[Event "Teplits-Schonau"]
[Site "?"]
[Date "1922.??.??"]
[Round "?"]
[White "Wolf"]
[Black "Rubinstein"]
[Result "0-1"]
[Annotator "03: Two Bishops V Two Knights"]
[FEN "r2n1r2/ppp1q1pk/3p1n1p/4p1p1/2BPP1P1/2P3BP/P1P2P2/R2QR1K1 b - - 0 1"]
[PlyCount "87"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The Knights in a closed position  It is evident that in a struggle against
the Bishop pair the two Knights will do best in a closed position such as this
one. Moreover, in this case the presence of the support point at f4 is a
factor which strongly favours the Knights. The practical outcome of such a
position is that White will have to look for a favourable moment to exchange
one of his Bishops for a knight, bringing about a Bishop versus Knight
struggle } 1... Nf7 2. Qf3 Rae8 ( 2... -- { White has the choice of three schemes:
  1. He can exchange on Bishop at once (Bxf7) and then undertake the fight
with good Bishop (3. Pf3!) against Knight  2. He can exchange the other Bishop
for a Knight as soon as it appears on f4, but then he will have a Bad Bishop
against Knight.  3. he can leave things as they are and keep both Bishops; but
in this case he must work out some way of getting them into action.   Scheme 1
is White's best choice } 3. Bxf7 Rxf7 4. dxe5 dxe5 5. Qf5+ ) 3. Qe3 b6 ( 3... -- 4. dxe5 dxe5 5. Qxa7 ) ( 3... exd4 4. cxd4 Nxe4 5. Qxe4+ Qxe4 6. Rxe4 Rxe4 7. Bd3 Re8 8. f3 $18 ) 4. Bb5 { Abadoning the possibility of scheme 1. } 4... Rd8 5. a4 Nh8 $1 { Black doesn't fear the opening of the a-file else he would have played Pa5 } 6. a5 Ng6 7. f3 Nf4 8. Bf1 Kh8 $1 9. Bxf4 { So White chooses scheme 3 and the
chances swing definitely in Black's favour.  If White puts his bishop on g1-a7,
it is obstructed by Black's b-pawn. If he works it round to a3-f8, Black will
play ... Pc5. In either case the Bishop bites on granite } ( 9. -- Rf7 10. -- Nh7 11. -- Nf8 12. -- N8g6 13. -- Rdf8 ) 9... gxf4 10. Qf2 { Closes up the
position still more, and fixes yet another pawn on the same colour as his own
bishop } 10... g5 11. d5 ( 11. axb6 $2 cxb6 ) ( 11. Bc4 ) 11... h5 12. Bg2 Kg7 13. Qe2 Rh8 14. Kf2 ( 14. Qa6 Kg6 15. Qxa7 Ra8 16. Qb7 Rhb8 17. Qc6 bxa5 ) 14... Ra8 15. Reb1 Nd7 16. Qb5 hxg4 17. hxg4 Nc5 18. Rh1 Rh4 $1 19. Rxh4 gxh4 20. Bh3 ( 20. -- h3 21. Bxh3 Qh4+ 22. Kg2 Qg3+ $19 ) 20... bxa5 { Getting a passed pawn on the a-file as well } 21. Qxa5 ( 21. Rxa5 a6 22. Qb1 Qd8 $17 ) 21... Qd8 22. Rb1 Rb8 23. Rb4 a6 24. Ke2 Rb6 25. Qa1 Kg6 26. Kd2 Kg5 { protects the h-pawn and an eventual Pg5 depriving White of any counterplay } 27. Rb1 ( 27. Qa5 Qb8 28. Qa3 ( 28. Ke2 Qa7 29. -- Nb7 30. Qa4 Rxb4 31. cxb4 Qe3+ ) 28... Qa7 29. Qa5 Nb7 30. Qa4 Rxb4 31. cxb4 Qf2+ ) 27... Qb8 28. Rh1 ( 28. Kc1 Rxb1+ 29. Qxb1 Qxb1+ 30. Kxb1 { lossed ending due to passed pawns on both flanks } 30... Na4 31. c4 Nc3+ 32. Kc1 Ne2+ 33. Kd2 Ng1 34. Bg2 h3 35. Bh1 a5 $19 ) 28... a5 $3 29. Bg2 ( 29. Qxa5 Rb2 30. Qa3 Nb3+ 31. Kd3 Qb5+ 32. c4 Qb6 ) 29... a4 30. Qe1 Qh8 31. Qc1 Ra6 32. Bf1 Ra8 33. Bc4 a3 34. Ba2 Qh7 35. Rh3 Nd7 36. Qf1 Qh8 37. Rh1 Nc5 38. Qc1 Rb8 $3 { Black sacrifi
ces both his passed pawns in order to force his pieces into the enemy position } 39. Qxa3 Ra8 40. Qb2 h3 41. Bc4 Qh4 42. Be2 Qf2 43. Rxh3 Qe3+ 44. Ke1 Na4 { The Knight gives the final blow. This game was honoured with a brilliancy prize } 0-1