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Subject: New main variation, Topalov seems to have an advantage again!

Author: Eelco de Groot

Date: 22:10:20 02/21/06

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[Event "MTel Masters"]
[Site "Sofia"]
[Date "2005"]
[Round "6"]
[White "Veselin Topalov"]
[Black "Viswanathan Anand"]
[ECO "E15"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2
Be7 7. Nc3 c6 8. e4 d5 9. Qc2 dxe4 10. Nxe4 Bb7 11. Neg5 c5
12. d5 exd5 13. cxd5 h6 14. Nxf7 Kxf7 15. O-O-O Bd6 16. Nh4
Bc8 17. Re1 Na6 {Maybe it is possible now to exchange the
Rook on h8 that could not participate later in the game,
and escape into a draw? Drawback is that pawn h6 becomes
more vulnerable, Bxh6 combined with the threat of Qg6. But
e6 is the key square writes Topalov so Black should try to
prevent White getting a piece on that square} (17... Re8
{!?} 18. Bc4 {may be the critical reply. Other moves just
do not look to me quite as good for White } (18. Bb5
{18.Rxe8 does not seem better } Rxe1+ 19. Rxe1 Kg8 {And now
at least } 20. Re6 {seems a little less dangerous than in
the game. An alternative could be } (20. Bc4 {but 20...Na6
or 20...Nbd7 should be enough for a draw }) 20... a6
21. Bc4 b5) 18... Kg8 (18... Rxe1+ 19. Rxe1 Kg8 {And White
still has an advantage with } 20. Bxh6 {+/-})
19. Qg6 { Crude but probaby the best bet for White, tension in the position is
mounting. Alternative but not as good } (19. Re6 { as in the game. } 19... b5
20. Bxb5 Rxe6 21. dxe6 Bxe6 {+/=}) b5 20. Bxh6 Re7 21. Bxb5 a6 {+/-}) 18. Re6
Nb4 19. Bxb4 cxb4 20. Bc4 {is how the
game continued } 1-0


With diagrams and computeranalysis, I think Shredder's PV after 1052 minutes,
after 18... Kg8, is finally convincing enough to make this a new main line,
uncertainty about 22.Bg5 as alternative in second part of the analysis as this
is not very deep yet;

[Event "MTel Masters"]
[Site "Sofia"]
[Date "2005"]
[Round "6"]
[White "Veselin Topalov"]
[Black "Viswanathan Anand"]
[ECO "E15"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2
Be7 7. Nc3 c6 8. e4 d5 9. Qc2 dxe4 10. Nxe4 Bb7 11. Neg5 c5
12. d5 exd5 13. cxd5 h6 14. Nxf7 Kxf7 15. O-O-O Bd6 16. Nh4
Bc8 17. Re1 Na6 {Maybe it is possible now to exchange the
Rook on h8 that could not participate later in the game,
and escape into a draw? Drawback is that pawn h6 becomes
more vulnerable, Bxh6 combined with the threat of Qg6. But
e6 is the key square writes Topalov so Black should try to
prevent White getting a piece on that square} (17... Re8
{!?} 18. Bc4 {may be the critical reply. Other moves just
do not look to me quite as good for White } (18. Bb5
{18.Rxe8 does not seem better } Rxe1+ 19. Rxe1 Kg8 {And now
at least } 20. Re6 {seems a little less dangerous than in
the game. An alternative could be } (20. Bc4 {but 20...Na6
or 20...Nbd7 should be enough for a draw }) 20... a6
21. Bc4 b5) 18... Kg8 (18... Rxe1+ 19. Rxe1 Kg8 {And White
still has an advantage with } 20. Bxh6 {+/-})
19. Qg6
---------------------------------------------------------------------------
[D]rnbqr1k1/p5p1/1p1b1n1p/2pP4/2B4N/1P4P1/P1QB1P1P/2K1R2R w - -

Engine: Shredder 9 UCI (200 MB)
gemaakt door Stefan Meyer-Kahlen



 22	512:44 	+0.14 	19.Dg6 Lg4 20.Lxh6 Te7 21.Lf4 Lxf4+ 22.gxf4 Txe1+ 23.Txe1 b5
24.Lxb5 Pbd7 25.Dg5 Pf8 26.Lc4 Dd6 (11.774.279.068) 382
 22	430:18 	+0.11 	19.Lc3 Pbd7 20.Te6 Pf8 21.Lxf6 gxf6 22.Pf5 Le5 23.De4 Kh8
24.Dg4 Pxe6 25.Dg6 Te7 26.dxe6 Lxe6 27.Pxe7 Dxe7 28.Dxh6+ Kg8 29.Dg6+ Kh8
30.Dh6+ Kg8 31.Dg6+ Kh8 32.Dh6+ (9.866.043.995) 382
 22	696:14 	+0.07 	19.Lxh6 Dc7 20.Lg5 Pbd7 21.Txe8+ Pxe8 22.Te1 Pdf6 23.Pg6 b5
24.Pe7+ Kh8 25.Pg6+ Kg8 26.Pe7+ Kh8 27.Pg6+ Kg8 (15.981.296.184) 382


23     1052:36 +0.43    19.Qg6 b5 20.Bxh6 Re7 21.Bxb5 a6
                        22.Bd3 Raa7 23.Kb1 Qe8 24.Qxe8+ Rxe8
                        25.Rxe8+ Nxe8 (24.418.268.974) 386

---------------------------------------------------------------------------

{Crude but probaby the best bet for White, tension
in the position is mounting. Alternative but not as good }
(19. Re6 {as in the game. } b5 20. Bxb5 Rxe6 21. dxe6 Bxe6
{+/=}) 19... b5 20. Bxh6 Re7 21. Bxb5 a6 {+/-})

---------------------------------------------------------------------------
[D]rnbq2k1/4r1p1/p2b1nQB/1BpP4/7N/1P4P1/P4P1P/2K1R2R w - -

Engine: Shredder 9 UCI (200 MB)
gemaakt door Stefan Meyer-Kahlen

17     22:27  +1.02    22.Bg5 Rxe1+ 23.Rxe1 Qa5 24.Kd1 (666.458.223) 494

17     26:04  +0.43    22.Bd3 Raa7 23.Kb1 Qe8 24.Qxe8+ Rxe8
                       25.Rxe8+ Nxe8 (766.596.712) 489

17     26:00  +0.38    22.Bc4 Raa7 23.f3 Qa5 24.Rxe7 Rxe7
                       25.Kb1 Re1+ 26.Rxe1 Qxe1+ 27.Bc1 Qe5
                       28.a3 Qe8 29.Qxe8+ Nxe8 30.Bb2 Nc7 (764.642.249) 489
---------------------------------------------------------------------------

18. Re6 Nb4 19. Bxb4 cxb4 20. Bc4 {is how the game continued } 1-0

 Eelco



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