (2365)-Ginsburg,G (2516)/Nuremberg 2012/CBM 150 Extra/1-0 (35)}) ({
RR} 7... Nf5 8. g4 d6 9. gxf5 Bxf5 10. Ne2 Qe7 11. Ng3 Be6 12. Bxe6 fxe6 13.
Ne4 O-O-O 14. d3 d5 15. Ng5 Bg7 16. Qf7 Rde8 17. Qxe7 Rxe7 18. c3 h6 19. Nh3 g5
20. f3 Rf7 21. Rf1 Rhf8 22. Ng1 {
Galko,T (1901)-Barnoth,R (1704)/Hungary 2013/EXT 2014/1/2 (52)}) 8. Qd5 Qe7 9.
Nxc7+ $16) 6... g6 7. Qg4 Bg7 8. O-O $146 ({RR} 8. d3 Na5 9. Bd2 Nxb3 10. axb3
Nf5 11. O-O-O d6 12. Qe4 c6 13. g4 Nh4 14. Bg5 Bf6 15. Bxh4 Bxh4 16. d4 Bg5+
17. Kb1 f5 18. gxf5 gxf5 19. Qe2 e4 20. h4 Be7 21. Ng5 Bxg5 22. Qh5+ Kd7 {
Popa,C (2101)-Chiodini,P/Estensi 2001/CBM 082 Extra/1/2 (35)}) 8... O-O 9. d3
Nd4 10. Bg5 Nxf3+ 11. gxf3 Bf6 12. Bh6 Re8 13. Nd5 c6 14. Nxf6+ Qxf6 15. Rfe1
Nf5 16. Bg5 Qg7 17. d4 d5 18. dxe5 Rxe5 19. Bd2 Be6 20. Bc3 d4 21. Bxe6 Rxe6
22. Rxe6 fxe6 23. Bd2 e5 24. Re1 Re8 25. c3 c5 26. Qe4 Qf7 27. b3 Nd6 28. Qg4
Qf5 29. cxd4 Qxg4+ 30. fxg4 exd4 31. Rxe8+ Nxe8 32. Bf4 Nf6 33. f3 Kf7 34. Kf2
Ke6 35. Ke2 Kd5 36. Kd3 b5 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.6"]
[White "Metev, Martin"]
[Black "Mladenov, Andrey"]
[Result "0-1"]
[ECO "A38"]
[WhiteElo "1965"]
[BlackElo "1558"]
[PlyCount "72"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 Nc6 3. c4 d6 4. g3 g6 5. Bg2 Bg7 6. O-O Nf6 7. d3 O-O 8. Nc3 e6
({RR} 8... e5 9. h3 h6 10. Be3 Be6 {
1/2 Campora,D (2542)-Giaccio,A (2517)/Pinamar 2002/CBM 088}) 9. a3 $146 ({RR} 
9. d4 cxd4 10. Nxd4 e5 11. Nc2 Be6 12. b3 a6 13. Bg5 Qd7 14. Bxf6 Bxf6 15. Ne3
Bg7 16. Ned5 Bxd5 17. Nxd5 Qd8 18. Qd2 Nd4 19. Rac1 Rb8 20. Nc3 Qd7 21. Ne2
Nxe2+ 22. Qxe2 Rfd8 23. Rfd1 Qe6 {
Todaro,A (1748)-Bruno,A/Nicolosi 2014/CBM 163 Extra/1-0 (58)}) ({RR} 9. Bg5 Rb8
10. Qd2 Qc7 11. Bf4 a6 12. a4 Na5 13. Ra3 Re8 14. e5 Nh5 15. exd6 Qb6 16. d7
Bxd7 17. Bxb8 Rxb8 18. Re1 Nb3 19. Qe2 Bc6 20. Ne4 Nf6 21. Neg5 h6 22. Ne4 Nxe4
23. dxe4 Nd4 {
Mendes,R (1892)-Theodoro,M (1731)/Sao Paulo 2014/CBM 158 Extra/0-1 (52)}) ({RR
} 9. Nh4 Nd7 10. f4 f5 11. Nf3 Nd4 12. Ne2 Nxf3+ 13. Bxf3 Qb6 14. Rb1 a5 15.
Bd2 a4 16. Bc3 e5 17. exf5 Rxf5 18. Qe1 Bh6 19. g4 Rf7 20. g5 Bg7 21. Bd5 Nf8
22. Bxf7+ Kxf7 23. Qg3 Bf5 {
Bolte,C (2047)-Groenwald,S/Bad Zwesten 2006/CBM 110 Extra/1-0 (35)}) 9... d5
10. Qc2 d4 11. Ne2 a5 12. Rb1 a4 13. h3 Qb6 14. Nh2 e5 15. f4 Nd7 16. f5 Re8
17. g4 Nf8 18. Ng3 Na5 19. Bd2 Bd7 20. g5 Qb3 21. Qc1 Qxd3 22. Bxa5 Qxg3 23.
Rf3 Qh4 24. Be1 Qxe4 25. fxg6 Qxg6 26. b4 axb3 27. Rfxb3 e4 28. Rxb7 Bc6 29.
R7b6 Nd7 30. R6b3 Ne5 31. Bg3 Ra4 32. Rb8 Qe6 33. Rxe8+ Qxe8 34. Ng4 Ra8 35.
Nf6+ Bxf6 36. gxf6 e3 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.8"]
[White "Kolev, Nikola Vl."]
[Black "Sapareva, Magdalena"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1909"]
[BlackElo "1503"]
[PlyCount "61"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. f4 f5 2. Nc3 Nf6 3. Nf3 d6 $146 ({RR} 3... d5 4. e3 e6 5. b3 b6 6. Bb2 Bb7
7. Bb5+ c6 8. Be2 Nbd7 9. O-O Bd6 10. a4 a6 11. d4 O-O 12. Ng5 Qe7 13. g4 c5
14. Nh3 fxg4 15. Bxg4 Nxg4 16. Qxg4 Rf6 17. Kh1 Raf8 18. Ne2 {
Osorio,C (2192)-Soto,C (2081)/Medellin 2013/CBM 153 Extra/0-1 (50)}) ({RR} 3...
e6 4. e3 b6 5. b3 Bb7 6. Bb2 Be7 7. Be2 O-O 8. O-O d5 9. Qe1 Ne4 10. d3 Nxc3
11. Bxc3 Bf6 12. Bxf6 Rxf6 13. b4 Nd7 14. d4 c5 15. c3 c4 16. a4 a6 17. Ne5
Nxe5 18. fxe5 {
Avetisyan,A-Gavrilenko,V (2018)/Zhukovsky 2010/EXT 2012/1/2 (103)}) 4. e3 Nc6
5. d4 e6 6. Bd3 Bd7 7. e4 fxe4 8. Nxe4 Nxe4 9. Bxe4 d5 10. Bd3 Qf6 11. c3 O-O-O
12. Qc2 h6 13. Rf1 Bd6 14. g3 Ne7 15. Bd2 c5 16. dxc5 Bxc5 17. O-O-O Kb8 18.
Ne5 Be8 19. Ng4 Qf8 20. Rde1 Qg8 21. Kb1 g5 22. Nf6 Qg7 23. Nxe8 Rdxe8 24. Rxe6
gxf4 25. Bxf4+ Ka8 26. Rfe1 Rd8 27. b4 Bxb4 28. cxb4 Rc8 29. Rxe7 Qd4 30. Qd2
a6 31. Be5 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.9"]
[White "Stoyanov, Plamen"]
[Black "Andreev, Dobrotich"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "1470"]
[BlackElo "1881"]
[PlyCount "62"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. e3 Bg4 5. h3 Bxf3 6. Qxf3 e6 7. Nc3 Be7 ({RR} 
7... Bb4 8. Bd3 Nbd7 9. O-O O-O 10. Rd1 Qe7 11. Qe2 dxc4 12. Bxc4 e5 13. d5
Bxc3 14. dxc6 Bxb2 15. Bxb2 bxc6 16. Rac1 c5 17. Bb3 a5 18. Qc2 Rfb8 19. Ba1
Rc8 20. Qf5 a4 21. Bc4 Rab8 22. Rd2 {
Ivanchuk,V (2787)-Dreev,A (2607)/Moscow 2007/EXT 2008/1-0 (59)}) 8. Bd3 O-O 9.
O-O Nbd7 10. cxd5 $146 ({RR} 10. Rd1 Qc7 ({RR} 10... Qb6 11. e4 dxe4 12. Nxe4
Rfd8 13. Be3 Qa5 14. Bd2 Qb6 15. Bc3 Nxe4 16. Qxe4 Nf8 17. Rab1 Bf6 18. Qf4 Rd7
19. Qd2 Qd8 20. Qe3 Bg5 21. Qf3 Bf6 22. Be4 Bxd4 23. Bxd4 Rxd4 24. Rxd4 Qxd4
25. Qd3 {Keyser,R (1925)-Riha,P (1743)/Kiel 2016/CBM 173 Extra/0-1 (60)}) ({RR
} 10... a6 11. a4 Re8 12. e4 dxe4 13. Nxe4 Nxe4 14. Qxe4 Nf8 15. Be3 Bf6 16. a5
Qd6 17. Be2 Ng6 18. g3 Rad8 19. Bf3 Re7 20. Qc2 Rc7 21. Qb3 Qe7 22. d5 c5 23.
dxe6 Rxd1+ 24. Rxd1 fxe6 25. Qb6 {
Mrndjic,M (2261)-Mumanovic,A (2020)/Bihac 2014/EXT 2015/1-0 (41)}) ({RR} 10...
Re8 11. Qe2 dxc4 12. Bxc4 Nb6 13. Bd3 Qc7 14. b3 Bb4 15. Bb2 Nfd5 16. Ne4 f5
17. Ng5 h6 18. Nf3 Bc3 19. Rac1 Bxb2 20. Qxb2 Rad8 21. b4 a6 22. Qb3 Qe7 23.
Rb1 Nd7 24. a4 g6 25. Rdc1 {
Corovic,S (2110)-Janjic,N (1790)/Sarajevo 2014/CBM 160 Extra/1/2 (37)}) 11. e4
dxe4 12. Nxe4 Nxe4 13. Qxe4 Nf6 14. Qe2 Rfd8 15. b3 Ne8 16. Be3 {
1/2 Gereben,E (2325)-Mitov,B/Sandomierz 1976/EXT 2000}) 10... exd5 11. Rd1 Re8
12. a3 a5 13. Bd2 Bd6 14. e4 dxe4 15. Nxe4 Nxe4 16. Bxe4 Nf6 17. Bf5 Nd5 18.
Re1 Qf6 19. Be4 Qxd4 20. Bxd5 Rxe1+ 21. Rxe1 Qxd5 22. Qxd5 cxd5 23. Bc3 b6 24.
Rd1 Rd8 25. Kf1 Bc5 26. b4 axb4 27. axb4 Be7 28. Bd4 b5 29. Bc5 Bxc5 30. bxc5
Kf8 31. Rb1 Rb8 {...} 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.10"]
[White "Yontar, Sabrican Onay"]
[Black "Doychev, Ivan"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1829"]
[BlackElo "1188"]
[PlyCount "69"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. b3 Nc6 3. Bb2 e6 4. Nf3 Nf6 5. e5 Nd5 6. Bb5 Be7 7. O-O O-O 8. d3 (
{RR} 8. Bxc6 bxc6 ({RR} 8... dxc6 9. d3) 9. d3 f6 ({RR} 9... f5) 10. Nc3 fxe5
11. Nxe5 Qe8 12. Ne4 d6 13. Nc4 Qd8 14. a3 e5 15. Qe1 Nf4 ({RR} 15... a5) 16.
Ng3 h5 17. Ne2 Nd5 ({RR} 17... h4) 18. b4 cxb4 19. axb4 Qe8 20. f3 Qg6 21. Kh1
h4 22. h3 Bd7 {Spassky,B (2630)-Hernandez Onna,R (2465)/Buenos Aires 1978/EXT
2000/[Averbakh]/1-0 (38)}) ({RR} 8. Re1 b6 9. d4 cxd4 10. Nxd4 Bb7 11. Nd2 Qc7
12. Bxc6 dxc6 13. Qg4 Bb4 14. N4f3 Rfd8 15. c4 Ne7 16. Ne4 Bxe1 17. Nf6+ Kh8
18. Qh5 Bxf2+ 19. Kxf2 gxf6 20. exf6 Nf5 21. Be5 Qd7 22. Ng5 h6 {
Khoudgarian,N (2116)-Demchenko,S (1870)/Ottawa 2016/CBM 174 Extra/1-0}) 8...
Na5 9. d4 a6 $146 ({RR} 9... Qb6 10. Bd3 c4 11. Be4 d6 12. Re1 dxe5 13. Nxe5
Nf6 14. Bf3 Rd8 15. Qe2 cxb3 16. axb3 Nc6 17. Nxc6 bxc6 18. Nd2 Bb7 19. Nc4 Qc7
20. Bc3 Qc8 21. Na5 Nd5 22. Bd2 Nb4 23. Rec1 Rb8 24. Nxb7 {
Zambor,N (2333)-Hanko,P (2205)/Tatranske Zruby 2004/CBM 102 Extra/1-0 (59)})
10. Bd3 h6 11. Nc3 Nxc3 12. Bxc3 b5 13. Be4 Nb7 14. d5 d6 15. dxe6 fxe6 16.
exd6 Bxd6 17. Qe2 Qe7 18. Ne5 Bxe5 19. Bxe5 Ra7 20. Rad1 Rd8 21. Bb8 Ra8 22.
Rxd8+ Qxd8 23. Rd1 Qf6 24. Be5 Qf7 25. Qg4 a5 26. Bg6 Qe7 27. Be4 Qf7 28. h4
Ra7 29. h5 c4 30. Qg6 Ra8 31. Qh7+ Kf8 32. Bg6 Qd7 33. Qh8+ Ke7 34. Qxg7+ Kd8
35. Qf8# 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "1.11"]
[White "Doykov, Stoycho"]
[Black "Timev, Anzhelo"]
[Result "1/2-1/2"]
[ECO "D37"]
[BlackElo "1805"]
[PlyCount "80"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. e3 Be7 5. Nf3 Nbd7 6. Bd3 c5 ({RR} 6... b6 7.
cxd5 exd5 8. O-O Bb7 9. Qc2 c5 10. dxc5 Bxc5 11. a3 O-O 12. Rd1 Qe7 13. Nd4 Qe5
14. Nf5 Ng4 15. Ng3 d4 16. b4 dxe3 17. bxc5 exf2+ 18. Kh1 Qe1+ 19. Bf1 Nxc5 20.
Bf4 Ne3 21. Bxe3 {
Hansen,B (1732)-Olsen,S (1753)/Faroe Islands 2016/EXT 2017/1-0 (56)}) 7. O-O
dxc4 8. Bxc4 cxd4 $146 ({RR} 8... Nb6 9. Bb5+ ({RR} 9. Bd3 c4 10. Bc2 Nbd5 11.
Ba4+ Bd7 12. Ne5 Nxc3 13. bxc3 O-O 14. Bxd7 Nxd7 15. Nxc4 Rc8 16. Qb3 Qc7 17.
Nd2 Qxc3 18. Rb1 Nb6 19. Nf3 Qxb3 20. Rxb3 Rc2 21. Ba3 Bxa3 22. Rxa3 a6 23. h3
Rfc8 {Nguyen,T-Le,T/Dong Thap 2004/EXT 2007/0-1 (62)}) 9... Bd7 10. Bxd7+ Nfxd7
{1/2 Petrik,K (2216)-Biro,K (2293)/Bratislava 2002/EXT 2004}) 9. Nxd4 O-O 10.
b3 Ne5 11. Be2 a6 12. Bb2 Qa5 13. a3 Rd8 14. b4 Qb6 15. Na4 Qa7 16. Qb3 Ng6 17.
Nf3 b5 18. Nc3 Bb7 19. Rad1 Nd5 20. Nxd5 Bxd5 21. Qc2 Rac8 22. Qb1 Qb7 23. Rc1
Bd6 24. Rxc8 Rxc8 25. Rc1 Rd8 26. Bd4 e5 27. Bc5 Bb8 28. Rd1 Re8 29. Qd3 Bc6
30. Qc3 Qc8 31. Bd6 Bxf3 32. Qxc8 Rxc8 33. gxf3 Ba7 34. f4 f6 35. Bf3 exf4 36.
exf4 Rd8 37. Bc7 Rxd1+ 38. Bxd1 Bd4 39. Bb3+ Kf8 40. a4 Ke7 1/2-1/2

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "2.1"]
[White "Hristov, Hristo M."]
[Black "Gelemerov, Yane"]
[Result "1-0"]
[ECO "C46"]
[WhiteElo "2138"]
[BlackElo "1926"]
[PlyCount "45"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. d4 exd4 5. Nxd4 Bxc3+ ({RR} 5... Qe7 6. Ndb5
Ba5 7. Be2 a6 8. Nd4 Qxe4 9. Nxc6 Bxc3+ 10. bxc3 Qxc6 11. O-O Ne7 12. Bg5 Qc5
13. Be3 Qa5 14. Qd4 O-O 15. Bd3 Nf5 16. Bxf5 Qxf5 17. Bf4 d6 18. Rfe1 Be6 19.
Re3 Rae8 20. Rae1 {Semenova,E (2175)-Ponkratov,P (2593)/Khanty-Mansiysk 2011/
CBM 144 Extra/1/2 (57)}) ({RR} 5... Nxd4 6. Qxd4 Bxc3+ 7. Qxc3 Nf6 8. Bg5 O-O
9. e5 Qe8 10. O-O-O Ng4 11. Qd4 c5 12. Qxc5 b6 13. Qd4 Qxe5 14. Qxg4 d6 15. Qg3
Qxg3 16. hxg3 f6 17. Bf4 Bg4 18. Bxd6 Bxd1 19. Bxf8 Bh5 20. Bxg7 {
Jumani,B (29)-Yau,M/Bournemouth 2016/CBM 173 Extra/1-0 (53)}) 6. bxc3 d6 7.
Nxc6 bxc6 8. Bd3 $146 ({RR} 8. Qd4 Qf6 9. Be3 Rb8 10. Qxf6 Nxf6 11. Bxa7 Ra8
12. Bd4 Nxe4 13. Bxg7 Rg8 14. Bd3 Nc5 15. Bd4 Nxd3+ 16. cxd3 {
1/2 Kotov,D (2133)-Danov,A (2271)/Nizhnij Novgorod 2008/CBM 122 Extra}) 8...
Qf6 9. Bd2 Ne7 10. O-O Ng6 11. f4 O-O 12. Rb1 c5 13. Qh5 Re8 14. f5 Nf8 15. e5
dxe5 16. Be4 c6 17. Bg5 Qd6 18. Rbd1 Qc7 19. f6 Ng6 20. Bh6 gxf6 21. Rxf6 Re6
22. Bg5 Qe7 23. Rxe6 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "2.2"]
[White "Andreev, Dobrotich"]
[Black "Vaklinov, Vasil"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "1881"]
[BlackElo "2099"]
[PlyCount "56"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5 5. Nc3 ({RR} 5. Bb5 dxe4 6. O-O Bd7
7. Nc3 Nxd4 8. Qxd4 Bxb5 9. Qxd8+ Rxd8 10. Nxb5 a6 11. Nc7+ Kd7 12. Bf4 Kc6 13.
Rfd1 Rxd1+ 14. Rxd1 Nf6 15. Rd8 g6 16. Be5 Bg7 17. Rd4 Rc8 18. Rc4+ {
1/2 Acs,P (2600)-Varga,Z (2533)/Heviz 2003/CBM 096}) 5... dxe4 6. Bb5 ({RR} 6.
Nxc6 Qxd1+ 7. Kxd1 bxc6 8. Nxe4 Bf5 9. Bd3 Rd8 10. Bd2 g6 11. Ke2 Bg7 12. Rab1
e6 13. Ba5 Rd5 14. Bb4 Re5 15. f3 Bxe4 16. fxe4 Nf6 17. Kf3 Kd7 18. Rhd1 Kc7
19. Re1 Rh5 20. h3 Bf8 {
Cabrera Novoa,E (1375)-Duque Garcia,J/Medellin 2016/CBM 171 Extra/0-1 (55)})
6... Bd7 7. Be3 e5 $146 ({RR} 7... Nf6 8. O-O ({RR} 8. Qe2 e5 9. Bxc6 bxc6 10.
Nb3 Bb4 11. Qc4 Qe7 12. a3 Bxc3+ 13. bxc3 Qe6 14. Qc5 Nd5 15. O-O f5 16. c4
Nxe3 17. fxe3 Qe7 18. Rad1 Qxc5 19. Nxc5 Rd8 20. Nb7 Rb8 21. Nd6+ Ke7 22. Nxf5+
Bxf5 {Demidowicz,M (1950)-Kasperek,J (1990)/Leba 2007/EXT 2011/1/2 (37)}) 8...
e5 9. Nxc6 bxc6 10. Bc4 h6 11. Qe1 Be7 12. Rd1 Qc7 13. Na4 Bg4 14. Rd2 O-O 15.
Bc5 Bxc5 16. Nxc5 Qa5 17. Qe3 Bf5 18. h3 Qb4 19. Bb3 Qb6 20. Rfd1 Qc7 21. Bc4
Rad8 22. b4 {
Boabaid,J (1812)-Rosa,J (2038)/Florianopolis 2015/EXT 2016/1-0 (54)}) 8. Bxc6
bxc6 9. Nb3 Bb4 10. Qd2 Nf6 11. a3 Be7 12. Nc5 Bf5 13. O-O-O Qxd2+ 14. Rxd2 O-O
15. h3 h5 16. Rg1 Rfd8 17. Rxd8+ Rxd8 18. g4 hxg4 19. hxg4 Nxg4 20. N3xe4 Nxe3
21. fxe3 Rd5 22. b4 Bxe4 23. Nxe4 f5 24. Ng3 e4 25. Nh5 g5 26. c4 Rd3 27. Ng3
Rxa3 28. Nxf5 Ra1+ 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "2.5"]
[White "Krustev, Krasimir S."]
[Black "Yontar, Sabrican Onay"]
[Result "1-0"]
[ECO "C53"]
[WhiteElo "1970"]
[BlackElo "1829"]
[PlyCount "69"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Qe7 5. O-O d6 6. d4 Bb6 7. h3 Nf6 8. d5 ({
RR} 8. Re1 Bd7 9. Na3 O-O 10. Bf1 exd4 11. Nxd4 Rae8 12. Nac2 Qd8 13. Qd3 d5
14. Nxc6 Bxc6 15. exd5 Nxd5 16. Bd2 Qh4 17. Nd4 Nb4 18. Qf5 Be4 19. Bg5 Bxf5
20. Bxh4 Bxd4 21. cxd4 Nc2 22. Rxe8 Rxe8 {
Duer,A (2420)-Haik,A (2440)/Amsterdam 1980/MCD/1/2 (65)}) ({RR} 8. Bg5 h6 9.
Bxf6 Qxf6 10. dxe5 dxe5 11. Qe2 g5 12. Rd1 g4 13. hxg4 Bxg4 14. Nbd2 Rg8 15.
Kf1 O-O-O 16. b4 Qg6 17. a4 Qh5 18. Ke1 a5 19. Bd5 Ne7 20. Bb3 axb4 21. cxb4
Nc6 22. Nc4 Bd4 {
Tomulic,T (1842)-Matanovic,L (2081)/Sv Filip i Jakov 2014/EXT 2016/0-1 (51)})
8... Nb8 9. Be2 $146 ({RR} 9. Qc2 O-O ({RR} 9... Nbd7 10. b4 Nf8 11. a4 a6 12.
a5 Ba7 13. b5 Ng6 14. Be3 axb5 15. Bxb5+ Bd7 16. Bxd7+ Qxd7 17. Nbd2 O-O 18.
Rfb1 Rfb8 19. c4 Nh5 20. c5 Nhf4 21. Kh2 Bxc5 22. Bxc5 dxc5 23. Qxc5 Nxg2 24.
Nxe5 {Khidirnabiev,R (1939)-Efimov,I (2119)/Saratov 2011/CBM 146 Extra/0-1 (51)
}) 10. a4 a6 11. a5 Ba7 12. Be3 Nbd7 13. Nbd2 h6 14. b4 Nh7 15. Bd3 Ndf6 16. c4
Bd7 17. b5 Bxe3 18. fxe3 Rfc8 19. Rab1 c5 20. dxc6 bxc6 21. b6 Rcb8 22. c5 dxc5
23. Nc4 Bc8 {
Deste,D (1965)-De Almeida,E (1969)/Porto Alegre 2012/CBM 150 Extra/1-0 (40)}) (
{RR} 9. a4 a6 10. Re1 h6 11. Nbd2 g5 12. Nf1 g4 13. hxg4 Bxg4 14. Be3 Nbd7 15.
Bxb6 cxb6 16. Ne3 Rg8 17. Nxg4 Rxg4 18. Nd2 O-O-O 19. f3 Rg6 20. Nf1 Rdg8 21.
Ne3 Nh5 22. g4 Nf4 23. Nf5 Qf6 {
Vujatovic,D (2088)-Dabo Peranic,R (2318)/Osijek 2012/EXT 2014/0-1 (38)}) 9...
Nxe4 10. Qa4+ Bd7 11. Qxe4 f5 12. Qh4 Qf8 13. Be3 Na6 14. Bxa6 bxa6 15. Bxb6
axb6 16. Re1 Qf7 17. c4 O-O 18. Nc3 h6 19. Rad1 Qg6 20. Qg3 Qh7 21. Nh2 f4 22.
Qf3 g5 23. Ne4 Qg6 24. Qe2 h5 25. f3 Kg7 26. Rc1 Kh6 27. b4 a5 28. c5 axb4 29.
cxd6 cxd6 30. Rc7 Rfd8 31. Qf2 Ra6 32. Qc2 Bf5 33. Qc4 b5 34. Qxb4 Rxa2 35. Rc6
1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "2.7"]
[White "Canadell Ruiz, Samuel Sandal"]
[Black "Doykov, Stoycho"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1794"]
[PlyCount "56"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 e6 2. e4 c5 3. Nf3 d5 4. e5 cxd4 5. Qxd4 Nc6 6. Bb5 Bd7 7. Bxc6 Bxc6 ({RR
} 7... bxc6 8. O-O Ne7 9. Nbd2 Nf5 10. Qf4 Be7 11. Nb3 a5 12. g4 a4 13. gxf5
axb3 14. fxe6 Bxe6 15. cxb3 O-O 16. Kh1 c5 17. Rg1 d4 18. Qh6 g6 19. Rg3 Qd5
20. Kg1 Rfe8 21. Bf4 Bd7 22. Ng5 {
Motwani,P (2425)-Luther,T (2470)/Copenhagen 1991/EXT 1997/0-1}) 8. O-O ({RR} 8.
Nc3 Ne7 9. O-O Nf5 10. Qd3 a6 11. a4 Rc8 12. Nd4 Nxd4 13. Qxd4 Qc7 14. f4 Bd7
15. Kh1 Bc5 16. Qd3 O-O 17. Bd2 f6 18. b4 Be7 19. Qd4 Qc4 20. Qxc4 Rxc4 21. b5
Bb4 22. Nb1 Bxd2 {
Beltran Cervantes,D (1559)-Pena,J (1652)/Villamaria 2016/CBM 173 Extra/0-1 (56)
}) 8... Ne7 9. Bg5 h6 10. Bh4 $146 ({RR} 10. Qf4 Qc7 11. Bxe7 Bxe7 12. Nd4 g5
13. Qg3 h5 14. Nc3 a6 15. Nce2 Bd7 16. Qe3 Bb5 17. Nxb5 axb5 18. Nd4 b4 19.
Rfc1 Qb6 20. c3 Kd7 21. Qd2 Rhc8 22. c4 Bc5 23. Nf3 d4 24. Rd1 Ke7 {Lucena Peri
anez,J (1658)-Navarro Escura,M (1741)/Vall del Tenes 2012/CBM 148 Extra/1-0
(42)}) 10... Qc7 11. Bxe7 Bxe7 12. Qg4 O-O 13. Nbd2 Bb5 14. Rfc1 Be2 15. c4
dxc4 16. Nxc4 Rac8 17. h3 Qc6 18. Ne3 Bxf3 19. gxf3 Qb5 20. Nc4 Rc6 21. Rc2
Rfc8 22. Rac1 Qd5 23. Rd2 Rxc4 24. Rxc4 Rxc4 25. Rxd5 Rxg4+ 26. fxg4 exd5 27.
f4 Kf8 28. Kf2 Bc5+ 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "2.8"]
[White "Babatov, Martin"]
[Black "Ivanov, Oleg M."]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1737"]
[BlackElo "1548"]
[PlyCount "79"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 d5 2. d4 c5 3. Bf4 Nc6 ({RR} 3... cxd4 4. Bxb8 Qa5+ 5. c3 Rxb8 6. Qxd4
Nf6 7. Nbd2 e6 8. Nb3 Qb6 9. Qxb6 axb6 10. e3 Bd6 11. Bb5+ Ke7 12. O-O Ra8 13.
c4 dxc4 14. Bxc4 Bd7 15. Nbd2 {
1/2 Sokolov,A (2580)-Westerinen,H (2410)/Gausdal 1996/CBM 051 Extra}) ({RR} 
3... Qb6 4. Nc3 e6 5. b3 Nf6 6. e3 cxd4 7. exd4 Nc6 8. Bb5 Bb4 9. Bxc6+ Qxc6
10. O-O Bxc3 11. Ne5 Qb6 12. Rb1 Bxd4 13. Nf3 Bc5 14. c3 Ne4 15. Rb2 Nxc3 16.
Rc2 Nxd1 17. Rxd1 Bd7 18. Rdc1 {
Funayama SA,Y (1787)-Tumenas,D (1725)/Sao Paulo 2016/CBM 174 Extra/0-1}) 4. e3
Qb6 5. b3 Bg4 $146 ({RR} 5... cxd4 6. exd4 Bg4 7. Be3 Nf6 8. Be2 e6 9. O-O Bd6
10. Nbd2 Bxf3 11. Nxf3 Ne4 12. c4 Ba3 13. Bc1 Qa5 14. Bxa3 Qxa3 15. cxd5 exd5
16. Bb5 O-O 17. Bxc6 bxc6 18. Re1 Rfe8 19. Re3 Re6 20. Nd2 {
Salvi,R-Hadad,D/Sao Paulo 1995/EXT 1997/0-1 (44)}) ({RR} 5... e6 6. Bd3 Nf6 7.
Ne5 cxd4 8. Nxc6 bxc6 9. O-O dxe3 10. Bxe3 Bc5 11. Re1 O-O 12. Nc3 Bxe3 13.
Rxe3 Qa5 14. Rf3 e5 15. Rxf6 gxf6 16. Qh5 Rd8 17. Bxh7+ Kf8 18. Qf3 Ke7 19. Ne2
Rh8 20. Bd3 {
Acosta Santana,Y-Gonzalez Rodriguez,J (1885)/Las Palmas 2013/EXT 2014/0-1}) 6.
dxc5 Qxc5 7. Be2 Bxf3 8. Bxf3 Nf6 9. O-O e5 10. Bg3 Be7 11. Nd2 Rd8 12. Rc1 Ne4
13. Bxe4 dxe4 14. Qe2 f5 15. Rfd1 O-O 16. f3 Bg5 17. Bf2 Qb4 18. c3 Qa3 19. Nb1
Qe7 20. Rxd8 Nxd8 21. fxe4 f4 22. exf4 exf4 23. Qc4+ Ne6 24. Rd1 Kh8 25. Rd5 f3
26. g3 b6 27. Nd2 Bxd2 28. Rxd2 Ng5 29. Rd4 Qa3 30. Qd3 Qxa2 31. Qd2 Qa1+ 32.
Qd1 Qxd1+ 33. Rxd1 Nxe4 34. Rd7 Nxc3 35. Rxa7 Rd8 36. Bxb6 Re8 37. Kf2 h6 38.
Bd4 Rg8 39. Bxc3 Kh7 40. Rxg7+ 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "2.9"]
[White "Sapareva, Magdalena"]
[Black "Ginev, Nikola"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1503"]
[BlackElo "1714"]
[PlyCount "46"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. b4 a5 2. b5 c6 3. e3 ({RR} 3. a4 Nf6 ({RR} 3... cxb5 4. axb5 b6 5. e4 Bb7 6.
d3 d6 7. c4 Nf6 8. Nf3 Nbd7 9. Be2 g6 10. O-O Bg7 11. Bb2 O-O 12. Nbd2 Qc7 13.
h3 Rfd8 14. Nh2 e6 15. Ng4 Nxe4 16. Bxg7 Nxd2 17. Qxd2 Kxg7 18. Qh6+ {
Sapareva,M (1649)-Kostov,N (1945)/Sofia 2012/CBM 148 Extra/0-1 (57)}) 4. Bb2 d5
5. e3 Bf5 6. Nf3 e6 7. c4 c5 8. cxd5 exd5 9. d3 Bd6 10. Nbd2 O-O 11. Be2 Re8
12. O-O Nbd7 13. Re1 Ne5 14. Nxe5 Bxe5 15. Bxe5 Rxe5 16. d4 cxd4 17. Nf3 Re8 {
Lapshun,Y (2479)-Oms Fuentes,L (2336)/Barcelona 2007/CBM 120 Extra/1-0 (41)})
3... Nf6 ({RR} 3... e5 4. Bb2 d6 5. bxc6 bxc6 6. c4 Nf6 7. d3 Nbd7 8. Nd2 d5 9.
Ngf3 e4 10. dxe4 dxe4 11. Ne5 Bd6 12. Nxd7 Bxd7 13. Be2 Bf5 14. O-O Qb8 15. Rb1
Bxh2+ 16. Kh1 Be5 17. Ba3 Qc7 18. Qb3 {
Popper,T (2033)-Micanek,T (2088)/Pardubice 2016/EXT 2017/1/2 (58)}) 4. Nc3 $146
({RR} 4. Nf3 g6 5. Bb2 Bg7 6. c4 ({RR} 6. a4 O-O 7. d4 d5 8. Nbd2 Ne4 9. c4
Nxd2 10. Nxd2 dxc4 11. Bxc4 c5 12. Nb3 b6 13. O-O Bb7 14. Qc2 e6 15. Rad1 cxd4
16. Bxd4 Bxd4 17. Rxd4 Qg5 18. f4 Qf6 19. Rfd1 Rc8 20. Qd2 Kg7 {
Vukovic,L (1961)-Bogavac,M/Belgrade 2005/CBM 107 Extra/1-0 (46)}) 6... O-O 7.
a4 d5 ({RR} 7... cxb5 8. cxb5 d5 9. Be2 Nbd7 10. d4 Ne4 11. Qb3 Nb6 12. Nbd2
Be6 13. O-O g5 14. Rfd1 Rc8 15. Qa3 h6 16. Nxe4 dxe4 17. Nd2 Bd5 18. Rac1 Qd7
19. Nb3 Bc4 20. Nc5 Qd5 21. Bxc4 Nxc4 22. Qb3 {
Kool,G (2120)-Neukirch,D (2248)/Dresden 2004/CBM 099 Extra/1-0 (59)}) 8. d4
dxc4 9. Bxc4 cxb5 10. Bxb5 Bd7 11. Nc3 Nc6 12. O-O Nb4 13. Ba3 Bxb5 14. Nxb5
Ne4 15. Qb3 Qd5 16. Qxd5 Nxd5 17. Rfc1 Rfc8 18. Kf1 Bf8 {
Grossmann,P-Franz,G (2165)/Neutraubling 1999/EXT 2005/1/2 (31)}) 4... g6 5. a4
Bg7 6. Rb1 O-O 7. Nf3 d6 8. Be2 e5 9. O-O Re8 10. d3 Qc7 11. Ne4 d5 12. Nxf6+
Bxf6 13. b6 Qd8 14. e4 d4 15. Nd2 Be6 16. Nc4 Bxc4 17. dxc4 Nd7 18. f4 Nc5 19.
fxe5 Bxe5 20. Bf4 Nxe4 21. Rc1 Nc3 22. Qd3 Bxf4 23. Rfe1 Re3 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "2.11"]
[White "Doychev, Ivan"]
[Black "Georgiev, Nikolay Zh."]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1188"]
[BlackElo "1572"]
[PlyCount "100"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O d6 5. c3 Qf6 6. d3 Bg4 ({RR} 6... h6 7.
b4 Bb6 8. Nbd2 ({RR} 8. a4 a6 9. b5 axb5 10. Bxb5 Nge7 11. Be3 O-O 12. Bxb6
cxb6 13. Na3 Ng6 14. Nc4 Qd8 15. Qd2 Na5 16. Qe3 Nxc4 17. Bxc4 Be6 18. Bb5 Nf4
19. d4 Ng6 20. Rab1 Bd7 21. Rb4 Bxb5 22. axb5 Qc7 {
Klonov,J (1232)-Englert,L/Kouty nad Desnou 2016/CBM 174 Extra/1-0 (78)}) 8...
Nge7 9. Bb3 a6 10. Nc4 Ba7 11. Ne3 O-O 12. h3 Be6 13. Nd5 Bxd5 14. exd5 Nb8 15.
Be3 Nd7 16. Bxa7 Rxa7 17. d4 Ng6 18. Re1 Raa8 19. Qd2 Nf4 20. dxe5 Nxe5 21.
Nxe5 {Dolmatov,S (2590)-Jussupow,A (2555)/Yerevan 1982/MCL/0-1}) 7. Bg5 Qg6 8.
Nbd2 Nf6 $146 ({RR} 8... h5 9. b4 Bb6 10. a4 a5 11. Bb5 Nge7 12. Kh1 O-O 13.
Bc4 Rae8 14. Be3 Bxe3 15. fxe3 axb4 16. cxb4 Nxb4 17. Qb3 Bxf3 18. Nxf3 d5 19.
exd5 Qd6 20. e4 Rb8 21. Nxe5 Qxe5 22. Qxb4 b6 23. Qd2 {
Rosero,J (1925)-Torres Rojas,Y (2022)/Bogota 2015/CBM 166 Extra/1-0}) ({RR} 
8... Nge7 9. b4 Bb6 10. a4 a5 11. b5 Nb8 12. Kh1 Nd7 13. h3 h5 14. Qc2 f6 15.
Be3 Bxe3 16. fxe3 Qh6 17. Rae1 Nf8 18. d4 b6 19. Ba2 g5 20. c4 Bd7 21. c5 g4
22. Nh4 Qg5 23. cxb6 {
Sulskis,S (2544)-Rantanen,Y (2375)/Finland 2010/EXT 2012/1-0}) ({RR} 8... f6 9.
Bh4 Nge7 10. a4 a5 11. Qb3 O-O-O 12. Bf7 Qh6 13. Be6+ Bxe6 14. Qxe6+ Rd7 15.
Nb3 Bb6 16. d4 exd4 17. cxd4 Nxd4 18. Nbxd4 Bxd4 19. Rfd1 Bxb2 20. Rab1 Bc3 21.
Rxb7 Kxb7 22. Qxd7 Nc6 23. Rxd6 {
Kondopoulos,D (2105)-Bitsanis,P/Foivitika 2005/EXT 2007/1-0 (40)}) 9. Qb3 Bb6
10. h3 Bxh3 11. gxh3 h6 12. Bxf7+ Qxf7 13. Qxf7+ Kxf7 14. Bh4 Nh5 15. Kh1 Nf4
16. Rg1 g5 17. Bg3 Nxd3 18. Rg2 Nxb2 19. Rag1 Raf8 20. Bh4 Rhg8 21. Bxg5 hxg5
22. Nxg5+ Ke7 23. Ndf3 Nd3 24. Rf1 Nxf2+ 25. Kh2 Be3 26. Re1 Bxg5 27. Nxg5 Nd3
28. Reg1 Nf4 29. Rg4 Ne6 30. Nxe6 Rxg4 31. Rxg4 Kxe6 32. h4 Rf4 33. Rg6+ Kf7
34. Rh6 Kg7 35. Rh5 Rxe4 36. Rg5+ Kh6 37. Kg3 Re3+ 38. Kg4 Ne7 39. Rh5+ Kg7 40.
Rg5+ Kf6 41. Kh5 Rxc3 42. Kh6 e4 43. Rg4 e3 44. Re4 d5 45. Rf4+ Nf5+ 46. Kh5 e2
47. Rg4 e1=Q 48. Rg6+ Kf7 49. Kg5 Qg3+ 50. Kxf5 Rf3# 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "3.5"]
[White "Gelemerov, Yane"]
[Black "Babatov, Martin"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "1926"]
[BlackElo "1737"]
[PlyCount "76"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Bg4 5. Bc4 e6 6. h3 Bxf3 7. Qxf3 Nf6 8.
Nxf6+ Qxf6 9. Qxf6 gxf6 10. d4 ({RR} 10. O-O Bg7 11. f4 f5 12. a4 Nd7 13. a5 a6
14. Rb1 Nf6 15. c3 h5 16. d3 O-O-O 17. Bd2 Nd5 18. Bb3 Bf8 19. Rf3 h4 20. Bd1
Bd6 21. Be2 Rhg8 22. b4 Rg6 23. c4 Nc7 24. Be1 Be7 {
Yanofsky,D (2460)-Reilly,B/Amsterdam 1954/EXT 2001/1/2 (42)}) 10... Bd6 11. O-O
Nd7 12. a4 $146 ({RR} 12. Be3 Rg8 13. Rfe1 O-O-O 14. Bd3 f5 15. Bd2 Rg7 16. Be2
Nf6 17. Bf3 Bc7 18. c3 c5 19. Re2 cxd4 20. cxd4 Nd5 21. Rc1 Kb8 22. Ree1 Bf4
23. Rc2 Rgg8 24. Rec1 Bxd2 25. Rxd2 Rd7 26. Rc5 Nf4 {
Dansker,G-Nur,N/Bratislava 1993/TD/0-1 (65)}) 12... Rg8 13. g3 O-O-O 14. Kh2 h5
15. h4 Rg4 16. Be3 Rxh4+ 17. Kg2 Rg4 18. Be2 Rg7 19. Rh1 f5 20. Bh6 Rh7 21.
Rxh5 Nf6 22. Rh4 Ne4 23. c3 Rg8 24. Bd3 Bxg3 25. fxg3 Rxg3+ 26. Kh2 Rxd3 27.
Rg1 Rd2+ 28. Rg2 Rxg2+ 29. Kxg2 Kd7 30. Rh3 Nf6 31. Bf4 Rxh3 32. Kxh3 Ne4 33.
Kh4 c5 34. Kh5 cxd4 35. cxd4 Kc6 36. Kh6 Kd5 37. Be3 Nd6 38. Kg7 Ne4 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "3.6"]
[White "Kolev, Nikola Vl."]
[Black "Mladenov, Andrey"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1909"]
[BlackElo "1558"]
[PlyCount "59"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. Nc3 ({RR} 6. d4 c5 7. Bd3
Qc7 8. c3 Ne4 9. O-O Nd6 10. Nbd2 Bf5 11. Qe2 Nd7 12. Rac1 Bxd3 13. Qxd3 b5 14.
Ne5 c4 15. Qc2 Nf6 16. Ba3 Nfe4 17. Bxd6 exd6 18. Nef3 Qc6 19. bxc4 bxc4 20.
Nxe4 dxe4 {Nothnagel,M (2249)-Levin,F (2482)/Germany 2010/EXT 2012/0-1 (53)}) (
{RR} 6. a4 c5 7. Be2 d4 8. Na3 Nd5 9. Nc4 Nc6 {
1/2 Hovsepyan,V (2092)-Stolz,M (2335)/Germany 2016/EXT 2017}) 6... Bg4 $146 ({
RR} 6... c5 7. Bd3 ({RR} 7. Ne2 Nc6 8. Ng3 d4 9. Bd3 ({RR} 9. Bb5 dxe3 10. dxe3
Qa5+ 11. c3 Qxb5 12. c4 Qa5+ 13. Nd2 Rd8 14. Qe2 Bg4 15. Qf2 Ne4 16. Ngxe4 Bxb2
17. Rd1 Bxd1 18. Kxd1 f5 19. Ng3 Rxd2+ 20. Qxd2 Rd8 21. Qxd8+ Qxd8+ 22. Kc2
Nb4+ 23. Kxb2 Qd2+ {
Macedo,R-Rezende,G (2016)/Altinopolis 2013/CBM 153 Extra/0-1}) 9... Nd5 10. O-O
dxe3 11. Bxg7 Kxg7 12. f5 e6 13. fxg6 hxg6 14. a3 e5 15. Be4 Bg4 16. h3 e2 17.
Qxe2 Nd4 18. Qc4 Be6 19. Nxd4 cxd4 20. Qe2 Nf4 21. Qf3 Rc8 {
Diano,D (2200)-Trois,F (2395)/Piriapolis 1977/MCD/0-1 (41)}) 7... Nc6 8. h3 d4
9. exd4 Nxd4 10. Nb5 Nxb5 11. Bxb5 Nh5 12. Bxg7 Kxg7 13. Qe2 Ng3 14. Qe5+ f6
15. Qxc5 Nxh1 16. g4 Ng3 17. Qe3 Qd6 18. Nh4 Qe6 19. Bd3 Qxe3+ 20. dxe3 f5 21.
O-O-O {Tsavari,H (1110)-Balaska,E (1378)/Porto Rio 2015/CBM 168 Extra/0-1 (57)}
) 7. h3 Bxf3 8. Qxf3 c6 9. g4 Ne4 10. O-O-O Nxc3 11. dxc3 Qa5 12. e4 dxe4 13.
Qxe4 e6 14. Qb4 Qxb4 15. cxb4 Bxb2+ 16. Kxb2 Na6 17. Bxa6 bxa6 18. Rd7 Rfd8 19.
Rhd1 Rxd7 20. Rxd7 Rb8 21. Kc3 Ra8 22. g5 Re8 23. Kd4 Ra8 24. c4 Kf8 25. Kc5
Ke8 26. Kxc6 Rb8 27. Rxa7 Rd8 28. Rxa6 Rd4 29. b5 Rxf4 30. b6 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "3.7"]
[White "Ginev, Nikola"]
[Black "Andreev, Dobrotich"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "1714"]
[BlackElo "1881"]
[PlyCount "63"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. d3 c6 5. O-O e6 6. Nh4 Bg6 7. Nd2 Be7 8. e4
O-O 9. Nxg6 hxg6 10. e5 Nfd7 11. Re1 c5 12. c4 $146 ({RR} 12. Qg4 Nc6 13. Nf3
Re8 14. h4 Qc7 15. Bf4 Nd4 16. Rac1 Nxf3+ 17. Bxf3 Qb6 18. Rb1 Nf8 19. h5 Rac8
20. h6 f5 21. exf6 gxf6 22. h7+ Kxh7 23. Kg2 Bd6 24. Rh1+ Kg7 25. Bh6+ Kf7 26.
Bxf8 Bxf8 {Colin,V (2402)-Bonnaud,R (2197)/Avoine 2013/CBM 155 Extra/1-0 (83)})
12... Nb6 13. Qe2 Nc6 14. Nf3 Qc7 15. h4 Rfd8 16. Bg5 Bxg5 17. hxg5 dxc4 18.
dxc4 Nd4 19. Nxd4 Rxd4 20. b3 Rad8 21. Bf3 Rd2 22. Qe3 Qe7 23. Re2 R2d3 24. Qf4
R8d4 25. Re4 Qd7 26. Kg2 Nc8 27. Qh4 Rxe4 28. Bxe4 Rd1 29. Rxd1 Qxd1 30. Bxb7
Ne7 31. Bf3 Nf5 32. Bxd1 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "3.8"]
[White "Georgiev, Nikolay Zh."]
[Black "Tsyntsarski, Boyko"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1572"]
[BlackElo "1672"]
[PlyCount "42"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nc3 d6 3. Bc4 Nf6 4. a3 ({RR} 4. f4 e6 5. Nf3 Be7 6. O-O O-O 7. Qe1
d5 8. exd5 exd5 9. Nxd5 Nxd5 10. Bxd5 Qxd5 11. Qxe7 Nc6 12. Qg5 Bf5 13. d3 f6
14. Qg3 c4 {1/2 Minzer,C (2380)-Quiroga,F (2380)/Villa del Parque 1998/EXT 2001
}) 4... e6 5. d3 Be7 6. Ba2 $146 ({RR} 6. Be3 a6 7. Nf3 O-O 8. Qd2 b5 9. Ba2
Bb7 10. h3 Nbd7 11. Rd1 Qc7 12. Bf4 Rac8 13. b3 b4 14. Nb1 Nh5 15. Bh2 bxa3 16.
Nxa3 Qc6 17. c4 d5 18. e5 g6 19. d4 cxd4 20. Nc2 dxc4 {Padron Hernandez,O
(1016)-Perez Garcia,J (1381)/Santa Cruz de Tenerife 2016/CBM 174 Extra/0-1 (38)
}) 6... O-O 7. Qf3 Nc6 8. Nge2 Ne5 9. Qg3 Kh8 10. Bd2 b5 11. f4 Nxe4 12. Nxe4
Bh4 13. fxe5 Bxg3+ 14. N2xg3 dxe5 15. Nxc5 Qd4 16. Bb4 a5 17. Nxe6 Bxe6 18.
Bxf8 Rxf8 19. Bxe6 fxe6 20. O-O-O b4 21. a4 b3 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.09"]
[Round "3.10"]
[White "Sapareva, Magdalena"]
[Black "Canadell Ruiz, Samuel Sandal"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1503"]
[BlackElo "1794"]
[PlyCount "42"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. b4 Nf6 2. Bb2 d6 3. e3 e5 4. Nf3 g6 5. a3 ({RR} 5. Be2 Bg7 6. d3 O-O 7. Nbd2
Re8 ({RR} 7... b6 8. O-O Bb7 9. Ne1 Qe7 10. a4 Nbd7 11. c4 c5 12. b5 Rfe8 13.
e4 Nf8 14. Nb3 a5 15. bxa6 Bxa6 16. Nc2 Ne6 17. Qd2 Qd7 18. Ra2 Bb7 19. Rfa1
Bc6 20. a5 b5 21. cxb5 Bxb5 22. Ne3 {
Lukovski,L (1932)-Rave,A (1824)/Jerusalem 2015/CBM 166/0-1 (66)}) 8. c4 Nbd7 9.
O-O h5 10. Qc2 c6 11. Rfe1 Qe7 12. a3 Nh7 13. h3 f5 14. e4 f4 15. d4 exd4 16.
Nxd4 Ng5 17. h4 Nf7 18. N4f3 Nde5 19. Rab1 b6 {
Saradjen,J (2216)-Tratar,M (2410)/Skofja Loka 2000/CBM 079 Extra/0-1 (40)})
5... Bg7 6. d3 $146 ({RR} 6. Bc4 O-O 7. O-O e4 8. Nd4 c5 9. Ne2 Qc7 10. Ba2
Nbd7 11. Nbc3 a6 12. Ng3 Re8 13. f3 exf3 14. Qxf3 Ne5 15. Qf4 Be6 16. Bxe6 Rxe6
17. bxc5 dxc5 18. d4 cxd4 19. exd4 Qb6 20. Na4 Qa7 {
Weigel,H (1996)-Becker,M (2135)/Hamburg 2005/CBM 108 Extra/1/2 (51)}) 6... Bd7
7. Be2 a5 8. c3 O-O 9. O-O Qe7 10. Nbd2 d5 11. bxa5 Rxa5 12. Nb3 Ba4 13. Nfd2
Nbd7 14. Qe1 Raa8 15. d4 e4 16. c4 c6 17. c5 Qe6 18. Rb1 Ng4 19. h3 Nh6 20. Bc3
f5 21. Nc1 Ra7 $17 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.1"]
[White "Krustev, Krasimir S."]
[Black "Petrov, Vladimir Ol."]
[Result "1/2-1/2"]
[ECO "C53"]
[WhiteElo "1970"]
[BlackElo "2028"]
[PlyCount "88"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 d6 8.
d5 Bxc3+ 9. bxc3 Ne7 10. Qd4 ({RR} 10. O-O O-O 11. Re1 Bg4 12. Bg5 Ng6 13. Qd4
Bxf3 14. gxf3 h6 15. Bd2 Nh5 16. Kh1 Qh4 17. Rg1 Qh3 18. Be2 Ne5 19. Bxh6 f6
20. Qe3 Kf7 21. f4 Qh4 22. fxe5 gxh6 23. Rg4 Ng3+ 24. fxg3 {
1-0 Insa Alfonso,P (2196)-Morato Tent,F (2041)/Mislata 2016/CBM 173 Extra})
10... O-O 11. O-O ({RR} 11. Bg5 Nd7 12. Bxe7 Qxe7 13. O-O f6 14. Rae1 a6 15.
Bb3 Kh8 16. Nd2 Nc5 17. f4 Bd7 18. Bc2 Rae8 19. h3 c6 20. c4 cxd5 21. cxd5 Bb5
22. Rf3 Qc7 23. Bb1 Na4 24. Rfe3 Qb6 25. Nf3 Qxd4 {
Nordenbaek,J (2252)-Glud,J (2496)/Denmark 2011/EXT 2013/1/2}) 11... Ng6 12. Bg5
a6 $146 ({RR} 12... Re8 13. Bb5 Bd7 14. Bxf6 gxf6 15. Rab1 c6 16. Bd3 c5 17.
Qe3 b6 18. Rfe1 Qe7 19. Bb5 Kg7 20. a4 Rad8 21. Nd2 Rg8 22. Nf1 Bc8 23. Ng3 Qe5
24. Rf1 Nf4 25. Qxf4 Qxc3 26. Rfc1 Qe5 27. Rb3 {
Novikov,M (2430)-Kazakov,N/Tula 2002/EXT 2010/1-0 (37)}) 13. a4 Re8 14. Bxf6
Qxf6 15. Qxf6 gxf6 16. Rfe1 Ne5 17. Nxe5 fxe5 18. Rab1 b6 19. Bd3 a5 20. Bb5
Re7 21. Re3 f5 22. exf5 Bxf5 23. Rbe1 Rf7 24. Rg3+ Kh8 25. Ree3 Raf8 26. Rgf3
Bc2 27. Rxf7 Rxf7 28. g3 Kg7 29. Kf1 Bb3 30. c4 Bd1 31. Kg2 Kh6 32. f3 Kg5 33.
Rd3 Be2 34. h4+ Kh6 35. Re3 Bd1 36. Rd3 Be2 37. Re3 Bd1 38. Rd3 Bc2 39. Rc3 Bb1
40. Rb3 Bf5 41. Re3 Kg7 42. g4 Bc8 43. Kg3 Rf4 44. Re4 Rxe4 1/2-1/2

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.2"]
[White "Hristov, Hristo M."]
[Black "Vaklinov, Vasil"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2138"]
[BlackElo "2099"]
[PlyCount "42"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. d4 Na6 3. c3 Nc7 4. Bd3 g6 5. f4 d5 6. e5 h5 7. Qc2 $146 ({RR} 7.
Nf3 Nh6 ({RR} 7... Bg4 8. Be3 Nh6 9. Nbd2 Nf5 10. Bf2 Ne6 11. h3 Nxf4 12. Bf1
Bxf3 13. Qxf3 Ne6 14. g4 Nfg7 15. Be3 Qd7 16. Bd3 hxg4 17. hxg4 Rxh1+ 18. Qxh1
g5 19. Qf3 Nf4 20. Bxf4 gxf4 21. Qxf4 O-O-O 22. O-O-O {
Dimitrijevic,A (2115)-Saric,N (2097)/Herceg Novi 2001/CBM 081 Extra/1-0 (67)})
8. Nh4 Nf5 9. Nxf5 Bxf5 10. Be3 Bxd3 11. Qxd3 e6 12. O-O Be7 13. Nd2 Kf8 14. g3
Ne8 15. h3 Ng7 16. Kg2 Qb6 17. b3 a5 18. g4 Qa6 19. c4 Bb4 20. Nf3 a4 21. a3
Be7 {Zapfl,H (2045)-Zimmermann,R (1965)/Hockenheim 1994/EXT 2003/1-0 (44)})
7... Bg7 8. Nf3 Nh6 9. Nh4 e6 10. g3 Nf5 11. Nxf5 exf5 12. h4 Bf8 13. Be3 Be7
14. Nd2 Be6 15. Nf3 Kf8 16. O-O Kg7 17. Rfd1 b5 18. b3 Qd7 19. a4 a6 20. axb5
axb5 21. b4 Rhb8 1/2-1/2

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.4"]
[White "Babatov, Martin"]
[Black "Kolev, Nikola Vl."]
[Result "0-1"]
[ECO "A81"]
[WhiteElo "1737"]
[BlackElo "1909"]
[PlyCount "55"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 f5 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Bg5 ({RR} 6. b3 Be7 7. Ba3
O-O 8. Bxe7 Qxe7 9. Nfd2 Ne4 10. e3 Nxd2 11. Nxd2 Bxg2 12. Kxg2 d6 13. Qf3 Nd7
14. Qc6 Nf6 15. c4 {1/2 Binder,T (2255)-Horvath,J (2186)/Hungary 2014/EXT 2016}
) 6... h6 7. Bxf6 Qxf6 8. c4 $146 ({RR} 8. e3 g6 9. c4 d6 10. Nc3 Bg7 11. Nb5
Kd8 12. Rc1 a6 13. Nc3 Nd7 14. b4 Ke7 15. Re1 Rhd8 16. e4 Kf8 17. d5 e5 18.
exf5 gxf5 19. Nh4 a5 20. a3 axb4 21. axb4 e4 22. Ne2 Ne5 {
Sournin,V-Whitaker,N/St. Louis,MO 1929/EXT 2017/1/2 (51)}) 8... Nc6 9. Nc3
O-O-O 10. a3 g5 11. b4 g4 12. Ne5 Nxe5 13. Bxb7+ Kxb7 14. dxe5 Qxe5 15. Qb3 Bg7
16. Rfc1 h5 17. a4 h4 18. a5 hxg3 19. hxg3 f4 20. axb6 axb6 21. Nb5 Qe4 22.
Ra7+ Kb8 23. f3 Bd4+ 24. Nxd4 Qxd4+ 25. e3 fxe3 26. Rca1 e2+ 27. Kg2 e1=N+ 28.
Rxe1 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.5"]
[White "Timev, Anzhelo"]
[Black "Ginev, Nikola"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "1805"]
[BlackElo "1714"]
[PlyCount "113"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 Nf6 2. c4 d6 3. d4 g6 4. Nc3 Bg7 5. e3 O-O 6. Be2 Nbd7 7. O-O e5 8. d5
a5 9. e4 ({RR} 9. Bd2 e4 10. Nd4 Re8 11. a3 h5 12. b4 Nf8 13. bxa5 h4 14. Rb1
h3 15. g3 N8h7 16. Na2 Nd7 17. f4 exf3 18. Nxf3 Nc5 19. Nd4 Ne4 20. Be1 Bh6 21.
Nc2 Nef6 22. Rb3 Qe7 23. Qd4 Bf5 {
Kelly,L (2173)-David,A (2406)/Arad 2016/CBM 173 Extra/0-1 (36)}) ({RR} 9. a3
Nc5 10. Nd2 Nfd7 11. e4 f5 12. f3 f4 13. b3 Nf6 14. Bb2 g5 15. b4 Na6 16. Na2
h5 17. Nc1 g4 18. Nd3 Qe7 19. c5 gxf3 20. Bxf3 Ng4 21. cxd6 cxd6 22. Re1 Qg5
23. Nc4 Qg6 {
Remenyik,D (1594)-Rosol,A (1779)/Mureck 2016/CBM 174 Extra/0-1 (34)}) 9... Nc5
10. Qc2 Nh5 11. Ng5 $146 ({RR} 11. Be3 f5 ({RR} 11... Nf4 12. Bxc5 dxc5 13.
Rad1 f5 14. Bd3 Qe7 15. Rfe1 Bd7 16. Qd2 Nxd3 17. Qxd3 Qd6 18. Nb5 Bxb5 19.
cxb5 fxe4 20. Rxe4 Rf5 21. Nd2 Qf6 22. f3 Bf8 23. Nc4 Bd6 24. b6 Qf7 25. Qc3
Qg7 26. Rde1 {Ferry,R-Chaude de Silans,C/Paris 1963/EXT 2009/1-0 (62)}) 12.
Bxc5 dxc5 13. Bd3 Nf4 14. Ne2 Nxe2+ 15. Qxe2 f4 16. Qc2 Bg4 17. Be2 g5 18. Qb3
b6 19. Rad1 h5 20. Rd2 Bxf3 21. gxf3 g4 22. fxg4 hxg4 23. Bxg4 f3 24. Rd3 Qg5
25. h3 Rf4 {
Liska,J (1985)-Czarniecka,A (1411)/Liberec 2015/CBM 164 Extra/0-1 (42)}) ({RR} 
11. Ne1 Nf4 12. Bxf4 exf4 13. Nd3 Nxd3 14. Qxd3 f5 15. Bf3 g5 16. exf5 Bxf5 17.
Be4 Bxe4 18. Nxe4 b6 19. Qe2 Re8 20. Rae1 Qd7 21. b3 Qf5 22. Qd3 Kh8 23. c5 Re5
24. cxb6 Rxd5 25. Qc4 cxb6 {
Nielsen,R-Thomsen,H/Copenhagen 2000/CBM 077 Extra/1-0 (33)}) 11... Nf4 12. Bxf4
exf4 13. Nf3 f5 14. exf5 Bxf5 15. Qd2 g5 16. Nd4 Bd7 17. f3 Re8 18. Rfe1 c6 19.
Kh1 Qf6 20. Rad1 Qg6 21. Nb3 Nxb3 22. axb3 c5 23. Bd3 Bf5 24. Rxe8+ Rxe8 25.
Bxf5 Qxf5 26. Ne4 Be5 27. Qxa5 Rf8 28. Qc7 Qg6 29. Qd7 h6 30. Ra1 Rf7 31. Ra8+
Kh7 32. Qe8 h5 33. Qe6 Kh6 34. Rg8 Bg7 35. Qxg6+ Kxg6 36. Nxd6 Re7 37. Ne4 b6
38. Rb8 Bd4 39. h3 Ra7 40. Rxb6+ Kf5 41. g4+ fxg3 42. Nxg3+ Kf4 43. Ne2+ Kxf3
44. Nxd4+ cxd4 45. Rf6+ Kg3 46. Rf1 g4 47. hxg4 hxg4 48. Rd1 Kh3 49. Kg1 g3 50.
d6 Ra2 51. d7 Rxb2 52. d8=Q Rg2+ 53. Kf1 Rf2+ 54. Ke1 Kh2 55. Rd2 Kg2 56. Qxd4
Kf3 57. Rxf2+ 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.6"]
[White "Tsyntsarski, Boyko"]
[Black "Doykov, Stoycho"]
[Result "0-1"]
[ECO "E33"]
[WhiteElo "1672"]
[PlyCount "68"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 d5 5. Qb3 Nc6 6. Nf3 O-O 7. a3 Bxc3+ 8.
Qxc3 dxc4 ({RR} 8... Re8 9. Bd3 Qe7 10. b4 e5 11. Nxe5 Nxe5 12. dxe5 Ne4 13.
Qd4 c5 14. Qxd5 Nxf2 15. Kxf2 Rd8 16. Qxc5 Qxc5 17. bxc5 Rxd3 18. Rb1 Kf8 19.
Rb4 a5 20. Rb6 Rc3 21. Bb2 Rc2+ 22. Kg3 Bd7 23. Rc1 {
Ivanchuk,V (2744)-Sadorra,J (2590)/Tromsoe 2014/CBM 162/1/2 (55)}) ({RR} 8...
Ne4 9. Qc2 e5 10. cxd5 Qxd5 11. Bc4 Qa5+ 12. Bd2 Nxd2 13. Qxd2 Qxd2+ 14. Kxd2
exd4 15. Nxd4 Ne5 16. Be2 c5 17. Nc2 Be6 18. Kc3 Rac8 19. Rhd1 Rfd8 20. h3 Kf8
21. f4 Nc6 22. e4 f6 23. Rxd8+ {
Ostojic,N (2434)-Kostic,N (2139)/Kragujevac 2016/EXT 2017/1/2}) 9. Bxc4 Nd5
$146 ({RR} 9... Qd6 10. O-O b6 11. b4 Bb7 12. Bb2 Ne7 13. Be2 Ng4 14. g3 Qd5
15. h3 Nf6 16. Kh2 Ne4 17. Qc4 Nd2 18. Qxd5 Nxf1+ 19. Rxf1 Nxd5 20. Rc1 Rfc8
21. Nd2 Nf6 22. f3 a5 23. e4 axb4 24. axb4 {
Carlsson,H-Carlsson,S/Stockholm 1938/EXT 1998/1-0 (35)}) 10. Qc2 h6 11. O-O
Nce7 12. e4 Nf6 13. Rd1 c6 14. Ne5 b5 15. Ba2 Bb7 16. Bd2 a5 17. Bc3 Qc7 18. b4
a4 19. Rac1 Rad8 20. f3 Nd7 21. Nxd7 Rxd7 22. Qb2 Qb6 23. Kh1 Rfd8 24. d5 cxd5
25. Bd4 Qd6 26. Bxg7 Qf4 27. exd5 Bxd5 28. Bxd5 Rxd5 29. Rxd5 Nxd5 30. Re1 f6
31. Re4 Qg5 32. Rg4 Ne3 33. h4 Rd1+ 34. Kh2 Nxg4+ 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.7"]
[White "Gelemerov, Yane"]
[Black "Canadell Ruiz, Samuel Sandal"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1926"]
[BlackElo "1794"]
[PlyCount "71"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ c6 4. dxc6 Nxc6 5. Nf3 ({RR} 5. Nc3 Qb6 6. Nge2
Bd7 7. d4 O-O-O 8. O-O e6 9. a4 Bb4 10. Na2 Be7 11. c4 a6 12. c5 Qa7 13. Bd3
Nd5 14. Bd2 g5 15. Nac3 Ncb4 16. Nxd5 Nxd5 17. b4 Qb8 18. b5 axb5 19. axb5 e5 {
Matovic,M (2188)-Trajkovic,N (1543)/Stari Banovci 2016/CBM 173 Extra/1-0}) 5...
Bg4 6. O-O ({RR} 6. h3 Bh5 7. Nc3 Qc7 8. g4 Bg6 9. Qe2 O-O-O 10. d3 e6 11. Bd2
h5 12. g5 Nd7 13. O-O-O h4 14. Bxc6 bxc6 15. Rde1 Kb7 16. Ne5 Nxe5 17. Qxe5 Bd6
18. Qxg7 Ka8 19. Qd4 Rb8 20. Kb1 c5 {
Papa,S (2349)-Filipovic,B (2432)/Switzerland 2003/EXT 2004/1-0 (44)}) 6... e6
7. c3 $146 ({RR} 7. d3 Bc5 8. Bg5 O-O 9. Nc3 Nd4 10. Bc4 Nxf3+ 11. gxf3 Bh3 12.
Re1 Qb6 13. Qd2 Qc6 14. Ne4 Nxe4 15. dxe4 f6 16. Bf4 Bxf2+ 17. Qxf2 Qxc4 18.
Qg3 e5 19. Bh6 Qf7 20. Qxh3 Qg6+ 21. Kf2 Qxh6 {
Giroyan,G (1300)-Gelin,B (1610)/France 2004/EXT 2005/1-0}) 7... Qc7 8. d4 Bd6
9. h3 Bh5 10. Nbd2 Bf4 11. Be2 g5 12. Nc4 O-O-O 13. Nxg5 Rhg8 14. h4 h6 15. Nh3
Bh2+ 16. Kh1 Bg4 17. Bxg4 Rxg4 18. Qf3 Rdg8 19. Ne3 Rxh4 20. Qxf6 Rh5 21. Qf3
Rh4 22. Re1 Bd6 23. Nc4 Bg3 24. Bd2 Ne7 25. Ne5 Nf5 26. Re4 Rxe4 27. Qxe4 Bxf2
28. Bf4 Bg3 29. Rf1 Qe7 30. Kg1 Qh4 31. Nxf7 Re8 32. Qe5 Bxf4 33. Qxf4 Qh5 34.
Nd6+ Nxd6 35. Qxd6 Qe2 36. Rf7 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.8"]
[White "Andreev, Dobrotich"]
[Black "Georgiev, Nikolay Zh."]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "1881"]
[BlackElo "1572"]
[PlyCount "49"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Qf6 6. d4 exd4 7. Qxd4 Qxd4
8. Nxd4 Bb4 9. Bd2 Nf6 10. f3 Ke7 11. O-O-O Be6 $146 ({RR} 11... h6 12. Rhe1
Rd8 13. Nd5+ cxd5 14. Bxb4+ Kd7 15. exd5 Re8 16. Rxe8 Nxe8 17. Re1 Nd6 18. b3
a5 19. Ba3 a4 20. Kb2 axb3 21. axb3 Ra6 22. c4 Kd8 23. Bxd6 Rxd6 24. Kc3 Bd7
25. Ra1 c6 26. dxc6 {
Acs,G (2212)-Benyei,A (1949)/Hungary 2004/EXT 2009/1-0 (34)}) 12. a3 Bc5 13.
Be3 Bb6 14. Na4 Ba7 15. Nf5+ Bxf5 16. Bxa7 Rxa7 17. exf5 Re8 18. Nc5 b6 19.
Rhe1+ Kf8 20. Ne4 Nd5 21. c4 Ne7 22. f6 Ng6 23. Ng3 Rxe1 24. Rxe1 Nf4 {
Äèàãðàììà #} 25. Re8+ $3 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.10"]
[White "Doychev, Ivan"]
[Black "Stoyanov, Plamen"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "1188"]
[BlackElo "1470"]
[PlyCount "31"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nf3 Nc6 6. Nc3 g6 7. Bf4 ({RR} 7.
cxd5) 7... a6 8. Ne5 $146 ({RR} 8. Be2 Bg7 9. a3 O-O 10. O-O dxc4 11. Bxc4 b5
12. Ba2 Bg4 13. d5 Bxf3 14. Qxf3 Nd4 15. Qd3 Nh5 16. Be3 Nf5 17. Bc5 Rc8 18.
Be3 Nd6 19. Rac1 Qd7 20. Rfe1 Nc4 21. Re2 Ne5 22. Qe4 f5 {
Bielby,P (1899)-Round,M (1982)/Wetherby 2016/CBM 170 Extra/1/2 (35)}) ({RR} 8.
c5 Nh5 ({RR} 8... Bg7 9. h3 Nh5 10. Bh2 O-O 11. Be2 Nf6 12. Ne5 Nd7 13. Nxc6
bxc6 14. O-O e5 15. dxe5 Nxe5 16. Qa4 Bb7 17. Rfe1 Re8 18. Rad1 f5 19. Bf1 Qf6
20. Qb3 Qf7 21. Na4 Rab8 22. Bf4 h6 23. Qg3 {
Pedruzzi,P (1949)-Santa Isabel,M (1660)/Curitiba 2015/CBM 170 Extra/1-0 (38)})
9. Be3 Bg7 10. Na4 O-O 11. Nb6 Rb8 12. Be2 f5 13. Ng5 f4 14. Bd2 e5 15. h4 Nxd4
16. Bxh5 gxh5 17. Rc1 Bg4 18. f3 Bf5 19. O-O h6 20. Nh3 Qxh4 21. Nxd5 Qd8 22.
Nb6 Bf6 {Muranyi,J (1741)-Tarsi,M (1963)/Eger 2008/EXT 2011/1/2}) 8... Bg7 9.
cxd5 Nxd5 10. Nxd5 Bxe5 11. dxe5 Qa5+ 12. Qd2 Qxd2+ 13. Kxd2 O-O 14. Bc4 b5 15.
Bb3 Rd8 16. Ke3 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "4.11"]
[White "Ivanov, Oleg M."]
[Black "Sapareva, Magdalena"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1548"]
[BlackElo "1503"]
[PlyCount "60"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 d5 2. d4 e6 3. g3 h6 4. Bg2 Nf6 5. O-O c5 6. c4 Nc6 7. cxd5 Nxd5 8. e4
$146 ({RR} 8. dxc5 Bxc5 9. e4 Nde7 10. Qc2 Bb6 11. Bf4 Bd7 12. Nc3 Rc8 13. Rfd1
Bc7 14. Bxc7 Rxc7 15. Nb5 O-O 16. Nxc7 Qxc7 17. Rac1 Qc8 18. Nd4 Qb8 19. Nxc6
Bxc6 20. Qc5 Ng6 21. Qd6 Qe8 22. b3 f5 {
Gonzalez Parejo,R-Penate,E/Albania 2010/CBM 138 Extra/1-0}) 8... Nb6 9. Be3
cxd4 10. Nxd4 Be7 11. Nc3 O-O 12. Rc1 Nc4 13. Nxc6 bxc6 14. Qe2 Nxe3 15. Qxe3
Qb6 16. Qd2 Bg5 17. Qc2 Bxc1 18. Rxc1 Bb7 19. Na4 Qd4 20. Rd1 Qb4 21. a3 Qb5
22. Bf1 Qa5 23. b4 Qg5 24. Nc5 Bc8 25. Qd3 a5 26. Qd6 axb4 27. axb4 Ra7 28.
Qxc6 Rd8 29. Rb1 Qe7 30. b5 Rc7 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "5.2"]
[White "Vaklinov, Vasil"]
[Black "Krustev, Krasimir S."]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2099"]
[BlackElo "1970"]
[PlyCount "133"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. c4 Nf6 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. e3 O-O 6. Nge2 c6 7. O-O e5 8. d3 a5
9. a3 Nbd7 10. Rb1 Qe7 11. b4 axb4 12. axb4 Nb6 13. b5 c5 14. Qb3 Be6 15. h3 e4
16. Nxe4 Nxe4 17. Bxe4 Bxc4 18. Qc2 Ba2 19. Rb2 Bxb2 20. Bxb2 Be6 21. Nf4 d5
22. Bg2 Ra2 23. Qc1 Rxb2 24. Qxb2 Ra8 25. Qe5 Qd7 26. Rc1 Re8 27. h4 Bf5 28.
Qf6 Qxb5 29. Nh5 gxh5 30. Qxf5 Re6 31. Bxd5 Nxd5 32. Qxd5 b6 33. Ra1 Re8 34.
Ra7 Rf8 35. Rb7 Qa6 36. Kg2 Qa8 37. Kh2 Qd8 38. Qf5 Qd6 39. Qxh5 Qf6 40. Qg4+
Kh8 41. Kg2 Qd6 42. Qe4 f5 43. Qe7 Qxe7 44. Rxe7 Rd8 45. Rb7 Rxd3 46. Rxb6 Kg7
47. Rc6 Rc3 48. Kf1 Rc2 49. Ke1 c4 50. e4 fxe4 51. Re6 c3 52. Rxe4 Rc1+ 53. Ke2
Rc2+ 54. Ke3 Rc1 55. Rf4 Rd1 56. Rc4 Rc1 57. Kd3 Rf1 58. Rg4+ Kh6 59. Rf4 Rc1
60. Rc4 Rf1 61. Ke3 Re1+ 62. Kf3 Rc1 63. Kg4 c2 64. Kf5 Kh5 65. Rc7 h6 66. Rc6
Rf1 67. g4+ 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "5.3"]
[White "Kolev, Nikola Vl."]
[Black "Timev, Anzhelo"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1909"]
[BlackElo "1805"]
[PlyCount "83"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. b3 c6 7. Bb2 Nbd7 8. Nc3
Bd6 9. O-O-O Qc7 10. g4 Nc5 11. g5 Nfd7 12. d4 Na6 13. Bxa6 bxa6 14. Rhf1 Qa5
15. e4 O-O-O 16. f5 Be7 17. h4 Bb4 18. Kb1 Rde8 19. fxe6 fxe6 20. Ne2 Qd8 21.
Qd3 Kb7 22. Rf7 Re7 23. Rdf1 Rxf7 24. Rxf7 Rg8 25. e5 Qe8 26. Rf1 g6 27. c3 Be7
28. Nf4 Bd8 29. Ba3 Rg7 30. Qh3 Rf7 31. Kc2 Rf5 32. Nd3 Qf7 33. Rxf5 gxf5 34.
Nf4 Be7 35. Bxe7 Qxe7 36. Qg3 Nf8 37. h5 Qg7 38. g6 h6 39. Qh4 Qd7 40. Qf6 Qe8
41. g7 Nd7 42. Qxe6 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "5.4"]
[White "Metev, Martin"]
[Black "Hristov, Hristo M."]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "1965"]
[BlackElo "2138"]
[PlyCount "116"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 e6 7. Bd3 a6 8.
O-O Qc7 9. a4 b6 10. f4 d6 11. Qe1 Be7 12. Qg3 O-O 13. f5 Kh8 14. Bg5 Nh5 15.
Qh4 Bxg5 16. Qxg5 Nf6 17. fxe6 fxe6 18. Rf4 Ne5 19. Raf1 Bb7 20. Kh1 Qe7 21.
Nd4 h6 22. Qg3 g5 23. R4f2 Nfg4 24. Rxf8+ Rxf8 25. Rxf8+ Qxf8 26. Nf3 Qf6 27.
h3 Nxf3 28. Qxf3 Qxf3 29. gxf3 Ne5 30. Kg2 Kg7 31. Kg3 Ng6 32. Ne2 e5 33. Nc3
Nf4 34. Nd1 Bc8 35. Bf1 a5 36. Ne3 Kf6 37. c3 Be6 38. b4 d5 39. exd5 Nxd5 40.
Nxd5+ Bxd5 41. c4 Bb7 42. c5 axb4 43. cxb6 b3 44. Bd3 h5 45. a5 b2 46. Kf2 Ke7
47. Ke3 Kd6 48. Kd2 Bxf3 49. a6 Kc6 50. b7 Kc7 51. Kc2 g4 52. hxg4 hxg4 53.
Kxb2 g3 54. Bf1 Kb8 55. Kc2 Be2 56. Bh3 Bxa6 57. Kd2 Bxb7 58. Ke3 Kc7 {Kd4} 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "5.5"]
[White "Doykov, Stoycho"]
[Black "Gelemerov, Yane"]
[Result "0-1"]
[ECO "E21"]
[BlackElo "1926"]
[PlyCount "66"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 O-O 5. Nf3 d6 6. a3 Bxc3 7. Bxc3 Ne4 8.
Qc2 f5 9. e3 Nd7 10. Bd3 Ndf6 11. O-O Qe8 12. Nd2 Nxc3 13. Qxc3 e5 14. d5 Qh5
15. e4 f4 16. Bc2 g5 17. Bd1 g4 18. h3 Qg6 19. hxg4 Nxg4 20. Bxg4 Bxg4 21. f3
Bh3 22. Rf2 Rf7 23. Kf1 Rg7 24. Ke2 Bd7 25. Rg1 c6 26. b4 a5 27. bxa5 cxd5 28.
exd5 Bf5 29. Kd1 h5 30. Nf1 h4 31. Rb2 Rc7 32. Qb4 Rac8 33. Rd2 Bd3 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "5.6"]
[White "Mladenov, Andrey"]
[Black "Andreev, Dobrotich"]
[Result "0-1"]
[ECO "D40"]
[WhiteElo "1558"]
[BlackElo "1881"]
[PlyCount "48"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Bd3 dxc4 8.
Bxc4 Nc6 9. O-O O-O 10. Bg5 Be7 11. Re1 Nd5 ({RR} 11... Bd7 12. a3 Rc8 13. Qd3
Nd5 14. Bxe7 Ndxe7 15. Rad1 Ng6 16. Ba2 Nce7 17. d5 exd5 18. Nxd5 Nxd5 19. Bxd5
Qf6 20. Bxb7 Rc7 21. Be4 Qxb2 22. Qd6 Qb6 23. Qg3 Bc8 24. Rd6 Qa5 25. Rd5 Rc5
26. Rxc5 {Tal,M (2580)-Ljubojevic,L (2600)/Manila 1990/CBM 019/0-1 (55)}) ({RR
} 11... h6 12. Bh4 a6 13. a3 b5 14. Bb3 Bb7 15. Qd3 g6 16. Bxe6 Kg7 17. Ba2 Qd6
18. Rad1 Nh5 19. d5 Bxh4 20. dxc6 Bxf2+ 21. Kxf2 Qxc6 22. Bd5 Qc5+ 23. Qd4+
Qxd4+ 24. Rxd4 Bxd5 25. Nxd5 Rad8 26. Re7 {
Hernandez,A (1971)-Langer,H (1813)/Amsterdam 2015/EXT 2016/1-0}) 12. Bxe7 Ncxe7
13. Ne4 b6 $146 ({RR} 13... Nc6 14. Rc1 a6 15. Bd3 Nf6 16. Nc5 Nb4 17. Bb1 b6
18. Nb3 Bb7 19. Re5 Rc8 20. Rxc8 Qxc8 21. Ne1 h6 22. Re3 Ba8 23. Rg3 Be4 24.
Bxe4 Nxe4 25. Re3 Nf6 26. Rc3 Qb7 27. Rc4 Nbd5 28. Qc1 {
Scheide,H (1913)-Sube,G (1787)/Lindow/Mark 2004/EXT 2006/1/2 (49)}) 14. h4 Bb7
15. a3 Nf5 16. h5 Nf6 17. Nxf6+ Qxf6 18. d5 Bxd5 19. Bxd5 Rad8 20. Qa4 Rxd5 21.
Qxa7 Nh4 22. Nxh4 Qxh4 23. Qxb6 Rxh5 24. Qb7 $4 (24. f3 $142 $17) 24... Qh1#
0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "5.7"]
[White "Ginev, Nikola"]
[Black "Doychev, Ivan"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "1714"]
[BlackElo "1188"]
[PlyCount "47"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. d3 Nc6 5. O-O e5 6. Nbd2 Bd6 7. e4 d4 8. Nc4
Bc7 9. a4 Be6 ({RR} 9... a6 10. Bd2 Rb8 11. Qe1 O-O 12. a5 Be6 13. b3 Ne8 14.
Nh4 Nd6 15. f4 Nxc4 16. bxc4 exf4 17. gxf4 f6 18. e5 f5 19. Nf3 h6 20. Kh1 Ne7
21. Rg1 Bd7 22. Qg3 g6 23. Qh3 Kg7 24. Be1 {
Valdes Romero,L (2406)-Ynojosa Aponte,F (2448)/Tromsoe 2014/CBM 162/1-0 (65)})
10. b3 Bxc4 ({RR} 10... O-O 11. Bg5 h6 12. Bd2 b6 13. Qc1 Kh7 14. Nh4 Qd7 15.
f4 Qe7 16. fxe5 Nxe5 17. Nxe5 Bxe5 18. Nf5 Bxf5 19. Rxf5 Rac8 20. Qd1 g6 21.
Rf3 a6 22. Qc1 Ng8 23. Bh3 Rc6 24. Qf1 Rf6 25. Qf2 {
Jovancev,O (1709)-Damjanovic,V (1444)/Belgrade 2016/CBM 171 Extra/1-0 (47)})
11. bxc4 O-O 12. Nh4 $146 ({RR} 12. Bh3 h6 13. Nh4 Ne7 14. Kh1 Qe8 15. Qf3 Qc6
16. Bd2 a6 17. Nf5 Nxf5 18. Qxf5 g6 19. Qf3 Kg7 20. Qg2 b5 21. axb5 axb5 22.
cxb5 Qxb5 23. Rxa8 Rxa8 24. Qf3 Qc6 25. Bg2 Ra2 26. Rc1 Bd8 {
Raguz,D (2177)-Klement,D (1933)/Zagreb 2010/EXT 2012/1/2 (32)}) 12... Ba5 13.
Bd2 Bxd2 14. Qxd2 Qd7 15. Nf5 h6 16. f4 Kh7 17. fxe5 Nxe5 {Äèàãðàììà #} 18.
Nxh6 $1 Qd8 19. Nf5 Neg4 20. Qg5 Rg8 21. Bh3 Ne5 22. Qh4+ Kg6 23. Ne7+ Qxe7 24.
Bf5# 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "5.8"]
[White "Tsyntsarski, Boyko"]
[Black "Babatov, Martin"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1672"]
[BlackElo "1737"]
[PlyCount "51"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Be2 g6 6. Nh3 Bxh3 7. Rxh3 e6 8. Bg5
Qb6 9. Rb3 Qc7 10. Nc3 Nd7 11. g4 $146 ({RR} 11. Qd2 a6 12. O-O-O c5 13. Bf4
cxd4 14. Nxd5 Qc6 15. Nb4 Bxb4 16. Rxb4 Rd8 17. Bf3 Qc5 18. Rxd4 Qc7 19. Bg5
Ne7 20. Qb4 Nf5 21. Bxd8 Qxd8 22. Rxd7 {
1-0 Vladimirova,M (1973)-Noeva,G/Ruse 2007/CBM 117 Extra}) 11... hxg4 12. Bxg4
Be7 13. Qf3 Bxg5 14. hxg5 O-O-O 15. O-O-O Rh7 16. Nb5 cxb5 17. Rc3 Ne7 18.
Rxc7+ Kxc7 19. Qa3 Nc6 20. Qd6+ Kc8 21. Bxe6 fxe6 22. Qxe6 Ne7 23. Rd3 Rf8 24.
Rc3+ Kd8 25. b4 Rfh8 26. Qd6 1-0

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "5.9"]
[White "Canadell Ruiz, Samuel Sandal"]
[Black "Georgiev, Nikolay Zh."]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1794"]
[BlackElo "1572"]
[PlyCount "116"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. e4 dxe4 3. f3 Nf6 ({RR} 3... e5 4. fxe4 Qh4+ 5. Kd2 Nf6 6. dxe5
Nxe4+ 7. Kd3 Nf2+ 8. Ke2 Nxd1 9. Kxd1 Nc6 10. Nc3 Bg4+ 11. Kd2 Qf2+ 12. Nce2
Bc8 {0-1 Mondoloni,A-Mchedlishvili,M (2631)/Ajaccio 2007/CBM 120 Extra}) 4. Be3
$146 ({RR} 4. Bg5 h6 ({RR} 4... Nc6 5. Bb5 Qd5 6. Bxc6+ Qxc6 7. Nc3 Bf5 8. d5
Qb6 9. Bxf6 exf6 10. fxe4 Qxb2 11. Nge2 Bb4 12. O-O Bxc3 13. Rb1 Qa3 14. Rxf5
Be5 15. Rxb7 Qe3+ 16. Rf2 Qxe4 17. Rb3 O-O 18. Ng3 Qh4 19. Qb1 {
Kocab,J (2114)-Donnert,M (2144)/Czechia 2012/EXT 2016/0-1}) 5. Bxf6 exf6 6.
fxe4 Bd6 7. Nf3 Bg4 8. Be2 O-O 9. O-O Re8 10. Nbd2 Bf4 11. c3 c6 12. Nh4 Bxe2
13. Qxe2 Qc7 14. Nhf3 Nd7 15. g3 Bxd2 16. Nxd2 Re6 17. Rae1 Rae8 18. Qf3 Qb6 {
Pota,L (1654)-Demeter,A (1734)/Hungary 2016/EXT 2017/0-1 (60)}) ({RR} 4. fxe4
Nxe4 5. Bd3 Nf6 6. Nf3 Bg4 7. c3 e6 8. Bg5 Bxf3 9. Qxf3 Qd5 10. Qxd5 Nxd5 11.
O-O Be7 12. Bd2 O-O 13. Na3 Nd7 14. Nc4 c5 15. Na5 cxd4 16. cxd4 Bf6 17. Nb3
Rac8 18. g4 h6 {
Mueller,U (2011)-Duncker,J (2251)/Germany 2013/EXT 2015/0-1 (52)}) 4... b6 5.
Nd2 Bb7 6. Bb5+ Nbd7 7. fxe4 Nxe4 8. Ngf3 a6 9. Bd3 Nxd2 10. Bxd2 e6 11. c3 Bd6
12. Bg5 Nf6 13. Qe2 h6 14. Bd2 Nh5 15. Qf2 Nf4 16. Bc2 Qf6 17. Rf1 O-O 18.
O-O-O Ng6 19. Rde1 Rae8 20. Be3 Bf4 21. Kb1 Bxe3 22. Qxe3 Nh4 23. Re2 Nxf3 24.
gxf3 Qg5 25. f4 Qd8 26. Rg1 Kh8 27. Qe5 Rg8 28. Re3 Qd6 29. Qh5 Ref8 30. Re5 b5
31. b3 Qe7 32. Reg5 Qf6 33. Rc5 Qxf4 34. Kb2 Bf3 35. Qh3 Bd5 36. Qd3 g6 37. Qh3
Rg7 38. Rg4 Qd2 39. Rxc7 h5 40. Kb1 Kg8 41. Rg1 b4 42. Rd1 Qf4 43. Rc5 bxc3 44.
Rxc3 Be4 45. Bxe4 Qxe4+ 46. Kc1 Kh7 47. Rc4 Rgg8 48. d5 Rc8 49. Qc3 Rxc4 50.
bxc4 exd5 51. c5 Qf4+ 52. Rd2 d4 53. Qc4 Rc8 54. Kc2 Qe4+ 55. Kd1 Qb1+ 56. Ke2
Re8+ 57. Kf2 Qf5+ 58. Kg3 Re3+ 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "6.1"]
[White "Vaklinov, Vasil"]
[Black "Petrov, Vladimir Ol."]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2099"]
[BlackElo "2028"]
[PlyCount "20"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d5 6. exd5 Nxd5 7. O-O O-O 8.
Re1 Re8 9. Nbd2 Bg4 10. h3 Nb8 1/2-1/2

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "6.2"]
[White "Krustev, Krasimir S."]
[Black "Kolev, Nikola Vl."]
[Result "0-1"]
[ECO "B27"]
[WhiteElo "1970"]
[BlackElo "1909"]
[PlyCount "132"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. d4 cxd4 3. c3 g6 4. Nf3 Bg7 5. Bc4 dxc3 6. Nxc3 Nh6 7. O-O O-O 8.
Qe2 Nc6 9. Rd1 Ng4 10. h3 Nge5 11. Nxe5 Nxe5 12. Bb3 b6 13. Bd5 Rb8 14. f4 e6
15. Bb3 Nc6 16. e5 Qe7 17. Ne4 Bb7 18. Nd6 Ba8 19. Be3 f6 20. exf6 Bxf6 21. a3
Qg7 22. Rd2 Nd4 23. Qd3 Nxb3 24. Qxb3 Bd5 25. Rxd5 exd5 26. Qxd5+ Kh8 27. Rc1
Qg8 28. Qd2 Qe6 29. Rc7 Ra8 30. Nb5 Rae8 31. Bf2 Qb3 32. Qxd7 Re7 33. Qd6 Ref7
34. Nc3 Kg8 35. Kh2 Rd8 36. Qc6 Rxc7 37. Qxc7 Qf7 38. Qc6 Bg7 39. Qf3 Rd2 40.
Ne4 Rxb2 41. Ng5 Qc4 42. Qa8+ Bf8 43. Bg3 Re2 44. Qxa7 Be7 45. Qa8+ Kg7 46. Nf3
Qe4 47. Qxe4 Rxe4 48. Nd2 Rd4 49. Nf3 Ra4 50. Bf2 Rxf4 51. Bxb6 Bxa3 52. Bf2
Bb2 53. Bg3 Rf5 54. Nh4 Ra5 55. Nf3 Kf6 56. Be1 Be5+ 57. Nxe5 Rxe5 58. Bc3 Kf5
59. Bxe5 Kxe5 60. Kg3 Ke4 61. Kg4 h6 62. h4 Ke5 63. g3 Ke4 64. Kh3 Kf3 65. g4
Kf4 66. g5 h5 {Kg4+} 0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "6.3"]
[White "Hristov, Hristo M"]
[Black "Ginev, Nikola"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "2138"]
[BlackElo "1714"]
[PlyCount "66"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. c4 Nc6 3. Ne2 Nf6 4. Nbc3 e5 5. d3 h6 6. g3 d6 7. Bg2 Be7 8. O-O
O-O 9. f4 Bg4 10. f5 Nd4 11. h3 Bxe2 12. Nxe2 Nxe2+ 13. Qxe2 Nd7 14. h4 Nb8 15.
Qf2 Bf6 16. Be3 Nc6 17. Bf3 Nd4 18. Kg2 Kh7 19. Rh1 g6 20. Bg4 Kg7 21. Raf1 Qe7
22. Qd2 Rh8 23. fxg6 fxg6 24. Rf2 g5 25. Bxd4 exd4 26. Bh5 Raf8 27. Rhf1 gxh4
28. gxh4 Rhg8 29. Kh1 Kh7 30. Qf4 Bg7 31. Qh2 Rxf2 32. Qxf2 Rf8 33. Qxf8 Qxh4+
0-1

[Event "189th open MGU"]
[Site "Sofia"]
[Date "2017.09.10"]
[Round "6.5"]
[White "Andreev, Dobrotich"]
[Black "Doykov, Stoycho"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "1881"]
[PlyCount "119"]
[EventDate "2017.09.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 Nc6 7. Nb3 e6 8. Be3
b5 9. Qd2 Be7 10. O-O-O Bb7 11. g4 Qc7 12. Qf2 Nd7 13. Bd3 O-O-O 14. Kb1 Kb8
15. Bxb5 Bf6 16. Bxc6 Bxc6 17. Bd4 Bxd4 18. Qxd4 Ne5 19. Rhf1 g5 20. Qb4+ Ka8
21. Qa3 Ka7 22. Nd4 Qb6 23. Na4 Nc4 24. Nxb6 Nxa3+ 25. bxa3 Kxb6 26. Nxc6 Kxc6
27. Rd3 h5 28. h3 h4 29. Rfd1 Rb8+ 30. Kc1 Rhd8 31. e5 d5 32. Rb3 Rb5 33. Kd2
Rdb8 34. Rdb1 Kc5 35. Kd3 d4 36. a4 Rxb3+ 37. Rxb3 Rd8 38. Ke4 Rf8 39. c3 Rd8
40. cxd4+ Rxd4+ 41. Ke3 Rxa4 42. Rb7 Rf4 43. Rd7 a5 44. Rd8 Ra4 45. Rd2 Ra3+
46. Ke4 Ra4+ 47. Ke3 Rc4 48. Rd7 Ra4 49. Rd2 Rf4 50. Rd8 a4 51. Rg8 Kb4 52.
Rxg5 Rc4 53. Rg7 Ka3 54. Rxf7 Kxa2 55. Ra7 Kb3 56. g5 a3 57. g6 Ra4 58. Rxa4
Kxa4 59. g7 Kb3 60. Ke4 1-0