Mark Dvoretsky The Inst24.Pdf

The Instructor

The Usefulness of the

"Bad" Bishop

The Instructor

Mark Dvoretsky

In my July column at ChessCafe.com , I examined some

situations in which, contrary to accepted practice, one

should place one’s pawns on the same color squares as

his own bishop. Now we shall acquaint ourselves with

some more exceptions to the “bad bishop” rule.

Normally, a “bad bishop” is a serious drawback in one’s

position - but not always:

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Possession of the initiative sometimes can outweigh the

presence of a bad bishop - in fact, this bishop can

sometimes take an active part in an attack.

And on the defense, as GM M. Suba once noted,

sometimes “a bad bishop defends good pawns”

(although it would be more accurate to say “important”

or “necessary” pawns), and thus becomes a valuable

piece, which the stronger side is forced to exchange in

order to break through the defense.

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Mail:

Kimelfeld – Dvoretsky Moscow Team Championship

1972

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 5. d4 c5 6. dc

Nc6 7. Bf4 Bxc5 8. Bd3 f6 9. ef Qxf6!? 9...Nxf6 10.

Bg3 10. Bg5!? 10...0-0 11. 0-0 Nd4

Black must trade off the active enemy pieces: the bishop

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on d3 and the knight on f3. However, the straightforward

11..Nde5? fails against 12. Nxe5 Nxe5 13. Bxh7+!

12. Nxd4 Bxd4 13. Qe2

Order

School of Chess Excellence,

Volume 2:

Tactical Play

by Mark Dvoretsky

In Lein - Dvoretsky, Moscow Championship 1973,

White continued 13. Qd2 Nc5=. White’s move here aims

at the occupation of the e5 square.

13...Nc5 14. Rae1

White obtains nothing from 14. Nb5 Bxb2 15. Rab1 Bd7.

14...Nxd3 15. cd Bd7

Of course, Black is not even going to look at the win of a

pawn by 15...Bxc3? 16. bc Qxc3 - after 17. Be5, White

develops a powerful initiative. The “opposite-colored”

bishop can do little for the defense.

16. Be5 Bxe5 17. Qxe5 Qxe5 18. Rxe5

18...Ra8-c8=/+

Formally speaking, Black’s

bishop is bad; and if White

could manage to get his

knight to d4 (with a pawn at

f4 too), Black’s position

would become strategically

hopeless. But matters never

get that far, since it is Black

who has the initiative now. The threat of a rook invasion

at c2 after either d5-d4 or b7-b5-b4 is not easily

prevented.

19. f2-f4

The following variation is curious, although hardly

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forced: 19. d4 Rc4 (the immediate 19...b5!-/+ is

stronger) 20. Rd1 b5 21. Rd2 b4 22. Ne2 Rfc8 23. Kf1

Rc2 24. Ke1 Kf7 (intending Bb5) 25. Kd1? (25. Nf4 is

better) 25...Ba4! 26. b3?! (26. Rxc2 is forced: 26...Bxc2+

27. Ke1 Bf5, and Black has the initiative) 26...Rxa2! The

“bad” bishop has a decisive hand in the final

combination.

Many years later, the same variation occurred in a blitz

game I played with GM Raul Becerra (Miami 2000). My

opponent chose the cautious 19. Re2, which also failed

to quench Black’s initiative: 19...b5 20. Rfe1 b4 21. Nd1

Rc1 22. f3 (White hopes to find an appropriate moment

to bring the knight via f2 or e3 to g4, and thence to e5)

22...Rfc8 23. Ne3?! Bb5 24. Ng4 Bxd3 (also strong was

24...Rxe1+ 25. Rxe1 Rc2, or still more accurately

25...h5!, with 26...Rc2 to follow) 25. Rxe6 Bf5 26. Re8+

Rxe8 27. Rxc1 Bxg4 (27...Re2) 28. fg Re2 (either -/+ or -

+) 29. Rc7 a5 30. Ra7 d4 31. h4 (31. Rxa5 Rxb2 32. Rd5

Rxa2 33. Rxd4 b3-+) 31...Rxb2 32. Rxa5 d3 33. Rd5 d2

34. Kf1 Rxa2, and White resigned.

19...d5-d4! 20. Nc3-e2 Rc8-c2 21. f4-f5?!

Better was 21. Nxd4 Rxb2 22. Nxe6 Bxe6 (22...Bc6 23.

Rf2=; 22...Rc8 23. Nc5 intending Rf2=) 23. Rxe6=/+.

21...e6xf5 22. Ne2xd4 Rc2xb2 23. Rf1-c1

Black also has the advantage after 23. Re7 Rf7 24. Nxf5

Bxf5 (24...Kf8!? 25. Rxf7+ Kxf7 -/+) 25. Re8+ Rf8 26.

Rxf8+ Kxf8 27. Rxf5+ Ke7-/+.

23...g7-g6! 24. Rc1-c7

24. Rd5 Rf7 (24...Bc6!?)

24...Rf8-e8! 25. Nd4-f3

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25. Rxe8+ Bxe8 26. Ne6 Bc6 27. Rg7+ Kh8 28. Rc7 h5

29 Nf4 Kg8-+.

25...Re8xe5 26. Nf3xe5 Bd7-e6-/+

Sznapik – Bukal Zagreb 1979

Black not only has to trade

off the strong knight on d6,

but also get his light-squared

bishop into play. And for

this, he will not shrink even

from a pawn sacrifice.

19...Nb6-c4! 20. Nd6xc4?!

White should not have taken

the dare. After 20. Nxb7 Rfb8, he cannot continue 21.

b3? Rxb7 (21...Bb5!-+) 22. bc dc-+; and 21. Nc5 Rxb2-

/+ leaves him in a difficult position also. But 21. Nd6!

retains definite counterchances, whether after 21...Nxd6

22. ed Qxd6 (the e5 square), or after 21...Rxb2 22. Nxc4

dc 23. Qxc4 Rc8 24. Qa6 Rcc2 25. Qd6, with mutual

chances.

20...d5xc4 21. Qd3xc4 Bd7-c6-/+ 22. Qc4-d3 Rf8-d8

23. Rf1-d1 Rd8-d7 24. Qd3-e3 Ra8-d8 25. g2-g3 Qe7-

f7 26. Rd1-d3?!

26. Ne1 was better.

26...Qf7-h5 27. Qe3-f4

On 27. Rad1 f4! 28. gf Qg4+, intending Rf8, is strong.

27...Bc6-e4 28. Ra1-d1

The formerly “bad” light-squared bishop is now so

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terrifying, that White is prepared to give up a rook for it.

On 28. Re3 g5! 29. hg Rxd4 30. Rae1 Bc6-+ is decisive.

28...Be4xd3 29. Rd1xd3 Qh5-g4 30. Rd3-c3

30. Qe3 was more stubborn.

30...Qg4xf4 31. g3xf4 Rd7-d5 32. Kg1-f1 Rd5-b5-+

33. Rc2 Kf7 34. h5 Ke7 35. Ke2 Kd7 36. Kd1 Ra8! 37.

Nd2 Rb4 38. Nf3 a3 39. b3 Rxb3 40. Nd2 Rb4 White

resigned.

Saigin – Timofeev USSR 1948

White’s positional advantage

is obvious. The most natural

plan would involve a

kingside pawn advance.

However, if Black gets in

16...Bh4!, it will be very

difficult to break up the dark-

square blockade. This is why

White decided to exchange

off his proud knight at e4 for

Black’s “bad” bishop.

16. Ne4xf6+!! Nd7xf6 17. Ne2-c3+/- Nf6-h7

Now Black’s queen is ready to occupy h4, but White will

not allow it.

18. Qd1-e1! Ne8-c7 19. h2-h4 Bf7-e8

Black expects to get counterplay with 20...b5 - but he

won’t get that, either!

20. a2-a4! Be8-d7 21. Bg2-h3!

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