[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "1.1"]
[White "Angelov, Georgi G."]
[Black "Vassilev, Martin"]
[Result "0-1"]
[ECO "D93"]
[WhiteElo "1584"]
[BlackElo "2040"]
[PlyCount "30"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bf4 O-O 6. e3 c5 7. dxc5 Qa5 8. Qb3
Ne4 9. Rc1 Nxc3 10. bxc3 dxc4 11. Bxc4 Nc6 $146 ({RR} 11... Qxc5 12. O-O ({RR} 
12. Qb4 Nd7 13. O-O b6 ({RR} 13... a5 14. Qxc5 Nxc5 15. Rfd1 Bg4 16. h3 Bxf3
17. gxf3 Rac8 18. Bb5 Ne6 19. Bg3 {1/2 Leepin,P-Rabar,B/Ljubljana 1949/EXT 2003
}) 14. Qxc5 Nxc5 15. Be5 Bb7 16. Bxg7 Kxg7 17. Rfd1 Rfd8 18. Rd4 Bxf3 19. gxf3
e5 20. Rd5 Rxd5 21. Bxd5 Rd8 22. Rd1 Na4 23. c4 b5 24. Rb1 Nc3 25. Rb3 Nxd5 26.
cxd5 Rxd5 {Klopf,G (1828)-Kratschmer,H (2044)/Neumarkt am Wallersee 2016/CBM
174 Extra/0-1 (50)}) 12... e5 13. Bg3 Nc6 14. Rfd1 Na5 15. Qb4 Qxc4 16. Qxa5 f6
17. Nd2 Qc6 18. f3 Be6 19. Ne4 b6 20. Qa3 Bd5 21. Nd6 Rfd8 22. c4 Be6 23. Ne4
Bxc4 24. Rxd8+ Rxd8 25. Qe7 Ra8 26. Nd6 {
McMahon,D-Gillen,A/Dublin 1991/TD/1-0 (56)}) 12. Ng5 Qxc5 $4 (12... Nd8 $142
$14) 13. Nxf7 $2 (13. Bxf7+ Kh8 14. h4 $18) 13... Na5 14. Nh6+ Kh8 15. Nf7+
Rxf7 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "1.3"]
[White "Mladenov, Andrey"]
[Black "Metev, Martin"]
[Result "0-1"]
[ECO "D48"]
[WhiteElo "1566"]
[BlackElo "1910"]
[PlyCount "94"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. Nf3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3
a6 9. e4 c5 10. e5 cxd4 11. exf6 ({RR} 11. Ne2 Nd5 ({RR} 11... Ng4 12. Be4 Rb8
13. Bc6 Qb6 14. Bxd7+ Bxd7 15. Qxd4 Qxd4 16. Nfxd4 Bc5 17. Bf4 f6 18. exf6 e5
19. fxg7 Rg8 20. Bg3 Rc8 21. Nb3 Bb4+ 22. Nd2 {
0-1 Modi,S (1706)-Gardiner,N (1515)/Bloemfontein 2016/CBM 171 Extra}) 12. O-O
Nc5 13. Nexd4 Nxd3 14. Qxd3 h6 15. Bd2 Bb7 16. Rac1 Be7 17. Nxe6 fxe6 18. Qg6+
Kd7 19. Nd4 Qb6 20. Nb3 Rac8 21. Ba5 Qa7 22. Rcd1 Rc4 23. Rd3 Rf8 24. Qxg7 Rff4
25. Qxh6 Qb8 {
Dzagnidze,N (2557)-Ushenina,A (2501)/Beijing 2013/CBM 157 Extra/0-1 (40)})
11... dxc3 12. fxg7 $146 ({RR} 12. bxc3 Nxf6 13. Bg5 Be7 14. Qc2 h6 15. Rd1
hxg5 16. Ne5 Qc7 17. Nxf7 Kxf7 18. Bg6+ Kf8 19. Rd3 Bb7 20. Qe2 Bd5 21. Qe3 Qf4
22. Qb6 Qc1+ {0-1 Fermino,R (1748)-Caris,E/Sao Paulo 2011/EXT 2014}) ({RR} 12.
Be4 Rb8 13. fxg7 Bxg7 14. bxc3 Qc7 ({RR} 14... Bxc3+ 15. Bd2 Bxd2+ 16. Qxd2 Nc5
17. Qc3 Nxe4 18. Qxh8+ Ke7 19. Qxd8+ Kxd8 20. Ne5 Ke8 21. Rc1 f6 22. f3 Nd6 23.
Ng4 Kf7 24. Rc7+ Kg6 25. Kf2 Rb6 26. Rd1 e5 27. Ne3 Be6 28. Nd5 Bxd5 29. Rxd5 {
Taube,H-Bogoljubow,E/Berlin 1935/EXT 2008/1-0 (57)}) 15. O-O Nc5 16. Bc2 Bxc3
17. Be3 Bb7 18. Rc1 b4 19. Nd4 Rg8 20. f3 Rd8 21. Ba4+ Ke7 22. Nc6+ Bxc6 23.
Bxc5+ Kf6 24. Qe2 Bxa4 25. Bf2 Qf4 26. Qxa6 Qg5 {
Kursk,E-Keres,P/Tallinn 1935/EXT 2001/0-1}) 12... Bxg7 13. Qc2 Nc5 14. Be2 cxb2
15. Bxb2 Qa5+ 16. Kf1 Bxb2 17. Qxb2 Rg8 18. Qc2 Qb6 19. Qxh7 Rf8 20. h4 Bb7 21.
Rd1 Ne4 22. Rd4 Nf6 23. Qd3 Qc5 24. Qd2 Rc8 25. Ne1 e5 26. Rd3 Ne4 27. Qe3 Qxe3
28. Rxe3 Rc1 29. Bd3 f5 30. Rhh3 Rc5 31. f3 Nd2+ 32. Kg1 f4 33. Re2 Nc4 34. Be4
$2 (34. h5 $14) 34... Bc8 $2 (34... Bxe4 35. Rxe4 Rd5 36. Re2 Rg8 $17) 35. Rh2
$2 (35. Nd3 $142) 35... Rc7 36. Nd3 Ke7 37. Nb4 Rd7 38. Nd3 Kf6 39. Kf2 Rfd8
40. Nb4 Ne3 41. Nc6 Rd1 42. Rb2 R8d2+ (42... Rf1+ $19) 43. Rxd2 Rxd2+ 44. Kg1
Be6 45. g4 Rd1+ 46. Kf2 Bc4 47. g5+ Kg7 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "1.4"]
[White "Andreev, Dobrotich"]
[Black "Georgiev, Nikolay Zh."]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "1907"]
[BlackElo "1560"]
[PlyCount "91"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Bg4 6. h3 Bxf3 7. Qxf3 Bc5 ({
RR} 7... Bd6 8. Qg3 Qf6 9. d3 Ne7 10. h4 h5 11. Bg5 Qg6 12. Qh3 f6 13. Be3 Qf7
14. O-O-O Ng6 15. g4 Nf8 16. g5 Ne6 17. g6 Qd7 18. Ne2 c5 19. Ng3 O-O-O 20. Qf5
Nf8 21. Rhg1 Qxf5 22. exf5 {
Korneev,O (2587)-Miton,K (2628)/Elgoibar 2007/CBM 121 Extra/1/2}) 8. d3 Qf6 ({
RR} 8... h6 9. a3 Nf6 10. Qg3 Qe7 11. O-O O-O-O 12. Rd1 Kb8 13. Rb1 g5 14. Be3
Nh5 15. Bxc5 Qxc5 16. Qe3 Qd4 17. Ne2 Qd7 18. Ng3 Ng7 19. Qc5 f6 20. c3 h5 21.
Ne2 Ne6 22. Qe3 Nf4 23. d4 {
Both,G (1421)-Lopez,V (1442)/Frankfurt 2015/EXT 2016/1-0 (36)}) 9. Qxf6 Nxf6
10. f4 $146 ({RR} 10. Bg5 Nd7 11. Be3 O-O-O 12. Rd1 Rhe8 13. Ke2 f6 14. Kf3 b5
15. Ne2 Bxe3 16. fxe3 c5 17. b3 Nb6 18. g4 Rd7 19. h4 Red8 20. Rdf1 Rf7 21. Kg2
Nd7 22. Rf2 Re7 23. Ng3 Nf8 24. g5 fxg5 {
Noakh,M-Karpov,A/Leningrad 1966/EXT 2007/0-1 (100)}) 10... Nd7 11. fxe5 Nxe5
12. Bf4 Bd6 13. Ne2 O-O 14. O-O-O Ng6 15. Rhf1 Nxf4 16. Nxf4 Rae8 17. g4 f6 18.
Rf3 Re5 19. Ng2 b6 20. Rdf1 c5 21. Ne3 Ree8 22. Rf5 Re5 23. a4 a5 24. Kd2 Rxf5
25. Rxf5 Re8 26. Rd5 Re5 27. Kc3 Rxd5 28. Nxd5 Kf7 29. Kc4 Ke6 30. Kb5 Kd7 31.
Nxb6+ cxb6 32. Kxb6 h6 33. c3 g6 34. Kxa5 Kc6 35. b4 h5 36. gxh5 gxh5 37. d4
cxb4 38. cxb4 Bf8 39. b5+ Kb7 40. b6 Bd6 41. Kb5 Bf4 42. a5 Be3 43. a6+ Kb8 44.
d5 Bd4 45. Kc6 Bc3 46. d6 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "1.5"]
[White "Simov, Zahari"]
[Black "Nikolov, Petko"]
[Result "0-1"]
[ECO "D01"]
[WhiteElo "1499"]
[BlackElo "1867"]
[PlyCount "64"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 e6 2. Nc3 d5 3. d4 Nf6 4. Bg5 Be7 5. e3 Nbd7 6. Bd3 c5 7. Bb5 ({RR} 7.
O-O b6 ({RR} 7... a6 8. Ne5 Nxe5 9. dxe5 Nd7 10. Bxe7 Qxe7 11. f4 b5 12. a3 Bb7
13. Qd2 g5 14. Be2 gxf4 15. exf4 d4 16. Nd1 Nb6 17. Bf3 O-O-O 18. Qe2 Rhg8 19.
Bxb7+ Qxb7 20. Qf3 d3 21. cxd3 Rxd3 22. Qxb7+ {Rodriguez Fontecha,M (2356)
-Gonzalez Perez,A (2460)/Bilbao 2016/CBM 173 Extra/0-1 (45)}) 8. Bb5 O-O 9. Ne2
Bb7 10. c3 Ne4 11. Bf4 a6 12. Bd3 g5 13. Bg3 Nxg3 14. hxg3 c4 15. Bc2 Qc7 16.
g4 h6 17. Nd2 Nf6 18. f3 Rfe8 19. Rf2 b5 20. Nf1 Bd6 21. Qd2 Bc6 {
Velten,P (2429)-Tregubov,P (2616)/Saint-Quentin 2014/CBM 160 Extra/1/2 (67)})
7... a6 8. Bxd7+ Nxd7 $146 ({RR} 8... Bxd7 9. Bxf6 Bxf6 10. Ne5 Qc7 11. f4 Bh4+
12. g3 Bf6 13. Qd2 c4 14. Nxd7 Qxd7 15. Ne2 Qb5 16. c3 Qc6 17. O-O-O Be7 18.
Rdf1 b5 19. f5 a5 20. fxe6 Qxe6 21. Nf4 Qd7 22. Qg2 Rd8 23. Rf2 {Rodriguez Mort
e,G (1699)-Berbel Gutierrez,J (1796)/Llinars del Valles 2015/EXT 2016/0-1 (35)}
) 9. Bxe7 Qxe7 10. a4 O-O 11. O-O f5 12. dxc5 Nxc5 13. Qd4 Bd7 14. b4 Ne4 15.
Nxe4 dxe4 16. Ne5 Rfd8 17. Qb2 Rac8 18. Rfd1 $2 {Äèàãðàììà #} (18. c4 $142 $11)
18... Bxa4 $1 19. Rxd8+ Rxd8 20. h3 Be8 21. c4 Qd6 22. f4 exf3 23. Nxf3 Qd3 24.
Qe5 Qxc4 25. Nd4 Bf7 26. Qc5 Qxc5 27. bxc5 f4 $2 (27... Rc8 $142 $19) 28. Kf2 (
28. c6 $142 bxc6 29. Nxc6 Ra8 30. exf4 $17) 28... Rc8 29. c6 bxc6 30. Rxa6 c5
31. Nxe6 fxe3+ 32. Ke1 c4 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "1.6"]
[White "Ruschukov, Boyan"]
[Black "Stoyanov, Plamen"]
[Result "1/2-1/2"]
[ECO "E97"]
[WhiteElo "1825"]
[BlackElo "1427"]
[PlyCount "100"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5
Ne7 9. b4 a5 10. Ba3 axb4 11. Bxb4 b6 12. a4 Ba6 13. a5 bxa5 14. Bxa5 Qd7 15.
Nd2 $146 ({RR} 15. c5 Rfb8 16. Ra2 Bxe2 17. Qxe2 Nh5 18. c6 Qc8 19. h3 Nf4 20.
Qc4 h6 21. Nb5 f5 22. Nxc7 Rxa5 23. Rxa5 Qxc7 24. Rfa1 fxe4 25. Ra7 Qb6 26.
Rxe7 exf3 27. c7 Rc8 28. Qa4 Nxd5 29. Re8+ Kh7 {
Cruz,W (2239)-Biazotto,G (1767)/Matinhos 2015/EXT 2016/1-0 (32)}) 15... Bh6 16.
Qc2 Nc8 17. Rfd1 c6 18. Nb3 cxd5 19. cxd5 Ne7 20. Bb6 Bxe2 21. Qxe2 Qb7 22. Qb5
Rfb8 23. Rxa8 Rxa8 24. Na5 Qa6 25. Qxa6 Rxa6 26. Bd8 Bf8 27. f3 Nh5 28. Rb1 Ra8
29. Bc7 Nc8 30. g3 Ng7 31. Rb8 Rxb8 32. Bxb8 Ne8 33. Nb5 h5 34. f4 Kg7 35. fxe5
dxe5 36. Bxe5+ f6 37. Bd4 Ncd6 38. Nxd6 Bxd6 39. Nc4 Bb8 40. e5 fxe5 41. Nxe5
Bxe5 42. Bxe5+ Kf7 43. Kf2 Nf6 44. Bxf6 Kxf6 45. Ke3 Ke5 46. h4 Kxd5 47. Kf4
Ke6 48. Kg5 Kf7 49. Kh6 Kf6 50. Kh7 Kf7 1/2-1/2

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "1.7"]
[White "Grabchev, Plamen"]
[Black "Ignatov, Bojidar"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "1356"]
[BlackElo "1806"]
[PlyCount "52"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 d5 2. e3 c6 3. b3 Bg4 ({RR} 3... Bf5 4. Bb2 e6 5. d3 h6 6. Nbd2 Nf6 7.
Qe2 Bc5 8. g3 Qe7 9. a3 Nbd7 10. Bg2 e5 11. e4 dxe4 12. dxe4 Bh7 13. O-O O-O
14. Kh1 Rfe8 15. b4 Bd6 16. Ne1 Nb6 17. Nc4 Na4 18. Nd3 {
Dzagnidze,N (2516)-Stefanova,A (2531)/Porto Carras 2011/EXT 2012/1/2}) 4. a4
$146 ({RR} 4. h3 Bh5 5. Bb2 Nf6 6. Be5 Nbd7 7. g4 Bg6 8. Bb2 Qc7 9. Ba3 Be4 10.
Bg2 Ne5 11. O-O Nxf3+ 12. Bxf3 Bxf3 13. Qxf3 e5 14. Qg3 Ne4 15. Qh2 Bxa3 16.
Nxa3 Nxd2 17. Rfd1 Nf3+ 18. Kg2 Nxh2 {
Kara,M-Yildirim,O (1449)/Konya 2016/CBM 173 Extra/0-1}) ({RR} 4. Bb2 Nd7 5. Be2
({RR} 5. d4 e6 6. Be2 f5 7. Nbd2 Ngf6 8. c4 Be7 9. Ng5 Bxe2 10. Qxe2 Nf8 11. f3
h6 12. Nh3 Qd7 13. Nf4 g5 14. Nd3 Ng6 15. O-O-O O-O-O 16. e4 Ne8 17. Nc5 Bxc5
18. dxc5 Rf8 19. cxd5 exd5 {
Vit,J (2075)-Marsalek,Z (2245)/Czechia 1998/EXT 2003/1/2}) 5... e6 6. O-O f5 7.
d3 Ngf6 8. Nd4 Bd6 9. Nxe6 Qe7 10. Nd4 Qe5 11. g3 Bh3 12. Re1 O-O-O 13. Nd2 Qe7
14. Bf1 Bxf1 15. Nxf5 Qe6 16. Nxd6+ Qxd6 17. Nxf1 h5 18. e4 dxe4 {
Torgalsen,J-Dominguez,C/Buenos Aires 1960/MCD/1-0 (58)}) 4... e5 5. Be2 Bd6 6.
Ba3 Nf6 7. d3 Qe7 8. Bxd6 Qxd6 9. h3 Bh5 10. Nbd2 Nbd7 11. Nh2 Bg6 12. Ng4
O-O-O 13. c4 dxc4 14. Nxc4 Qb4+ 15. Kf1 e4 16. d4 Nd5 17. Nge5 Nxe5 18. Nxe5
Rd6 19. Qc2 f5 20. h4 Be8 21. Qc5 Qxc5 22. dxc5 Rf6 23. g4 f4 24. g5 Rff8 25.
Bg4+ Kb8 26. Ke2 h6 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "1.8"]
[White "Kostov, Nikolay"]
[Black "Angelov, Toma"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1680"]
[BlackElo "1287"]
[PlyCount "55"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. e3 Nf6 3. Bd3 Bg4 4. f3 ({RR} 4. Be2 Bxe2 5. Qxe2 a6 6. f4 e6 7.
Nf3 c5 8. c3 Nc6 9. O-O Be7 10. Nbd2 O-O 11. Ne5 Ne4 12. Qf3 f5 13. Nxe4 fxe4
14. Qg4 Nxe5 15. fxe5 Rxf1+ 16. Kxf1 Qf8+ 17. Kg1 Qf5 18. Qxf5 exf5 {
Kucharska,H (1206)-Zabrzanska,W (1486)/Prague 2016/CBM 174 Extra/0-1 (45)})
4... Bd7 5. f4 Bg4 6. Nf3 Bxf3 $146 ({RR} 6... e6 7. O-O c5 ({RR} 7... Nc6 8.
c3 Bd6 9. Nbd2 O-O 10. Qb3 Na5 11. Qc2 b5 12. Bxb5 c6 13. Bd3 c5 14. Be2 cxd4
15. cxd4 Rc8 16. Qd1 Nc6 17. Qa4 Qb6 18. Ba6 Rc7 19. Bb5 Bf5 20. Ne5 {
1-0 Yap,C (1994)-Pg,L (2127)/Bandar Seri Begawan 2011/EXT 2012}) 8. c3 Nc6 9.
Nbd2 c4 10. Bc2 b5 11. Qe1 Bd6 12. Ne5 Qc7 13. Qg3 h5 14. h3 h4 15. Qe1 Bf5 16.
Bxf5 exf5 17. Ndf3 Bxe5 18. fxe5 Ne4 19. Nxh4 g6 20. Nf3 g5 21. Nd2 {
Niering,T (1661)-Luszczynski,J/Germany 2007/EXT 2008/1-0 (53)}) ({RR} 6... Ne4
7. O-O e6 8. Qe1 Bd6 9. Ne5 Bxe5 10. fxe5 O-O 11. Nd2 Bf5 12. Nxe4 Bxe4 13.
Bxe4 dxe4 14. Rf4 Qd5 15. Qh4 f5 16. exf6 Rxf6 17. Rxf6 gxf6 18. Qxf6 Nd7 19.
Qe7 Qd6 20. Qg5+ Kh8 21. Bd2 {
Akhmetova,V-Lomakina,N/Nikolaev 1999/EXT 2002/1/2 (57)}) 7. Qxf3 e6 8. O-O Nc6
9. a3 Bd6 10. b4 O-O 11. Bb2 g6 12. g4 Ne4 13. Bxe4 dxe4 14. Qxe4 Qh4 15. Qg2
g5 16. Nd2 Ne7 17. Nf3 Qh6 18. Nxg5 Ng6 19. Nf3 Rfe8 20. g5 Qg7 21. Kh1 h6 22.
c4 hxg5 23. Nxg5 f6 24. Nh3 Qh6 25. c5 Be7 26. Rg1 f5 27. Qxg6+ Qxg6 28. Rxg6+
1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "2.1"]
[White "Vassilev, Martin"]
[Black "Andreev, Dobrotich"]
[Result "1-0"]
[ECO "B18"]
[WhiteElo "2040"]
[BlackElo "1907"]
[PlyCount "61"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. N1e2 e6 7. Nf4 Bd6 8.
h4 Qc7 9. Nxg6 hxg6 10. Ne4 Bf4 11. Bd3 ({RR} 11. Bxf4 Qxf4 12. Ng5 Nf6 ({RR} 
12... Nd7 13. g3 Qc7 14. Bg2 Nh6 15. O-O Nf6 16. c3 Nf5 17. Qf3 O-O 18. Rfe1 a5
19. Rad1 Rab8 20. Qe2 b5 21. Nf3 c5 22. dxc5 Qxc5 23. Qe5 Qb6 24. Nd4 Nxd4 25.
Rxd4 Rfd8 26. Red1 b4 27. c4 {
Wagener,C (2295)-Dive,R (2309)/Baku 2016/EXT 2017/0-1 (85)}) 13. g3 Qd6 14. c3
Qd5 15. Rg1 Nbd7 16. Bg2 Qf5 17. Qe2 Qa5 18. a3 O-O 19. O-O-O e5 20. Rge1 exd4
21. Rxd4 Rae8 22. Qd1 Nc5 23. Rxe8 Rxe8 24. Bf1 Nce4 25. Nxe4 Nxe4 {
Duda,J (2603)-Navara,D (2727)/Wroclaw 2014/CBM 164 Extra/1-0 (62)}) 11... Nd7
12. c3 $146 ({RR} 12. Bxf4 Qxf4 13. g3 Qc7 14. Qf3 Ngf6 15. Ng5 c5 16. O-O-O
cxd4 17. Bxg6 fxg6 18. Nxe6 Qc4 19. Rhe1 Rc8 20. c3 Qxa2 21. Nc5+ Kf7 22. Nxb7
Qa1+ 23. Kc2 Qa4+ 24. Kc1 Kf8 25. Re2 Rh5 26. g4 Rb5 {
Puppi Lazo,J (1948)-Leiva Rodriguez,J (2406)/Piura 2013/CBM 155 Extra/0-1})
12... Ngf6 13. Ng5 Nd5 14. g3 Bxg3 $5 15. Qg4 $2 (15. fxg3 $142 Qxg3+ 16. Kd2
Rxh4 17. Qg1 $1 $16) 15... Bf4 {Äèàãðàììà #} 16. Bxg6 $5 fxg6 $4 (16... Bxg5
$142 $17 17. Qxe6+ Be7 18. Qxf7+ Kd8 $17) 17. Nxe6 (17. Qxe6+ $142 Kd8 18. Nf7+
Kc8 19. Nxh8 $18) 17... Qd6 18. Qxg6+ Ke7 19. Nxf4 Nxf4 20. Qxd6+ Kxd6 21.
Bxf4+ Kd5 22. Kd2 Raf8 23. Bg3 Nf6 24. Kd3 b5 25. b3 c5 26. c4+ Kc6 27. d5+ Kb6
28. Rae1 Nh5 29. Re6+ Ka5 30. b4+ cxb4 31. Bc7+ 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "2.2"]
[White "Nikolov, Petko"]
[Black "Kolev, Nikola Vl."]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1867"]
[BlackElo "1913"]
[PlyCount "105"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 e6 2. e4 d5 3. exd5 exd5 4. Bd3 Nf6 5. Bg5 Be7 6. Ne2 O-O 7. Nbc3 c6 ({RR
} 7... Re8 8. O-O ({RR} 8. Qd2 Nbd7 9. f3 b6 10. O-O Bb7 11. Rfe1 c6 12. Ng3 g6
13. Nce2 Qc7 14. h4 Bd6 15. Nf5 Nh5 16. g4 Ng7 17. Nxd6 Qxd6 18. Kg2 a5 19. Bf4
Qf8 20. Ng3 Ne6 21. Bh6 Qd6 22. c3 c5 {
Tran,N (2219)-Gomez,J (2524)/Ho Chi Minh City 2015/CBM 165 Extra/1-0 (47)})
8... Nbd7 9. Ng3 Nf8 10. Nf5 Bxf5 11. Bxf5 g6 12. Bh3 Nh5 13. Be3 Bg5 14. Qf3
c6 15. Na4 Bxe3 16. fxe3 Qe7 17. Rae1 Ng7 18. Nc5 Nfe6 19. Nxe6 Nxe6 20. Bxe6
Qxe6 21. Qf6 Qd7 22. Rf3 {
Milos,G (2565)-Andersson,U (2625)/Tilburg 1993/CBM 039/0-1 (75)}) 8. O-O Bg4 9.
f3 Be6 $146 ({RR} 9... Bh5 10. Nf4 Bg6 11. Bxg6 hxg6 12. Re1 Nbd7 13. Re2 Bd6
14. Nd3 Qc7 15. g3 Qb6 16. Be3 Rfe8 17. Qd2 Nf8 18. Na4 Qc7 19. Nac5 b6 20. Nb3
Ne6 21. Rae1 c5 22. Ne5 Nxd4 23. Bxd4 cxd4 24. f4 {
Gruenwald,E (1989)-Tereick,B (2090)/Willingen 2004/EXT 2005/0-1 (60)}) 10. Kh1
Qc8 11. Ng3 h6 12. Bf4 Re8 13. Nce2 Nbd7 14. c3 Nf8 15. Qc2 Qd8 16. Rae1 Bd6
17. Nf5 Bxf5 18. Bxf5 Qc7 19. Bxd6 Qxd6 20. Ng3 g6 21. Bd3 Kg7 22. Qf2 Re6 23.
f4 Rae8 24. Re2 Rxe2 25. Bxe2 N8d7 26. f5 g5 27. Bf3 g4 28. Bd1 h5 29. Qd2 Kh7
30. Qg5 Rg8 31. Qh4 Kh6 32. Ne2 Ne4 33. Bc2 Qf6 34. Qe1 Re8 35. Bxe4 Rxe4 36.
Qf2 h4 37. Nf4 Qg5 38. g3 h3 39. Qd2 Nf6 40. Qd3 Kh7 41. Kg1 Qg8 42. Qd1 Qe8
43. Nd3 Re2 44. Ne5 Rxb2 45. Rf2 Rb6 46. Rc2 Qg8 47. Qc1 Ne4 48. Kf1 Qc8 49.
Qf4 Rb1+ 50. Ke2 Rh1 51. Qxg4 Rxh2+ 52. Kf3 Rxc2 53. Qh5+ 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "2.4"]
[White "Ignatov, Bojidar"]
[Black "Ruschukov, Boyan"]
[Result "0-1"]
[ECO "B99"]
[WhiteElo "1806"]
[BlackElo "1825"]
[PlyCount "72"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
Nbd7 9. O-O-O Qc7 10. g4 b5 11. Bxf6 gxf6 12. Bd3 Bb7 13. Rhe1 Nc5 ({RR} 13...
Nb6 14. Kb1 b4 15. Nce2 O-O-O 16. Nb3 Kb8 17. Ned4 Na4 18. Qe2 Qb6 19. Bc4 Nc5
20. Nxc5 dxc5 21. Nf3 Rxd1+ 22. Rxd1 Rd8 23. Rd3 Rxd3 24. cxd3 Bd8 25. f5 Qd6
26. Qe3 Bc7 27. Kc2 exf5 28. gxf5 {
Magyar,A (2262)-Bartha,S (2065)/Hungary 2015/CBM 170 Extra/1/2 (56)}) 14. Kb1
b4 ({RR} 14... O-O-O 15. a3 h5 16. gxh5 f5 17. Qe3 fxe4 18. Nxe4 Kb8 19. Ng3
Bf6 20. Be2 Rc8 21. Bf3 d5 22. Be2 Na4 23. c3 Bg7 24. Rf1 Rhe8 25. Rf3 Qb6 26.
Qg1 Bf8 27. Rc1 f6 28. Rff1 Nxb2 29. Kxb2 {Paramos Dominguez,R (2425)-Moreno
Carnero,J (2474)/Palencia 1999/CBM 071 Extra/0-1 (39)}) 15. Nce2 d5 16. exd5
$146 ({RR} 16. Ng3 Rc8 17. Rc1 dxe4 18. Nxe4 Nxd3 19. cxd3 Qb6 20. Rxc8+ Bxc8
21. Nb3 Bb7 22. d4 Bd5 23. Nxf6+ Bxf6 24. Qxd5 O-O 25. Qe4 Rd8 26. f5 exf5 27.
gxf5 Bxd4 28. Nxd4 Qxd4 29. Qxd4 Rxd4 30. f6 h6 {
Stavnjak,L (2247)-Obarcanin,N (2089)/Gorazde 2010/EXT 2011/1-0 (62)}) 16...
Bxd5 17. Qe3 Nxd3 18. Qxd3 Qc4 19. Qxc4 Bxc4 20. Ng3 O-O-O 21. Nc6 Rxd1+ 22.
Rxd1 Bc5 23. Ne4 Kc7 24. Nxc5 Kxc6 25. Nd3 a5 26. g5 Bxd3 27. Rxd3 fxg5 28.
fxg5 Rg8 29. h4 h6 30. Rg3 hxg5 31. hxg5 Rg6 32. c3 f6 33. cxb4 axb4 34. Re3
fxg5 35. Kc2 g4 36. Rg3 Kd5 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "2.5"]
[White "Stoyanov, Plamen"]
[Black "Nenchev, Georgi"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "1427"]
[BlackElo "1450"]
[PlyCount "45"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. g3 Nc6 6. a3 Bxd2+ 7. Nbxd2 d5 8.
Bg2 O-O 9. O-O $146 ({RR} 9. Qc2 b6 ({RR} 9... Rd8 10. O-O Qd6 11. b4 a6 12.
Rac1 Bd7 13. Rfd1 b5 14. cxd5 exd5 15. Nb3 Ne4 16. Nc5 Nxc5 17. dxc5 Qf6 18.
Rxd5 Ne7 19. Rd2 Bf5 20. Qd1 Rxd2 21. Qxd2 Be4 22. Rd1 Nc6 23. Qe3 Bxf3 24.
Qxf3 {
Bjornsson,T (2158)-Saemundsson,B (1923)/Reykjavik 2011/CBM 141 Extra/1-0 (43)})
10. cxd5 Nxd5 11. Qxc6 Bd7 12. Qc2 Rac8 13. O-O c5 14. Qd3 Rc7 15. e4 Nf6 16.
d5 exd5 17. exd5 Qd6 18. Nc4 Bb5 19. Nxd6 Bxd3 20. Rfd1 c4 21. Ne5 Rd8 22. Nb5
Rc5 23. Nc3 Bc2 {
Schulz,W (2084)-Gantzert,R (1698)/Winnipeg 1998/EXT 2001/1-0 (31)}) 9... dxc4
10. Nxc4 Rd8 11. e3 h6 12. Qc2 Ne8 13. Rfd1 Nd6 14. Nce5 Nxe5 15. Nxe5 c6 16.
Rac1 Bd7 17. Qb3 Rab8 18. Nd3 Qe8 19. Nc5 Nb5 20. e4 Bc8 21. e5 Nc7 22. Ne4 Nd5
23. Nd6 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "2.8"]
[White "Angelov, Toma"]
[Black "Mladenov, Andrey"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1287"]
[BlackElo "1566"]
[PlyCount "26"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nc3 Nc6 3. Bc4 Nf6 4. d3 g6 5. Nf3 d6 6. O-O Bg7 7. Bb5 ({RR} 7. a4
O-O 8. h3 h6 9. Be3 e5 10. Nd2 Nh5 11. Nd5 Ne7 12. c3 Be6 13. Nxe7+ Qxe7 14. b4
cxb4 15. cxb4 Rfd8 16. Qb3 Nf6 17. Bxe6 fxe6 18. Rac1 Kh7 19. f4 exf4 20. Rxf4
e5 21. Rf3 d5 {
McShane,L (2511)-Gormally,D (2481)/Birmingham 2001/CBM 084 Extra/1-0 (36)})
7... Qc7 $146 ({RR} 7... Bd7 8. b3 ({RR} 8. Ng5 O-O 9. Be3 Ng4 10. Qd2 Nxe3 11.
Qxe3 Bh6 12. a4 e6 13. a5 Bxg5 14. f4 Bf6 15. Na4 Bd4 16. Qf2 Bxf2+ 17. Rxf2
Qxa5 18. b4 Qxb5 19. c3 cxb4 20. cxb4 Nxb4 21. d4 Nd3 22. Rd2 Qc4 {
Schultz,T-Wolkow,M (1545)/Dortmund 2004/EXT 2006/0-1}) 8... Nxe4 9. dxe4 Bxc3
10. Rb1 Bg7 11. Bb2 Bxb2 12. Rxb2 O-O 13. Bxc6 Bxc6 14. e5 d5 15. c4 d4 16. Re1
Qc7 17. b4 b6 18. bxc5 bxc5 19. g3 Rab8 20. Rxb8 Rxb8 21. e6 f6 22. Qd2 {
Frenkiel,S-Brusilowicz,P/Koszalin 2008/EXT 2009/0-1}) 8. Bg5 O-O 9. Bxf6 Bxf6
10. Qd2 b6 11. Qh6 Bg7 12. Qg5 e6 13. Ne2 Bxb2 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "2.9"]
[White "Georgiev, Nikolay Zh."]
[Black "Grabchev, Plamen"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1560"]
[BlackElo "1356"]
[PlyCount "37"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 b6 2. Nc3 e6 3. Bc4 Bb7 4. d3 ({RR} 4. Qe2 c5 5. Nf3 a6 6. a4 d6 7. d4
cxd4 8. Nxd4 Nf6 9. O-O Qc8 10. Bg5 Nbd7 11. Rfe1 Be7 12. Rad1 h6 13. Bxf6 Nxf6
{1/2 Schlindwein,R (2440)-Bezold,M (2490)/Balatonbereny 1995/CBM 050/[King,D]}
{RR} 14. f4) 4... Bb4 5. Bd2 Ne7 6. Bb3 $146 ({RR} 6. a3 Bxc3 7. Bxc3 O-O 8.
Qg4 Ng6 9. O-O-O d5 10. exd5 exd5 11. Bb3 c5 12. Nf3 Nd7 13. h4 d4 14. Bd2 Nf6
15. Qh3 Bc8 16. Qg3 Bg4 17. Rde1 Qd7 18. Ne5 Nxe5 19. Rxe5 Nh5 20. Qh2 g6 {
Fieducik,M (1380)-Budrewicz,H (1641)/Warsaw 2012/EXT 2014/1-0 (58)}) 6... f5 7.
f3 fxe4 8. Nxe4 Bxd2+ 9. Qxd2 Bxe4 10. dxe4 d5 11. exd5 Nxd5 12. O-O-O h6 13.
c4 Qg5 14. Qxg5 hxg5 15. cxd5 exd5 16. Bxd5 c6 17. Be4 O-O 18. Nh3 Na6 19. Nxg5
1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "3.1"]
[White "Metev, Martin"]
[Black "Vassilev, Martin"]
[Result "0-1"]
[ECO "C18"]
[WhiteElo "1910"]
[BlackElo "2040"]
[PlyCount "114"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 O-O 8. Nf3
Nbc6 9. Bd3 f5 10. exf6 Rxf6 11. Bg5 e5 12. Qh4 e4 13. Bxf6 gxf6 14. Qxf6 Qf8
15. Qg5+ $146 ({RR} 15. Qxf8+ Kxf8 16. dxc5 ({RR} 16. Bxe4 dxe4 17. Ng5 cxd4 ({
RR} 17... Bf5 18. O-O-O h6 19. Nh3 Bxh3 20. gxh3 c4 21. Rhe1 Nd5 22. Kb2 Re8
23. Rg1 Kf7 24. Rg3 Rg8 25. Rxg8 Kxg8 26. Re1 Nf6 27. Kc1 Ne7 28. Kd2 Ned5 29.
a4 a5 30. Rb1 b6 31. Rg1+ Kf7 32. h4 {
Asvang,J (1164)-Thingstad,E (1668)/Moss 2006/EXT 2007/1/2 (35)}) 18. Nxe4 Bf5
19. f3 Bxe4 20. fxe4 dxc3 21. Rf1+ Kg7 22. Rf3 Re8 23. O-O-O Ne5 24. Rxc3 N7c6
25. a4 Re6 26. Rg3+ Kf8 27. Rf1+ Nf7 28. Rgf3 Ncd8 29. Re1 Ke7 30. h4 Ra6 {
Lalic,S-McDonald,N (2495)/Blackpool 1988/TD/0-1 (42)}) 16... exf3 17. gxf3 Bf5
18. O-O-O ({RR} 18. Rb1 Nd8 19. Rb4 Bg6 20. h4 Rc8 21. h5 Bxd3 22. cxd3 Rxc5
23. Kd2 Kg7 24. h6+ Kf8 25. Rf4+ Ke8 26. Rg4 Ng6 27. Rxg6 hxg6 28. h7 Nf7 29.
h8=Q+ Nxh8 30. Rxh8+ Kd7 31. Rh7+ Kc8 32. Re7 Ra5 {
Pierecker,M (2173)-Zauner,C (1960)/Austria 2016/EXT 2017/1-0 (64)}) 18... Bxd3
19. cxd3 d4 20. c4 Ne5 21. f4 Nd7 22. Rhg1 Nxc5 23. Rg5 b6 24. Kd2 Ne6 25. Rh5
Nxf4 26. Rxh7 Nfg6 27. Re1 Re8 28. Re6 Kg8 29. Rh6 Kf7 {Cori Quispe,K (2395)
-Szustakowski,A (2057)/Porto Carras 2015/CBM 169 Extra/1/2 (49)}) 15... Qg7 16.
Qxg7+ Kxg7 17. dxc5 exf3 18. gxf3 Ne5 19. Rg1+ N7g6 20. Ke2 Kf7 21. Bxg6+ Nxg6
22. Rg5 Kf6 23. Rag1 Bf5 24. Kd2 Re8 25. Rh5 Nf4 26. Rh6+ Bg6 27. Rg4 Ne6 28.
h4 Ng7 29. Rf4+ Nf5 30. h5 Kg5 31. hxg6 Nxh6 32. Rd4 Kxg6 33. Rxd5 Nf5 34. Rd7
Re7 35. Rd8 h5 36. Rg8+ Rg7 37. Rh8 h4 38. Ke2 Rh7 39. Rg8+ Kf6 40. Kf1 h3 41.
Kg1 Rg7+ 42. Rxg7 Nxg7 43. Kh2 Ne6 44. Kxh3 Nxc5 45. Kg4 Na4 46. Kf4 Nxc3 47.
Ke3 Nb5 48. a4 Nc3 49. a5 Ke5 50. f4+ Kd5 51. f5 Nd1+ 52. Ke2 Nb2 53. f6 Ke6
54. a6 b6 55. Kd2 Na4 56. Kd3 Nc5+ 57. Kc4 Nxa6 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "3.2"]
[White "Ruschukov, Boyan"]
[Black "Nikolov, Petko"]
[Result "0-1"]
[ECO "A96"]
[WhiteElo "1825"]
[BlackElo "1867"]
[PlyCount "62"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Be7 5. Nc3 d6 6. Nf3 O-O 7. O-O a5 8. Re1
Ne4 9. Qd3 Nxc3 10. bxc3 Bf6 11. e4 Nc6 12. Ba3 fxe4 13. Qxe4 Re8 14. Rad1 e5
$2 {Äèàãðàììà #} (14... Bd7 $142 $16) 15. d5 (15. Nxe5 $1 Nxe5 16. f4 $18)
15... Ne7 16. c5 Bf5 17. Qc4 b6 18. Nxe5 $6 (18. cxb6 $142 $16) 18... Bxe5 (
18... b5 $142 19. Qxb5 Bxe5 $15) 19. Rxe5 bxc5 20. Re3 Ng6 {Äèàãðàììà #} 21.
Qe2 (21. Bxc5 Ne5 22. Qe2 Ng4 23. Rxe8+ Qxe8 24. Qxe8+ Rxe8 $11) 21... Qd7 22.
Re1 Rxe3 23. fxe3 Ne5 24. e4 Bg4 25. Qc2 Rf8 26. Bc1 Nf3+ $2 (26... c4 $142 $15
) 27. Bxf3 Bxf3 28. c4 Qh3 29. Bb2 $2 {Äèàãðàììà #} (29. Bf4 Qg4 30. Qd2 h6 31.
e5 g5 32. Be3 $15) 29... h5 30. Re3 h4 31. gxh4 $4 (31. Qf2 Bxe4 32. Qe2) 31...
Qg4+ 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "3.3"]
[White "Kolev, Nikola Vl."]
[Black "Stoyanov, Plamen"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "1913"]
[BlackElo "1427"]
[PlyCount "99"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 O-O 6. h3 c5 7. d5 e6 8. dxe6
fxe6 ({RR} 8... Bxe6 9. Be2 Nc6 10. O-O Nd4 ({RR} 10... Na5 11. Qa4 Qb6 12. Bd2
Rfe8 13. Bd3 Nc6 14. Rfe1 Bd7 15. Qd1 Nb4 16. Bf1 Rac8 17. Bf4 Bf8 18. Qd2 Bc6
19. a3 Na6 20. Bd3 Nc7 21. b4 Ne6 22. Be3 Nd4 23. Qd1 Bg7 24. b5 Bd7 25. Nxd4 {
Idrisov,T (2289)-Abdisalimov,A (2310)/Baku 2016/CBM 174 Extra/1/2 (39)}) 11.
Nxd4 cxd4 12. Nb5 Nxe4 13. Nxd4 Qh4 14. Be3 Rae8 15. Nf3 Qd8 16. Bd4 Bf5 17.
Re1 Nc5 18. b4 Ne6 19. Bxg7 Kxg7 20. Nd4 Qf6 21. Nxf5+ Qxf5 22. Bf3 Nf4 23.
Qd4+ {Hort,V (2545)-Hendriks,W (2430)/Vlissingen 1996/CBM 053 Extra/1/2 (69)})
9. Bf4 $146 ({RR} 9. e5 dxe5 10. Qxd8 Rxd8 11. Nxe5 Nd5 12. Nxd5 exd5 13. Nf3
Nc6 14. Bd2 Re8+ 15. Kd1 Bf5 16. cxd5 Bxb2 17. dxc6 Bxa1 18. cxb7 Rad8 19. Bc4+
Kg7 20. Re1 Be4 21. Rxe4 Rxe4 22. Ng5 Ree8 23. Ne6+ Kf6 {
Gruenfeld,E-Reti,R/Vienna 1923/HCL/1/2 (35)}) ({RR} 9. Bg5 Nc6 10. e5 dxe5 11.
Bd3 Qb6 12. O-O e4 13. Nxe4 Nxe4 14. Bxe4 Qxb2 15. Rb1 Qxa2 16. Qd3 Qa5 17. Qd6
Re8 18. Bxc6 Qa6 19. Ne5 bxc6 20. f4 Qa3 21. Qc7 Ba6 22. Qf7+ Kh8 23. Bf6 Bxf6
{Abrahams,G-Barden,L/Nottingham 1954/EXT 1999/1-0}) ({RR} 9. Be2 Nc6 10. Bg5
Qa5 11. O-O Nd4 12. e5 dxe5 13. Nxe5 Qc7 14. Ng4 Bd7 15. Nb5 Bxb5 16. cxb5 Ne4
17. Be3 Rad8 18. Bxd4 Bxd4 19. Qb3 Kg7 20. Rad1 h5 21. Ne3 Qf4 22. Bf3 Be5 23.
Rfe1 Qh2+ {Romero,G (1898)-Rapanot,A (2171)/Olongapo City 2015/EXT 2017/0-1})
9... e5 10. Bg5 Nc6 11. Qd2 Nd4 12. Be2 Be6 13. b3 Qa5 14. Rd1 a6 15. O-O b5
16. Bxf6 Bxf6 17. cxb5 axb5 18. Nxd4 exd4 19. Nxb5 Qb6 20. Qc2 Be5 21. Bc4 Bxc4
22. Qxc4+ Kg7 23. a4 Qb8 24. Rd3 Rf4 25. Qd5 Qg8 26. Nc7 Qxd5 27. exd5 Rb8 28.
Ne6+ Kf6 29. Nxf4 Bxf4 30. g3 Bh6 31. Re1 Bf8 32. Rf3+ Kg7 33. Re4 Rb7 34. Ref4
Be7 35. Rf7+ Kg8 36. h4 Rd7 37. Kf1 Rb7 38. Ke2 Rd7 39. Kd3 Rb7 40. Ke4 Rc7 41.
Kd3 Rb7 42. Kc2 Ra7 43. Kb2 Rb7 44. Ka3 d3 45. R7f4 Kg7 46. Rxd3 Bf6 47. Re4
Bd4 48. Rdxd4 cxd4 49. Rxd4 Rf7 50. f4 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "3.4"]
[White "Andreev, Dobrotich"]
[Black "Simeonov, Daniel"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "1907"]
[BlackElo "1491"]
[PlyCount "81"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Bb4 6. Ndb5 d5 ({RR} 6... a6
7. Nd6+) ({RR} 6... Nf6 7. a3) 7. exd5 exd5 8. Qe2+ $146 ({RR} 8. Qxd5 Qe7+ 9.
Be3 ({RR} 9. Be2 Nf6 10. Qd3 a6 11. Nd4 Ne5 12. Qg3 Qc5 13. Nb3 Ne4 14. Nxc5
Nxg3 15. hxg3 Bxc5 16. Nd5 O-O 17. Be3 Bxe3 18. Nxe3 Be6 19. O-O b5 20. a4 Nc4
21. Nxc4 bxc4 22. Rfd1 a5 23. Rd4 Rfc8 {
Nevsky,I (1867)-Usov,A (1672)/Irkutsk 2013/CBM 155 Extra/1-0 (40)}) 9... Nf6
10. Qg5 O-O 11. a3 h6 12. Qh4 Ba5 13. Be2 a6 14. Nd4 Bxc3+ 15. bxc3 Ne5 16. O-O
Ng6 17. Qg3 Ne4 18. Qf3 Nxc3 19. Bd3 Ne5 20. Qg3 Nxd3 21. cxd3 Qf6 22. Rfe1 Be6
{Gifford,H-Clerc,A/Paris 1881/EXT 2009/0-1}) ({RR} 8. a3 Bxc3+ 9. Nxc3 Nge7 10.
Bd3 O-O 11. O-O d4 12. Ne2 a6 13. c3 dxc3 14. Nxc3 b5 15. Qc2 f5 16. Rd1 Nd4
17. Qd2 Nb3 18. Bc4+ bxc4 19. Qxd8 Rxd8 20. Rxd8+ Kf7 21. Rb1 Ra7 22. Bg5 Be6 {
Pribyl,J (2445)-Rehn,J/Hradec Kralove 1997/EXT 1998/1/2 (44)}) ({RR} 8. Bf4 Ba5
9. Nd6+ Kf8 10. Nxc8 Rxc8 11. Bd2 d4 12. Nb5 Nb4 13. Na3 d3 14. c3 Qe7+ 15. Be3
Rd8 16. Qd2 f5 17. O-O-O Nxa2+ 18. Kb1 Nxc3+ 19. bxc3 Qxa3 20. Qb2 {
1/2 Brunings,C-Kwan,K/Teeside 1973/EXT 2001}) 8... Be6 9. Bf4 Rc8 10. a3 Be7
11. Nc7+ Rxc7 12. Bxc7 Qxc7 13. O-O-O Nf6 14. Nb5 Qb6 15. Qd2 Nd7 16. Be2 Bf6
17. g4 h6 18. h4 a6 19. Nc3 Qc7 20. f4 Be7 21. f5 Bd6 22. Rhf1 d4 23. fxe6 fxe6
24. Ne4 Be7 25. g5 h5 26. Qf4 Nde5 27. Ng3 Bd6 28. Qe4 g6 29. Rf6 Qe7 30. Qg2
Nd7 31. Ne4 Be5 32. Rxg6 Qf7 33. Bd3 Kd8 34. Nf6 Nxf6 35. gxf6 Bf4+ 36. Kb1 Bh6
37. Qe4 e5 38. Rdg1 Bf4 39. Rg7 Qxf6 40. Qd5+ Ke8 41. Bg6+ 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "3.5"]
[White "Angelov, Georgi G."]
[Black "Ignatov, Bojidar"]
[Result "0-1"]
[ECO "E38"]
[WhiteElo "1584"]
[BlackElo "1806"]
[PlyCount "38"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. Nf3 c5 6. e3 d5 7. dxc5 Nbd7 ({RR} 
7... Nc6 8. a3 Bxc3+ 9. Qxc3 Ne4 10. Qc2 Qa5+ 11. Nd2 ({RR} 11. Bd2 Qxc5 12. b4
Qe7 13. Bd3 f5 14. O-O Bd7 15. b5 Nxd2 16. Nxd2 Ne5 17. Be2 Rac8 18. Qb3 Qd6
19. cxd5 exd5 20. Nf3 Be6 21. Rfd1 Rc5 22. Nd4 Rfc8 23. Qb4 Qd7 24. a4 Bf7 25.
h3 Ng6 {Nikitenko,S (1888)-Aleshin,N (2263)/Nalchik 2016/CBM 172 Extra/0-1 (33)
}) 11... Nxd2 12. Bxd2 Qxc5 13. b4 Qb6 14. c5 Qc7 15. Be2 a6 16. O-O e5 17. a4
Ne7 18. Qb2 Be6 19. Rac1 Ng6 20. Bc3 f6 21. Rfd1 Rfd8 22. Bd3 {
Kempinski,R (2561)-Bichsel,W (2334)/Bad Zwesten 2004/CBM 098 Extra/1-0 (62)})
8. Bd2 Nxc5 9. cxd5 exd5 $146 ({RR} 9... Bd7 10. dxe6 Bxe6 11. Be2 Rc8 12. O-O
Nce4 13. Be1 Qa5 14. Nd4 Nxc3 15. bxc3 Bxc3 16. Bxc3 Qxc3 17. Qa4 a6 18. Nxe6
fxe6 19. Bf3 Nd5 20. Rad1 Qe5 21. Bxd5 exd5 22. Qb3 Rcd8 23. Qxb7 Rf6 24. Rd4 {
Loureiro,L (2335)-Amador,S/Rio de Janeiro 1994/EXT 2006/1-0 (41)}) 10. Be2 Bg4
11. O-O Rc8 12. Nd4 (12. Rfc1 $142) 12... Bxe2 13. Ndxe2 Nce4 14. Rfd1 (14. Qd1
$142 $11) 14... Qd6 15. Be1 Ng4 16. Ng3 $2 (16. Nf4 $142 Nxc3 17. bxc3 Bc5 18.
g3 Qh6 19. h3 Nf6 20. h4 $14) 16... Qh6 (16... Nxg3 $142 17. hxg3 Qh6 18. Qf5
Qh2+ 19. Kf1 h5 $40) 17. Rxd5 $4 Qxh2+ 18. Kf1 Nxg3+ 19. fxg3 Nxe3+ 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "3.6"]
[White "Kostov, Nikolay"]
[Black "Georgiev, Nikolay Zh."]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1680"]
[BlackElo "1560"]
[PlyCount "107"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. e3 Nf6 3. Bd3 Bg4 4. f3 Bh5 5. Nh3 ({RR} 5. c4 c6 6. Nc3 e6 7. Nge2
Bg6 8. b3 Nbd7 9. Bb2 Bxd3 10. Qxd3 dxc4 11. Qxc4 Nd5 12. Kf2 Nb4 13. Nf4 e5
14. dxe5 Nxe5 15. Qe4 Qd2+ 16. Nce2 Qxb2 17. Rhb1 Qa3 18. Qxe5+ Be7 19. Qxg7
O-O-O {Wall,G (2356)-Olbrich,M (2302)/Germany 2001/CBM 088 Extra/1-0}) 5... Bg6
({RR} 5... Ne4 6. Nf4 g6 7. Nxh5 gxh5 8. fxe4 dxe4 9. Bxe4 Rg8 10. Bxb7 Rxg2
11. Bxg2 c6 12. Qxh5 {1-0 Punchev,I (1762)-Angelov,T/Sofia 2016/CBM 173 Extra})
6. Nf4 Bxd3 7. Qxd3 a6 $146 ({RR} 7... Nc6 8. c3 a6 9. Qe2 e5 10. dxe5 Nxe5 11.
Nd2 Bd6 12. e4 dxe4 13. Nxe4 Nxe4 14. Qxe4 O-O 15. O-O Nc6 16. Nh3 Re8 17. Qc2
Qh4 18. Bg5 Qc4 19. b3 Nd4 20. Qxh7+ Kxh7 21. bxc4 Ne2+ 22. Kh1 {
Trifunovic,D (2019)-Paulic,B (2223)/Belgrade 2005/CBM 107 Extra/0-1 (39)}) 8.
O-O e6 9. c4 dxc4 10. Qxc4 Be7 11. Nd3 Nbd7 12. Nc3 O-O 13. f4 b5 14. Qc6 Nb6
15. Qf3 b4 16. Ne4 Nxe4 17. Qxe4 Qd5 18. Qxd5 exd5 19. b3 Nd7 20. Bd2 Rfb8 21.
Rac1 Bd6 22. Ne5 Nf6 23. Rc2 a5 24. Rfc1 Ne4 25. Nd3 a4 26. bxa4 Rxa4 27. Nf2
Nxf2 28. Kxf2 Rba8 29. Kf3 Rxa2 30. Rxa2 Rxa2 31. Bxb4 Bxb4 32. Rxc7 f6 33. Rb7
Bd2 34. f5 h5 35. Rb3 Ra7 36. Rb2 Bc3 37. Rb3 Be1 38. Rb1 Ba5 39. Rb5 Bd2 40.
Rb2 Bc3 41. Rb3 Rc7 42. Rb5 Rd7 43. g3 Bd2 44. Rb2 Ba5 45. Rb5 Bd8 46. Rb8 Kh7
47. Rb5 Kh6 48. h4 Kh7 49. Rc5 Kg8 50. Rb5 Kf7 51. Kf4 Ke7 52. Kf3 Bc7 53. Rb1
Kf7 54. Ra1 1/2-1/2

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.15"]
[Round "3.9"]
[White "Simov, Zahari"]
[Black "Angelov, Toma"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1499"]
[BlackElo "1287"]
[PlyCount "25"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Bc4 Nf6 3. d3 d6 4. h3 d5 5. exd5 Nxd5 6. Nf3 Bb4+ 7. c3 Bc5 8. O-O
Qd6 9. b4 Qg6 10. bxc5 Bxh3 11. Nh4 Qe6 12. Bxd5 Qxd5 13. gxh3 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "4.1"]
[White "Vassilev, Martin"]
[Black "Nikolov, Petko"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2040"]
[BlackElo "1867"]
[PlyCount "104"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. h3 e6 ({RR} 5... c6 6. Nf3 Bf5 7.
g4 Be6 8. Bg2 g6 9. Ne5 h5 10. g5 Nd5 11. Ne4 Nd7 12. f4 Bg7 13. Qe2 b5 14. c3
Bxe5 15. fxe5 Qb6 16. a4 a6 17. O-O b4 18. Kh1 bxc3 19. bxc3 O-O 20. Qd2 {
Brenjo,S (2491)-Vukovic,Z (2470)/Vrnjacka Banja 1999/EXT 2000/0-1 (31)}) 6. Nf3
Be7 7. Bc4 ({RR} 7. Bg5 a6 8. Bd3 O-O 9. Qe2 Nc6 10. Rd1 Nb4 11. O-O Nxd3 12.
Rxd3 c6 13. Rfd1 Nd5 14. Nxd5 cxd5 15. Bxe7 Qxe7 16. Rc3 Qd8 17. Ne5 Bd7 18.
Rg3 f6 19. Nd3 Qc7 20. Nc5 Rae8 21. Rb3 Bc8 {
Hamalainen,S (2215)-Torkkola,H (2205)/Finland 2016/EXT 2017/1/2 (50)}) 7...
Nbd7 $146 ({RR} 7... O-O 8. O-O ({RR} 8. Bf4 c6 9. O-O b5 10. Bd3 Bb7 11. Qe2
Nbd7 12. Ne4 Nxe4 13. Qxe4 Nf6 14. Qe2 a6 15. Rfd1 Qb6 16. Ne5 Rfd8 17. c3 c5
18. dxc5 Qxc5 19. Ng4 Qc6 20. Nxf6+ Bxf6 21. Qf1 e5 22. Be3 e4 {
Schalck,C (1788)-Pluemer,D (2185)/Berlin 2008/CBM 126 Extra/1/2 (41)}) 8... c6
9. Re1 Nbd7 10. Be3 Nb6 11. Bd3 Nbd5 12. Ne4 b6 13. Ne5 Bb7 14. Bg5 Qc7 15.
Bxf6 Nxf6 16. Qe2 Nxe4 17. Qxe4 g6 18. Qf4 Bd6 19. Qf6 c5 20. c3 Rad8 21. Re3
cxd4 22. cxd4 {Kocsis,G (2285)-Kovacs,L (2183)/Hungary 1999/EXT 2001/0-1}) 8.
O-O O-O 9. Qe2 Nb6 10. Bb3 Nbd5 11. Nxd5 exd5 12. Ne5 Ne4 13. Bf4 c6 14. Rad1
Bd6 15. c4 Be6 16. cxd5 cxd5 17. Nd3 Re8 18. Bxd6 Qxd6 19. Qf3 Re7 20. Qf4 Qxf4
21. Nxf4 Nf6 22. Rc1 Rd8 23. Rfe1 Kf8 24. f3 Bf5 25. Rxe7 Kxe7 26. Rc7+ Rd7 27.
Nxd5+ Nxd5 28. Rxd7+ Bxd7 29. Bxd5 b6 30. Kf2 f6 31. h4 Kd6 32. Bb3 Bf5 33. Ke3
h6 34. Kf4 Bd7 35. Bc4 Ke7 36. b4 Kd6 37. Ke4 Bc8 38. Bf7 Bd7 39. d5 Ba4 40.
Kd4 Bb5 41. g3 Be2 42. f4 Bf3 43. Be6 Bg2 44. g4 Bf3 45. g5 hxg5 46. hxg5 Bg2
47. a4 Bf3 48. a5 Bg2 49. axb6 axb6 50. gxf6 gxf6 51. Kc4 Bf1+ 52. Kd4 Bg2
1/2-1/2

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "4.2"]
[White "Andreev, Dobrotich"]
[Black "Kolev, Nikola Vl."]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "1907"]
[BlackElo "1913"]
[PlyCount "78"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nc3 Nc6 6. Be3 Nf6 7. Qd2 O-O 8.
f3 d5 9. O-O-O dxe4 10. Nxc6 Qxd2+ 11. Rxd2 bxc6 12. Nxe4 Nxe4 ({RR} 12... Nd5
13. Bg5 f6 14. Bc4 e6 15. Bh4 Bh6 {
0-1 Puelma,R (2250)-Barria Zuniga,D (2345)/Santiago de Chile 1994/EXT 2001})
13. fxe4 Be6 14. c4 $146 ({RR} 14. Kb1 Rfb8 15. b3 a5 16. Bd4 a4 17. Bxg7 Kxg7
18. Kb2 Rb4 19. Bd3 c5 20. Kc3 Kf6 21. Rf1+ Ke5 22. Bc4 axb3 23. Bxe6 Kxe6 24.
axb3 Rxe4 25. Rfd1 f5 26. Rd5 Rc8 27. R1d2 h5 28. R5d3 g5 {
Gonzalez Lopez,N (2100)-Cofre Archibold,N (2215)/Guatape 2016/EXT 2017/0-1 (40)
}) ({RR} 14. Be2 Rab8 15. b3 a5 16. Rd3 a4 17. Bd4 Bh6+ 18. Kb2 axb3 19. cxb3
c5 20. Bxc5 Bc4 21. Bxe7 Bg7+ 22. Kb1 Bxd3+ 23. Bxd3 Rfe8 24. Bc5 Rbd8 25. Rd1
Rd7 26. b4 Red8 27. Kc2 Bd4 28. Bb5 Rc7 {
Niks,Y (1911)-Golovchanskaya,A (1648)/Moscow 2015/CBM 164 Extra/1-0 (52)}) ({RR
} 14. Bc5 Bh6 15. Bxe7 Rfe8 16. Bf6 Bxa2 17. e5 Bd5 18. h4 Bxd2+ 19. Kxd2 h5
20. c4 Be6 21. c5 Rab8 22. Kc3 Rb3+ 23. Kc2 Reb8 24. Be7 Rxb2+ 25. Kc3 R8b3+
26. Kd4 Bd5 27. Bg5 Rb1 28. Bc4 Rxh1 {
Vescovi Filho,G-De Carvalho Machado,F (1792)/Sao Paulo 2014/EXT 2016/0-1 (42)})
14... Rfd8 15. Rxd8+ Rxd8 16. Be2 Bd4 17. Bxd4 Rxd4 18. b3 Kg7 19. Rd1 Rxd1+
20. Kxd1 c5 21. e5 f6 22. Kd2 fxe5 23. Kc3 a5 24. Bf3 Kf6 25. a3 Kf5 26. b4
axb4+ 27. axb4 cxb4+ 28. Kxb4 e4 29. Be2 Kf4 30. c5 Ke3 31. Bc4 Bf5 32. h3 h5
33. Bd5 h4 34. Kc3 Kf2 35. Kd4 e3 36. Bf3 e2 37. Bxe2 Kxe2 38. Ke5 Kf2 39. Kf4
Kxg2 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "4.5"]
[White "Stoyanov, Plamen"]
[Black "Kostov, Nikolay"]
[Result "1/2-1/2"]
[ECO "A60"]
[WhiteElo "1427"]
[BlackElo "1680"]
[PlyCount "30"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 e6 2. Nf3 Nf6 3. c4 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 a6 7. a4 Be7 ({RR} 
7... Qe7 8. Bf4 Ne4 9. Nd2 Nxd2 10. Qxd2 Bf5 11. e4 Bxe4 12. O-O-O f5 13. f3 b5
14. axb5 axb5 15. Bxb5+ Kf7 16. fxe4 fxe4 17. Rhf1 Kg8 18. Kb1 Na6 19. Qe2 Nb4
20. Qxe4 g6 21. Qe6+ Kg7 22. Bxd6 {
Riazantsev,A (2705)-Bednarek,S (2314)/Warsaw 2012/EXT 2014/1-0}) ({RR} 7... Bf5
8. Bg5 h6 9. Bxf6 Qxf6 10. e4 Bh7 11. Bd3 Nd7 12. O-O g5 13. e5 dxe5 14. Bxh7
Rxh7 15. Re1 Bd6 16. Ne4 Qg6 17. Nfd2 f5 18. Nxd6+ Qxd6 19. Nc4 Qf6 20. d6 Kf8
21. Qd5 e4 22. Qxb7 {
Latypov,R (1809)-Zemlyanov,N (2069)/Tuymazy 2016/CBM 170 Extra/1/2 (91)}) 8.
Nd2 b6 9. e4 $146 ({RR} 9. Nc4 Nbd7 10. Bf4 Nf8 11. e3 Ng6 12. Bg3 O-O 13. Bd3
Rb8 14. O-O Ne8 15. e4 Bf6 16. Re1 Bd4 17. e5 b5 18. axb5 axb5 19. Na5 Nxe5 20.
Bxe5 dxe5 21. Nc6 Qh4 22. Qc2 Rb6 23. Nxb5 Nf6 {
Mezentsev,I (2117)-Grebenschikov,V (2212)/Pavlodar 2015/EXT 2017/1-0}) 9... Bb7
10. Be2 Nbd7 11. Nc4 h6 12. Bf4 Qb8 13. h3 O-O 14. O-O Rd8 15. Qd3 Bc8 1/2-1/2

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "4.7"]
[White "Georgiev, Nikolay Zh."]
[Black "Mladenov, Andrey"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1560"]
[BlackElo "1566"]
[PlyCount "65"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nc3 Nc6 3. Bc4 Nf6 4. a3 ({RR} 4. d3 h6 ({RR} 4... g6 5. Nf3 Bg7 6.
O-O O-O 7. Be3 d6 8. e5 Ng4 9. exd6 exd6 10. h3 Nge5 11. Re1 a6 12. Bf4 b5 13.
Bd5 Bb7 14. d4 Nxf3+ 15. Qxf3 Nxd4 16. Qg3 Bxd5 17. Rac1 Nf5 18. Qd3 Bc4 19.
Qd2 {Gyselinck,M (966)-Decruyenaere,R (1507)/Blankenberge 2015/CBM 166 Extra/
0-1 (43)}) 5. f4 d6 6. Nf3 e6 7. Bb5 Be7 8. Bxc6+ bxc6 9. e5 Nd7 10. exd6 Bxd6
11. Ne4 Be7 12. O-O O-O 13. Qe2 f5 14. Ned2 Nf6 15. Ne5 Qe8 16. b3 Bd6 17. Bb2
Nd7 18. Nec4 Bc7 {
Belli Pino,M (2403)-Castillo,C/Huacho 2004/CBM 102 Extra/1-0 (66)}) 4... g6 5.
d3 Bg7 6. Bg5 $146 ({RR} 6. Nf3 O-O 7. O-O ({RR} 7. Be3 d6 8. Qd2 a6 9. Bh6 b5
10. Bxg7 Kxg7 11. Bd5 Bb7 12. Bxc6 Bxc6 13. Ne2 Re8 14. Ng3 e6 15. Qf4 Rc8 16.
O-O Bb7 17. c4 bxc4 18. dxc4 Qb6 19. Rab1 Qc6 20. Rfe1 e5 21. Qg5 h6 {
Tran,T-Nguyen,H/Dong Thap 2000/EXT 2004/0-1 (51)}) 7... d6 8. h3 Bd7 9. Bd2 a6
10. Qc1 b5 11. Ba2 Qc7 12. Bh6 Rab8 13. Bxg7 Kxg7 14. Nd5 Nxd5 15. Bxd5 e6 16.
Bxc6 Bxc6 17. c3 Qb7 18. Nh2 d5 19. Ng4 f6 20. exd5 Bxd5 {
Buchner,G (1499)-Cortolezis,L (1523)/Deutschlandsberg 2006/EXT 2009/1/2}) ({RR
} 6. Nge2 d6 7. O-O a6 8. f4 O-O 9. Ng3 Ng4 10. h3 Bd4+ 11. Kh1 Nf2+ 12. Rxf2
Bxf2 13. Qf3 Bd4 14. f5 Ne5 15. Qf1 Nxc4 16. dxc4 e6 17. Bh6 Bg7 18. Bxg7 Kxg7
19. Qd3 Qg5 20. Rf1 f6 {
Volpato,A (1779)-Da Silva,M (1839)/Cuiaba 2014/CBM 160 Extra/0-1 (36)}) 6...
O-O 7. Qd2 a6 8. f3 b5 9. Ba2 d6 10. g4 Nd4 11. h4 h5 12. gxh5 Nxh5 13. Nce2
Nxe2 14. Nxe2 Bxb2 15. Kf2 Bxa1 16. Rxa1 Bb7 17. Nf4 Nxf4 18. Qxf4 Qa5 19. Bxe7
Qc3 20. Bf6 Qxc2+ 21. Ke3 Kh7 22. h5 g5 23. Qxg5 Rg8 24. Qf5+ Kh6 25. Bg5+ Rxg5
26. Qf6+ Kh7 27. Qxg5 Rg8 28. Qf5+ Kh8 29. Qf6+ Kh7 30. Qxf7+ Rg7 31. Qf5+ Kh8
32. h6 Rg2 33. Qf6+ 1/2-1/2

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "4.9"]
[White "Punchev, Ivan"]
[Black "Nenchev, Georgi"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1684"]
[BlackElo "1450"]
[PlyCount "59"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. e3 e6 3. Bd3 d5 4. f4 c5 5. c3 a6 6. Nf3 b5 7. O-O Qc7 8. Ng5 h6
9. Nf3 Nc6 10. Nbd2 c4 11. Bc2 Be7 12. Ne5 Bd6 13. Ndf3 Bd7 14. Nxf7 Bxf4 15.
Nxh8 Bd6 16. Bg6+ Ke7 17. Nf7 Rf8 18. Nxd6 Qxd6 19. Ne5 Qc7 20. b3 Qa5 21. b4
Qb6 22. Qf3 Nh7 23. Qg4 Rxf1+ 24. Kxf1 Nf6 25. Qh4 Kd8 26. e4 Nxb4 27. a3 Nc2
28. Ra2 Nxd4 29. Be3 Qa5 30. Bxd4 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "5.1"]
[White "Kolev, Nikola Vl."]
[Black "Vassilev, Martin"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "1913"]
[BlackElo "2040"]
[PlyCount "81"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 Nxc3 7. bxc3 O-O 8.
Rb1 c5 9. O-O Nd7 10. c4 Qc7 ({RR} 10... Rb8 11. d3 b6 12. Bb2 Bxb2 13. Rxb2
Bb7 14. Qd2 Qc7 15. Qf4 Qxf4 16. gxf4 Bxf3 17. Bxf3 Rfc8 18. Kg2 e6 19. a4 a5
20. Rfb1 Kf8 21. Kf1 Ke7 22. Ke1 Kd6 23. Kd2 Kc7 24. e3 h6 25. h4 {
Seirawan,Y (2643)-Robson,R (2614)/Saint Louis 2012/CBM 149/1-0 (49)}) ({RR} 
10... e5 11. d3 Rb8 12. Ng5 b6 13. Ne4 Bb7 14. Nc3 Bxg2 15. Kxg2 f5 16. e4 f4
17. f3 h5 18. Qa4 Nf6 19. Nd5 Rf7 20. Bb2 Nxd5 21. exd5 Qg5 22. Qc2 Rbf8 23.
Qe2 Rf5 24. Rbe1 Kh7 25. Bc1 {
Yuan,Q (2359)-Pascua,H (2447)/Al Ain 2015/CBM 168/1-0 (73)}) 11. Bb2 Rb8 $146 (
{RR} 11... Bxb2 12. Rxb2 b6 13. Qc2 Bb7 14. Qc3 Rad8 15. a4 Nb8 16. a5 Bxf3 17.
Bxf3 Na6 18. Rb5 Rd6 19. Ra1 Nb4 20. axb6 axb6 21. d4 Rfd8 22. e3 e5 23. dxc5
bxc5 24. Rb7 Rd1+ 25. Kg2 Qc8 26. Raa7 {
Wendt,J (2362)-Neerforth,P (2246)/Germany 2013/EXT 2015/1-0 (68)}) ({RR} 11...
e5 12. d3 Rb8 13. Ne1 ({RR} 13. Nd2 Nf6 14. Bc3 b6 15. Qc2 Bb7 16. Bxb7 Rxb7
17. a4 Re8 18. a5 Qd7 19. Rfd1 Qh3 20. Qa4 Rbe7 21. axb6 axb6 22. Rxb6 Ng4 23.
Nf1 e4 24. Bxg7 exd3 25. Rxd3 Kxg7 26. Qa1+ f6 27. Rf3 Rxe2 {
Haag,E (2330)-Kovacs,Z (2320)/Hungary 2005/EXT 2007/1/2 (32)}) 13... b6 14. Nc2
Bb7 15. Bxb7 Qxb7 16. Ne3 Rfe8 17. f3 Nf6 18. Bc3 Rbd8 19. Qc2 Bh6 20. Ng2 {
1/2 Trinh,B (2046)-Masse,H (2178)/Montreal 2006/EXT 2007}) 12. Bxg7 Kxg7 13. d3
a6 14. Qa4 Nf6 15. Rb2 b5 16. Qc2 b4 17. Rfb1 Bd7 18. Qc1 a5 19. Qe3 e6 20. Ne5
Rfc8 21. g4 Ne8 22. g5 f6 23. Ng4 fxg5 24. Qxg5 Qd8 25. Qe5+ Nf6 26. d4 h5 27.
Ne3 cxd4 28. Qxd4 Qc7 29. Rc1 e5 30. Qh4 Qc5 31. Rd2 Be6 32. Bh3 Bxh3 33. Qxh3
a4 34. Qg3 Kh6 35. Nd5 Ne4 36. Qd3 Qxf2+ 37. Kh1 Nxd2 (37... Rxc4 $1 38. Qxc4
Nxd2 $19) 38. Ne7 Rg8 39. Nxg8+ Rxg8 40. Qxd2+ Kh7 41. c5 1/2-1/2

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "5.4"]
[White "Kostov, Nikolay"]
[Black "Andreev, Dobrotich"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "1680"]
[BlackElo "1907"]
[PlyCount "75"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bf4 c6 5. e3 Bb4+ 6. Nbd2 Ne4 7. a3 Bd6 8. Bxd6
({RR} 8. Bd3 Nxd2 9. Qxd2 Bxf4 10. exf4 f5 11. O-O O-O 12. Rfe1 Na6 13. cxd5
cxd5 14. Bxa6 bxa6 15. Rac1 Bd7 16. Ng5 Qf6 17. Rc7 Rad8 18. Qb4 Rfe8 19. h3 h6
20. Nf3 Rb8 21. Qd2 Bb5 22. Ne5 Rec8 {
Vilela,H (2031)-Almeida,L (1625)/Belem 2016/CBM 171 Extra/1-0}) 8... Nxd6 9.
Bd3 $146 ({RR} 9. Qc2 Nd7 10. Bd3 dxc4 11. Nxc4 Nxc4 12. Qxc4 O-O 13. O-O Nf6
14. Rad1 Qd5 15. Qc2 g6 16. Ne5 Qd8 17. Qe2 Kg7 18. f4 a5 19. Bb1 Qc7 20. Rf3
b6 21. Rc1 Bb7 22. Rg3 a4 23. h4 c5 {
Menjour,M-Fauchart,F (1639)/La Fere 2012/CBM 149 Extra/1/2 (33)}) 9... Nd7 10.
c5 Nf5 11. Qc2 Qf6 12. O-O-O g6 13. g4 Ng7 14. Qc3 b6 15. cxb6 c5 16. Bb5 axb6
17. dxc5 Qxc3+ 18. bxc3 bxc5 19. a4 Ke7 20. e4 Nb6 21. exd5 Nxd5 22. Kc2 Bb7
23. Rhe1 h5 24. h3 hxg4 25. hxg4 Ne8 26. Ne5 Nec7 27. c4 Nxb5 28. axb5 Nb4+ 29.
Kb3 Ra2 30. Nb1 Rh3+ 31. Re3 Rxe3+ 32. fxe3 Be4 33. Nc6+ Bxc6 34. bxc6 Ra7 35.
Nc3 Nxc6 36. Ne4 Ne5 37. g5 Rb7+ 38. Kc3 1/2-1/2

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "5.5"]
[White "Georgiev, Nikolay Zh."]
[Black "Punchev, Ivan"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1560"]
[BlackElo "1684"]
[PlyCount "100"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nc3 e5 3. Bc4 Nf6 4. d3 Nc6 ({RR} 4... a6 5. f4 exf4 6. Bxf4 d6 7.
Nf3 b5 8. Bb3 h6 9. O-O Be7 10. Qe1 Nbd7 11. e5 dxe5 12. Nxe5 Nxe5 13. Qxe5 O-O
14. a4 Bb7 15. axb5 axb5 16. Rxa8 Bxa8 17. Nxb5 Ne8 18. Bc4 Bc6 19. Nc3 {
Oliveira,C (1717)-Carneiro,P (1601)/Curitiba 2016/CBM 170 Extra/1/2}) ({RR} 
4... h6 5. f4 d6 6. Nf3 Bg4 7. fxe5 dxe5 8. Bxf7+ Kxf7 9. Nxe5+ Ke6 10. Nxg4 h5
11. Nxf6 Qxf6 12. Nd5 Qd8 13. Bf4 Na6 14. Qf3 Kd7 15. O-O g5 16. Be5 Rh6 17.
Qf7+ Kc6 18. Bg7 Bxg7 19. Qxg7 {
Gelemerov,Y (2027)-Punchev,I (1762)/Sofia 2016/CBM 173 Extra/1-0}) 5. f4 d6 6.
Nf3 ({RR} 6. f5 a6 7. Bg5 Be7 8. Nf3 Nd7 9. Bxe7 Qxe7 10. Qd2 Nb6 11. O-O f6
12. a4 Nd4 13. a5 Nxc4 14. dxc4 O-O 15. Nd5 Qf7 16. Nb6 Rb8 17. c3 Nb3 18. Qxd6
Bxf5 19. Rad1 Bxe4 20. Ng5 Qg6 {
Tiviakov,S (2656)-Padeiro,J (2338)/Porto 2013/CBM 156 Extra/1-0 (32)}) 6... Bd7
$146 ({RR} 6... Bg4 7. h3 Bxf3 8. Qxf3 Nd4 9. Qf2 Qa5 ({RR} 9... Be7 10. O-O
O-O 11. Nd5 Nxd5 12. Bxd5 Bh4 13. Qd2 exf4 14. c3 Ne6 15. Bxb7 Rb8 16. Bd5 Bg3
17. Qe2 Qh4 18. b3 g5 19. Bd2 h5 20. Be1 Kg7 21. Bxg3 fxg3 22. Rf5 Nf4 23. Qe3
Rbe8 24. Qd2 {
Moreno Mateos,J-Gonzalez Marquez,J/Binissalem 2003/EXT 2004/1-0 (42)}) 10. O-O
b5 11. fxe5 dxe5 12. Bg5 Be7 13. Bb3 Rd8 14. Bxf6 Bxf6 15. Nd5 Rd6 16. c3 Ne6
17. Nxf6+ gxf6 18. Qxf6 Rf8 19. Qxe5 Qb6 20. Bd5 Qc7 21. Rf6 {
Liu,Y (1829)-Spitzer,E/Germany 2011/EXT 2012/1-0 (32)}) ({RR} 6... Be7 7. O-O
a6 8. a4 O-O 9. f5 Bd7 10. h3 Na5 11. Ba2 b5 12. axb5 axb5 13. g4 b4 14. Nd5
Nxd5 15. Bxd5 Bc6 16. Bxc6 Nxc6 17. Be3 Qd7 18. Kh2 d5 19. g5 Rxa1 20. Qxa1 c4
21. Qa4 {Costantini,L (2047)-Santurbano,M (1743)/Bratto 2002/EXT 2003/0-1}) 7.
Ng5 Bg4 8. Qd2 Be6 9. Nxe6 fxe6 10. Bxe6 Qe7 11. f5 Nd4 12. Bd5 Nxd5 13. Nxd5
Qf7 14. c3 Nc6 15. O-O O-O-O 16. Qg5 Ne7 17. c4 Nxd5 18. cxd5 Be7 19. Qg4 Rdf8
20. Be3 Kb8 21. Qe2 Qf6 22. Qd2 h5 23. Kh1 Rf7 24. Rf3 h4 25. Raf1 Rhf8 26. Qa5
Bd8 27. Qa4 Rc7 28. Rc1 Qf7 29. b4 Qh5 30. h3 g5 31. bxc5 g4 32. hxg4 Qxg4 33.
Qd1 Rg8 34. Qf1 Rcg7 35. Rc2 Rc7 36. c6 Rh8 37. Rh3 Rg8 38. Qg1 b6 39. a4 Rcg7
40. a5 bxa5 41. Rb2+ Ka8 42. Rh2 Bg5 43. Bxg5 Qxg5 44. Qb1 Rc7 45. Rb7 Rgc8 46.
Rb5 a4 47. Ra5 Rb8 48. Qc2 Qe3 49. Rh3 Qe1+ 50. Kh2 Qxa5 0-1

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "5.6"]
[White "Angelov, Georgi G."]
[Black "Stoyanov, Plamen"]
[Result "1-0"]
[ECO "E82"]
[WhiteElo "1584"]
[BlackElo "1427"]
[PlyCount "29"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 b6 7. Qd2 c5 8. d5 e6
9. dxe6 fxe6 ({RR} 9... Bxe6 10. O-O-O Nc6 11. Be2 ({RR} 11. Qxd6 Qe8 12. Nd5
Bxd5 13. cxd5 Nb4 14. a3 Rd8 15. Qf4 Nbxd5 16. exd5 Nxd5 17. Rxd5 Rxd5 18. Bc4
Rf5 19. Qe4 Re5 20. Qc2 Rxe3 21. Ne2 b5 22. Bd3 c4 23. Be4 Rb3 24. Nc3 Bxc3 25.
bxc3 Qe5 {Kreiling,C (2114)-Graf,G (2214)/Germany 2013/EXT 2014/0-1}) 11... a6
12. Nh3 b5 13. Nf4 Nd4 14. Nxe6 fxe6 15. cxb5 axb5 16. Nxb5 Rxa2 17. Nxd4 cxd4
18. Bxd4 Qa8 19. Bc4 Rc8 20. Qc3 d5 21. Bxa2 Rxc3+ 22. Bxc3 Qxa2 23. Rhe1 Kf7
24. Kc2 {Volodin,A (2422)-Piorun,K (2499)/Chotowa 2010/CBM 137 Extra/0-1}) 10.
O-O-O Ne8 11. Bf4 $146 ({RR} 11. Nb5 Nc6 ({RR} 11... d5 12. exd5 exd5 13. Qxd5+
Qxd5 14. cxd5 a6 15. Na3 Nd7 16. Ne2 Nd6 17. Ng3 b5 18. b3 b4 19. Nc4 Nxc4 20.
Bxc4 Ne5 21. Bxc5 Rd8 22. Bxb4 Nxc4 23. bxc4 a5 24. Ba3 Bd7 25. Bb2 Bf8 26. Ne4
{Dymek,H (1501)-Schmidt,M (1268)/Moehnesee 2005/CBM 108 Extra/1/2 (44)}) 12.
Nxd6 Nxd6 13. Qxd6 Qf6 14. Qd2 Rd8 15. Qc2 Rxd1+ 16. Kxd1 Ba6 17. Kc1 Rd8 18.
Nh3 Nd4 19. Bg5 Qe5 20. f4 Qd6 21. e5 Qd7 22. Qd1 Nb3+ 23. Qxb3 Qd2+ 24. Kb1
Qe1+ 25. Kc2 Qd1+ {Guerrero,M-Rodriguez Vargas,O (2425)/Tel Aviv 1964/MCD/0-1})
({RR} 11. h4 Nc6 12. h5 Ne5 13. hxg6 Nxg6 14. Nh3 Qf6 15. Nf2 Ne5 16. f4 Nc6
17. Bd3 e5 18. f5 Qf7 19. Ng4 Nf6 20. Nh6+ Bxh6 21. Bxh6 Bb7 22. g4 Nd7 23. g5
Nd4 24. Rh3 Qe7 25. Rg1 Rf7 {
Mjasoedov,G (2172)-Onischuk,V (2411)/Kiev 2004/EXT 2008/1-0 (32)}) 11... e5 12.
Bg5 Bf6 13. Qd5+ Rf7 14. Bxf6 Qxf6 15. Qxa8 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "5.10"]
[White "Nenchev, Georgi"]
[Black "Dobrev, Asen"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "1450"]
[BlackElo "1407"]
[PlyCount "69"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 d5 2. c4 Nf6 3. d4 e6 4. e3 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 O-O 7. Be2 dxc4 (
{RR} 7... Qe7 8. O-O c5 9. dxc5 Qxc5 10. cxd5 exd5 11. Nb3 Qb6 12. Qd4 Nc6 13.
Qxb6 axb6 14. Nfd4 Bd7 15. a3 Rfc8 16. Rac1 Na5 17. Nxa5 bxa5 18. f3 Kf8 19.
Kf2 Ke7 20. Bd3 g6 21. Ke2 Rxc1 22. Rxc1 {
Gomez,J (2526)-Antonio,R (2517)/Manila 2014/CBM 161 Extra/1/2 (31)}) ({RR} 7...
b6 8. O-O Bb7 9. Qc2 Nbd7 10. b4 Rc8 11. Rac1 c5 12. Qb2 Ba8 13. Qa3 Rc7 14.
bxc5 bxc5 15. cxd5 exd5 16. dxc5 Qe7 17. Nb3 Ne4 18. Nfd4 Rfc8 19. Rc2 Qf6 20.
Ba6 Rb8 21. f3 Nexc5 22. Nxc5 {
Schoeman,E (1366)-Staal,M (1172)/Cape Town 2016/CBM 170 Extra/1-0 (59)}) 8.
Bxc4 a6 $146 ({RR} 8... Nbd7 9. O-O c5 10. Qc2 cxd4 11. exd4 a6 12. a4 Nb6 13.
Bb3 Bd7 14. Ne4 Bc6 15. Nxf6+ Qxf6 16. Ne5 Rfc8 17. Qe2 Qg5 18. f4 Qd8 19. Qf2
Bd5 20. Bc2 Rc7 21. f5 Rac8 22. Bd3 Nc4 23. Nxc4 {
Hugger,M (1787)-Marx,R (1558)/Passau 2000/CBM 076 Extra/1-0 (39)}) 9. O-O b5
10. Be2 Nbd7 11. a4 Bb7 12. axb5 axb5 13. Bxb5 c5 14. Rxa8 Qxa8 15. Qa1 cxd4
16. exd4 Rb8 17. Bxd7 Nxd7 18. Qxa8 Bxa8 19. Ra1 Bxf3 20. Nxf3 Rxb2 21. g3 h6
22. Ra7 Nf8 23. Ne5 f6 24. Nd7 Rd2 25. Ra8 Kf7 26. Nxf8 Rxd4 27. Kg2 e5 28. h4
e4 29. h5 Rd5 30. g4 f5 31. Kg3 Rd3+ 32. Kf4 Rf3+ 33. Ke5 fxg4 34. Ng6 Rxf2 35.
Rf8# 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "6.1"]
[White "Vassilev, Martin"]
[Black "Ruschukov, Boyan"]
[Result "1/2-1/2"]
[ECO "A43"]
[WhiteElo "2040"]
[BlackElo "1825"]
[PlyCount "79"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 Na6 7. e4 c5 8. d5 b5
({RR} 8... Nc7 9. a4 b6 10. Re1 Nd7 11. Bg5 h6 12. Bf4 Bb7 13. Qd2 Kh7 14. Rad1
Ne5 15. Qc1 a6 16. Nxe5 dxe5 17. Be3 a5 18. Nb1 Ne8 19. Na3 Nd6 20. c3 Ba6 21.
Qc2 Qd7 22. Bf1 Bxf1 23. Rxf1 {
Bacrot,E (2697)-Krnan,T (2440)/Berlin 2015/CBM 168 Extra/1/2 (33)}) ({RR} 8...
Rb8 9. Qe2 e6 10. dxe6 Bxe6 11. Rd1 Qb6 12. Rb1 Rfe8 13. Bg5 h6 14. Be3 Rbd8
15. Ne1 Ng4 16. Nd5 Bxd5 17. Rxd5 Nxe3 18. Qxe3 Nb4 19. Rdd1 Nxa2 20. c3 d5 21.
Ra1 d4 22. Qe2 dxc3 23. Rxa2 {
Esipenko,A (2429)-Dragun,K (2584)/Cappelle la Grande 2016/EXT 2017/0-1}) 9. e5
Ne8 10. Bf4 $146 ({RR} 10. Nxb5 dxe5 11. a4 Bb7 12. c4 Nd6 13. Qe2 f6 14. Be3
Nf5 15. Nd2 Nd4 16. Bxd4 cxd4 17. f4 Qb6 18. Kh1 Nb4 19. fxe5 fxe5 20. Ne4 a6
21. Na3 Qa5 22. Qd2 Rxf1+ 23. Rxf1 Rb8 24. b3 Bc8 {
Abhilash,R (2109)-Navalgund,N (2188)/Chennai 2011/CBM 143 Extra/1/2 (50)})
10... Nac7 11. a3 a5 12. a4 b4 13. Ne4 Ba6 14. Re1 Bc4 15. Qd2 Bxd5 16. Bh6 f5
17. exf6 Nxf6 18. Bxg7 Kxg7 (18... Nxe4 $142 19. Rxe4 Bxe4 20. Bxf8 Qxf8 $17)
19. Nxf6 Rxf6 20. Qe3 Re6 21. Qg5 Rxe1+ 22. Rxe1 e5 23. Qe3 Qf6 24. Nd2 Bxg2
25. Kxg2 Rd8 26. Ne4 Qe7 27. Rd1 Ne6 28. Nxd6 Nd4 29. Ne4 Nxc2 30. Qc1 Rxd1 (
30... b3 31. Rxd8 Qxd8 32. Qd2 Qd3) 31. Qxd1 Nd4 32. Qd3 Qb7 33. f3 Qd5 34. Qa6
Qf7 35. Ng5 Qe7 36. Ne4 Qf8 37. Ng5 Qe7 38. Ne4 Qf8 39. Ng5 Qe7 40. Ne4 1/2-1/2

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "6.3"]
[White "Metev, Martin"]
[Black "Kolev, Nikola Vl."]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1910"]
[BlackElo "1913"]
[PlyCount "147"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nc3 Nc6 6. Be3 Nf6 7. f3 O-O 8.
Qd2 d5 9. O-O-O dxe4 10. fxe4 Ng4 11. Nxc6 Qxd2+ 12. Rxd2 bxc6 13. Nd1 Nxe3 14.
Nxe3 Bh6 15. Rd3 Be6 16. Rc3 Rfd8 17. Be2 Rd4 18. Bf3 Rad8 19. Re1 Ra4 20. a3
Rc8 21. Kb1 Bg7 22. Rd3 Rb8 23. Nd1 Bc4 24. Rd7 Rxa3 25. e5 Ba2+ 26. Ka1 Be6+
27. bxa3 Bxd7 28. Nc3 Be6 29. Re3 Bh6 30. Re2 Bc1 31. Nd1 c5 32. a4 Rb4 33. Bc6
Bg4 34. Bf3 Bxf3 35. gxf3 Rxa4+ 36. Kb1 Bf4 37. c3 Ra6 38. Nb2 Re6 39. Nd3 g5
40. h4 h6 41. hxg5 hxg5 42. Re4 f6 43. Rc4 Bxe5 44. Rxc5 Bd6 45. Rc8+ Kf7 46.
Kc2 Re2+ 47. Kd1 Ra2 48. c4 Ke6 49. Rh8 Bf4 50. Nc5+ Kd6 51. Ne4+ Kd7 52. Rh7
Be5 53. Rf7 a5 54. Rf8 Bd4 55. Ra8 a4 56. Ra5 e6 57. c5 a3 58. Ra4 Ra1+ 59. Kc2
Bb2 60. Ra7+ Kc6 61. Ra6+ Kb5 62. Rb6+ Kc4 63. Ra6 Rc1+ 64. Kd2 Kb3 65. Rb6+
Ka2 66. c6 Kb1 67. Kd3 Rc2 68. Nd2+ Rxd2+ 69. Kxd2 a2 70. Ra6 Bc1+ 71. Kd1 Bf4
72. Rb6+ Ka1 73. Kc2 f5 74. Rb7 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "6.5"]
[White "Andreev, Dobrotich"]
[Black "Mladenov, Andrey"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1907"]
[BlackElo "1566"]
[PlyCount "41"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8.
exd5 Ne7 9. c4 Ng6 10. c5 a6 11. Nxd6+ Bxd6 12. cxd6 Qxd6 13. Be2 $146 ({RR} 
13. Qa4+ Bd7 14. Qb3 O-O ({RR} 14... Nf4 15. Bxf4 exf4 16. Be2 O-O 17. O-O b5
18. Rac1 Rac8 19. Bf3 g5 20. h3 f5 21. Rxc8 Bxc8 22. Rc1 Bd7 23. Qc2 Rc8 24.
Qd2 Re8 25. Qd3 Re5 26. Qc2 g4 27. hxg4 fxg4 28. Be4 Qe7 29. d6 {
Svoboda,V (2056)-Svoboda,K (1784)/Zlate Hory 2006/EXT 2008/1-0 (44)}) 15. Bd3
Ne7 16. Be4 f5 17. Bc2 Nxd5 18. Qxd5+ Qxd5 19. Bb3 Qxb3 20. axb3 Be6 21. b4
Rad8 22. O-O Rd4 23. Re1 Rfd8 24. Bg5 R8d5 25. Be7 Rd2 26. b5 Rxb5 27. Ba3 Bd7
{Kanbier,M (1232)-Dijkhuis,S (1675)/Rijswijk 2011/EXT 2012/0-1 (48)}) ({RR} 13.
Qb3 O-O 14. Be3 b5 15. Bd3 f5 16. O-O-O Bb7 17. Bc2 Rac8 18. Rd3 Rc4 19. Rhd1
Rfc8 20. Rc3 Rxc3 21. bxc3 f4 22. Bd2 Ne7 23. Qb4 Qxb4 24. cxb4 Bxd5 25. g3 Be4
{0-1 Kun,S (2280)-Kadar,G (2330)/Hungary 1993/TD}) 13... O-O 14. O-O f5 15. Bg5
e4 16. Rc1 f4 17. Bh5 Rf5 18. Bg4 Rxd5 19. Bxc8 Rxd1 20. Rfxd1 Rxc8 21. Rxc8+
1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "6.6"]
[White "Simeonov, Daniel"]
[Black "Kostov, Nikolay"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "1491"]
[BlackElo "1680"]
[PlyCount "87"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. e3 a6 5. a3 dxc4 6. Bxc4 b5 7. Ba2 Bb7 8. Nf3
c5 9. O-O Qc7 $146 ({RR} 9... cxd4 10. exd4 Be7 11. Bg5 O-O 12. Qd3 ({RR} 12.
Re1 Nc6 13. Qd3 b4 14. Na4 Qa5 15. Bxf6 Bxf6 16. Nc5 Bc8 17. Rac1 bxa3 18. bxa3
Ne7 19. Ne4 Bb7 20. Nxf6+ gxf6 21. Rc5 Qd8 22. Rh5 Ng6 23. d5 Bxd5 24. Bxd5
exd5 25. Qd2 Re8 26. Rd1 Qd6 {Farago,I-Espig,L/Budapest 1975/MCL/1-0 (37)})
12... Nbd7 13. Rad1 Re8 14. Rfe1 h6 15. Bh4 Nd5 16. Nxd5 Bxd5 17. Bxd5 exd5 18.
Bxe7 Rxe7 19. Ne5 Rc8 20. Re3 Qc7 21. Qe2 Qc2 22. Nc6 Rxc6 23. Rxe7 Nf8 24. Re1
{Steiner,L-Purdy,C/Perth 1937/EXT 2006/[Purdy]/1-0 (41)}) ({RR} 9... Be7 10.
Qe2 Nbd7 ({RR} 10... O-O 11. Rd1 Nbd7 12. dxc5 Bxc5 13. b4 Ba7 14. Bb2 Qe7 15.
h3 Rfd8 {1/2 Panno,O (2510)-Braga,F (2375)/Mar del Plata 1982/MCL}) 11. Rd1 Qc7
12. dxc5 ({RR} 12. Bd2 O-O 13. Rac1 Rac8 14. h3 Qb8 15. Be1 cxd4 16. Nxd4 Kh8
17. Bb1 Ne5 18. f4 Nc4 19. Bh4 Qa7 20. Kh2 Rfd8 21. a4 b4 22. Na2 Nb6 23. Rxc8
Rxc8 24. Bxf6 Bxf6 25. Nxb4 Nxa4 26. Nxe6 fxe6 {
Ernst,S (2535)-Bok,B (2613)/playchess.com INT 2016/CBM 173 Extra/1-0 (31)})
12... Nxc5 13. b4 Ncd7 14. Bb2 O-O 15. Rac1 Qb8 16. h3 Bxf3 17. Qxf3 a5 18. Rd4
axb4 19. axb4 Ne5 20. Qe2 Rc8 21. Rcd1 Nc4 22. Bxc4 bxc4 23. Rxc4 Rxc4 24. Qxc4
{Zhou,W (2643)-Ni,H (2704)/Zaozhuang 2015/EXT 2016/1/2 (31)}) 10. Ne2 Bd6 11.
Ng3 h5 12. dxc5 Bxg3 13. fxg3 Nbd7 14. b4 Qc6 15. Bb2 O-O-O 16. Qe2 Rdg8 17.
Nd4 Qe4 18. c6 h4 19. cxb7+ Kxb7 20. Qf3 hxg3 21. h3 Ne5 22. Qxe4+ Nxe4 23. Nf3
Nxf3+ 24. Rxf3 Ng5 25. Rxg3 f6 26. Rd1 Rd8 27. Bb3 Rxd1+ 28. Bxd1 e5 29. h4
Rxh4 30. Bf3+ Kb6 31. Bd5 a5 32. Bc3 axb4 33. Bxb4 e4 34. Kf2 Rh8 35. Rg4 Re8
36. Rh4 Re5 37. Bb3 Re8 38. Rh1 Rd8 39. Ke2 Kb7 40. Rd1 Rc8 41. Rd7+ Rc7 42.
Bd5+ Kc8 43. Rxc7+ Kxc7 44. Bf8 1-0

[Event "188th open MGU"]
[Site "Sofia"]
[Date "2017.07.16"]
[Round "6.7"]
[White "Stoyanov, Plamen"]
[Black "Georgiev, Nikolay Zh."]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "1427"]
[BlackElo "1560"]
[PlyCount "42"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 Bg4 5. Nc3 e6 6. Be2 Bxf3 ({RR} 6... Bb4 7.
cxd5 exd5 8. O-O O-O 9. Bd2 Nbd7 10. a3 Bd6 11. h3 {
1/2 Gregor,M (2099)-Sarkozy,L (2395)/Liptovsky Mikulas 2005/EXT 2008}) 7. Bxf3
({RR} 7. gxf3 g6 8. Qb3 Qc7 9. Bd2 Nbd7 10. cxd5 exd5 11. Rc1 Bg7 12. Nb5 Qb8
13. Na3 O-O 14. h4 a6 15. Nb1 Rc8 16. a4 b5 17. a5 Qd6 18. Bb4 Qe6 19. Nd2 Ne8
20. f4 f5 21. Nf3 h6 {
Barea Garcia,L (1858)-Cano Martinez,F (1794)/Palafrugell 2015/EXT 2017/1-0 (75)
}) 7... dxc4 8. Qe2 Nd5 $146 ({RR} 8... Nbd7 9. Qxc4 Bd6 ({RR} 9... e5 10. O-O
Bd6 11. Rd1 Qc7 12. g3 h5 13. b4 h4 14. b5 Nb6 15. Qe2 hxg3 16. fxg3 Nbd5 17.
Nxd5 Nxd5 18. Bb2 e4 19. Bxe4 Bxg3 20. hxg3 Qxg3+ 21. Bg2 Rh6 22. Rd3 O-O-O 23.
Rc1 ({RR} 23. e4) 23... Rdh8 24. Kf1 {
Altinok,S (1800)-Pohlers,J (2140)/Istanbul 2002/EXT 2004/0-1}) 10. O-O O-O 11.
Rd1 Rc8 12. e4 Nb6 13. Qe2 Bb8 14. Bg5 Qc7 15. g3 Nbd7 16. Rac1 Qa5 17. Bf4
Bxf4 18. gxf4 Rfd8 19. a3 Nf8 20. Qe3 Ng6 21. Ne2 Rd7 22. Ng3 Rcd8 23. Rd2 {
Palotas,P (2018)-Potoczky,A (1605)/Biatorbagy 2013/EXT 2014/1-0 (56)}) 9. Qxc4
g6 10. Qb3 Qb6 11. Bxd5 cxd5 12. Bd2 Nc6 13. Rc1 Bd6 14. Qxb6 axb6 15. a3 Kd7
16. O-O Na5 17. Nb5 Nc4 18. Nxd6 Kxd6 19. Bb4+ Kd7 20. Rc2 Rhc8 21. Rfc1 Rc6
1/2-1/2