[Event "Match"]
[Site "Mukachevo UKR"]
[Date "2010.08.17"]
[Round "5"]
[White "Efimenko, Z."]
[Black "Naiditsch, A."]
[Result "1/2-1/2"]
[ECO "C63"]
[WhiteElo "2689"]
[BlackElo "2684"]
[Annotator "Golubev, Mikhail"]
[PlyCount "52"]
[EventDate "2010.08.12"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 {A surprise. In the past Naiditsch hardly ever
played the Jaenisch-Schliemann Gambit with black. Though he has excellent
results with White against this system.} 4. Nc3 ({Another important line,
which was topical lately, is} 4. d3 fxe4 5. dxe4 Nf6 6. O-O Bc5 7. Qd3) 4...
fxe4 5. Nxe4 Nf6 6. Nxf6+ Qxf6 7. Qe2 Be7 8. Bxc6 bxc6 $5 ({The alternative
direction is} 8... dxc6 9. Nxe5 Bf5) 9. Nxe5 ({A more principled move is} 9. d4
$1 {where} exd4 $6 (9... Qg6 {with a sharp play}) 10. Bg5 Qe6 11. Qxe6 dxe6 12.
Bxe7 Kxe7 13. Nxd4 {is better for White.}) 9... O-O 10. O-O Qe6 11. Re1 Bc5 12.
Nf3 Qxe2 13. Rxe2 d6 $1 {It is very hard for White to use his extra pawn.} 14.
d3 ({Possibly White should prefer} 14. d4 $5 Bb6 {which was tested in several
games.}) 14... Bg4 15. Be3 Bb6 $146 ({After} 15... Bb4 {which was played
before, White maybe can try} 16. c3 (16. a3 Ba5 17. b4 Bb6 18. Bxb6 axb6 19.
Re7 Bxf3 20. gxf3 Rf7 21. Rxf7 Kxf7 22. a4 c5 $1 {was OK for Black in
Leko-Radjabov, Monaco 2007.}) 16... Ba5 17. d4 $5 {and if} Bb6 18. c4 {
threatening with c4-c5!. Curiously, both Efimenko and Naiditsch were unaware
of the Monaco game.}) 16. Bxb6 cxb6 $5 17. Re3 Bxf3 18. gxf3 Rf6 19. Rae1 Raf8
20. Re6 ({After} 20. Kg2 Rg6+ 21. Kf1 {Black can play} Rh6 ({though} 21... Rgf6
22. Ke2 Rh6 23. Rh1 {does not look too dangerous for him either.})) 20... Rxf3
21. Rxd6 Rxf2 22. Rxc6 h5 23. Rc7 R8f4 $5 ({Or} 23... h4 {where} 24. Ree7 Rf1+
25. Kg2 R8f3 26. Rxg7+ Kh8 27. Rh7+ Kg8 28. Rxh4 R1f2+ {is a draw.}) 24. Re4 ({
Playing for a win by} 24. h3 {is unsafe for White:} h4 {and Black has
attacking possibilities such as ...R2f3 at some point.}) 24... Rf1+ {Now the
game ends as the white king cannot escape from perpetual check.} 25. Kg2 R1f2+
26. Kg1 Rf1+ 1/2-1/2

[Event "Match"]
[Site "Mukachevo UKR"]
[Date "2010.08.18"]
[Round "6"]
[White "Naiditsch, A."]
[Black "Efimenko, Z."]
[Result "1/2-1/2"]
[ECO "C46"]
[WhiteElo "2684"]
[BlackElo "2689"]
[Annotator "Golubev, Mikhail"]
[PlyCount "108"]
[EventDate "2010.08.12"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 $5 ({Efimenko desperately needed to play for a
win, so he avoided the Four Knights Defence:} 3... Nf6) 4. Nxe5 Nxe5 ({Clearly
better for White is} 4... Bxf2+ 5. Kxf2 Nxe5 6. d4) 5. d4 Bd6 6. dxe5 Bxe5 7.
Nd5 {An extremely rare move.} ({One interesting continuation is} 7. Qd3 $5 Nf6
8. Bd2 O-O 9. O-O-O Re8 10. f3 c6 {which happened for the first time in
Bologan-Romanishin, Nikolaev Zonal 1995.}) 7... c6 8. Ne3 ({After} 8. Bf4 d6 $1
9. Bxe5 dxe5 {Black has a pleasant game.}) 8... Nf6 9. Bd3 (9. Bc4 $6 O-O 10.
Qd3 Re8 11. Qb3 (11. O-O Nxe4 $1) 11... d5 {with Black's advantage.}) ({Of
possible interest is} 9. Nc4 {and if} Nxe4 10. Qe2 {but Naiditsch did not want
even to think about such a sharp lines.}) 9... d5 10. exd5 cxd5 11. O-O O-O {
The white knight is misplaced on e3, so Black is somewhat better.} 12. c3 ({
The alternative was} 12. c4 $5) 12... Re8 13. Nf5 Qc7 14. h3 Ne4 15. Nd4 Qb6
16. Bc2 Bc7 17. Ne2 ({Instead,} 17. Nb5 Qxb5 18. Ba4 {can be played rather by
a computer. In this line White wins an exchange but Black develops a strong
initiative.}) 17... Qg6 $5 18. Qd3 {A practical decision. White loses a pawn,
but gets a position with the opposite coloured bishops and good chances for a
draw.} Bf5 $1 19. Nf4 Bxf4 20. Bxf4 Nxc3 21. Qxc3 Bxc2 22. Rac1 Rac8 {An
inaccuracy.} ({After the game Naiditsch pointed that he would have had more
problems after} 22... Be4 $1 {with the idea of} 23. f3 {(!?)} Bf5 {and then ...
Re2.}) 23. Rfe1 $1 Red8 24. Bc7 Be4 25. Qg3 (25. f3 $1 d4 $5 ({the main point,
missed by both opponents, is} 25... Rd7 26. Qb3 $3 Rdxc7 27. Rxc7 Rxc7 28. Qxd5
$1 $11) 26. Qa3 d3 27. Rxe4 ({possibly White holds also in the variation with} 
27. Bxd8 $5 d2) 27... Rxc7 ({or} 27... d2 28. Rd1 Rxc7 29. Rxd2 $11) 28. Rxc7
Qb6+ 29. Kh1 d2 30. Rd7 d1=Q+ 31. Rxd1 Rxd1+ 32. Kh2 $11) 25... Qxg3 26. Bxg3
Rxc1 27. Rxc1 d4 28. Bc7 Rc8 29. f3 Bg6 ({After} 29... Bb1 {Naiditsch planned
to continue} 30. a3 ({If} 30. Rxb1 Rxc7 31. Rd1 Rd7 {MG.}) 30... d3 31. Bf4 Bc2
{and now, say,} 32. Kf2 {with good chances for a draw.}) 30. Kf2 f6 31. Ke1 Kf7
32. Kd2 Ke6 33. h4 {Spectators (and also Efimenko after the game) tried
various options for Black in the analyses but, in short, nothing serious was
found.} Kd5 34. Bh2 Rxc1 35. Kxc1 Bd3 36. Kd2 Bf1 37. g4 g5 ({Here, for
example, no progress is achieved by Black after} 37... Bg2 38. Ke2 g5 ({If} 
38... d3+ 39. Kxd3 Bxf3 40. g5) 39. hxg5 fxg5 40. Kf2 ({or even} 40. Bc7 $5 d3+
41. Kxd3 Bxf3 42. Bd8 h6 43. Bf6 Bxg4 44. Bg7 h5 45. Bf6 Bf5+ 46. Ke3 g4 47.
Kf4 $11) 40... d3 41. f4) 38. hxg5 fxg5 39. Bc7 $1 {Planning Ba5 or Bd8-f6-g7.
Naiditsch gets a desired draw and wins the match by a narrow margin.} h6 40.
Ba5 Ke5 41. Ke1 Bc4 42. a3 Be6 43. Bb4 a6 44. Bf8 d3 45. Bxh6 Kf4 46. Kd2 Bc4
47. Kc3 Bb5 48. b4 Bc6 49. Kxd3 Bxf3 50. a4 Bxg4 51. Kd2 Bd7 52. a5 Bb5 53. Ke1
Kf5 54. Kf2 g4 1/2-1/2

