[Event "World-ch13 Alekhine-Bogoljubow +11-5=9"]
[Site "GER/NLD"]
[Date "1929.09.06"]
[Round "1"]
[White "Alekhine, Alexander"]
[Black "Bogoljubow, Efim"]
[Result "1-0"]
[ECO "D31"]
[Annotator "ChessBase"]
[PlyCount "51"]
[EventDate "1929.09.06"]
[EventType "match"]
[EventRounds "25"]
[EventCountry "GER"]
[SourceTitle "MainBase"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
{[%evp 0,51,19,31,19,-16,26,22,29,25,11,-14,61,27,27,6,-13,40,45,50,14,50,60,
76,86,105,106,66,220,221,210,221,214,179,157,106,182,161,184,205,365,357,342,
342,342,448,553,604,665,665,693,715,747,707]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4.
Nc3 dxc4 5. a4 e6 $2 (5... Bf5) 6. e4 Bb4 (6... c5 7. e5 Nd5 8. Bxc4 Nc6 9. O-O
cxd4 10. Nxd4 $1 Nxc3 (10... Nb6 11. Bb5 Bd7 12. Nxc6 Bxc6 13. Qg4 $16) 11.
bxc3 Nxe5 12. Bb5+ Bd7 13. Nxe6 $1 fxe6 14. Qh5+ Nf7 15. Rd1 $18 {
Müller-Meesen/corr/1936}) 7. e5 (7. Bg5 $6 Bxc3+ $1 (7... c5 $1) 8. bxc3 Qa5
$17 {Bogoljubow}) (7. Qc2 b5 8. Be2 Nbd7 9. O-O $36) 7... Nd5 $2 (7... Ne4 8.
Qc2 Qd5 9. Be2 c5 (9... O-O 10. O-O Nxc3 11. bxc3 Be7 12. Nd2 c5 13. Bxc4 Qd8
14. Qe4 {Alekhine-Helling,K/Dresden/1936/1:0/40}) (9... b5 10. O-O Bxc3 11.
bxc3 O-O 12. Ne1 $16 {Alekhine}) 10. O-O Nxc3 11. bxc3 cxd4 12. Nxd4 (12. cxd4
c3 13. Bd2 $1 $16 {/+- Alekhine-Euwe(19)/Wch16-NLD(Zeist)/1935/1:0/57}) 12...
Bc5 13. Nf3 Nd7 14. Rd1 Qc6 15. Bxc4 {Alekhine-Bogoljubow,E/Nottingham/1936/1:
0/47}) 8. Bd2 Bxc3 (8... b5 9. Ne4 Be7 10. b3 $1 $16 {Alekhine} Nd7 11. bxc4
bxc4 12. Bxc4 N7b6 13. Bb3 (13. Be2 a5 $14 {[%CAl Yd5b4] /\Nb4}) 13... Ba6 $14
{Kotov}) 9. bxc3 b5 10. Ng5 $1 f6 (10... h6 11. Ne4 O-O 12. Qh5 (12. Nd6 $16)
12... f6 (12... f5 13. Nd6 {[%CAl Yg2g4] /\g4->}) 13. Qg6 Kh8 14. Nd6 Qd7 15.
h4 $1 $40) (10... Nxc3 $4 11. Qf3 $18) (10... Qe7 $142) (10... O-O 11. Qb1 $1 {
[%CAl Ya4b5] /\12.ab}) 11. exf6 $1 (11. Ne4 fxe5 12. dxe5 O-O) 11... Nxf6 $2 (
11... gxf6 $1 12. Qh5+ Kd7 13. Ne4 Qe8 14. Qh4 Qg6 $14 {Bolbochan-Letelier/Mar
del Plata/1952}) (11... Qxf6 $2 12. axb5 cxb5 13. Ne4 Qe7 (13... Qh4 14. Nd6+
Kd7 15. g3) 14. Bg5 Qc7 15. Qh5+ g6 16. Qh6 $16) 12. Be2 a6 (12... O-O 13. axb5
h6 (13... cxb5 14. Bf3 Nd5 15. Qb1) 14. b6 $1 Qxb6 (14... hxg5 15. Rxa7 $1 $18)
15. Nf3 Ba6 16. Ne5 $18) 13. Bf3 $1 h6 $8 (13... Ra7 14. Bf4 Rb7 (14... Qb6 15.
Bd6 $16 {/+-() Kotov}) 15. axb5 axb5 16. Ra8 $40 {+- Alekhine} Bd7 17. Bd6 Qc8
18. Bh5+ g6 19. Qf3 Nd5 20. Qf7+ Kd8 21. Bf3 Re8 22. Qf6+ Nxf6 23. Nf7#) (13...
Nd5 14. Qc2 g6 15. Nxh7 Rxh7 16. Qxg6+ Rf7 17. Bh5 Qf6 (17... Raa7) 18. Qg8+
$18) 14. Bh5+ Nxh5 (14... Ke7 15. Nf7 Qe8 16. Nxh8 Nxh5 17. Qg4 $18) 15. Qxh5+
Kd7 16. Nf7 Qe8 17. Qg6 Rg8 18. Bf4 Bb7 (18... Rf8 19. Ne5+ Kd8 20. Qe4 {
[%CAl Ya4b5,Ye5c6] /\21.ab, 21.Nc6}) 19. Bg3 Ke7 20. Bd6+ Kd7 21. O-O {[%CAl
Yf2f5] /\f4-f5} c5 22. dxc5 Bd5 (22... Nc6 23. Rfd1) 23. axb5 axb5 24. Rxa8
Bxa8 25. Ra1 Nc6 (25... Bb7 26. Ra7 Kc8 27. Bg3 $18 {[%CAl Yf7d6] /\Nd6}) 26.
Ne5+ $1 (26. Ne5+ $1 Nxe5 (26... Kc8 27. Rxa8+) 27. Ra7+ Kc6 28. Qe4#) 1-0