[WARNING: long, wonky post - consume at your own risk, preferably with alcohol.] The rules which govern opposite-coloured <Bi~s> in the middlegame and in the endgame differ, and are at times even contradictory. In the ending the presence of opposite-coloured <Bi~s> usually improves the defending side's drawing chances. In the middlegame opposite-coloured <Bi~s> strengthen an attack and increase the chances of its success.
(Mark Dvoretsky)
DON'T OPEN THE CAGE DOOR!!!
 click for larger view
A possible line from V Osnos vs G Ustinov, 1960 with black to move <Opposite colored Bishops are wonderful attacking weapons in the middlegame (or in endgames with many pieces remaining) since one Bishop can attack something that the other can't defend.> -- Jeremy Silman
<Opposite-coloured bishops might have notorious drawing tendencies in the endgame, but in the middlegame they can be a decisive factor for the player who is doing the attacking.> -- Danny Gormally
<In the middlegame, the presence of opposite-coloured bishops has a significant effect on the assessment of the position and the choice of plan. The more pieces are on the board, the harder it is for the weaker side to defend - a pure opposite coloured endgame is still too far off, and with it his drawing chances. The stronger side, utilising his extra bishop, has the possibility of including additional pieces in the attack also. At the same time, the advantage of the opposite-coloured bishops has a lasting character (because of the defender's inability to exchange bishops), and a lengthy defence often leads to errors and inaccuracies.> -- Alexander Panchenko, Mastering Chess Middlegames What is a ...<Bi~>? beautiful
individual
that
causes
harm
also eine <ausgebuffte <Rampensau>>! [Event "Belavenets mem op"]
[Site "Smolensk"]
[Date "1991.??.??"]
[White "Nikolenko, Oleg"]
[Black "Zakharevich, Igor"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2450"]
[BlackElo "2335"]
1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. c3 Bg4
8. h3 Bxf3 9. Qxf3 Qd5 10. Be2 e6 11. O-O Bd6 12. Qd3 Bc7 13. Bf3 Qd6 14. g3 h6
15. a4 O-O 16. b4 Qd7 17. b5 e5 18. Bg2 Rfe8 19. Rb1 e4 20. Qc2 h5 21. Re1 h4
22. gxh4 Qd6 23. Kf1 c5 24. dxc5 Qxc5 25. Bg5 Nd5 26. Bxe4 Nxc3 27. Bxb7 Rab8
28. Bc6 Re5 29. Rxe5 Bxe5 30. Re1 a6 31. Qf5 Qc4+ 32. Kg1 f6 33. Be3 axb5 34.
axb5 Nxb5 35. Be4 Nd4 36. Bxd4 Qxd4 37. Qh7+ Kf8 38. Bg2 Rb2 39. Qh8+ Ke7 40.
Qxg7+ Kd6 41. Qf8+ Kc7 42. Qe7+ Kc8 43. Qe8+ Kc7 44. Rc1+ Kb6 45. Qc6+ 1-0
 click for larger view= = =
Recently... N Pogonina vs The World, 2009 [Event "Pogonina vs. Chess.com"]
[Site "Chess.com"]
[Date "2009.12.23"]
[White "Pogonina"]
[Black "Chess.com" ; http://www.chess.com/votechess/game...
[Result "1:0"]
[WhiteElo "2200"]
[TimeControl "1 in 1 day"]
Position after <38....Qb7>  click for larger view = = = = =
Carlsen vs Dominguez Perez, 2007
Tarrasch vs Schlechter, 1911
I Rabinovich vs Botvinnik, 1926
J Sammour-Hasbun vs J Yedidia, 1996
R Nezhmetdinov vs Petrosian, 1954
Polgar vs Svidler, 2011
Karpov vs Kasparov, 1985 !!! Game of the year!
A Vitolinsh vs Tukmakov, 1962
Ivanchuk vs Short, 2011 -Q
K Spraggett vs Alsina Leal, 2011
V Akopian vs Kindermann, 2011
G Tallaksen Ostmoe vs Sadler, 2011
Grischuk vs A Graf, 2002
Le Quang Liem vs Dominguez Perez, 2011
Fischer vs Euwe, 1957
Zeng Chongsheng vs Lu Yijie, 2011
McShane vs Wang Yue, 2005
J Augustin vs A Lanc, 1975
Zhao Xue vs McShane, 2005
So vs Shirov, 2011
Shirov vs D Burmenko, 1986
Smeets vs D Brandenburg, 2011
Bird vs Burn, 1886
Kasparov vs Kramnik, 1994
Anand vs Bareev, 2004 ♕♗ vs ♖♖♗-!
Zhao Xue vs Lagno, 2011 ♕♗ vs ♖♖♗-! Not mentioned in Lasker's Manual (p.222), but Tarrasch missed the adhoc winning move <36.e5!!>  click for larger view
Manifold threats are Qxg6xh5, Qxg6/+Bc2 or ♙e5-e6-e7 --> Tarrasch vs Schlechter, 1911 = ♔ = ♕ = ♖ = ♘ = ♙ = And Now For Something Completely Different = ♔ = ♕ = ♖ = ♘ = ♙ = Would you be so kind to rename your game collection "Opposite color bi'*§%s" to something less offensive? We don't like to go into people's game collections to make changes, so I'll leave it up to you how you want to fix it. Thanks in advance. Regards,
Daniel Freeman
webmaster
<“If you are not willing to see more than is visible, you won’t see anything.”<>> Ruth Bernhard
<Okay, ♗♗, one of you has a pink slip in your hat... <<>>> Check this puzzle: http://mauriceashley.wordpress.com/... [Event "82nd ch-UKR 2013"]
[Site "Kiev UKR"]
[Date "2013.06.15"]
[Round "1.3"]
[White "Eljanov, Pavel"]
[Black "Baryshpolets, Andrey"]
[Result "1-0"]
[ECO "E97"]
[WhiteElo "2707"]
[BlackElo "2547"]
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Qc2 Nh5 10. Rd1 f5 11. Ng5 Nf4 12. Bxf4 exf4 13. c5 Kh8 14. Ne6 Bxe6 15. dxe6 Be5 16. Bf3 fxe4 17. Qxe4 Nf5 18. Rac1 Rb8 19. cxd6 cxd6 20. Nd5 Qe8 21. Nc7 Qe7 22. b3 Ng7 23. Bg4 Qg5 24. Qf3 h5 25. Bh3 Qh4 26. Qe4 g5 27. e7 Rf7 28. e8=Q+ Nxe8 29. Nxe8 Rxe8 30. Qg6 Rfe7 31. Bf5 g4 32. Qh6+ Kg8 33. Be4 Bg7 34. Bd5+ Kf8 35. Qh7 Rf7 36. Bxf7 Kxf7 37. Rc7+ Re7 38. Rxe7+ Qxe7 39. Qxh5+ Kf8
40. Qxg4 1-0
♗ - Ze rula of 32 skwarz
http://www.chess.com/blog/linlaoda/...
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