[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "1.1"]
[White "Georgiev, Nikolay Zh."]
[Black "Metev, Martin"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1644"]
[BlackElo "2030"]
[PlyCount "84"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e6 2. Nc3 d5 3. Nf3 d4 4. Ne2 c5 5. c3 dxc3 6. bxc3 Nc6 7. d4 cxd4 8.
cxd4 Nf6 9. Ng3 Bb4+ 10. Bd2 O-O ({RR} 10... Qa5 11. Rb1 Bxd2+ 12. Qxd2 Ke7 13.
Bb5 Bd7 14. Ne5 Qxd2+ 15. Kxd2 Na5 16. Rhc1 Rac8 17. Nxd7 Nxd7 18. Bxd7 Kxd7
19. Nh5 b6 20. g3 g6 21. Nf4 Rhd8 22. Ne2 Rc6 23. Rxc6 Nxc6 24. f3 Kc7 25. Ke3
{Sigurjonsson,G (2475)-Hort,V (2600)/Hastings 1976/EXT 1999/1/2}) 11. Be2 Qa5
12. Bxb4 $146 ({RR} 12. e5 Nd5 13. a3 Bxd2+ 14. Qxd2 Nf4 15. Qxa5 Nxa5 16. Bf1
Bd7 17. Ne4 Rac8 18. g3 Bc6 19. Nfd2 Ng6 20. f3 Rcd8 21. Nd6 f6 22. N6c4 Nxc4
23. Bxc4 Rxd4 24. Bxe6+ Kh8 25. Nb3 Rd3 26. O-O Nxe5 {
Philipowski,R (2272)-Glek,I (2554)/Eupen 2000/EXT 2006/0-1 (37)}) 12... Qxb4+
13. Qd2 Qxd2+ 14. Kxd2 Rd8 15. Kc3 b6 16. Bc4 Na5 17. Bb3 Bb7 18. Rhe1 Rac8+
19. Kb2 Nc4+ 20. Bxc4 Rxc4 21. a3 Rdc8 22. Re2 Kf8 23. Rd1 g6 24. Ne5 Rc3 25.
f3 a5 26. Rd3 Rxd3 27. Nxd3 Rc4 28. Rc2 Rxd4 29. Ne5 Nd7 30. Rc7 Nxe5 31. Rxb7
Rd2+ 32. Kb3 Rxg2 33. Rxb6 Nxf3 34. Ka4 Nxh2 35. Rb3 h5 36. Kxa5 h4 37. Nh1 Ng4
38. Rb1 h3 39. a4 h2 40. Kb6 Rg1 41. Rb2 Rxh1 42. a5 Ra1 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "1.2"]
[White "Andreev, Dobrotich"]
[Black "Mladenov, Andrey"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1998"]
[BlackElo "1553"]
[PlyCount "63"]
[EventDate "2017.02.25"]
[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. Bg5 a6 8.
Bxf6 gxf6 9. Na3 b5 10. Nd5 f5 11. exf5 Bxf5 12. Bd3 Be6 13. Be4 Rc8 14. c3 Bg7
15. Nc2 ({RR} 15. Qh5 Ne7 16. Nxe7 Qxe7 17. Nc2 Rc4 18. Qf3 O-O 19. Ne3 f5 20.
Bd5 Rf4 21. Qd1 e4 22. Qb3 Bf7 23. Rd1 Be5 24. Qa3 Qa7 25. Qb3 Rxf2 26. Kxf2 f4
27. Rde1 Kh8 28. Bxf7 Rxf7 29. Rhf1 fxe3+ {
Taylor,M (1892)-Stevenson,J (2093)/England 2015/EXT 2016/1-0 (51)}) 15... O-O
16. g4 Na5 $146 ({RR} 16... Ne7 17. Nxe7+ Qxe7 18. Ne3 Bh6 19. Nf5 Bxf5 20.
Bxf5 Rc5 21. h4 Bf4 22. Be4 Kh8 23. Qd3 d5 24. Bg2 e4 25. Qd4+ Be5 26. Qe3 f5
27. gxf5 Rxf5 28. Rd1 Qf8 29. Ke2 b4 30. cxb4 Rc2+ 31. Rd2 {
Fugger,M (1787)-Knollhuber,P (1790)/Bayern 2005/EXT 2007/0-1 (31)}) 17. Nce3
Nc4 18. Qc2 Qh4 $6 (18... Nxe3 $142 19. Bxh7+ Kh8 20. Nxe3 b4 $15) 19. O-O-O
Nxe3 20. fxe3 a5 21. g5 Kh8 22. Ne7 Rc4 23. Bd5 Bxd5 (23... Rc7 $142 24. Nf5
Qxg5 25. Nxg7 Bxd5 26. Rxd5 Qxe3+ 27. Kb1 Kxg7 $15) 24. Nxd5 Qxg5 25. h4 Rxh4
26. Rxh4 Qxh4 27. Qg2 Qh6 $2 (27... f5 $142 $19) 28. Rh1 Qg6 $2 (28... Qe6 $1
29. Qh2 h6 $17) 29. Qh3 Re8 30. Qd7 Rf8 31. Ne7 Qe4 $4 (31... Qg2 32. Rh5 Qf1+
33. Kd2 Qf2+) 32. Qh3 1-0

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "1.5"]
[White "Lenkova, Lyubomira"]
[Black "Babatov, Martin"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1303"]
[BlackElo "1723"]
[PlyCount "94"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 c6 2. c4 d5 3. Nc3 Nf6 4. Nf3 Bf5 5. cxd5 Nxd5 6. Qb3 Qb6 7. Nxd5 Qxb3 8.
Nc7+ Kd8 9. axb3 Kxc7 10. Bf4+ Kc8 11. e3 f6 12. Rc1 g5 13. Bg3 h5 14. h3 h4
15. Bh2 e6 16. Bc4 Bb4+ 17. Ke2 Kd7 18. Rhd1 Bd6 19. Bxd6 Kxd6 20. Nd2 Nd7 21.
e4 Bg6 22. Ke3 Nb6 23. Bd3 Ke7 24. b4 Rac8 25. Nb3 Nd7 26. Rc3 e5 27. Rdc1
exd4+ 28. Nxd4 a6 29. b5 axb5 30. Bxb5 Ra8 31. Bc4 Ne5 32. Be6 Rhd8 33. Rb3
Rxd4 34. Kxd4 Kxe6 35. f3 Ra4+ 36. Kc3 Rc4+ 37. Kd2 Rxc1 38. Kxc1 b5 39. Kd2
Nc4+ 40. Kd3 Ke5 41. Ke2 f5 42. exf5 Bxf5 43. Rb4 Kd6 44. Kf2 Bc2 45. b3 Kc5
46. Rxc4+ bxc4 47. bxc4 Kxc4 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "1.6"]
[White "Kostov, Nikolay"]
[Black "Mavrodiev, Slav"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1694"]
[BlackElo "1397"]
[PlyCount "69"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. e3 Nf6 3. Bd3 e6 4. f4 Be7 5. Nf3 O-O 6. O-O c5 7. c3 c4 8. Bc2 Nc6
9. Nbd2 b5 $146 ({RR} 9... Bd7 10. Ne5 b5 11. Rf3 b4 12. Rh3 h6 13. g4 Nxe5 14.
dxe5 Nh7 15. g5 Bxg5 16. Bxh7+ Kxh7 17. fxg5 Qxg5+ 18. Rg3 Qxe5 19. Qc2+ Kg8
20. cxb4 f5 21. Qc3 Qxc3 22. bxc3 a5 23. Bb2 axb4 24. cxb4 {
Norena Yepez,V-Martinez,L (1657)/Medellin 2014/CBM 160 Extra/1-0}) 10. Ne5 Bb7
11. g4 h6 12. g5 hxg5 13. fxg5 Ne4 14. Nxe4 dxe4 15. Bxe4 Nxe5 16. Bxb7 Rb8 17.
Be4 Ng6 18. h4 Nxh4 19. Qh5 Ng6 20. Bxg6 fxg6 21. Qxg6 Rxf1+ 22. Kxf1 Bxg5 23.
Qxe6+ Kh8 24. Ke2 Rb6 25. Qg4 Rh6 26. Qg3 Bh4 27. Qg2 Rf6 28. Kd1 Rf2 29. Qh3
Qg5 30. Bd2 Qg1+ 31. Kc2 Qg6+ 32. Kd1 Qg1+ (32... Qe4 $142 $19) 33. Kc2 Qg6+
34. Kd1 Qh5+ 35. Kc2 1/2-1/2

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "2.2"]
[White "Babatov, Martin"]
[Black "Andreev, Dobrotich"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1723"]
[BlackElo "1998"]
[PlyCount "78"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. h3 g6 7. Bf4 Bf5 8. Bxf5
gxf5 9. Nf3 ({RR} 9. Qb3 Qd7 10. Nf3 Rg8 11. g3 Nh5 12. Ne5 Nxe5 13. Bxe5 f6
14. Qd1 Ng7 15. Bf4 O-O-O 16. Be3 e5 17. dxe5 fxe5 18. Bxa7 Qc6 19. Qb3 d4 20.
O-O Ne6 21. Nd2 Bc5 22. cxd4 Nxd4 23. Qe3 Ne2+ {
Rapport,R (2698)-Laznicka,V (2673)/Deizisau 2014/CBM 159 Extra/0-1}) 9... e6
10. Nbd2 ({RR} 10. O-O Bg7 11. Ne5 O-O 12. Nxc6 bxc6 13. Nd2 Ne4 14. Qe2 Qb6
15. Nb3 Rfc8 16. f3 Nf6 17. Be3 Rab8 18. Rab1 Qb5 19. Qxb5 Rxb5 20. Bf4 Nh5 21.
Bd6 Rd8 22. Bc5 a5 23. Nc1 Nf4 24. b4 Bf8 {
Mihelic,V (1278)-Schulze,L (1252)/Mureck 2015/EXT 2016/1/2 (37)}) 10... Qb6
$146 ({RR} 10... Ne4 11. Ne5 ({RR} 11. Qe2 Bd6 {
1/2 Halmi,B (1936)-Gunyecz,Z (2042)/Hungary 2007/EXT 2008}) 11... Bg7 12. Ndf3
Rc8 13. O-O Rg8 14. Qb3 ({RR} 14. Nd3) 14... Nxe5 15. Bxe5 Bxe5 16. Nxe5 Qg5 ({
RR} 16... Nd2 17. Qxb7 Rc7 18. Qb5+) 17. Qb5+ Rc6 18. g4 fxg4 19. h4 Qd8 ({RR} 
19... Qf4 20. Qxb7 Rd6) 20. Qxb7 Rc7 21. Qb5+ Kf8 22. Kg2 Kg7 23. Rh1 Kh8 24.
Qe2 f6 25. Nd3 {Yudasin,L-Gabdrakhmanov,R/Moscow  1977/EXT 2010/0-1 (38)}) ({RR
} 10... Bd6 {RR} 11. Ne5 Bxe5 12. dxe5 Nd7 13. Qe2 Rg8 14. g4 Qb6 15. O-O-O
fxg4 16. hxg4 Qa6 17. Qxa6 bxa6 18. f3 Ndxe5 19. Bxe5 Nxe5 20. Rxh7 Ke7 21. Kc2
Rgc8 22. Re1 Kf6 23. Rh6+ Ng6 24. b4 Rh8 25. Reh1 Rxh6 {
Mudelsee,M (2284)-Morchiashvili,B (2421)/Plovdiv 2008/CBM 124/0-1 (40)}) 11.
Qb3 Ne4 12. Qxb6 axb6 13. O-O Kd7 14. Nxe4 fxe4 15. Ne5+ Nxe5 16. Bxe5 Rg8 17.
f3 f5 18. fxe4 dxe4 19. Kh2 h5 20. a3 b5 21. Rae1 Bd6 22. Bxd6 Kxd6 23. Rf4 Rg5
24. h4 Rg4 $2 (24... Rg7 $142) 25. Rxg4 hxg4 26. Kg3 Kd5 27. Kf4 Kc4 28. Re3 b4
29. axb4 Ra2 30. Re2 $4 (30. Ke5 Rxb2 31. Kxe6 Rxg2 32. Kxf5 g3 33. Kxe4 Rh2
34. Rxg3 Rxh4+ 35. Kf5 $16) 30... Kd3 31. Re3+ Kd2 32. h5 Rxb2 33. h6 Rb1 34.
h7 Rh1 35. Rh3 gxh3 36. g4 Rf1+ 37. Kg3 e3 38. h8=Q e2 39. Qh6+ f4+ 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "2.3"]
[White "Mavrodiev, Slav"]
[Black "Ignatov, Bojidar"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "1397"]
[BlackElo "1761"]
[PlyCount "66"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nf3 Be7 8. O-O
b5 9. a3 Bb7 10. Bd3 O-O 11. h3 Nbd7 12. Be3 Qc7 13. Nh2 Nc5 14. Bxc5 Qxc5 15.
Ng4 Rfd8 16. Nxf6+ Bxf6 17. Qf3 Bg5 18. Nd5 Bxd5 19. exd5 g6 20. g4 Rd7 21.
Rfe1 Bf4 22. b4 Qc3 23. Be4 Qxf3 24. Bxf3 f5 25. gxf5 gxf5 26. a4 Rc8 27. axb5
axb5 28. Be2 Rxc2 29. Ra8+ Kg7 30. Rb8 Kh6 31. Bxb5 (31. Bd3 Rb2 32. Bxf5 Rf7)
31... Rg7+ 32. Kf1 Bh2 33. Re2 Rg1# 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "2.5"]
[White "Ilieva, Ralitsa"]
[Black "Georgiev, Nikolay Zh."]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1469"]
[BlackElo "1644"]
[PlyCount "133"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. c4 c6 3. Bf4 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nf3 Bd6 7. Bg5 ({RR} 7. Bg3
O-O ({RR} 7... Bxg3 8. hxg3 Qb6 9. Qb3 Qxb3 10. axb3 O-O 11. Be2 Nbd7 12. O-O
Ne4 13. Rfc1 Bg4 14. Rc2 Ndf6 15. Bd3 Nd6 16. c5 Nde4 17. b4 a6 18. Na4 Bf5 19.
Nb6 Rad8 20. Ne5 Ng5 21. Rd2 Bxd3 22. Rxd3 {
Jaskunaite,A (1556)-Jonkus,L (1890)/Lithuania 2016/CBM 170 Extra/0-1 (39)}) 8.
Be2 h6 9. Qb3 Bxg3 10. hxg3 Qb6 11. O-O {
1/2 Palatnik,S (2460)-Giorgadze,T (2505)/Lvov 1986/EXT 1997}) 7... Nbd7 8. cxd5
cxd5 $146 ({RR} 8... exd5 9. Bd3 ({RR} 9. Be2 O-O 10. Nh4 Bg6 11. Nxg6 fxg6 12.
O-O Qc7 13. h3 h6 14. Bxf6 gxf6 15. Rc1 Qd8 16. Bd3 f5 17. Qf3 Nf6 18. Ne2 Ne4
19. Nf4 Qf6 20. Rc2 g5 21. Ne2 Rae8 22. Nc3 Qg7 23. Qe2 Kh8 {
Forestier,C (1860)-Llorens,J (1650)/Reims 2004/EXT 2005/1/2}) 9... Bxd3 10.
Qxd3 O-O 11. O-O Qc7 ({RR} 11... Re8 12. Rfc1 Nf8 13. Rab1 Ng6 14. b4 a6 15. a4
h6 16. Bxf6 Qxf6 17. b5 axb5 18. axb5 h5 19. bxc6 bxc6 20. Ne2 Ne7 21. Rc3 Reb8
22. Rcb3 Rxb3 23. Rxb3 c5 24. dxc5 Ra1+ 25. Rb1 Qb2 26. Nd2 {
Grigorieva,Y (1796)-Garifullin,I (1962)/Ufa 2012/EXT 2014/1/2 (33)}) 12. Rfc1
a6 13. h3 h6 14. Bxf6 Nxf6 15. Rab1 Qe7 16. Nd2 Nd7 17. e4 dxe4 18. Ncxe4 Bf4
19. Re1 Bxd2 20. Qxd2 Nb6 21. Nc5 Qc7 22. Qa5 Rac8 23. Re3 {
McKay,C-Richards,A/Hervey Bay 1999/EXT 2000/1/2 (32)}) 9. Bd3 Bg4 10. O-O O-O
11. h3 Bh5 12. Rc1 a6 13. Re1 b5 14. e4 dxe4 15. Nxe4 Be7 16. Ng3 Bg6 17. Bxg6
hxg6 18. Ne5 Nb6 19. Nc6 Qd7 20. Nxe7+ Qxe7 21. Qf3 Nbd5 22. Ne4 Rfc8 23. Nxf6+
gxf6 24. Bh4 Qd8 25. a3 Kg7 26. Qd3 Rxc1 27. Rxc1 Rc8 28. Qd2 Rxc1+ 29. Qxc1
Qc7 30. Qd2 Qf4 31. Qxf4 Nxf4 32. Kf1 f5 33. Bg3 Nd5 34. Ke2 Kf8 35. Bd6+ Ke8
36. g4 fxg4 37. hxg4 Kd7 38. Bg3 f5 39. f3 Kc6 40. Kd3 Nb6 41. b3 Kd5 42. Bc7
Nd7 43. Bg3 fxg4 44. fxg4 Nf6 45. g5 Ne4 46. Bf4 Nf2+ 47. Kc3 Ng4 (47... Nh3
48. Bd2 Ng1 49. Be3 Nf3 50. Kd3 Ne1+ 51. Kd2 Ke4) 48. Kd3 e5 49. dxe5 Nxe5+ 50.
Ke3 Nd7 51. Kd3 Nc5+ 52. Kc3 Ke4 53. Bd2 Ne6 54. Kb4 Nd4 55. Bc3 Nc6+ 56. Kc5
Ne7 57. Bf6 Nd5 58. Kc6 Ne3 59. Kb7 Nc2 60. Be7 Nd4 61. Kxa6 Nxb3 62. Kxb5 Nd4+
63. Kb6 Kf5 64. a4 Ne6 65. a5 Nxg5 66. Bxg5 Kxg5 67. a6 1-0

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "2.6"]
[White "Mladenov, Andrey"]
[Black "Lenkova, Lyubomira"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "1553"]
[BlackElo "1303"]
[PlyCount "59"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bc5 5. O-O Nf6 6. e5 Ng8 $4 (6... d5 $142
$11) 7. c3 (7. Ng5 $1 Nh6 8. Re1) ({RR} 7. Re1 Be7 8. Bf4 Na5 9. Bd5 c6 10. Bb3
Nxb3 11. axb3 c5 12. c3 dxc3 13. Nxc3 g5 14. Bg3 g4 15. Nd2 h5 16. Nde4 Kf8 17.
Qd5 Qb6 18. Nd6 Rh7 19. Qd3 Rh6 20. Qf5 Qxb3 21. Bf4 Rg6 {
Radovanovic,D (2368)-Stojanac,A (2063)/Obrenovac 2005/CBM 109 Extra/1-0 (32)})
7... d6 ({RR} 7... d3 8. Qxd3 Nge7 9. Nbd2 d5 10. exd6 Qxd6 11. Qe4 Bf5 12. Qe2
O-O 13. Ne4 Bxe4 14. Qxe4 Qg6 15. Qe2 Rfe8 16. Ng5 Rf8 17. Bd3 Qd6 18. Bxh7+
Kh8 19. Qh5 Qh6 20. Nxf7+ Rxf7 21. Bxh6 {
1-0 Usarova,E (1464)-Zahorcek,J (1509)/Liptovsky Mikulas 2016/CBM 173 Extra})
8. cxd4 Bb6 9. Bg5 $146 ({RR} 9. exd6 Qxd6 10. Re1+ Nge7 11. b3 Bxd4 12. Nxd4
Qxd4 13. Qc2 O-O 14. Bb2 Qg4 15. Nd2 Ng6 16. h3 Qg5 17. Nf3 Qh6 18. Rad1 Nh4
19. Nxh4 Qxh4 20. Qc3 Qh6 21. Rd5 Qf6 22. Qxf6 gxf6 23. Bxf6 h6 {
Dostal,R-Kastner,K/Policka 1997/EXT 1998/1-0}) 9... Nge7 10. exd6 Qxd6 11. d5
Na5 (11... f6 $142 12. dxc6 Qxd1 13. Rxd1 fxg5 14. Nxg5 Nxc6 $16) 12. Bxe7 $2 (
12. Bb5+ $142 $18) 12... Kxe7 13. Qe2+ Kf8 14. Bd3 Bg4 15. Nc3 Re8 16. Qc2 Bxf3
17. gxf3 Qf4 18. Be4 Re5 $6 (18... Nc4 $17) 19. Ne2 Rg5+ 20. Kh1 Qh4 21. Ng3 h5
22. b4 Bd4 23. bxa5 Bxa1 24. Rxa1 Qf4 25. Nf5 g6 26. Qc5+ (26. Qc3 $142) 26...
Kg8 27. Ne7+ Kg7 28. Qd4+ Kh7 29. Bxg6+ fxg6 30. Qxf4 1-0

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "3.3"]
[White "Babatov, Martin"]
[Black "Karaivanova, Petya"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1723"]
[BlackElo "1429"]
[PlyCount "155"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. c4 c6 3. Bf4 Nf6 4. e3 e6 5. Nc3 Nbd7 6. c5 ({RR} 6. Bd3 Bb4 7. Qc2
dxc4 8. Bxc4 b5 9. Bd3 Bb7 10. Nge2 Qe7 11. O-O a6 12. a3 Bxc3 13. Nxc3 e5 14.
Bg5 h6 15. Bh4 c5 16. Be4 Bxe4 17. Nxe4 c4 18. Bxf6 Nxf6 19. Nxf6+ Qxf6 20. Qe4
O-O {Gurevich,M (2620)-Berresheim,H (2225)/Germany 1998/EXT 1999/1-0 (39)})
6... Be7 ({RR} 6... g6 7. Nf3 Nh5 8. Bg3 Nxg3 9. hxg3 Bg7 10. Qc2 e5 11. O-O-O
e4 12. Nd2 O-O 13. f3 exf3 14. gxf3 b6 15. Nb3 bxc5 16. dxc5 Ne5 17. Qh2 h6 18.
f4 Ng4 19. Qd2 Qe7 20. Re1 Bf5 21. Nd4 {
Shvedov,A-Toure,S (1716)/Kouty nad Desnou 2015/EXT 2016/0-1 (41)}) 7. b4 b6
$146 ({RR} 7... O-O 8. h3 Re8 9. Nf3 Ne4 10. Qc2 f5 11. h4 Bf6 12. O-O-O e5 13.
Bxe5 Bxe5 14. dxe5 Nxe5 15. Nd4 Qf6 16. Nxe4 fxe4 17. Kb1 Bg4 18. Rd2 Rab8 19.
a3 b5 20. cxb6 axb6 21. Ka2 b5 22. h5 {
Nikonov,A (1719)-Smorchkov,D/Sterlitamak 2012/EXT 2013/0-1 (36)}) ({RR} 7... a5
8. b5 O-O 9. b6 Nxc5 10. Bc7 Qd7 11. dxc5 Bxc5 12. Bd3 Ne8 13. Be5 Bxb6 14. Qh5
g6 15. Qh3 Bc7 16. Bg3 e5 17. Qxd7 Bxd7 18. Rd1 Bc8 19. f3 f5 20. Nge2 Be6 21.
O-O e4 22. fxe4 {Viola,M-Krysa,L/Esperanza 2002/EXT 2003/0-1 (40)}) 8. Nf3 Nh5
9. Be5 Nhf6 10. Bd3 bxc5 11. bxc5 h6 12. O-O O-O 13. Qa4 Bb7 14. Rab1 Nxe5 15.
Nxe5 Qc7 16. Rb3 Bxc5 17. Rxb7 Qxb7 18. dxc5 Rac8 19. Ba6 Qc7 20. Bxc8 Qxe5 21.
Qxc6 Ng4 22. g3 Qh5 23. h4 g5 24. Qc7 gxh4 25. gxh4 e5 26. Qd7 f5 27. Qxd5+ Kh7
28. Be6 Qxh4 29. Qg2 Rf6 30. f3 Rxe6 31. fxg4 Rg6 32. Qh2 Qxg4+ 33. Kh1 Qc4 34.
Rxf5 Qxc3 35. Rf7+ Kg8 36. Qf2 Qc1+ 37. Kh2 Qxc5 38. Qf5 Qd6 39. Rd7 Qf6 40.
Qxf6 Rxf6 41. Rxa7 Rf3 42. e4 Rf4 43. Ra4 Kf7 44. Kg3 Kf6 45. Rc4 Rf1 46. Rc6+
Kg5 47. Re6 Ra1 48. Rxe5+ Kf6 49. Ra5 Re1 50. Kf3 Rf1+ 51. Ke2 Rh1 52. a4 h5
53. Rf5+ Ke6 54. a5 h4 55. Rh5 Ra1 56. Rh6+ Kd7 57. a6 Kc7 58. Kf3 Ra3+ 59. Kg4
Ra4 60. Kf5 Ra5+ 61. e5 h3 62. Rxh3 Rxa6 63. Rd3 Ra1 64. e6 Rf1+ 65. Kg6 Rg1+
66. Kf7 Rf1+ 67. Ke8 Rf4 68. Rd7+ Kc8 69. Rf7 Ra4 70. Rd7 Rf4 71. e7 Rh4 72.
Rd3 Rh8+ 73. Kf7 Rh7+ 74. Kf8 Rh8+ 75. Kg7 Re8 76. Kf7 Rh8 77. e8=Q+ Rxe8 78.
Kxe8 1-0

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "3.4"]
[White "Mladenov, Andrey"]
[Black "Ilieva, Ralitsa"]
[Result "0-1"]
[ECO "C19"]
[WhiteElo "1553"]
[BlackElo "1469"]
[PlyCount "68"]
[EventDate "2017.02.25"]
[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. Nf3 Nbc6 8.
Bd3 Bd7 9. Be3 ({RR} 9. O-O Qa5 ({RR} 9... Ng6 10. Be3 O-O 11. Qd2 Rc8 12. Rab1
Qc7 13. Ng5 f6 14. exf6 gxf6 15. Nf3 e5 16. Bxg6 hxg6 17. dxe5 Nxe5 18. Qxd5+
Rf7 19. Nxe5 fxe5 20. Rxb7 {
1-0 Ishizuka,M (1778)-Faqeeh,R (1450)/Baku 2016/CBM 174 Extra}) 10. Re1 f6 11.
Rb1 c4 12. Bf1 O-O-O 13. exf6 gxf6 14. Bh6 Nf5 15. Bd2 h5 16. Qc1 Rdg8 17. a4
h4 18. h3 Nd6 19. Bf4 Ne4 20. Qb2 b6 21. Re3 Ne7 22. Bh2 Bc6 23. Ra1 Nf5 {
Morawietz,D (2449)-Rozentalis,E (2603)/Bad Wiessee 2009/EXT 2010/0-1}) 9... c4
10. Be2 Qc7 11. Qb1 $146 ({RR} 11. O-O O-O-O 12. Ng5 Rdf8 13. Bh5 g6 14. Bg4 h6
15. Nh3 f5 16. exf6 Rxf6 17. Qd2 g5 18. f4 h5 19. Be2 g4 20. Ng5 Nf5 21. Rfe1
Nce7 22. g3 Ng6 23. Bf2 Qd8 24. Qc1 Qf8 25. Qb2 Qh6 {
Nadjmabadi,B-Trzcielinski,C/Germany 1994/EXT 2002/0-1 (33)}) 11... Nf5 12. Bd2
h6 13. g4 Nfe7 14. h4 O-O-O 15. Qb2 f6 16. exf6 gxf6 17. O-O-O Kb8 18. Kb1 Ka8
19. Qc1 Rdg8 20. Rdg1 e5 21. dxe5 fxe5 22. Bxh6 Bxg4 23. Bg5 Bh5 24. Bf6 Rxg1
25. Rxg1 Rh7 26. Qg5 a6 27. Nd4 Bxe2 (27... Nxd4 $19) 28. Nxe2 Qb6+ 29. Ka2
Qxf2 30. Bxe7 Nxe7 31. Qxe5 Rxh4 32. Qxe7 Re4 33. Rg8+ Ka7 34. Nd4 (34. Qc7)
34... Rxe7 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "3.5"]
[White "Kostov, Nikolay"]
[Black "Georgiev, Nikolay Zh."]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1694"]
[BlackElo "1644"]
[PlyCount "91"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. e3 Bf5 3. Bd3 e6 4. f4 Nf6 5. Nf3 Bd6 6. O-O Nbd7 ({RR} 6... O-O 7.
Ne5 c5 8. c3 Nc6 9. Qc2 Bxd3 10. Qxd3 Ne4 11. Nd2 f5 12. Ndf3 Rc8 13. Bd2 g5
14. Be1 Rc7 15. h4 gxf4 16. exf4 Rg7 17. Rc1 Qb6 18. Rc2 cxd4 19. cxd4 Bxe5 20.
fxe5 Ng3 21. Rff2 {
Graczyk,K (1903)-Prihodko,A (2310)/Lvov 2013/CBM 156 Extra/0-1 (40)}) 7. Ne5 c6
$146 ({RR} 7... c5 8. c3 O-O 9. Qc2 ({RR} 9. Nd2 cxd4 10. cxd4 Nxe5 11. Bxf5
Nc4 12. Nxc4 exf5 13. Ne5 Qb6 14. b3 Rfc8 15. Qd3 Ne4 16. Bb2 Rc7 17. Rfc1 Rac8
18. Nf3 Qa5 19. Rxc7 Rxc7 20. a3 a6 21. Qd1 Qb5 22. Rc1 Rxc1 23. Bxc1 Qa5 {
Szablowski,P (2433)-Akesson,R (2421)/Budapest 2011/CBM 145 Extra/1/2 (34)})
9... Bxd3 10. Qxd3 Ne4 11. Nd2 Ndf6 12. Ndf3 Qb6 13. Rb1 Rad8 14. Bd2 Nd7 15.
Be1 f6 16. Nxd7 Rxd7 17. Nd2 Nxd2 18. Bxd2 f5 19. Be1 Qa5 20. a3 Qc7 21. Qd2 b5
22. Bh4 {Pedrosa Rodriguez,R-Barredo,L/Candas 1997/EXT 2001/0-1 (63)}) ({RR} 
7... O-O 8. c3 h6 9. Qc2 Bxd3 10. Qxd3 Ne4 11. Nxd7 Qxd7 12. Nd2 f5 13. Nxe4
fxe4 14. Qe2 c5 15. Bd2 c4 16. Be1 Qe7 17. Qg4 Qf6 18. Bh4 Qf5 19. Qe2 h5 20.
h3 Qh7 21. Rf2 b5 22. Bg5 {
Degrave,J (2003)-Molet,A (1830)/Belfort 2010/CBM 138 Extra/0-1}) ({RR} 7... h6
8. c4 Bxd3 9. Qxd3 c6 10. Bd2 O-O 11. b4 Ne4 12. a4 Bxe5 13. fxe5 f6 14. exf6
Ndxf6 15. Qe2 Qe7 16. c5 Rf7 17. b5 Raf8 18. Be1 Ng4 19. Rxf7 Qxf7 20. h3 Ngf6
21. Na3 Qg6 22. a5 {Sazanova,J (2173)-Molkova,O/Vladimir 2002/CBM 087 Extra/0-1
}) 8. b3 Qe7 9. a4 O-O 10. Ba3 Bxa3 11. Nxa3 Rfc8 12. c4 c5 13. Bxf5 exf5 14.
Nc2 dxc4 15. Nxc4 cxd4 16. Nxd4 g6 17. Qf3 Ne4 18. Rfe1 Nb6 19. Nxb6 axb6 20.
Rac1 Qd7 21. g4 Rxc1 22. Rxc1 Rc8 23. Rxc8+ Qxc8 24. gxf5 Qc1+ 25. Kg2 Nd2 26.
Qe2 Qc3 27. f6 Nxb3 28. Nxb3 Qxb3 29. Qd2 h5 30. Qd8+ Kh7 31. Qd7 Qb2+ 32. Kf3
Qxf6 33. Qxb7 Kg7 34. Qd5 Qh4 35. Qd4+ Qf6 36. h4 Qxd4 37. exd4 Kf6 38. Ke4 Ke6
39. d5+ Kf6 40. Kd4 Kf5 41. Kc4 f6 42. Kb5 g5 43. d6 Ke6 44. Kc6 gxf4 45. d7 f3
46. d8=Q 1-0

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.25"]
[Round "3.6"]
[White "Lenkova, Lyubomira"]
[Black "Mavrodiev, Slav"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1303"]
[BlackElo "1397"]
[PlyCount "84"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. Bf4 Nf6 3. Nf3 e6 4. e3 Bd6 5. Bg3 O-O 6. Bd3 h6 ({RR} 6... Qe7 7.
Nbd2 Nbd7 8. Ne5 c5 9. c3 Ne8 10. Qh5 g6 11. Qh6 c4 12. Bc2 Qf6 13. Ndf3 Qg7
14. Qh4 f6 15. Nxd7 Bxd7 16. Bxd6 Nxd6 17. Qf4 Nf7 18. h4 e5 19. dxe5 fxe5 20.
Qg3 Rae8 21. O-O-O {Blatny,P (2505)-Kovacic,P/Velden 1993/TD/1-0 (44)}) 7. Nbd2
Nc6 $146 ({RR} 7... c5 8. c3 ({RR} 8. dxc5 Bxc5 9. Ne5 Nc6 10. c3 Nxe5 11. Bxe5
Bd6 12. Bg3 e5 13. Bh4 Be7 14. Be2 b6 15. Nb3 Bb7 16. Bg3 Ne4 17. Bxe5 f5 18.
Nd4 Qc8 19. f3 Nxc3 20. bxc3 Qxc3+ 21. Kf2 f4 22. exf4 Bc5 {
Cassens,E (1676)-Gette,V (1606)/Hamburg 2012/EXT 2015/1-0 (41)}) 8... Nh5 ({RR
} 8... Nc6 9. Ne5 Qc7 10. f4 Nd7 11. Qh5 f5 12. Bh4 Nf6 13. Bxf6 Rxf6 14. g4
Bxe5 15. fxe5 Nxe5 16. dxe5 Qxe5 17. O-O-O Qxe3 18. Bc2 Bd7 19. Rde1 Qg5 20.
Qxg5 hxg5 21. gxf5 exf5 22. Re5 Raf8 23. Rg1 {
Hidegh,G (2145)-Bartha,L (2045)/Hungary 2013/EXT 2014/1-0}) 9. Bh4 Be7 10. Bg3
Nxg3 11. hxg3 Nc6 12. g4 cxd4 13. exd4 f6 14. Qe2 Qc7 15. Kf1 e5 16. g5 fxg5
17. Nxe5 Nxe5 18. dxe5 Bc5 19. Nf3 g4 20. Nd4 Bxd4 21. cxd4 Be6 22. Rd1 {
Paraschiv,P (1881)-Veljanoski,A (1659)/Tri Buki 2016/CBM 170 Extra/1-0 (38)})
8. Ne5 Bxe5 9. dxe5 Nd7 10. f4 Nb4 11. Be2 f6 12. Nf3 a6 13. c3 Nc6 14. Qc2 Ne7
15. Nd4 Nc5 16. Rd1 Ne4 17. Bf3 Nxg3 18. hxg3 fxe5 19. fxe5 Qe8 20. Bh5 Qd8 21.
g4 Nc6 22. Nxc6 bxc6 23. c4 Qg5 24. Qc3 g6 25. Qd4 gxh5 26. Rxh5 Qg7 27. Ke2
Kf7 28. Rf1+ Ke8 29. Rxf8+ Qxf8 30. Qf4 Qxf4 31. exf4 Kf7 32. Rxh6 Kg7 33. Rf6
dxc4 34. Ke3 Rb8 35. Kd4 Rxb2 36. f5 exf5 37. gxf5 Rxg2 38. Rxc6 Bxf5 39. Rxc7+
Kf8 40. Rxc4 Rxa2 41. Rc6 Bd7 42. Rd6 Ke7 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "4.1"]
[White "Andreev, Dobrotich"]
[Black "Ignatov, Bojidar"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "1998"]
[BlackElo "1761"]
[PlyCount "30"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5
8. Rxe5 O-O 9. d4 Ne8 10. c4 d6 11. Re1 Nf6 12. Nc3 Bf5 13. Qb3 $146 ({RR} 13.
Qf3 Bc8 14. Bg5 h6 15. Bh4 c6 16. h3 Be6 17. b3 d5 18. Rad1 Re8 19. Re3 a6 20.
c5 Nd7 21. Bxe7 Rxe7 22. Rde1 Qc7 23. Bd3 Rae8 24. b4 Nf8 25. Qg3 Qxg3 26. fxg3
f6 27. a4 Kf7 {Kovalenko,I (2680)-Sivuk,V (2552)/Minsk 2015/EXT 2017/1-0 (72)})
13... b6 14. g3 Qd7 15. Bg2 Rae8 {...} 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "4.3"]
[White "Mavrodiev, Slav"]
[Black "Ilieva, Ralitsa"]
[Result "1/2-1/2"]
[ECO "C01"]
[BlackElo "1469"]
[PlyCount "68"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Be2 h6 6. O-O Bd6 7. h3 O-O 8. c4
c6 9. Nc3 Bf5 10. Bd3 Bxd3 11. Qxd3 Re8 12. cxd5 Nxd5 13. Nxd5 cxd5 14. Bd2 Nc6
15. a3 Rc8 16. Rfe1 Qb6 17. b4 Qc7 18. Rxe8+ Rxe8 19. Re1 Rxe1+ 20. Bxe1 Qe7
21. Bc3 a6 22. Kf1 Qe6 23. Qe3 Kf8 24. Qxe6 fxe6 25. h4 Kf7 26. Ke2 Kf6 27. g4
e5 28. dxe5+ Nxe5 29. g5+ hxg5 30. hxg5+ Kf5 31. Nxe5 Bxe5 32. Bxe5 Kxe5 33.
Kd3 b5 34. g6 d4 1/2-1/2

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "4.5"]
[White "Georgiev, Nikolay Zh."]
[Black "Mladenov, Andrey"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1644"]
[BlackElo "1553"]
[PlyCount "88"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 6. a3 O-O 7. Nd2 ({RR} 7.
O-O d6 8. h3 Nd7 ({RR} 8... Be6 9. Nd5 Bxd5 10. exd5 Nb8 11. b4 Nbd7 12. Bb3 a5
13. Bd2 a4 14. Ba2 Qc7 15. c4 b6 16. Nh2 Ne8 17. Qh5 g6 18. Qe2 f5 19. f4 Bf6
20. Rae1 Ng7 21. fxe5 Nxe5 22. Bh6 Rfe8 23. Qc2 {
Stetsko,L (2220)-Arakhamia Grant,K (2364)/Mamaia 2016/CBM 172 Extra/0-1 (31)})
9. Nd5 Nb6 10. Ba2 {1/2 Fedorchuk,S (2634)-Moiseenko,A (2711)/Kiev 2012/CBM 150
}) 7... a6 8. Nf1 d6 $146 ({RR} 8... b5 9. Ba2 d6 10. Ne3 Be6 11. O-O Bxa2 12.
Rxa2 Nd4 13. g3 Re8 14. b3 Rc8 15. f3 Bf8 16. Bd2 g6 17. a4 Bg7 18. Kh1 Qd7 19.
Kg2 Qb7 20. h4 Nh5 21. Ncd5 f5 22. g4 Nf4+ 23. Nxf4 {
Seleljo,D (2252)-Richtrova,E (2216)/Czechia 2013/EXT 2014/0-1 (40)}) 9. Bg5
Nxe4 10. Bxe7 Nxc3 11. Bxd8 Nxd1 12. Bc7 Nxb2 13. Bb3 d5 14. Bd6 Nd4 15. Bxf8
Kxf8 16. Ra2 Nxd3+ 17. cxd3 Nxb3 18. Ne3 Be6 19. Rb2 Na5 20. Rb6 Ke7 21. Kd2 d4
22. Nd1 c4 23. Re1 f6 24. f4 c3+ 25. Kc2 Rc8 26. fxe5 fxe5 27. Rxe5 Rc6 28. Rb4
b5 29. Nf2 Rd6 30. Rb1 Nc6 31. Re2 Kf7 32. Ne4 Rd5 33. Rf2+ Kg6 34. Rf8 a5 35.
Ra8 Kh5 36. Ra6 Bd7 37. Nxc3 dxc3 38. Kxc3 Ne5 39. Rd1 a4 40. Ra8 Bf5 41. d4
Nc4 42. Kb4 Ne3 43. Rd2 Nc2+ 44. Ka5 g5 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "5.2"]
[White "Ilieva, Ralitsa"]
[Black "Andreev, Dobrotich"]
[Result "0-1"]
[ECO "D52"]
[WhiteElo "1469"]
[BlackElo "1998"]
[PlyCount "52"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bg5 c6 6. e3 Qa5 7. a3 Ne4 8. Qc2
Bb4 9. Rc1 Bxc3+ 10. bxc3 Nxg5 11. Nxg5 dxc4 12. Nxh7 Qh5 13. Bxc4 Qxh7 14. Bd3
Qh4 15. h3 e5 16. g3 Qf6 17. h4 Qf3 18. Rg1 exd4 19. cxd4 Nf6 20. Be2 Qf5 21.
Bd3 Qa5+ 22. Ke2 Be6 23. Rb1 O-O-O 24. Qb2 Rd7 25. Rgc1 Qh5+ 26. f3 Bd5 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "5.4"]
[White "Babatov, Martin"]
[Black "Mavrodiev, Slav"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "1723"]
[PlyCount "47"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. c4 e6 3. Bf4 Bd6 ({RR} 3... dxc4 4. Qa4+ Nc6 5. e3 Bb4+ 6. Nc3 Bd7
7. Qc2 Na5 8. Nf3 Nf6 9. Bg5 h6 10. Bh4 b5 11. Ne5 a6 12. Be2 Be7 13. Bf3 c6
14. O-O g5 15. Bg3 h5 16. h3 Nd5 17. Qe2 Nf6 18. Ne4 {
Lodhi,M (2355)-Novikov,I (2585)/Benasque 1996/CBM 053 Extra/1/2 (61)}) 4. Bxd6
Qxd6 5. c5 Qd7 $146 ({RR} 5... Qf4 6. e3 Qf6 7. Nc3 Ne7 8. Nf3 O-O 9. Nb5 Na6
10. Ne5 c6 11. Nd6 Nf5 12. Bxa6 Nxd6 13. cxd6 bxa6 14. Nxc6 Bd7 15. Qa4 Kh8 16.
Qxa6 Bxc6 17. Qxc6 Rfc8 18. Qa4 Rc4 19. Qb3 e5 20. dxe5 {Rousseau,M (1789)
-Fischer,J (1758)/Montigny le Bretonneux 2015/CBM 170 Extra/1-0 (57)}) ({RR} 
5... Qd8 6. Nf3 Nf6 7. e3 O-O 8. Bd3 c6 9. O-O Nbd7 10. Be2 Re8 11. Qd3 e5 12.
dxe5 Nxe5 13. Nxe5 Rxe5 {
1/2 Lemes,C (1800)-Britez Gonzales,J (1872)/Foz do Iguacu 2013/CBM 154 Extra})
({RR} 5... Qe7 6. f4 Nc6 7. Nf3 Nf6 8. Nc3 a6 9. a3 h6 10. e3 Bd7 11. Bd3 O-O
12. O-O Ng4 13. Qe2 f5 14. Ne5 Ngxe5 15. fxe5 Qg5 16. Qf2 Rf7 17. b4 Na7 18. a4
c6 19. b5 a5 20. b6 {Braun,T (1893)-Grbin,S/Senta 2012/CBM 149 Extra/1-0 (56)})
6. Nc3 Nf6 7. b4 O-O 8. Nf3 a5 9. a3 axb4 10. axb4 Rxa1 11. Qxa1 b5 12. Ne5 Qe8
13. e3 c6 14. Be2 Na6 15. Qa5 Bb7 16. O-O Qc8 17. Ra1 Qc7 18. Qxc7 Nxc7 19. Ra7
Rb8 20. Nxc6 Bxc6 21. Rxc7 Ne4 22. Nxe4 dxe4 23. Rxc6 h6 24. Ra6 1-0

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "5.5"]
[White "Kostov, Nikolay"]
[Black "Lenkova, Lyubomira"]
[Result "1-0"]
[ECO "D80"]
[WhiteElo "1694"]
[BlackElo "1303"]
[PlyCount "49"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 Nf6 2. e3 g6 3. c4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. Bc4 ({RR} 6. Nxd5 Qxd5
7. Ne2 O-O 8. Nc3 Qd6 9. Be2 c6 10. O-O Nd7 11. Qc2 e5 12. dxe5 Qxe5 13. e4 Nf6
14. Be3 Ng4 15. Bxg4 Bxg4 16. h3 Bd7 17. Rad1 Qe7 18. Bd4 Rfd8 19. Bxg7 Kxg7
20. Rd3 Be6 {Kramnik,V (2790)-Svidler,P (2750)/Nice 2010/CBM 135 Extra/1/2 (31)
}) 6... Nxc3 ({RR} 6... Nb6 7. Bd3 O-O 8. a4 e5 9. dxe5 Bxe5 10. Nge2 Be6 11.
O-O Nc6 12. Nf4 Bc4 13. Bxc4 Nxc4 14. Nd3 Bg7 15. Qe2 N6a5 16. Qc2 Nc6 17. Rd1
Qh4 18. b3 N4e5 19. Ba3 Rfd8 20. h3 Nxd3 21. Rxd3 {
Kolomvakis,S (1913)-Tsihlis,I (1471)/Heraklion 2016/CBM 172 Extra/1/2}) 7. bxc3
c5 8. f4 $146 ({RR} 8. Ne2 O-O 9. O-O ({RR} 9. h4 Nc6 10. Kf1 e5 11. Ba3 exd4
12. Bxc5 dxe3 13. Bxf8 Qxf8 14. h5 Ne5 15. Bd5 Ng4 16. hxg6 hxg6 17. Qb3 exf2
18. Rh3 Qe7 19. Rd1 Be5 20. Bxf7+ Kg7 21. Bd5 Nh2+ 22. Rxh2 Bxh2 23. Rd3 Bg4 {
Ribicic,M (2195)-Licardo,R (2185)/Zadar 1999/EXT 2000/1-0}) 9... Nc6 10. a4 ({
RR} 10. Bd2 e5 11. dxc5 Qa5 12. Qc1 Qxc5 13. Bb3 Na5 14. h3 Nxb3 15. axb3 Be6
16. Qb2 Rfd8 17. Rfc1 Qd5 18. Be1 Qxb3 19. Rab1 Qxb2 20. Rxb2 Bd5 21. Rd1 Bc6
22. Rbd2 Rxd2 23. Rxd2 a5 24. c4 a4 {
Gehl,H-Kemeny,M/Bad Segeberg 1995/EXT 2002/0-1}) 10... Qc7 11. Ba3 Na5 12. Bd5
Rd8 13. Bf3 c4 14. Ng3 Rb8 15. Rb1 b6 16. Qc2 Bb7 17. Ne4 Nb3 18. Rfd1 e6 19.
Be2 Rbc8 20. Nd2 Na5 21. e4 Bc6 22. Ra1 Nb3 {
Guarin,H (1894)-De la Roche,J (2111)/Medellin 2011/CBM 144 Extra/0-1 (47)})
8... O-O 9. Nf3 Nc6 10. O-O Bf5 11. Ne5 Na5 12. Bd3 Qc8 13. e4 Bd7 14. Be3 c4
15. Bc2 f5 16. Nxd7 Qxd7 17. exf5 gxf5 18. Qh5 Qe6 19. Rae1 Qh6 20. Qf3 Rad8
21. Kh1 Qh4 22. Qe2 Qg4 23. Rf3 Kh8 24. Qf1 Rd6 25. Rg3 1-0

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "5.6"]
[White "Georgiev, Nikolay Zh."]
[Black "Kolev, Nikola Vl."]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "1644"]
[BlackElo "1873"]
[PlyCount "44"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. Nc3 g6 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Be3 Qa5 7. Qd2 Nf6 8.
Nb3 ({RR} 8. f3 {RR} a6 9. Be2 d6 10. O-O O-O 11. Nxc6 bxc6 12. Nd5 Qxd2 13.
Nxe7+ Kh8 14. Bxd2 Bb7 15. Bb4 c5 16. e5 cxb4 17. exd6 Rad8 18. Rad1 Ne8 19. d7
Nf6 20. Nc8 Bxc8 21. dxc8=Q Rxc8 22. Rc1 a5 23. c3 {
Huber,M (1639)-Bilau,M (1645)/Willingen 2016/CBM 172 Extra/0-1 (31)}) 8... Qc7
9. f4 $146 ({RR} 9. f3 a6 10. Be2 d6 11. g4 Be6 12. O-O-O b5 13. Bh6 O-O 14.
Bxg7 Kxg7 15. h4 Ne5 16. h5 Ng8 17. hxg6 fxg6 18. Nd4 Qd7 19. Nd5 Bxd5 20. exd5
Rf7 21. f4 Nc4 22. Qc3 Nf6 23. Bxc4 bxc4 {
Metev,M (2009)-Kolev,N (1682)/Sofia 2014/CBM 163 Extra/1-0 (31)}) ({RR} 9. Be2
a6 10. O-O-O b5 11. f3 h5 12. f4 d6 13. h3 Be6 14. Nd5 Qb7 15. Bf3 Rc8 16. g4
a5 17. e5 Nxd5 18. Bxd5 Bxd5 19. Qxd5 dxe5 20. fxe5 Bxe5 21. Nc5 Qc7 22. Rhf1
Nd8 23. Rf2 hxg4 {Peurala,J-Louhivaara,J/Finland 2001/CBM 079 Extra/0-1 (37)})
({RR} 9. Bf4 d6 10. O-O-O Be6 11. Nc5 O-O 12. Nxe6 fxe6 13. Bc4 Nd8 14. Bb3 Ng4
15. h3 Rxf4 16. hxg4 Rxg4 17. f3 Rg3 18. Qf2 Rg5 19. Rd3 Qc5 20. Qxc5 Rxc5 21.
Ne2 h5 22. Kb1 Kf7 23. f4 a5 {
Krastev,K (2034)-Krastev,G (2016)/Sofia 2009/CBM 133 Extra/0-1 (48)}) 9... d6
10. Nd5 Qb8 11. Nxf6+ Bxf6 12. O-O-O O-O 13. Be2 Be6 14. h4 Bxb3 15. axb3 a5
16. Bb5 Na7 17. Bc4 Nc6 18. Kb1 a4 19. c3 Na5 20. Bd4 Nxb3 21. Bxb3 axb3 22. h5
{Äèàãðàììà #} Ra1+ 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "6.2"]
[White "Ignatov, Bojidar"]
[Black "Babatov, Martin"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1761"]
[BlackElo "1723"]
[PlyCount "63"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 5. g4 Bd7 6. f4 h5 7. gxh5 ({RR} 7. f5
hxg4 8. e6 fxe6 9. Qxg4 Qc8 10. Nf3 Nf6 11. Qg6+ Kd8 12. Ne5 Be8 13. Nf7+ Bxf7
14. Qxf7 e5 15. Bh3 Qc7 16. Nc3 Nbd7 17. Ne2 c5 18. c3 cxd4 19. cxd4 exd4 20.
Nf4 Nc5 21. O-O Rc8 {
Onischuk,V (2612)-Aronian,L (2784)/Berlin 2015/CBM 168 Extra/1-0 (89)}) ({RR} 
7. g5 Bg4 8. Be2 Bxe2 9. Nxe2 e6 10. Ng3 g6 11. Be3 Qb6 12. Qc1 c5 13. dxc5
Bxc5 14. Bxc5 Qxc5 15. Nc3 Ne7 16. Qd2 Nbc6 17. O-O-O Rc8 18. Nce4 dxe4 19.
Nxe4 Qa5 20. Nd6+ Kf8 21. Qxa5 Nxa5 {
Mihailidou,M (1466)-Andreev,D (1914)/Teteven 2016/CBM 173 Extra/0-1}) 7... Nh6
8. Be3 $146 ({RR} 8. Bh3 Bf5 9. Bxf5 Nxf5 10. Nf3 e6 11. Ng5 c5 12. dxc5 Bxc5
13. Rh3 Nc6 14. c3 a5 15. Qb3 Qb6 16. Na3 Bb4 17. Be3 Nxe3 18. cxb4 Qxb4+ 19.
Qxb4 axb4 20. Rxe3 bxa3 21. Rxa3 Rxa3 22. bxa3 Rxh5 {
Medvedev,S (1934)-Kharlamov,I (2043)/Omsk 2015/CBM 165 Extra/0-1 (32)}) ({RR} 
8. Nf3 Bg4 9. Be2 e6 10. Ng5 Bxe2 11. Qxe2 Nf5 12. Qg4 Qb6 13. c3 c5 14. Nd2
cxd4 15. Ndf3 Bc5 16. Nxf7 Kxf7 17. Qg6+ Ke7 18. Ng5 Kd7 19. Nf7 Nc6 {
0-1 Mai,P-Grund,H (2335)/Binz 1995/Juniors}) 8... Bg4 9. Be2 Bxe2 10. Qxe2 e6
11. Nd2 Be7 12. Bf2 Nf5 13. Qg4 Qb6 14. O-O-O a5 15. Ndf3 Nd7 16. Ne2 a4 17. a3
Ra5 18. Nc3 Qc7 19. Ng5 b5 20. Na2 Qb7 21. c3 c5 22. Nxe6 fxe6 23. Qg6+ Kf8 24.
Qxe6 Nh6 25. Rhg1 Ra6 26. Qh3 b4 27. cxb4 cxb4 28. Nxb4 Bxb4 29. axb4 Qc7+ 30.
Kd2 Nb6 31. Rc1 Nc4+ 32. Ke2 1/2-1/2

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "6.4"]
[White "Kolev, Nikola Vl."]
[Black "Ilieva, Ralitsa"]
[Result "1/2-1/2"]
[ECO "E90"]
[WhiteElo "1873"]
[BlackElo "1469"]
[PlyCount "42"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. Nc3 d6 5. e4 O-O 6. Be3 b6 7. Bd3 Bb7 8. O-O
c5 9. d5 e6 10. Qd2 Re8 11. Bh6 Bh8 12. Rfe1 Nbd7 13. Re2 Ng4 14. Bg5 Ndf6 15.
h3 Ne5 16. Nxe5 dxe5 17. f4 exd5 18. exd5 exf4 19. Rae1 Rxe2 20. Bxe2 Qd7 21.
Qxf4 Ne8 1/2-1/2

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "6.5"]
[White "Mavrodiev, Slav"]
[Black "Mladenov, Andrey"]
[Result "0-1"]
[ECO "B56"]
[BlackElo "1553"]
[PlyCount "36"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Nc3 d6 6. Nf3 g6 7. Be2 Bg7 8.
O-O O-O 9. h3 a6 10. Be3 b5 11. a3 Bb7 12. Nh2 Rc8 13. Ng4 Nxg4 14. Bxg4 e6 15.
f4 Na5 16. Qd3 Nc4 17. Rab1 Nxb2 18. Rxb2 Rxc3 0-1

[Event "182nd open MGU"]
[Site "Sofia"]
[Date "2017.02.26"]
[Round "6.6"]
[White "Lenkova, Lyubomira"]
[Black "Georgiev, Nikolay Zh."]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "1303"]
[BlackElo "1644"]
[PlyCount "31"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]

1. d4 d5 2. Bf4 c5 3. c3 cxd4 4. cxd4 Nf6 5. Nf3 Nc6 6. e3 Bf5 ({RR} 6... a6 7.
Bd3 Bg4 8. Nbd2 e6 9. a3 Bd6 10. Bg3 O-O 11. O-O Bxg3 12. hxg3 e5 13. dxe5 Nxe5
14. Be2 Nc6 15. Nb3 Qb6 16. Nfd4 Bxe2 17. Nxe2 Rfe8 18. a4 Rxe3 19. fxe3 Qxe3+
20. Kh1 Qh6+ 21. Kg1 {
Schwartzman,G (2510)-Kaidanov,G (2605)/Dallas 1996/EXT 2001/0-1 (40)}) 7. Bd3
Qa5+ $146 ({RR} 7... Bxd3 8. Qxd3 e6 9. O-O ({RR} 9. a3 Bd6 10. Bg3 Ne4 11. Nc3
Nxc3 12. Qxc3 O-O 13. Rc1 Rc8 14. Bxd6 Qxd6 15. O-O f6 16. Qd3 Rc7 17. Rc3 Rfc8
18. Rfc1 Ne7 19. Rxc7 Rxc7 20. Rxc7 Qxc7 21. Qc3 Qxc3 22. bxc3 Kf7 23. Kf1 Nc6
{Schreiber,T-Schaaf,A/Griesheim 1999/EXT 2000/0-1 (43)}) 9... Bd6 10. Qb5 Rb8
11. Bg5 O-O 12. Rc1 a6 13. Qe2 Rc8 14. Nbd2 Be7 15. a3 h6 16. Bh4 Nh5 17. Bxe7
Qxe7 18. Ne5 Nxe5 19. dxe5 g6 20. b4 Rc7 21. Nb3 Ng7 22. Nc5 {
Csala,I (2145)-Maher,C (1844)/Balatonboglar 2016/CBM 173 Extra/1-0 (54)}) ({RR
} 7... Bg6 8. O-O e6 9. Nc3 Bd6 10. Bg3 O-O 11. a3 a5 12. Rc1 Ne4 13. Bxd6 Qxd6
14. Nh4 f5 15. Nxg6 hxg6 16. Bxe4 dxe4 17. Qb3 g5 18. Rfd1 Ne7 19. Nb5 Qb6 20.
a4 Nd5 21. Qa3 Rad8 22. Qc5 {
Hoshino,K (1618)-Montufar Berrios,L (1805)/Shelton 2013/CBM 154 Extra/1-0 (60)}
) 8. Nc3 Bg4 9. a3 e6 10. O-O Be7 11. Nb5 O-O 12. Bc7 Bxf3 13. gxf3 b6 14. b4
Bxb4 15. axb4 Qxb4 16. Bd6 1-0