1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 dxc4 -OPEN CATALAN
Kramnik-Morozevich WCC 2007 Mexico Round 2



dxc4 5. Bg2 a6 6. Ne5 Bb4+ 7. Nc3 Nd5 8.O-O (POSITION BELOW AFTER 8.0-0)HERE WE HAVE AN INTERESTING VARIATION WHERE BLACK HAS A SLIGHT ADVANTAGE
({Rybka 2.3.2a mp 32-bit : 1)} 8... Nxc3 9. bxc3
Bxc3 10. Rb1 Qxd4 11. Qa4+ b5 12. Qc2 Qxe5 13. Bxa8 Qf6 14. Ba3 h5 15. Qe4 {
-0.16/17})


ANALYSIS POSITION AFTER ABOVE VARIATION ENDING AT 15.Qe4 WHERE BLACK HAS SLIGHT ADVANTAGE



POSITION AFTER 11....c6 HERE RYBKA LIKED THE VARIATION
({Rybka 2.3.2a mp 32-bit :} 12. bxc4 bxc4 13. e4 a5 14. a3 Bd6 15. Rd1 Bxe5 16.
dxe5 Bg4 17. Bb2 Bxd1 18. Rxd1 Qb6 {0.33/13})


POSITION AFTER ABOVE VARIATION ENDING AT 18....Qb6


POSITION JUST BEFORE THE 16....d3 BLUNDER HERE RYBKA LIKES: ({Rybka 2.3.2a mp 32-bit : 1)} 16... Qa5 17. Qe2
Bf7 18. c7 Ra7 19. cxb8=Q Rxb8 20. Bb2 Re7 21. Qd3 Bc5 22. Be4 Qxb5 23. Bxh7+ {
0.34/17})



POSITION ATER ABOVE VARIATION AVOIDING 16...d3 WITH THE MORE CORRECT 16...Qa5

THE INCORRECT 16...d3


AFTER 17.c7 RYBKA PREFERS ({Rybka 2.3.2a mp 32-bit : 1)} 17... Qd6 18. Qb2 Nc6 19. Bxc6 Rac8 20. Rb1 axb5
21. Be4 d2 22. Bxd2 Ba3 {0.74/15}) BUT THE MORE INCORRECT Qd4 WAS PLAYED THE POSITION IS VERY DIFFICULT AT THIS POINT

POSITION AFTER 22...Ba3 ANALYSIS


THE DEVASTATING  17.c7


POSITION AFTER 20...Rxa8 WHITE HAS DECISIVE ADVANTAGE


FINAL POSTITION AFTER 27.f3-THE ERROR SEEMS TO HAVE BEEN 16...d3 WHEN 16...Qa5 or Qc7 MAINTAINED THE BALANCE WITH WHITE HAVING A SLIGHT ADVANTAGE