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Главная страница Справка Коды ЭШД E40

Коды ЭШД

E37 E38 E39

E40

E41 E42 E43

E40

Код энциклопедии шахматных дебютов (ЭШД)

Описание

RU: Защита Нимцовича. Система Рубинштейна (4 e3)
EN: Nimzo-Indian: Rubinstein (4 e3): Unusual Black 4th moves

Ходы

1. d4 Кf6 2. c4 e6 3. Кc3 Сb4 4. e3 Кc6

Дебюты

Защита Нимцовича

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "1992.??.??"]
[Round "6"]
[White "Guliev, Sarhan"]
[Black "Pachman, Ludek"]
[Result "1-0"]
[ECO "E40"]
[WhiteElo "2470"]
[BlackElo "2370"]
[Annotator "Bulletin"]
[PlyCount "47"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CSR"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 5. Nge2 d5 6. a3 Bf8 $6 7. cxd5 exd5 8.
g3 h5 9. h3 Ne7 10. Bg2 Nf5 $2 (10... c6) 11. Nxd5 $1 Nxd5 12. e4 Nde7 13. exf5
Nxf5 14. O-O Bd6 15. Nf4 g6 16. Re1+ Kf8 17. b4 Kg7 18. d5 Re8 19. Bb2+ f6 20.
Qd2 Rxe1+ 21. Rxe1 Bxf4 (21... Bd7 22. Nxh5+ gxh5 23. Qg5+) 22. Qxf4 Kf7 23.
Rc1 Nd6 24. Bxf6 1-0

[Event "Candidates Tournament"]
[Site "Bled/Zagreb/Belgrade"]
[Date "1959.09.21"]
[Round "9"]
[White "Petrosian, Tigran V"]
[Black "Fischer, Robert James"]
[Result "1-0"]
[ECO "E40"]
[Annotator "Bulletin"]
[PlyCount "62"]
[EventDate "1959.09.07"]
[EventType "tourn"]
[EventRounds "28"]
[EventCountry "CRO"]
[SourceTitle "Candidates"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. a3 Bd6 $6 (5... Bxc3+ $5 6. bxc3 c5)
6. Nf3 O-O 7. c5 $1 Be7 8. b4 Ne4 9. Bb2 Nd7 10. Bd3 f5 11. Ne2 $1 Bf6 12. O-O
Qe7 13. Ne5 Nxe5 14. dxe5 Bg5 15. Bd4 {/\f2-f3} Bh6 16. f3 Ng5 17. c6 $2 b6 (
17... bxc6 18. Bc5 $16) 18. b5 {Bc8 has no squares.} a6 19. a4 axb5 20. axb5
Rxa1 21. Qxa1 Nf7 22. Qc3 Qh4 23. Ra1 Ng5 24. Qe1 Qh5 {Black has to hope for
some sort of attack, but there are no real attacking chances.} 25. Ra7 Qg6 26.
Kh1 (26. Rxc7 $2 Nxf3+ $17) 26... Qh5 27. f4 Ne4 28. Rxc7 g5 {attack??!} 29.
Bxb6 Kh8 30. Bxe4 fxe4 31. Bc5 Rg8 1-0

[Event "Olympiad-17 Final A"]
[Site "Havana"]
[Date "1966.11.11"]
[Round "7"]
[White "Gligoric, Svetozar"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "E40"]
[Annotator "Bulletin"]
[PlyCount "112"]
[EventDate "1966.11.04"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "CUB"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Yugoslavia"]
[BlackTeam "Czechoslovakia"]
[WhiteTeamCountry "YUG"]
[BlackTeamCountry "CSR"]

{Inf.2/546} 1. d4 e6 2. c4 Bb4+ 3. Nc3 Nf6 4. e3 Nc6 5. Bd3 e5 6. Nge2 exd4 7.
exd4 d5 8. c5 h6 9. O-O Bxc3 10. bxc3 O-O 11. Ng3 b6 12. Ba3 Re8 13. Qf3 Bg4
14. Qf4 Ne7 15. Rae1 Be6 16. Qc1 $1 bxc5 17. Bxc5 $16 Qd7 18. Qc2 h5 $2 19. Re5
Ng6 (19... h4 20. Nh5 $18) 20. Bxg6 fxg6 21. Qxg6 Bf7 22. Qg5 Ne4 23. Nxe4 dxe4
24. Rxe8+ Rxe8 25. a3 a6 26. h3 Qd5 27. Qg3 c6 28. Re1 Re6 29. Re3 Qf5 30. Qb8+
Kh7 31. Bd6 Rg6 32. Bg3 Bd5 33. Qa7 Bc4 34. Qe7 Re6 35. Qh4 Bd5 36. Kh2 Rf6 37.
Be5 Rg6 38. g4 Qg5 39. Qxh5+ (39. Qxg5 Rxg5 40. Kg3 $18) 39... Qxh5 40. gxh5
Rg5 41. Rg3 Rf5 42. Kg1 $2 (42. Rxg7+ Kh6 43. Rg6+ Kxh5 44. Rf6 $16) 42... Kh6
43. c4 Bxc4 44. Rg6+ Kxh5 45. Rxc6 Bb5 $14 46. Rc7 g5 47. Kg2 Rf3 48. Bd6 Rd3
49. Be7 e3 50. fxe3 Rxe3 51. d5 g4 52. h4 g3 53. Bd6 Kxh4 54. Rh7+ Kg4 55. Rg7+
Kf5 56. Bb4 Rd3 1/2-1/2

[Event "Leningrad & Moscow"]
[Site "Leningrad/Moscow"]
[Date "1939.01.03"]
[Round "1"]
[White "Reshevsky, Samuel Herman"]
[Black "Tolush, Alexander V"]
[Result "1-0"]
[ECO "E40"]
[Annotator "ChessBase"]
[PlyCount "59"]
[EventDate "1939.01.03"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "URS"]
[SourceTitle "HCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 {1)Chess 1938/39 vol.IV, p.291 2)Gordon,Stephen: Samuel Reshevsky. p.65}
Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 5. Bd3 e5 6. Nge2 O-O 7. O-O Re8 8. d5 Nb8 (
8... Ne7 9. a3 Bxc3 10. Nxc3 d6) 9. e4 a5 10. a3 Bf8 (10... Bc5) 11. Ng3 d6 12.
h3 g6 13. Be3 c5 $6 (13... Na6) 14. Qd2 $14 Nbd7 (14... Na6) 15. Bh6 Be7 (15...
Bxh6 $142 16. Qxh6 Kh8 17. Nb5 $14) 16. Nf5 $16 Nh5 17. Nxe7+ Qxe7 18. Be2 (18.
Nb5) 18... Ng7 $2 (18... Ndf6) 19. f4 $18 exf4 20. Qxf4 Rf8 21. Nb5 Ra6 22. Bg4
Ne5 $2 (22... Qe5 $142) 23. Bg5 f6 (23... Qe8 24. Nc7) 24. Bxf6 Rxf6 25. Qxf6
Qxf6 26. Rxf6 Bxg4 27. hxg4 Nxc4 28. Nc7 Rb6 29. Ne6 Nxe6 30. dxe6 1-0

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "11"]
[White "Szabo, Laszlo"]
[Black "Golombek, Harry"]
[Result "1-0"]
[ECO "E40"]
[Annotator "Ftacnik,L"]
[PlyCount "71"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 (4... O-O $142) 5. a3 Bxc3+ (5... Bxc3+)
6. bxc3 O-O 7. cxd5 (7. Bd3) 7... exd5 8. Bd3 Re8 (8... Bg4 9. Ne2 c5 10. O-O
Bh5 11. Rb1 (11. Ra2 $5) 11... Qc7 {Abramovic} (11... b6) 12. f3 Bg6 13. Nf4
Nc6 14. g4 Rad8 15. Rb2 Rfe8 (15... Bxd3 $142 16. Qxd3 Ne7) 16. g5 $1 Nh5 17.
Nxg6 fxg6 18. f4 Ne7 19. f5 $36) 9. f3 $1 (9. Ne2 Ng4 $1) 9... Nh5 {/\f5} (9...
c5 $142 10. Ne2 b6 11. O-O Ba6 12. Bxa6 Nxa6 13. Qd3 Qc8 $1 14. Bb2 cxd4 15.
cxd4 Nc7 16. Rfc1 Qd7 17. Ng3 Ne6 18. Re1 Rac8 19. Rad1 Qa4 20. Rd2 Qc4 21. Qb1
{Reshevsky-Fine/Hamilton/1941} Red8 $10) 10. Ne2 Qh4+ 11. g3 Qe7 (11... Qh3 12.
Kf2 {/\Ld2, Dc2, Tag1,Tg2 Szabo}) 12. O-O f5 (12... c6 $142 13. a4 {/\La3+/-})
13. c4 dxc4 (13... c6 14. cxd5 cxd5 15. Qb3) 14. Bxc4+ Kh8 (14... Be6 15. d5 $1
) 15. Qc2 Nf6 (15... Nc6 $142 {/\Sd8}) 16. Nf4 c5 17. d5 (17. Bb5 $5) 17... a6
18. a4 Nbd7 19. Bb3 (19. Qxf5 $5 b5 20. axb5 Nb6 21. Qc2 Nxc4 22. Qxc4 axb5 23.
Ng6+ hxg6 24. Qh4+ Kg8 25. Rxa8) 19... Ne5 20. Ba3 $1 (20. a5 c4) 20... b6 21.
a5 $18 g5 22. Ng2 (22. axb6 gxf4 23. Bxc5 Qg7 24. exf4) 22... Bb7 23. axb6 Bxd5
24. Bxd5 (24. Bxc5 $142 Bxb3 25. Bxe7 Bxc2 26. Bxf6+ Kg8 27. b7 $1 Rab8 28.
Bxe5 Rxe5 29. Rfc1 Bb3 (29... Bd3 30. Rc8+ Re8 31. Rxe8+ Rxe8 32. Rc1 $18) 30.
Rc8+ Re8 31. Rxe8+ Rxe8 32. Rb1 $18) 24... Nxd5 25. Qxc5 (25. Bxc5 $2 Rac8 (
25... Rec8 26. Bxe7 Rxc2 27. Bd6 $1) 26. Bxe7 Rxc2 27. Bxg5 Nxb6 $16) 25... Qb7
26. Bb2 {/\f4+-} Kg8 27. Bxe5 $1 (27. Qd4 Rad8 $1 28. f4 Nxf4 $19) 27... Rxe5
28. Ra5 Rae8 29. Qd4 $6 g4 (29... Nf4 $1 30. Qc4+ Qf7 31. Qxf7+ Kxf7 32. Rxe5
Nh3+ 33. Kh1 Rxe5 34. Rb1 Re8) 30. Nh4 (30. fxg4 Nxe3 31. Nxe3 Rxa5 32. Nxf5)
30... gxf3 31. Nxf3 Nxe3 32. Rxe5 Rxe5 33. Qxe5 Nxf1 34. Qe6+ Kg7 35. Nh4 $1
Nd2 36. Nxf5+ (36. Nxf5+ Kf8 37. Qf6+ Ke8 38. Ng7+ Kd7 39. Qe6+ Kd8 40. Qe8#)
1-0

[Event "URS-ch10 Final"]
[Site "Tbilisi"]
[Date "1937.04.15"]
[Round "3"]
[White "Lilienthal, Andor"]
[Black "Levenfish, Grigory"]
[Result "1/2-1/2"]
[ECO "E40"]
[Annotator "Ftacnik,L"]
[PlyCount "112"]
[EventDate "1937.04.13"]
[EventType "tourn"]
[EventRounds "19"]
[EventCountry "URS"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. a3 Bxc3+ 6. bxc3 Nc6 7. Bd3 e5 8.
Ne2 e4 9. Bc2 Na5 10. c5 (10. Bb3 b6 11. Ba2 Ba6 12. Qa4 Qe7 $17) 10... b6 $1
11. cxb6 axb6 12. O-O Bb7 13. Ng3 Re8 14. f3 exf3 15. gxf3 d5 16. Kh1 Nc4 17.
Rg1 g6 (17... Nxe3 18. Bxe3 Rxe3 19. Nf5 Rxc3 20. Rxg7+ Kf8 21. Qd2 Rxf3 22.
Qh6 $18) 18. Nf1 Nh5 (18... b5 {/\19... Qd6}) 19. Bd3 Nd6 20. Ra2 Ba6 $1 21.
Bxa6 (21. Bb1 Bc4 22. Ra1 (22. Rag2 Nb5) 22... Qh4 $17) 21... Rxa6 22. e4 dxe4
23. fxe4 Nf6 $2 (23... Ng7 $1 24. e5 Qa8+ 25. Rgg2 Ndf5 $15) 24. e5 Qa8+ 25.
Rgg2 $1 {[#]} (25. Rag2 Nde4 26. Qf3 $1 Ng4 27. Rxg4 Nf2+ 28. Kg2 Nxg4 29. Qxa8
Raxa8 30. Kf3 Nxe5+ 31. dxe5 Rxe5 $19) 25... Nfe4 {/\Ndb5} 26. Qd3 $1 $11 (26.
exd6 Nxc3 27. Qb3 Nxa2 $19) 26... Nf5 27. Rae2 $1 Nxc3 28. Qxc3 Nh4 29. Ng3 c5
30. Ne4 Nxg2 31. Nf6+ Kh8 32. Rxg2 cxd4 33. Qh3 $1 h5 34. Nxe8 $2 (34. Qg3 Re6
35. Qg5 Qf8 36. Nxh5) (34. Nxh5 $2 Qc8 $1 35. Nf4+ Qxh3 36. Nxh3 Rxe5) 34...
Qxe8 35. Qg3 Ra5 36. Bg5 $2 (36. Bb2 Rd5 37. Qf4 Qd7 38. Rd2 $18) 36... Kh7 37.
Bf6 Rc5 38. Rf2 Rc3 $1 39. Qg2 Rc1+ $1 40. Rf1 Rxf1+ 41. Qxf1 Qa8+ 42. Kg1 Qxa3
43. Bg5 Qb3 44. Qc1 b5 45. Qe1 Qf3 (45... b4 $2 46. Bd2) 46. Bd2 Qg4+ 47. Qg3
$2 (47. Kf1 $142) 47... Qd1+ 48. Qe1 Qg4+ $2 (48... Qxe1+ $142 49. Bxe1 g5 50.
Kf2 (50. Bf2 d3 51. Kf1 Kg6 52. Ke1 Kf5 53. Kd2 (53. Bd4 Ke4 54. Bc3 g4 $19)
53... Ke4 {/\g4-+}) 50... Kg6 51. Kf3 Kf5 52. Bg3 h4 $19) 49. Kf2 Qf5+ 50. Kg2
g5 $2 $18 51. Qe2 g4 52. Kg3 $1 (52. Qxb5 $2 Qf3+ 53. Kg1 Qd1+ 54. Qf1 Qxd2 55.
Qxf7+ $10) 52... Kg6 53. Bb4 Qb1 (53... d3 54. Qe3 Qf1 (54... h4+ 55. Kxh4 (55.
Kg2) 55... Qh5+ 56. Kg3 Qh3+ 57. Kf4 $16) 55. Qf4 $1 Qh3+ 56. Kf2 $16 Qf3+ 57.
Qxf3 gxf3 58. Kxf3 Kf5 59. Bc3 b4 60. Bxb4 Kxe5 61. Ke3 $18) 54. Bc5 Qb3+ 55.
Kf4 d3 56. Qe4+ Kg7 (56... Kg7 {[#]} 57. Bd4 d2 58. e6+ f6 (58... Kh6 59. Qa8
Qf3+ 60. Qxf3 gxf3 61. exf7 d1=Q 62. f8=Q+ Kg6 63. Qg7#) 59. e7 d1=Q 60. Bxf6+
$1 Kh6 (60... Kxf6 61. Qe5+ Kg6 62. e8=Q+ Qf7+ 63. Qf5+ Kh6 64. Qh8+ Qh7 65.
Qfxh7#) 61. Bg5+ Kg7 62. Qe5+ Kh7 63. Qf5+ Kg7 64. Qf6+ Kh7 65. Qh6+ Kg8 66.
e8=Q# {Chekhover}) 1/2-1/2

[Event "New York op"]
[Site "New York"]
[Date "1998.03.16"]
[Round "2"]
[White "Aleksandrov, Aleksej"]
[Black "Sulskis, Sarunas"]
[Result "0-1"]
[ECO "E40"]
[WhiteElo "2615"]
[BlackElo "2485"]
[Annotator "Ftacnik,L"]
[PlyCount "34"]
[EventDate "1998.03.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 064"]
[Source "ChessBase"]
[SourceDate "1998.06.02"]
[SourceVersion "1"]
[SourceVersionDate "1998.06.02"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Ne4 5. Qc2 f5 6. Bd3 O-O (6... Bxc3+ 7.
bxc3 O-O 8. Nf3 b6 9. Ba3 Nd6 10. O-O Bb7 11. Nd2 Rf6 12. f3 Rh6 13. Rf2 Nc6
14. Re1 Qh4 15. Nf1 Na5 16. c5 Nf7 17. e4 f4 {0-1 Mitenkov,A-Rashkovsky,N/
Moscow op2 1995 (32)}) (6... Nxc3 7. bxc3 Be7 (7... Ba5 8. e4 O-O 9. Nf3 d6 10.
O-O Nc6 11. Re1 Qf6 12. e5 dxe5 13. dxe5 Qg6 14. c5 b6 15. g3 Bb7 16. Nh4 Qf7 {
0-1 Steudtmann,C-Paehtz,T/DDR-ch 1982 (33)}) 8. e4 d6 9. exf5 exf5 10. Bxf5
Bxf5 11. Qxf5 Qd7 12. Qxd7+ Nxd7 13. Ke2 c5 14. Be3 O-O 15. Nf3 Nb6 16. Nd2
Rac8 17. Rab1 {1-0 Luckis,M-Reed Valenzuela,E/Mar del Plata 1944 (33)}) (6...
d5 7. Nge2 (7. f3 Qh4+ 8. g3 Nxg3 9. Qf2 dxc4 10. Bxc4 f4 11. Nge2 Nf5 12. Nxf4
Ke7 13. Rg1 g5 14. Nd3 Qxf2+ 15. Kxf2 Bxc3 16. bxc3 Nd6 17. Bb3 {Urbanec,
K-Podgorny,J/CSR-ch 1954/1-0 (50)}) (7. Nf3 O-O 8. a3 Bxc3+ 9. bxc3 c6 10. a4
b6 11. Ba3 Re8 12. Ne5 Ba6 13. O-O Nd6 14. Qe2 Bxc4 15. Nxc4 Nxc4 16. Bxc4 dxc4
17. Qxc4 Qd5 18. Qd3 b5 19. f3 Nd7 {1-0 Castillo,M-Poulsen,C/Dubrovnik olm
1950 (33)}) 7... O-O (7... c6 8. f3 Ng5 9. O-O O-O 10. Bd2 Nd7 11. e4 dxc4 12.
Bxc4 Nb6 13. Bb3 Kh8 14. Rad1 Bd7 15. Be3 Qe7 16. Nf4 c5 17. dxc5 Bxc5 18. Qf2
{1-0 Goehring,K-Hauke,C/BL2-S 1996 (31)}) 8. cxd5 (8. O-O c6 9. f3 Nxc3 10.
bxc3 Bd6 11. Bd2 Qh4 12. g3 Qh5 13. e4 fxe4 14. fxe4 dxe4 15. Bxe4 Qxe2 16.
Bxh7+ Kh8 17. c5 Be7 18. Rxf8+ Bxf8 19. Re1 {1-0 Muir,A-Dunworth,C/BCF-ch 1987
(24)}) (8. f3 Nxc3 9. bxc3 Bd6 10. c5 Be7 11. O-O b6 12. cxb6 axb6 13. e4 c5
14. exf5 exf5 15. Ng3 g6 16. Bf4 c4 17. Be2 Nc6 18. Qb2 g5 19. Bd2 f4 {0-1
Asgeirsson,A-Enevoldsen,J/Helsinki 1947 (31)}) 8... exd5 9. O-O Kh8 10. Qb3
Bxc3 11. bxc3 c6 12. c4 dxc4 13. Qxc4 Nd7 14. Qc2 Ndf6 15. Bb2 Re8 {1/2-1/2
Najdorf,M-Quinteros,M/Sao Paulo 1978}) 7. Nge2 b6 (7... d5 8. a3 Bxc3+ 9. bxc3
b6 10. cxd5 exd5 11. c4 dxc4 12. Bxc4+ Kh8 13. Nf4 c6 14. a4 Nd6 15. Bb3 a5 16.
h4 Re8 17. Bb2 b5 18. d5 Nc4 19. Bxc4 bxc4 20. Rd1 {1-0 Reshevsky,S-Kramer,G/
USA-ch 1957 (29)}) 8. O-O (8. Bxe4 fxe4 9. Qxe4 d5 $132) 8... Bxc3 9. Bxe4 (9.
bxc3 Bb7 10. f3 Nd6 $13) 9... fxe4 10. Nxc3 (10. Qxe4 $2 d5) 10... d5 11. b4 {
This move is risky, since it weakens the c4 square by the absence of white
squared bishop.} (11. b3 c6 12. Ba3 Rf7 13. Rac1 Nd7 $13) (11. cxd5 exd5 12.
Qb3 $5 c6 13. Nxe4 Ba6 14. Rd1 Qh4 15. Ng3 Nd7 16. e4 $16) 11... Nc6 12. Qb3 $6
(12. cxd5 Nxb4 13. Qb3 Nxd5 14. Nxe4 Ba6 15. Rd1 $13) 12... Ba6 $5 13. Qa4 $2 (
13. b5 Na5 14. Qa4 Bb7 15. Ba3 Rf7 16. c5 a6 $15) 13... Bxc4 14. Qxc6 (14. Rd1
Qf6 15. Rd2 Nxd4 $1 16. exd4 e3 $19) 14... Bxf1 (14... Qf6 $2 15. Nxe4 $1 Qg6
16. Ng3 Bxf1 17. Nxf1 $18) 15. Qxe6+ (15. Kxf1 Qh4 $1) 15... Kh8 16. Kxf1 Qh4 {
Black has sacrificed some material, but his attack looks very dangerously.
White pieces with an exception of the queen are not taking part in the play.}
17. Nd1 (17. g3 Qxh2 18. Ke1 (18. Nd1 Rxf2+ $1 19. Nxf2 Rf8) 18... Rxf2 19. Ne2
Rxe2+ 20. Kd1 Qf2 $19) (17. Ke1 Qxf2+ 18. Kd1 Qf1+ 19. Kc2 Rf2+ 20. Bd2 (20.
Kb3 Qc4+ 21. Ka4 a5 $19) 20... Rxd2+ 21. Kxd2 Qd3+ 22. Kc1 Qxc3+ 23. Kb1 Rf8
$19) 17... Rxf2+ $1 (17... Rxf2+ $1 18. Nxf2 (18. Kg1 Re2 19. Bd2 Re1+ 20. Bxe1
Qxe1#) 18... Rf8 19. g3 (19. Ke1 Qxf2+ 20. Kd1 Qf1+ 21. Kc2 Qd3+ 22. Kb2 Rf2+)
19... Qxh2 20. Ke1 Qxf2+ 21. Kd1 Qf1+ 22. Kc2 Qd3+ 23. Kb2 Rf2+) 0-1

[Event "FRA-chT Top 16 GpB"]
[Site "Cannes"]
[Date "2005.04.01"]
[Round "5"]
[White "Gurevich, Mikhail"]
[Black "Kogan, Artur"]
[Result "1-0"]
[ECO "E40"]
[WhiteElo "2634"]
[BlackElo "2592"]
[Annotator "Gurevich,M"]
[PlyCount "51"]
[EventDate "2005.03.31"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "FRA"]
[SourceTitle "CBM 105 Extra"]
[Source "ChessBase"]
[SourceDate "2005.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.05.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 5. Nge2 d5 6. a3 Bd6 7. c5 (7. Ng3 a6
8. cxd5 exd5 9. Bd3 Ne7 10. Qc2 O-O 11. O-O Re8 12. Bd2 Ng6 13. Nce2 Bd7 14.
Bb4 Bb5 15. Bxd6 Qxd6 16. Rac1 c6 17. Nc3 Bxd3 18. Qxd3 Ng4 $132 {1-0 Graf,
A-Delgado,N/Yucatan MEX 2004/The Week in Chess 529 (43)}) (7. cxd5 exd5 8. g3
Be6 9. Bg2 Qd7 10. h3 Ne7 11. b4 O-O 12. Nf4 Bxf4 13. exf4 Ne4 14. Nxe4 dxe4
15. Bxe4 Bd5 16. Bxd5 Nxd5 17. Kf1 {1/2-1/2 Vaisser,A-Kogan,A/France 2004/CBM
098 ext (17)}) 7... Be7 8. b4 (8. f4 a5 9. Rb1 b6 10. b4 axb4 11. axb4 bxc5 12.
bxc5 O-O 13. Ng3 Ba6 14. Bxa6 Rxa6 15. Qd3 Ra8 16. O-O Qd7 17. Bd2 Rfb8 $132 {
1/2-1/2 Milov,V-Rashkovsky,N/Moscow 2002/CBM 088 (45)}) 8... e5 9. Ng3 $5 {TN}
(9. Bb2 exd4 10. exd4 O-O 11. g3 Re8 12. Bg2 Bf8 13. O-O Ne7 14. Nf4 Bf5 15.
Re1 c6 16. Qd2 g6 17. Nd3 Bg7 18. Ne5 Qc8 19. Re2 Bh3 20. Bh1 Qc7 21. Rae1 h5
22. Bc1 Nf5 23. Qd3 Nd7 24. Bf4 Nxe5 25. Bxe5 Qd7 26. Bxg7 {1/2-1/2 Neverov,
V-Fedorchuk,S/Kiev 2001/EXT 2002 (26)}) 9... h5 $5 10. Bb5 $1 (10. b5 h4 11.
Nge2 exd4 12. exd4 Na5 13. Nf4 h3 $5 $132) 10... h4 11. Nge2 e4 (11... h3 12.
dxe5 hxg2 (12... Ne4 13. g3) 13. Rg1 Ng4 14. Rxg2 $36) 12. h3 Bf5 13. f3 $1 (
13. O-O g5 14. f3 exf3 15. Rxf3 Be6 {(/\16...g4|^>>)}) 13... Qd7 (13... exf3
14. gxf3 Qd7 (14... g5 15. e4 dxe4 16. d5 $36) 15. Nf4 g5 16. Nd3 $36) 14. fxe4
Nxe4 (14... Bxe4 $5) 15. Nxe4 Bxe4 16. O-O {[/\17.Nc3|^]} Rh6 $6 (16... Bf6 17.
Nc3 Bg6 18. Qf3 O-O-O 19. Ba4 Kb8 20. Bd2 Qe6 $132) 17. Nc3 Rg6 (17... Bxg2 18.
Kxg2 Rg6+ 19. Kf2 Qxh3 20. Ke1 $16) 18. Nxe4 $16 dxe4 (18... Qxh3 $5 19. Qf3 $1
(19. Qe2 dxe4 20. d5 Bf6 21. dxc6 O-O-O 22. cxb7+ Kb8 23. Ra2 Be5 24. Rf4 Qg3
$132) 19... Qxf3 20. Rxf3 dxe4 21. Rf4 h3 22. Ra2 $16) 19. Qh5 $1 Bf6 (19...
O-O-O $142 20. Rxf7 Qe6 21. Qf5 $16) 20. Qh8+ Ke7 21. Qxa8 $18 Qxh3 22. Ra2 Qg3
(22... Nd8 23. Rf4 $18) 23. Qxb7 Nxd4 24. Qxe4+ Be5 25. exd4 Qh2+ 26. Kf2 (26.
Kf2 Qg3+ 27. Ke2 Re6 28. d5) 1-0

[Event "CRO-ch 6th"]
[Site "Pula"]
[Date "1998.01.22"]
[Round "13"]
[White "Zaja, Ivan"]
[Black "Dizdar, Goran"]
[Result "1/2-1/2"]
[ECO "E40"]
[WhiteElo "2450"]
[BlackElo "2530"]
[Annotator "Hansen,LB"]
[PlyCount "71"]
[EventDate "1998.01.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CRO"]
[EventCategory "9"]
[SourceTitle "CBM 064"]
[Source "ChessBase"]
[SourceDate "1998.06.02"]
[SourceVersion "1"]
[SourceVersionDate "1998.06.02"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 $5 {This old move is rarely seen these
days. But it does have the advantage of avoiding some modern lines.} 5. Nge2 {
This move is often played after e.g. 4.-, c5, but here it is not dangerous for
Black. The only way to take advantage of 4.-, d5 is 5. a3!, after which Black
must choose between loosing a tempo by 5.-, Be7 or allowing the dangerous
Botvinnik variation by 5.-, Bc3. 6. bc3. In the Botvinnik variation Black
ususally refrains from an early d7-d5, as this gives White the opportunity to
open the centre for two Bs.} (5. a3 $1) 5... dxc4 $1 6. a3 Be7 (6... Ba5 $5 7.
Qa4+ c6 8. Qxc4 O-O 9. Ng3 Nbd7 10. f4 Nb6 11. Qd3 c5 $132 {Euwe,M-Capablanca,
J/Match/1938/}) 7. Qa4+ Nbd7 8. Qxc4 O-O 9. g3 e5 $1 10. Bg2 exd4 11. exd4 (11.
Nxd4 Ne5 $132) (11. Qxd4 Nc5 $132) 11... Nb6 12. Qd3 c6 13. Nf4 Bd6 14. O-O
Bxf4 $1 {In play against an isolated pawn a N is often better than a B. The N
on f4 controls the vital square on d5. Black is not afraid of the two Bs.} 15.
Bxf4 Be6 16. Rfe1 Nfd5 17. Bd2 Nxc3 18. Bxc3 (18. bxc3 Bd5 $15) 18... Qd7 19.
Re5 f6 20. Ree1 Bd5 21. f3 Rfe8 22. Rxe8+ Rxe8 23. Re1 Rxe1+ 24. Bxe1 Qe6 $15
25. Kf2 g5 26. h3 Nc4 27. Bc3 Nd6 28. g4 Kg7 29. Qe3 Qxe3+ 30. Kxe3 Nc4+ 31.
Kf2 Nb6 32. Bd2 Kf7 33. Bf1 Bc4 (33... Ke6 $5) 34. Ba5 $1 Bxf1 35. Bxb6 $1 Bxh3
(35... axb6 36. Kxf1 Ke6 37. Ke2 Kd5 38. Kd3 $11) 36. Bxa7 1/2-1/2

[Event "Beersheba 16th"]
[Site "Beersheba"]
[Date "1997.02.27"]
[Round "4"]
[White "Greenfeld, Alon"]
[Black "Mikhalevski, Alexander"]
[Result "1-0"]
[ECO "E40"]
[WhiteElo "2520"]
[BlackElo "2470"]
[Annotator "Knaak,R"]
[PlyCount "137"]
[EventDate "1997.02.24"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "ISR"]
[EventCategory "12"]
[SourceTitle "CBM 058"]
[Source "ChessBase"]
[SourceDate "1997.06.01"]
[SourceVersion "1"]
[SourceVersionDate "1997.06.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 Nc6 6. Nge2 d5 (6... e5 {
scheint mir dem Zug Nc6 besser zu entsprechen.}) 7. a3 dxc4 8. Bxc4 Bd6 $6 {
Erst hiermit wird Neuland betreten; allerdings wird der Lдufer sein Feld drei
Zьge spдter wieder rдumen.} 9. f4 $1 Nb8 10. e4 $16 Be7 11. e5 Nfd7 12. O-O c5
13. Be3 (13. d5 $6 Nb6) 13... Nb6 14. Ba2 Na6 15. dxc5 Nxc5 {Am weiЯen Vorteil
hat sich nichts geдndert; der Bc8 wird erst entwickelt werden, nachdem Schwarz
materiell im Nachteil ist.} 16. b4 Nca4 17. Nxa4 Qxd1 18. Rfxd1 Nxa4 19. Bb3
Nb6 20. Nc3 Rd8 {Es gibt keine andere Entwicklungsmцglichkeit.} 21. Bc5 $1
Bxc5+ 22. bxc5 Nd7 23. Ba4 Kf8 24. Rd6 Ke7 25. Rad1 h6 26. Ne4 a5 27. Bb5 a4
28. Kf2 Ra5 29. Nc3 f6 30. Ke3 fxe5 31. fxe5 Rxb5 $1 {Frьher oder spдter hat
Schwarz keine andere Wahl als die Qualitдt zu geben, denn die Bauernzьge am
Kцnigsflьgel sind endlich.} (31... Ra8 32. R1d4 Ra5 33. Kd2 Ra8 34. Kc2 Ra5 35.
Kb2 Ra8 36. Bxa4 Ra5 37. Bb3 {wдre eine mцgliche Variante.}) 32. Nxb5 Rf8 33.
c6 Nxe5 34. cxb7 Bxb7 35. R6d4 Bc6 36. Nc3 Bxg2 37. Rxa4 {Mit dem freien
a-Bauern soll WeiЯ gewinnen, aber der Weg ist lang und bedarf einer guten
Technik.} Rf3+ 38. Kd4 Nc6+ 39. Kc4 g5 40. Rd2 Bf1+ 41. Kb3 Bd3 42. Ra8 e5 43.
Rc8 Kd7 44. Rh8 Rh3 45. Ne2 e4 46. Nc1 Ke6 47. Nxd3 exd3 48. a4 Kd5 49. Kc3 Ne5
50. Rd8+ Kc5 51. Rc8+ Kd5 52. a5 Rh4 53. Ra2 Nc6 54. a6 Rc4+ 55. Kd2 Rh4 56.
Kc3 Rc4+ 57. Kd2 Rh4 58. Ke1 Re4+ 59. Kf2 Rf4+ 60. Kg3 Nd4 61. Rd8+ Ke6 62.
Re8+ Kf7 63. a7 Nf5+ 64. Kh3 Rf3+ 65. Kg2 Nh4+ 66. Kg1 d2 67. Rd8 Rf4 68. a8=Q
Nf3+ 69. Kh1 1-0

[Event "Moscow Aeroflot op-A"]
[Site "Moscow"]
[Date "2006.02.10"]
[Round "3"]
[White "Aleksandrov, Aleksej"]
[Black "Popov, Valerij"]
[Result "0-1"]
[ECO "E40"]
[WhiteElo "2653"]
[BlackElo "2592"]
[Annotator "Mueller,Karsten"]
[PlyCount "171"]
[EventDate "2006.02.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112"]
[Source "ChessBase"]
[SourceDate "2006.06.07"]
[SourceVersion "1"]
[SourceVersionDate "2006.06.07"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Ne4 5. Qc2 Nxc3 6. bxc3 Ba5 7. Ba3 d6 8.
Nf3 Nd7 9. Rd1 Qe7 10. Bd3 c5 11. O-O Bc7 12. Nd2 h6 13. f4 O-O 14. Rf3 b6 15.
Rdf1 Bb7 16. Rh3 Rae8 17. Bc1 d5 18. e4 dxe4 19. Nxe4 Nf6 20. Ng5 Rd8 21. Be3
Rd7 22. Kh1 Rfd8 23. Nf3 Ng4 24. Bc1 cxd4 25. Nxd4 Nf6 26. Re1 Bd6 27. Qe2 Qf8
28. Rg3 Kh8 29. Bc2 Ba3 30. Bd2 Bc5 31. Nb3 Ba8 32. Rh3 Kg8 33. Bc1 Qd6 34. Rg3
Kf8 35. h3 Kg8 36. Rd3 Qc6 37. Rg3 Qc7 38. Rf1 Bb7 39. Bb2 Ba6 40. Bc1 Bf8 41.
Nd2 Rxd2 42. Bxd2 Qxc4 43. Qxc4 Bxc4 44. Rf2 Bc5 45. Be3 Nh5 46. Rgf3 Bd5 47.
Bxc5 Bxf3 48. Bd4 Be4 49. Bb3 Ng3+ 50. Kh2 Nf5 51. Be5 Ne7 52. Re2 Bb7 53. Bd4
Bd5 54. Ba4 Nf5 55. Bf2 Bc4 56. Rb2 Rd3 57. Be1 Ne3 58. Rf2 h5 59. Rf3 Bd5 60.
Rf2 a6 61. Bc2 Nxc2 62. Rxc2 b5 63. Bf2 Be4 64. Re2 Bf5 65. Be1 Kh7 66. Bd2 Kh6
67. Kg1 Kg6 68. Kf1 Be4 69. Rxe4 Rxd2 70. a4 Rd3 71. axb5 axb5 72. Rb4 Rxc3 73.
Rxb5 Rc4 $1 {[%mdl 4096] Die weiЯe Strukur ist geschwдcht, was Schwarz
lehrbuchartig ausnutzt:} 74. g3 (74. Rg5+ Kh6 75. g3 Rd4 {[%cal Gd4d5]} (75...
h4 $2 76. Rg4 hxg3 $4 77. Rh4+ Kg6 78. f5+ $18 {[%cal Gh4c4]}) 76. Ra5 (76. Kf2
Rd5 77. Rxd5 exd5 78. Ke3 Kg6 79. Kd4 Kf5 80. Kxd5 h4 $19) 76... h4 77. Ra7 Kg6
78. Ra3 hxg3 79. Rxg3+ Kf6 80. Rg4 g6 81. Kf2 Kf5 82. Kg3 f6 $19) 74... h4 {
Die entscheidende Unterminierung.} 75. Rg5+ Kf6 76. Rg4 (76. Kf2 Rc2+ 77. Kf1
hxg3 78. Rxg3 g6 79. Rg5 Rc4 80. Rg4 Kf5 81. Rg5+ Ke4 82. Kf2 Rc3 $19) 76...
hxg3 77. Kg2 g6 78. Kxg3 Rc3+ 79. Kg2 Kf5 80. Rh4 Rc4 81. Kg3 f6 82. Rg4 (82.
Rh6 Rxf4 83. Rxg6 Kxg6 84. Kxf4 Kh5 85. Kg3 e5 $19) 82... g5 83. fxg5 Rxg4+ 84.
hxg4+ Kxg5 85. Kf3 e5 86. Kg3 (86. Kg3 e4 87. Kh3 Kf4 $19) 0-1

[Event "Bazna Kings 5th"]
[Site "Medias"]
[Date "2011.06.14"]
[Round "4"]
[White "Nakamura, Hikaru"]
[Black "Ivanchuk, Vassily"]
[Result "1/2-1/2"]
[ECO "E40"]
[WhiteElo "2774"]
[BlackElo "2776"]
[Annotator "Rogozenco,D"]
[PlyCount "97"]
[EventDate "2011.06.11"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "ROU"]
[EventCategory "21"]
[SourceTitle "CBM 143"]
[Source "ChessBase"]
[SourceDate "2011.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2011.07.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 {As usual Ivanchuk finds unexpected
ways to surprise his opponents. Although the move 4...Nc6 has been played many
time before, it is much less popular than the main continuations. Black's
intention is to follow up quickly with e6-e5.} 5. Bd3 e5 6. Nge2 d5 7. cxd5
Nxd5 8. e4 (8. O-O O-O 9. e4 Nb6 {is just a transposition to the same position
as in the game, but Nakamura's move order makes more sense, not allowing Black
to play 8...exd4.}) 8... Nb6 (8... Nxc3 9. bxc3 Bd6 10. O-O {is also slightly
better for White.}) 9. d5 Ne7 10. O-O O-O 11. Bg5 Kh8 {A mysterious king move.
As Ivanchuk explained later, he wanted to play ...f7-f6 and removed the king
from the dangerous diagonal.} ({The logical} 11... a6 {in order to keep the
dark-squared bishop alive has been played before, although even here White
keeps a more pleasant position. For example:} 12. Ng3 h6 13. Be3 Nd7 14. Rc1 {
Sherbakov,R (2510)-Kogan,A (2470)/Budapest 1994}) (11... c6 12. dxc6 bxc6 {
leads to a stable plus for White thanks to his superior pawn formation.}) 12.
a3 (12. Qb3 {looks more convincing:} Bd6 ({or} 12... Bc5 13. Nb5 $1 a6 14. Rac1
Bxf2+ 15. Rxf2 axb5 16. Bxb5) 13. Nb5 h6 (13... c6 14. dxc6 bxc6 15. Nxd6 Qxd6
16. Rfd1 {is clearly better for White.}) 14. Be3 {and unlike in the game Black
cannot continue 14...c6 in view of 15.Nxa7!. Also} f5 15. f3 f4 16. Bf2 g5 17.
a4 $5 {seems to be objectively better for White} ({or} 17. Rac1)) 12... Bd6 13.
Nb5 h6 ({After the immediate} 13... f6 14. Be3 c6 15. dxc6 Nxc6 16. Qb3 {
Ivanchuk didn't like that he cannot play} Be6) 14. Be3 c6 15. dxc6 Nxc6 16.
Nxd6 ({With the pawn on f7 the move} 16. Qb3 {obviously is met with} Be6) 16...
Qxd6 17. Qc2 Rd8 18. Rad1 Be6 19. Bb5 Qe7 20. Qc3 f6 {Ivanchuk gives up a pawn
and enters a four-rooks endgame, which the Ukrainian was pretty sure was a
draw.} (20... Rdc8 21. Bc5 Qg5 {was a perfectly playable alternative.} 22. b4
a6 23. Be3 Qf6 {and Black is okay.}) 21. Bxc6 bxc6 22. Bxb6 axb6 23. Qxc6 Rdc8
24. Qd6 (24. Qxb6 Rab8 25. Qd6 (25. Qa5 Rxb2 26. Ng3 Ra2 $11) 25... Qxd6 26.
Rxd6 Rxb2 27. Rxe6 Rxe2 {allows Black immediately to return the pawn.}) 24...
Qxd6 25. Rxd6 Bc4 26. Rd2 b5 27. f3 b4 28. axb4 Bxe2 29. Rxe2 Rab8 30. b3 Rxb4
31. Rb1 h5 32. Kf2 h4 33. Rbb2 Kh7 34. Re3 Kg6 35. Rd3 Kg5 36. Ke3 g6 37. Ra2
Rcb8 38. Ra3 f5 39. exf5 gxf5 40. Kd2 Kf4 41. Kc3 R4b7 42. Ra4+ e4 43. fxe4
Rxb3+ 44. Kc4 Rxd3 45. Kxd3 Rd8+ 46. Ke2 fxe4 47. g3+ hxg3 48. hxg3+ Kxg3 49.
Rxe4 1/2-1/2

[Event "Dortmund SuperGM 43rd"]
[Site "Dortmund"]
[Date "2015.07.04"]
[Round "6"]
[White "Caruana, Fabiano"]
[Black "Hou, Yifan"]
[Result "1-0"]
[ECO "E40"]
[WhiteElo "2805"]
[BlackElo "2676"]
[Annotator "Sagar Shah"]
[PlyCount "77"]
[EventDate "2015.06.27"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[EventCategory "19"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. a3 {Caruana is in an attacking mood today as
he goes for the a3 variation in the Nimzo. One cannot really say that this is
a Nimzo because the knight is still not on f6 and the pawn is on d5. But after
a few moves it transposes into the Nimzo-Indian.} Bxc3+ 5. bxc3 Nf6 6. e3 c6 $5
{This line is not played very often. Just around 70 games in the database. But
it is one of the favourite lines of Yu Yangyi, and was also played by Hou
Yifan against Lin in 2010 and Dzagnidze in 2011. The main idea for Black is to
0-0 and then follow it up with b6-Bb7 or Ba6.} (6... O-O {is the main line and
readers will recall the famous Botvinnik-Capablanca game that was played in
AVRO 1938.} 7. cxd5 exd5 8. Bd3 c5 9. Ne2 b6 10. O-O Ba6 {with a complex and
interesting battle.}) 7. a4 $5 {A wise move by Caruana. Not only can he
develop his bishop to a3 but a move like ...b6 can be met with a5 putting
pressure on the black queenside.} (7. Bd3 {was nicely countered by Yu Yangyi
against Aleksandrov with the move} e5 $1 8. dxe5 dxc4 9. Bxc4 Qxd1+ 10. Kxd1
Ng4 11. Ke1 Nxe5 12. Be2 Bf5 $11 {when Black had already equalised comfortably.
0-1 (91) Aleksandrov,A (2554)-Yu,Y (2675) Dubai 2014}) (7. Nf3 O-O 8. Bd3 b6 9.
O-O Ba6 $11 {0-1 (68) Dzagnidze,N (2516)-Hou,Y (2578) Beijing 2011}) 7... O-O
8. Nf3 b6 9. cxd5 exd5 {This is a much better recapture than taking with the
c-pawn because later Black can break with c6-c5.} (9... cxd5 {looks natural
but after} 10. Ba3 Re8 11. Bb5 Bd7 12. Bd3 Nc6 13. O-O $14 {White is just
better.}) 10. Bd3 (10. a5 Ba6 11. Bxa6 Nxa6 12. Ba3 Re8 13. O-O b5 $11) 10...
Ba6 $1 {Exchanging the strong d3-bishop is always a good idea for Black.} 11.
O-O c5 12. Ne5 (12. Bb5 Bxb5 13. axb5 {would retain some pressure for White.})
12... Re8 (12... Bxd3 13. Qxd3 Qc7 $11 {followed by Nc6 would have allowed
Black to equalize with ease.}) 13. a5 $1 Bxd3 14. Nxd3 $6 (14. Qxd3 {was the
most natural but after} c4 15. Qf5 Nbd7 $11 {Black has about equal chances.})
14... Nc6 $6 {An odd move by Hou Yifan. She could have comfortably developed
her knight to d7 but instead chooses this square in order to clarify the
situation with regards to the a5-pawn.} (14... Nbd7 $11 {was very comfortable
for Black.}) (14... c4 15. axb6 $5 Qxb6 (15... cxd3 16. b7 $18) 16. Nc5 a5 {
followed by Nbd7 should be around equal.}) 15. axb6 axb6 16. Rxa8 Qxa8 17. dxc5
bxc5 18. Nxc5 {Black has some compensation because the c1-bishop doesn't have
a good square to go to, but Hou Yifan has to play very accurately now to keep
her compensation alive.} Ne5 $6 (18... Ne4 $5 19. Nxe4 (19. Qxd5 $6 Re5 $1 20.
Qxe4 Rxe4 21. Nxe4 Qa5 $15) (19. Nd3 Nxc3 20. Qc2 Ne4 21. Bb2 $14 {White
should be better over here.}) 19... dxe4 20. c4 Ne5 21. Qd4 Qc6 22. c5 (22. Bb2
Qxc4 23. Rc1 Qxd4 24. Bxd4 Nd3 $11) 22... Nd3 23. Ba3 h5 {White is slightly
better but the knight is well placed and Black should have decent chances to
hold. In any case this would have been the best way for Black to play.}) 19.
Nd3 $1 {A strong move in order to relocate the knight to f4 and put pressure
on the d5 pawn.} Nc4 (19... Nxd3 20. Qxd3 Qc6 21. Ba3 Rc8 22. Bb4 $16) 20. Nf4
(20. Nb4 {was also possible.}) 20... h6 21. Qd4 {Centralizing the queen. Look
how little by little Caruana tries to improve his position to the fullest.} Re4
22. Qc5 Re5 23. f3 $1 {Taking away the crucial e4 square from the rook so that
the queen cannot be disturbed on d4.} Qa2 24. Qd4 {This is a clear case of
reaching maximum activity and seeing no real way to improve your already well
placed pieces. Black has her pieces well stationed but what next?} Qa4 25. h4
$1 {The logical plan now is to expand on the kingside. The f3-pawn does a
wonderful job of limiting the black pieces.} Qb5 26. g4 $1 {Hou Yifan would be
under tremendous pressure here. She is a pawn down and unable to improve her
position, while Caruana is slowly but steadily taking over.} Nd7 27. Nd3 Re6
28. Kg2 Ndb6 $6 {The knight has wandered away a little too far away from his
king to b6. Caruana now tries to attack the kingside and the weakest point i.e
g7.} (28... Nde5 {was the best and after} 29. Nb4 Rd6 30. h5 (30. Rd1 Rf6 $1)
30... Qd7 {Black is holding the position.}) 29. Nf4 Re5 30. Nh5 {The knight is
so menacingly placed on h5 that Black will have to give up her rook for it.
Threats include moves like f4 but maybe stronger is Nxg7 followed by f4.} Qb1 (
30... Qc6 31. f4 (31. Nxg7 $2 Qg6 $1 $17 {The knight is trapped on g7.} (31...
Kxg7 32. f4 $18)) 31... Rxh5 32. gxh5 Nd7 $44 {followed by Nf6. And the
arising position is quite funny. Black is a pawn and exchange down but has
pretty decent chances to hold the position thanks to his light squared control.
}) 31. e4 $1 {Hawk eyed Caruana does not let the opportunity slip by. He
forces a black pawn to the e4-square so that later he can play f4 and there
would be no Qe4+.} (31. f4 $6 Qe4+ 32. Kf2 Qxd4 33. cxd4 Re6 $14 {gives Black
some hopes to defend the inferior endgame.}) 31... dxe4 32. f4 $1 Rxh5 {
Black is forced to give up an exchange but she doesn't have enough
compensation for it. The rest is really a matter of technique for Caruana as
he quickly wraps up the game.} 33. gxh5 {The pawns look weak and clumsy but
they do not matter any more. The g7 point is too weak and with a rook quickly
coming on the open g-file, it will all be over pretty soon.} Qc2+ 34. Kh1 Qe2
35. Rg1 Qf3+ 36. Rg2 g6 (36... Qf1+ 37. Kh2 $18) 37. hxg6 Qf1+ 38. Kh2 Qxc1 {
The bishop on c1 never moved in the game. He died on the initial square but
after making sure that his side is winning the game.} 39. Qf6 {One could say
that Hou Yifan's play was not up to the mark in this game but what I found
amazing was Caruana playing extremely accurate chess. His manouevres of
Nc5-d3-f4, and expansion on kingside with h4 followed by g4 and the central
break e4 coupled with f4 were supremely high level concepts.} 1-0

[Event "Chengdu FIDE GP (Women)"]
[Site "Chengdu"]
[Date "2016.07.05"]
[Round "4"]
[White "Koneru, Humpy"]
[Black "Tan, Zhongyi"]
[Result "1-0"]
[ECO "E40"]
[WhiteElo "2575"]
[BlackElo "2495"]
[Annotator "Schulz,Andre"]
[PlyCount "67"]
[EventDate "2016.07.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "CHN"]
[EventCategory "11"]
[SourceTitle "CBM 174"]
[Source "ChessBase"]
[SourceDate "2016.09.13"]
[SourceVersion "1"]
[SourceVersionDate "2016.09.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 {A rather new approach. Black starts with the
Queen's Gambit Declined to reach Nimzo-Indian structures.} 4. e3 Nf6 5. a3
Bxc3+ 6. bxc3 c6 ({More popular is} 6... O-O {e.g.} 7. cxd5 exd5 8. Bd3 b6 9.
Ne2 Ba6 10. Bxa6 Nxa6 11. O-O c5 12. f3 Nc7 13. Ng3 Re8 14. Ra2 Nb5 15. Qd3 Nd6
16. Re2 Qd7 17. e4 Qb5 18. Qxb5 Nxb5 19. Bb2 Nd6 20. e5 Nc4 21. exf6 Rxe2 22.
Nxe2 Nxb2 23. dxc5 bxc5 24. Nf4 d4 25. cxd4 cxd4 26. Rb1 Nc4 27. Rb4 Nxa3 28.
Rxd4 Nb5 29. Rb4 Nc7 30. Rc4 Ne8 31. fxg7 Kxg7 32. Nd5 {1/2-1/2 (32) Jones, G 
(2625)-Wojtaszek,R (2727) Gibraltar 2016}) 7. a4 $5 ({The main moves are} 7.
Bd3) ({or} 7. Nf3) 7... O-O 8. Ba3 (8. Nf3 b6 9. cxd5 exd5 10. Bd3 Ba6 11. O-O
c5 12. Ne5 Re8 13. a5 Bxd3 14. Nxd3 Nc6 15. axb6 axb6 16. Rxa8 Qxa8 17. dxc5
bxc5 18. Nxc5 Ne5 19. Nd3 Nc4 20. Nf4 h6 21. Qd4 Re4 22. Qc5 Re5 23. f3 Qa2 24.
Qd4 Qa4 25. h4 Qb5 26. g4 Nd7 27. Nd3 Re6 28. Kg2 Ndb6 29. Nf4 Re5 30. Nh5 Qb1
31. e4 dxe4 32. f4 Rxh5 33. gxh5 Qc2+ 34. Kh1 Qe2 35. Rg1 Qf3+ 36. Rg2 g6 37.
hxg6 Qf1+ 38. Kh2 Qxc1 39. Qf6 {1-0 (39) Caruana,F (2805)-Hou,Y (2676)
Dortmund 2015}) 8... Re8 9. cxd5 (9. Nf3 b6 10. Bd3 Ba6 11. Nd2 Nbd7 12. O-O c5
13. Qb3 Qc7 14. h3 Rac8 15. Rac1 Qb7 16. Rfd1 e5 17. Bf1 cxd4 18. cxd4 exd4 19.
exd4 dxc4 20. Nxc4 Qd5 21. Qb4 Qa8 22. Qb1 Rcd8 23. Qf5 Nf8 24. d5 Ng6 25. d6
Bc8 26. Qc2 Bd7 27. Bb2 Ne4 28. Ne3 Nc5 29. Nd5 Bxa4 30. Qc3 Re5 31. Ne7+ {
1-0 (31) Bocharov,D (2595)-Karavade,E (2395) Moscow 2016}) 9... cxd5 ({Also
possible is} 9... exd5 10. Nf3 Bf5 $11) 10. Nf3 Nc6 11. Bd3 e5 12. dxe5 Nxe5
13. Nxe5 Rxe5 {Black now has an isolated pawn on d5 whereas White has a weak
pawn on c3. But the position opened and this suits the white bishops.} 14. O-O
Qc7 15. c4 {Using a tactical trick to open the position further.} Rh5 {This
seems to be a natural and active continuation but in the further course of the
game the rook is misplaced here.} ({But definitely not} 15... dxc4 16. Bd6 $1 {
and White wins.} Qxd6 $2 17. Bxh7+) 16. f4 dxc4 17. Bxc4 Qb6 (17... Qxc4 $4 {
is not possible because Black's back rank is too weak.}) 18. Qd2 Ne4 19. Qd4
Qxd4 20. exd4 Bd7 21. Rfe1 {White now is clearly better. After the exchange of
queens Black has no serious threats and the black pieces lack coordination.}
Re8 22. d5 $1 {Reminding Black that passed pawns can be strong.} Rh6 ({After} 
22... Bxa4 {White plays} 23. Bb4 {and if now} b5 24. Ba2 {it is not easy to
see how Black can stop the advance of the d-pawn.}) 23. a5 Rf6 {The rook
desperately tries to find a good square.} 24. g3 h5 25. Bd3 Nd6 26. Rxe8+ Bxe8
27. Rc1 Bb5 28. Bb1 {Threatening 29.Bxd6 Rxd6 30.Rc8+.} Bd7 29. Rc7 Bg4 ({Or} 
29... Be8 30. Bc2 a6 (30... Kf8 31. Rxb7) 31. Bxd6 Rxd6 32. Rc8 Kf8 33. Ba4 $18
) 30. h4 Bf5 31. Bxd6 Bxb1 32. Bb4 Rf5 33. d6 Rd5 34. d7 (34. d7 Kh7 35. Be7
$18) 1-0

[Event "MK Cafe Cup-A"]
[Site "Koszalin"]
[Date "1999.08.11"]
[Round "8"]
[White "Ibragimov, Ildar"]
[Black "Bologan, Viktor"]
[Result "1/2-1/2"]
[ECO "E40"]
[WhiteElo "2554"]
[BlackElo "2620"]
[Annotator "Wells,P"]
[PlyCount "98"]
[EventDate "1999.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 073"]
[Source "ChessBase"]
[SourceDate "1999.12.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.12.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 Nc6 $5 {The 'Two Knights Tango' can lead to a lot of fun if
white allows himself to be provoked. It seems that fewer and fewer are
encouraged to make the knights dance, and then it becomes a rather
transpositional opening. Here just another route to the Nimzo!} 3. Nf3 e6 4.
Nc3 (4. g3 Bb4+ 5. Bd2 (5. Nbd2 $5) 5... Qe7 {-> E11}) 4... Bb4 5. e3 O-O (5...
d6) 6. Bd3 d6 7. O-O Bxc3 8. bxc3 e5 9. Nd2 Re8 10. f3 b6 11. Nb3 Ne7 12. c5
Ng6 13. cxd6 cxd6 14. e4 h6 15. c4 Ba6 16. Be3 exd4 17. Nxd4 Ne5 18. Qa4 Qc8
19. Be2 Nxc4 20. Rfc1 d5 21. Bf2 Qb7 22. Rab1 Rab8 23. Nc6 b5 24. Nxb8 bxa4 25.
Rxb7 Bxb7 26. Bxa7 Nd6 27. Bc5 Ndxe4 28. fxe4 Rxb8 29. Bd6 Ra8 30. e5 Ne4 31.
Bb5 d4 32. Rc7 Bd5 33. Bd3 a3 34. Bb4 Nc3 35. Rd7 Bxa2 36. Bxa3 Bb1 37. Bxb1
Nxb1 38. Bc5 Nc3 39. Bxd4 Ne2+ 40. Kf2 Nf4 41. Kf3 Ne6 42. Be3 Ra5 43. Ke4 Ra4+
44. Kf3 h5 45. Ra7 Rb4 46. Ra8+ Kh7 47. Ra7 Kg6 48. g3 h4 49. Bf4 hxg3 1/2-1/2