Icannos/chess_studies huggingface dataset:
[Event "24"]
[Site "Zurich"]
[Date "1953.??.??"]
[Round "?"]
[White "Keres"]
[Black "Smyslov"]
[Result "0-1"]
[Annotator "16: Play on the Ranks"]
[FEN "2rq1rk1/pb2bppp/1pn1p3/3p4/2PP4/PPR2N2/1B3PPP/3QRBK1 w - - 0 16"]
[PlyCount "26"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ All that glitters is not gold } 16. Ne5 Nxe5 17. Rxe5 $2 { White goes in for
Rook operations on the third and fifth ranks, but these will be convincingly
refuted. Recapturing with the pawn was correct } ( 17. dxe5 ) 17... Bf6 18. Rh5 g6 19. Rch3 { A suprising move based on } 19... dxc4 $1 { Now Black threatens to take the Rook, since Be4 defends h7 } ( 19... gxh5 20. Qxh5 Re8 21. a4 $1 ) 20. Rxh7 c3 21. Qc1 Qxd4 22. Qh6 Rfd8 ( 22... -- 23. Rg7+ ( 23. Rh8+ Bxh8 24. Qh7# ) 23... Bxg7 24. Qh7# ) 23. Bc1 Bg7 24. Qg5 Qf6 25. Qg4 c2 26. Be2 Rd4 $1 27. f4 Rd1+ 28. Bxd1 Qd4+ 0-1
[Event "The Hague"]
[Site "?"]
[Date "1928.??.??"]
[Round "?"]
[White "Nilsson"]
[Black "Euwe"]
[Result "0-1"]
[Annotator "17: Struggle for Diagonals"]
[ECO "B24"]
[PlyCount "76"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Black storms with his Queenside pawns in order to control the long
dark-squared diagonal with his Bishop } 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 d6 6. O-O ( 6. d3 -- 7. Be3 { the threat of Pd4 } ) 6... Rb8 7. d3 { White's treatment of the opening has not been particularly exact. There was no
hurry to get castled; it would have been wiser to play Pd3 and Be3 with the
threat of Pd4 to keep Black busy. By neglecting this he allows Black's
operations to developsmoothly } 7... b5 8. Nd5 e6 9. Ne3 Nge7 10. c3 { Just about compulsorty } ( 10. Rb1 b4 11. Bd2 a5 { Black continues strongly } ) 10... b4 11. Bd2 O-O 12. Qc1 bxc3 13. bxc3 ( 13. Bxc3 Nd4 14. Bxd4 cxd4 15. Nc2 Qb6 { Black has a promising game, but at least White would have had
the advantage of keeping the dangerous diagonal closed } ) 13... Ba6 14. Qc2 Qa5 15. Rab1 Ne5 $1 16. c4 { Now Black's aim is achieved; the diagonal is definitely open } 16... Qa3 17. Bc3 N7c6 18. f4 Nd4 $1 { Forcing the following liquidation which is in Black's favour } 19. Bxd4 cxd4 20. fxe5 dxe3 21. exd6 Qxd6 22. Rxb8 Rxb8 23. Rb1 Rb4 $1 24. Rb3 ( 24. Rxb4 Qxb4 { Black's Queen has a chance to get to d2 or e1 } ) 24... Qb6 25. Bf3 Qa5 26. Nc1 ( 26. -- Rxb3 27. Qxb3 Qe1+ 28. Kg2 Qf2+ ) 26... Bd4 27. Kf1 e5 28. Rxb4 Qxb4 29. Nb3 Bc8 30. Ke2 a5 $1 { The decisive advance, compelling
White to abandon his positions so that the storm troops can infiltrate } 31. Nxd4 exd4 32. c5 a4 33. c6 a3 34. c7 Qb2 35. Kd1 Qa1+ 36. Ke2 Qg1 37. -- Qf2+ 38. Kd1 Qf1# 0-1
[Event "Moskva"]
[Site "Moskva"]
[Date "1936.??.??"]
[Round "8"]
[White "Capablanca"]
[Black "Lilienthal"]
[Result "1-0"]
[Annotator "17: Struggle for Diagonals"]
[ECO "A12"]
[PlyCount "107"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Involving various diagonals } 1. Nf3 d5 2. c4 c6 3. b3 Bf5 4. Bb2 e6 5. g3 Nf6 6. Bg2 Nbd7 7. O-O h6 8. d3 Be7 9. Nbd2 O-O 10. Rc1 a5 11. a3 Re8 12. Rc2 Bh7 13. Qa1 { "Doubling" on the diagonal - an idea typical of the so-called
hypermodern style, which originated around 1920 with the masters Reti and
Breyer. The centre was not occuped by pawn, but controlled from a distance by
long-range pieces } 13... Bf8 ( 13... Bd6 { more active } 14. -- e5 ) 14. Re1 Qb6 15. Bh3 Bc5 16. Rf1 Bf8 17. Rcc1 Rad8 18. Rfe1 Bc5 19. Rf1 Bf8 20. Bg2 Bd6 21. Ne5 { So far both sides have been groping for a plan of campain, but this
move prepitates a phase of battle for the diagonals } 21... Bxe5 22. Bxe5 Nxe5 23. Qxe5 Nd7 24. Qb2 Nf6 $2 { Black persevers with his waiting policy } ( 24... c5 $1 { striking at the centre } 25. cxd5 exd5 { opening the e-file } 26. Bxd5 Rxe2 ) 25. b4 $1 axb4 26. Qxb4 Qxb4 27. axb4 Ra8 28. Ra1 Nd7 29. Nb3 Kf8 30. Ra5 { An idea familiar to us from previous chapters. White
forces a clearing-up of the open file situation by occupying its furthest
available square } 30... dxc4 $2 { This exchange is grist ot White's mill, extending the range of his Bishop } ( 30... Ke7 { essential } ) 31. dxc4 Nb6 32. Rxa8 { A strong move, now that White can work with tactical devices } 32... Rxa8 33. Na5 Ra7 34. Rd1 Ke8 ( 34... -- 35. Bxc6 { threat of a Knight fork } 35... bxc6 36. Rd8+ Ke7 37. Nxc6+ ) 35. Nxb7 Rxb7 36. Bxc6+ Rd7 37. c5 { removing the guard } 37... Ke7 38. Bxd7 Nxd7 39. c6 Nb6 40. c7 Bf5 41. Rd8 e5 42. Rb8 Nc8 43. b5 Kd6 44. b6 Ne7 45. Rf8 Bc8 46. Rxf7 Nd5 47. Rxg7 Nxb6 48. Rh7 Nd5 49. Rxh6+ Kxc7 50. e4 Ne7 51. f3 Kd7 52. h4 Ke8 53. Rf6 Ng8 54. Rc6 1-0
[Event "Zurich"]
[Site "?"]
[Date "1934.??.??"]
[Round "?"]
[White "Alekhine"]
[Black "Roselli"]
[Result "1-0"]
[Annotator "17: Struggle for Diagonals"]
[FEN "2rq1r2/pb2npk1/1p1bpnp1/3pN2p/2PP1PP1/PP1B3P/1B1NQ3/2R2RK1 w - - 0 1"]
[PlyCount "5"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The long diagonal again } 1. c5 Bxe5 ( 1... bxc5 2. dxc5 Bxc5+ 3. Rxc5 $1 Rxc5 4. g5 { tactic based on a discovered check ... but more deeply the
struggle for the diagonals } ) 2. fxe5 Nd7 3. b4 { White's positional advantage is decisive } 1-0
[Event "Stolp"]
[Site "?"]
[Date "1934.??.??"]
[Round "?"]
[White "Lachmann"]
[Black "Muller"]
[Result "1-0"]
[Annotator "17: Struggle for Diagonals"]
[FEN "r3rbk1/p1q2pp1/1n5p/2pp4/4N3/1PQ3P1/PB2PP1P/3R1RK1 w - - 0 1"]
[PlyCount "15"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Yet another long diagonal combination } 1. Nf6+ $3 { Tactic based on the struggle for diagaonls } 1... gxf6 2. Qxf6 d4 { Shutting the dangerous diagoanl, but White was ready for this } 3. Rxd4 cxd4 4. Bxd4 Kh7 5. g4 $3 { Now Defence to Qh8+ } ( 5. Qh8+ Kg6 6. g4 { Black can save himself with a discovered attack on White's Queen } 6... Qxh2+ 7. Kxh2 Bd6+ ) 5... -- 6. Qh8+ Kg6 7. Qg8+ Bg7 8. Qxg7# 1-0
[Event "Budapest"]
[Site "?"]
[Date "1952.??.??"]
[Round "?"]
[White "Szabo"]
[Black "Keres"]
[Result "1-0"]
[Annotator "17: Struggle for Diagonals"]
[ECO "E19"]
[PlyCount "53"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ A characteristic finesse } 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 Be4 10. Bf4 d6 11. Qe3 Bb7 12. Rfd1 Nd7 13. b4 Nf6 14. a4 Qd7 15. a5 b5 $2 16. Ne5 $3 dxe5 17. dxe5 ( 17. Bxb7 exf4 $19 ) 17... Qc8 18. exf6 Bxf6 19. Rac1 Bxg2 { The outcome
of White's combination is that the enemy Queenside is seriously weakened,
especially in the c-file } 20. Kxg2 e5 21. Bg5 Bxg5 22. Qxg5 Qb7+ 23. Kg1 Rae8 24. cxb5 Qxb5 25. Qd2 Qa6 26. Qd3 $1 Qe6 27. Rxc7 1-0
[Event "Mahrisch-Ostrau"]
[Site "Mahrisch-Ostrau"]
[Date "1923.??.??"]
[Round "?"]
[White "Rubinstein"]
[Black "Hromadka"]
[Result "1-0"]
[Annotator "18: Converging Lines"]
[FEN "kb1r2r1/pp2qpp1/2p4p/P3p3/2B1Pn2/2PP1R1P/1PK2QP1/R5B1 w - - 0 23"]
[PlyCount "13"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ A potpourri of files and diaganals  What is the most important feature of
this position for White? Is it the open f-file? Is it the diagaonal from g1 to
the left? Is it the a-file which is yet to be opened? Will the half-open
d-file be valuable to Black?  The answers are given in the form of a sparkling
combination } 23. g3 $3 Nxh3 24. Rxf7 Qd6 ( 24... Nxf2 25. Rxe7 $16 { White's Rook control the seventh rank } ) 25. Qb6 $3 { One of the most staggering
moves in the whole of chess. Is it an accident that the only right square for
this move is b6, a sort of commont factor of all the lines and diagonals
mentioned above? Very definitely not! } 25... Rd7 ( 25... axb6 26. axb6+ Ba7 27. Rxa7+ Kb8 28. Rfxb7+ Kc8 29. Ba6 ) 26. Bc5 $1 { This is the reaal point } 26... Rxf7 27. Bxd6 Rf2+ 28. Qxf2 Nxf2 29. Bc5 $1 1-0
[Event "Nottingham"]
[Site "Nottingham"]
[Date "1936.??.??"]
[Round "?"]
[White "Alekhine"]
[Black "Bogolyubov"]
[Result "1-0"]
[Annotator "18: Converging Lines"]
[FEN "4r3/p1qnrk1p/1p2ppp1/1P6/3B1PP1/2P2Q2/4R2P/4R1K1 w - - 0 35"]
[PlyCount "25"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Explosion at the crossroads } 35. g5 $1 fxg5 ( 35... f5 36. h4 ) 36. f5 $3 { A highly unexpected move, which suddenly throws the emphasis on files and
diagonals hitherto unused } 36... Qf4 ( 36... exf5 37. Qd5+ Kf8 38. Bg7+ { Overloaded King } ) ( 36... gxf5 37. Qh5+ Kf8 38. Qh6+ Kg8 39. Qxg5+ ) ( 36... e5 37. Qd5+ Kf8 38. Qc6 $1 { With the idea of Queening the c-pawn after the
exchanges on the e-file. d8 will be unavailable for the King! } 38... Qxc6 39. bxc6 exd4 40. Rxe7 Rxe7 41. Rxe7 Kxe7 42. c7 { All sorts of apparently chance
features play a part in this combination - various open files and diagaonals
and even the support point at c6 } ) 37. fxe6+ Rxe6 38. Qd5 ( 38. Qh3 Qh4 39. Rf1+ Kg8 40. Rxe6 { Also leads to a win (Alekhine) } ) 38... Nf6 39. Bxf6 Qg4+ 40. Rg2 Qf5 41. Be5 ( 41. Qc4 $2 Qc5+ $19 ) 41... Kg8 42. Rf2 Qg4+ 43. Kh1 h5 44. Rg1 Qh4 45. Rf6 Kh7 46. Rxe6 Rxe6 47. Qd7+ 1-0
[Event "England"]
[Site "It, Nottingham"]
[Date "1936.??.??"]
[Round "?"]
[White "Botvinnik"]
[Black "Vidmar"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[ECO "D60"]
[PlyCount "47"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The strength of the isolated d-pawn } 1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Bg5 Be7 5. Nc3 O-O 6. e3 Nbd7 7. Bd3 c5 8. O-O cxd4 9. exd4 dxc4 10. Bxc4 Nb6 $2 { In accordance with the principle of controlling as quickly as possible the
square in front of the isolated pawn - in this case d5. } ( 10... a6 11. a4 Nb6 { White's weakened b4 square would have provided extra counterchances for Black } ) 11. Bb3 { It is very important to maintain the Bishop on this diagonal, as the
following play will make clear } 11... Bd7 12. Qd3 Nbd5 $2 { With this move
, admittedly Black occupies the vital d5 square; but at the same time he is
neglecting another important requirement - the need to simplify } ( 12... Nfd5 $1 13. Bc2 ( 13. Ne4 Ba4 ) 13... g6 ) 13. Ne5 Bc6 14. Rad1 { It is always difficult
to judge how to make the best use of the Rooks in a case like this. They could
be planted on the open file (c and e), but then the weakness of the d-pawn
stands out  Another placing would be c1 and d1; but the ideal arrangement is
that chosen by Botvinnik. It will soon become clear why the Rook is best left
at f1 } 14... Nb4 { This merely drives the Queen to a better square } ( 14... Rc8 15. Nxc6 Rxc6 { Starting operations on the c-file } ) ( 14... Qa5 15. -- Nxc3 16. bxc3 Ba4 { simplifying } ) 15. Qh3 Bd5 16. Nxd5 Nbxd5 $2 { After this move, the White attack breaks with full intensity } ( 16... Nfxd5 17. Bc1 Rc8 ) 17. f4 $1 { Played at the right moment } 17... Rc8 ( 17... g6 18. Bh6 Re8 19. Ba4 { trapping the Rook } ) ( 17... Ne4 18. Nxf7 Rxf7 ( 18... Kxf7 19. Rde1 $40 ) 19. Qxe6 ) 18. f5 exf5 19. Rxf5 { Now it is clear why the Rook stayed
on f1, and what an important duty awaited the Bishop on b3. The White pieces
now work together like components of a well-oiled machine } 19... Qd6 { Giving his opponent the opportunity to force the game prettily } ( 19... Rc7 20. Rdf1 a6 ( 20... Nb6 21. Qh4 Nbd5 22. Nxf7 Rxf7 23. Bxd5 Nxd5 24. Rxf7 Bxg5 25. Qxg5 { Overloaded Queen } ( 25. Rf8+ Qxf8 26. Rxf8+ Kxf8 27. Qxg5 ) ) 21. Nxf7 Rxf7 22. Bxd5 Nxd5 23. Rxf7 Bxg5 24. Qe6 $1 { Panov } ) 20. Nxf7 $1 { Always this same
sacrifice. It is no accident that the offer is made on the square where the
lines of action of the Rooks and Bishop meet. In problem terminology, this is
a cutting-point, so we may describe this as a cutting-point combination } 20... Rxf7 ( 20... Kxf7 21. Bxd5+ ) 21. Bxf6 Bxf6 ( 21... Nxf6 22. Rxf6 Bxf6 23. Qxc8+ ) 22. Rxd5 Qc6 23. Rd6 $1 ( 23. Rc5 $2 Bxd4+ ) 23... Qe8 24. Rd7 1-0
[Event "It"]
[Site "Nottingham (England)"]
[Date "1936.??.??"]
[Round "?"]
[White "Flohr"]
[Black "Vidmar"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[ECO "D62"]
[PlyCount "115"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The weakness of the Isolated d-pawn } 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2 c5 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Bd3 g6 12. dxc5 Nxc5 13. O-O Bg4 14. Nd4 Rac8 15. Qd2 a6 16. Bc2 Qg5 { A comparision with the previous example shows that the player fighting agains
the isolated d-pawn has already achieved two successes  1) He has occupied the
blockade square with a Knight  2) He has exchanged two pairs of minor pieces 
We shall now see to what extent White's advantage is capable ofexpansion } 17. f3 { This weakens the e-pawn, but on the other hand it takes control of the e4
square. This square had the potential to form the basis of a Kingside attack
by the opponent } 17... Bd7 18. Rfe1 Rfd8 19. Rad1 Qf6 20. Bb3 Ba4 $1 { Correct, Black gets rid of his bad Bishop } 21. Bxa4 Nxa4 22. Rc1 Nc5 23. Red1 Qb6 24. Ne2 { Beginning the direct attack on the weak d-pawn } 24... Nd7 { With a counter-attack against the c-pawn } 25. Qd4 Qxd4 26. Nxd4 { Everything
ceeds according to plan. White has preserved his advantage into the endgame } 26... Ne5 27. b3 Kf8 28. Kf1 Rxc1 29. Rxc1 Nc6 30. Nxc6 { Although White has
been able to make things go just as he wished, it is still doubtful whether he
could have achieved more than a draw after Ke7. Now he has the opportunity to
transfrom one type of advantage into another } 30... Rc8 31. Rc5 { Black had reckoned on recapturing with the Rook, but now finds this impractible } 31... bxc6 { The Black d-pawn is no longer isolated, but instead Black is
saddled with an isolated a-pawn, together with a backward c-pawn. These two
handicaps between them are quite decisive } ( 31... Rxc6 32. Rxd5 Rc1+ 33. Ke2 Rc2+ 34. Rd2 ) 32. Ke2 Ke7 33. Kd3 Kd6 34. Ra5 Ra8 35. Kd4 f5 36. b4 Rb8 37. a3 Ra8 38. e4 fxe4 39. fxe4 dxe4 40. Kxe4 Ra7 41. Kf4 h6 42. h4 Ke6 43. Kg4 Ra8 44. h5 g5 45. g3 Ra7 46. Kf3 Ra8 47. Ke4 Ra7 48. Kd4 Kd6 49. Ke4 Ke6 50. Re5+ Kd6 51. Re8 c5 52. Rd8+ Kc6 53. Rc8+ Kb6 54. Rxc5 Rh7 55. Re5 Kc6 56. Re6+ Kb5 57. Kf5 Rf7+ 58. Rf6 1-0
[Event "Munich"]
[Site "?"]
[Date "1941.??.??"]
[Round "?"]
[White "Stoltz"]
[Black "Richter"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[ECO "D40"]
[PlyCount "63"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The significance of the third rank } 1. e4 d5 2. exd5 Nf6 3. c4 c6 4. d4 cxd5 5. Nc3 e6 6. Nf3 Be7 7. Bd3 O-O 8. O-O dxc4 9. Bxc4 Nc6 10. Be3 Bd7 11. Qe2 Nb4 12. Ne5 Nbd5 13. Bg5 Bc6 14. Rad1 h6 15. Bc1 Rc8 16. Bb3 Bb4 17. Rd3 { This Rook protects the Nc3, but even more important, is standss ready to
cooperate strongly in a Kingsideattack } 17... Ne7 18. Rg3 $5 { White offers too tempi in order to decoy the Black Knight to f5 } 18... Nf5 19. Rd3 Bd5 $2 ( 19... Nxd4 20. Qd1 Qc7 21. Nxf7 Nxb3 22. Nxh6+ gxh6 23. Qxb3 $17 ) 20. Nxd5 Nxd5 21. Qe4 Be7 22. Ng6 $1 { Overloaded pawn ... thematic Ne5 tactics } 22... Nf6 ( 22... fxg6 23. Qxe6+ Kh8 24. Bxd5 ) 23. Nxe7+ Qxe7 24. Qf3 Rfd8 ( 24... Nh4 ) ( 24... Nd6 ) 25. d5 $1 { Thematic breakthrough } 25... Nh4 { Black should not be trying for advantage } ( 25... Qd7 26. g4 Nh4 27. Qh3 Ng6 28. g5 hxg5 29. Bxg5 exd5 30. Qxd7 Rxd7 31. Bxf6 gxf6 32. Rxd5 Rxd5 33. Bxd5 $11 ) 26. Qe3 $1 Nf5 27. Qh3 Qd7 28. g4 $1 Ne7 29. g5 hxg5 ( 29... Nfxd5 30. gxh6 Ng6 { Black's last chance } ) 30. dxe6 $3 { Zwinzenchung } 30... Qxd3 31. exf7+ Kf8 32. Qh8+ 1-0
[Event "Amsterdam"]
[Site "?"]
[Date "1954.??.??"]
[Round "?"]
[White "Szabo"]
[Black "Unzicker"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[ECO "D42"]
[PlyCount "76"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3 cxd4 8. exd4 Be7 9. O-O O-O 10. Re1 Nf6 11. a3 b6 12. Bg5 Bb7 13. Bc2 Ba6 14. Qd2 Rc8 15. Qf4 $1 Re8 16. Rad1 h6 $2 { Another weakening } ( 16... g6 17. Qh4 Nd5 18. Nxd5 exd5 19. Rxe7 $2 { Based on dark square tactic, but Black removes the f5 guard } 19... Nxe7 20. Bf6 Rxc2 21. Qh6 Nf5 ) 17. Bxf6 $1 Bxf6 18. d5 $1 { The possessor
an isolated d-pawn must be constantly on the lookout for the chance of this
breakthrough } 18... exd5 ( 18... Bxc3 19. dxc6 ) 19. Rxe8+ Qxe8 20. Qf5 { This is the real point. Black cannot now prevent the penetration at h7 since
the g-pawn is the only defence onBf6 } 20... Bxc3 ( 20... Ne7 21. Qh7+ Kf8 22. Qh8+ Ng8 23. Bh7 { followed by Re1 } ) ( 20... Kf8 21. Re1 Qd8 22. Nxd5 Bxb2 23. Nf4 $1 ) 21. Qh7+ Kf8 22. bxc3 Ne5 $1 23. Nd4 $1 ( 23. Qh8+ Ke7 24. Qxe8+ Kxe8 25. Nxe5 Rxc3 $132 ) 23... Ng6 24. h4 $1 h5 ( 24... Qe5 25. h5 Qxh5 { Black can't defend the g7 square } ) 25. Bf5 $1 Rxc3 26. Ne6+ $1 { By means of this pretty continuation, the Black King is now bereft of his
protecting pawns } 26... fxe6 27. Bxg6 Qc6 28. Qh8+ Ke7 29. Qxg7+ Kd6 30. Re1 $1 Bc8 ( 30... Rc1 31. Qf8+ Kc7 32. Qf4+ ) 31. Bxh5 Qc5 32. Bg4 Rc2 33. Qf6 Kc6 34. h5 $1 { Shortest way to a win } 34... Rc1 35. Rxc1 Qxc1+ 36. Kh2 Qxa3 37. h6 Qd6+ 38. f4 Qc7 1-0
[Event "Zaandam"]
[Site "?"]
[Date "1946.??.??"]
[Round "?"]
[White "Stoltz"]
[Black "Thomas"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[ECO "E57"]
[PlyCount "63"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Strategic breakthrough with Pd5 } 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 dxc4 8. Bxc4 Be7 9. O-O O-O 10. Re1 a6 11. Ba2 b5 12. d5 $1 { The strategic breakthrough on d5 is simply the result of the fact that the
owner of the isolated d-pawn has extra control of Black's blockade square at
d5. The result of the break is that the isolated pawn disappears, but also
that the advantages persist for a long time in the form of extra freedom of
maneuver } 12... exd5 13. Nxd5 Nxd5 14. Qxd5 Qd6 { This costs two minor pieces for a Rook } ( 14... Bb7 15. Bg5 Bxg5 ( 15... Na5 16. Qf5 Bxg5 17. Nxg5 g6 18. Nxf7 $1 ) 16. Nxg5 Qxd5 17. Bxd5 h6 18. Ne4 ) 15. Rxe7 $1 Qxe7 16. Qxc6 Bg4 17. Be3 Rac8 18. Qd5 Rfd8 19. Qg5 Qxg5 20. Nxg5 { The rest just demonstrates how two minor pieces win against a Rook } 20... Rd7 21. f3 Bf5 22. g4 Bd3 23. Rd1 Rcd8 24. Bb6 Bc4 25. Rxd7 Rxd7 26. Bxc4 bxc4 27. Ne4 f5 28. gxf5 Kf7 29. Ba5 Rd5 30. Bc3 h5 31. Kf2 Kg8 32. f6 1-0
[Event "?"]
[Site "?"]
[Date "1952.??.??"]
[Round "?"]
[White "Najdorf"]
[Black "Reshevsky"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[ECO "D40"]
[PlyCount "113"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The Black Kingside weakened } 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O Nc6 8. a3 dxc4 9. Bxc4 cxd4 10. exd4 Be7 11. Re1 b6 12. Bf4 Bb7 13. Ba2 Rc8 $2 ( 13... Nd5 { cut across White's plan of attack } ) 14. Qd3 ( 14. d5 exd5 15. Nxd5 Nxd5 16. Bxd5 Na5 $32 { White has a slight pull in development } ) 14... Qd7 15. Rad1 Nd5 16. Bb1 { The right idea at the wrong moment } 16... g6 17. Bh6 Rfe8 18. Ne4 { Having force
d the weakening ... Pg6, White now begins to direct his pieces as the
resulting holes at h6 and f6. At the same time, as far as possible, he avoids
exchanging pieces } 18... Bf8 $2 { Black wants to exchanges, but this is the Bishop needed } ( 18... Nf6 ) 19. Bxf8 Rxf8 20. Ne5 $1 Qe7 ( 20... Nxe5 21. dxe5 { White controls f6 } ) 21. Qg3 Rcd8 22. Ng5 $1 { The direct attack gets going } 22... Nf6 ( 22... -- 23. Nxh7 Kxh7 24. Nxg6 fxg6 25. Qxg6+ Kh8 26. Rd3 ) 23. Qh4 Nxe5 ( 23... -- 24. Nxc6 { removing the guard } 24... Bxc6 25. Nxh7 ) 24. Rxe5 Qd6 25. Re3 Kg7 26. Rh3 Rh8 ( 26... h5 27. Rg3 -- 28. Nxf7 Rxf7 29. Rxg6+ ) 27. Qh6+ Kg8 28. Ba2 $1 { Having nothing more to achieve on the b1-h7 diagonal, the Bishop seeks fresh
fields } 28... Qf8 29. Qh4 Kg7 ( 29... Bd5 30. Bxd5 Rxd5 31. Rf3 $1 $16 ) 30. Bxe6 { fork tactic } 30... Bd5 31. Bxd5 Rxd5 32. Qh6+ Kg8 33. Qh4 Kg7 34. Qh6+ Kg8 35. Qh4 Kg7 36. Nf3 Qd6 ( 36... b5 ) 37. Qh6+ Kg8 38. Re1 Qf8 39. Qf4 Nh5 40. Qc7 Kg7 41. Re7 $1 Kg8 42. Rh4 Rd8 43. g3 Nf6 44. Qe5 Nd7 45. Qe2 h6 46. Rhe4 Nf6 47. R4e6 $1 Nd5 48. Rxa7 Rh7 49. Rc6 f6 50. Qe6+ Kh8 51. Nh4 Rg7 52. Qg4 g5 53. Rxg7 Qxg7 54. Nf5 Qg6 55. Qe4 h5 56. Qe6 Qg8 57. Rxb6 { removing the guard } 1-0
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Fine"]
[Black "Stahlberg"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[ECO "D62"]
[PlyCount "105"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The effect of the advance e4 } 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 Nbd7 6. e3 O-O 7. Qc2 c5 8. cxd5 cxd4 9. Nxd4 Nxd5 10. Bxe7 Qxe7 11. Nxd5 exd5 12. Bd3 Qb4+ { So as not to lose a tempo defending his h7 square } 13. Qd2 Ne5 { An interesting continuation which was used by Capablanca in one of
his games with Flohr } 14. Be2 ( 14. Qxb4 Nxd3+ ) 14... Qb6 { Following the rule
that the weakness of an isolated pawn is less serious in the middle game than
in an ending. This rule holds true only in so far as one's extra freedom fo
movement can be utilized in a Kingside attack. In the present game Black will
not be able to mount an assault on the King, so the text is faulty } ( 14... Qxd2+ 15. Kxd2 { Debatable whether the advantage is sufficient for a win } ) 15. b3 Nc6 16. Rd1 { Obviously White is not going to allow his opponent to make the
pawn position symmetrical by exchanges on d4 } 16... Be6 17. O-O Rac8 18. Qb2 Nxd4 { In order to double the Rooks on the c-file } 19. Rxd4 Rc5 20. Rfd1 Rfc8 21. R4d2 h6 22. Bf3 Qc6 23. h3 { In view of an eventual ... Rc1 by Black,
a flight square is necessary for the King } 23... Rc7 { Black is marking time,
but it soon appears that the Rook is not well placed at c7. It is very
difficult to find any freeing maneuver } ( 23... Rc2 24. Qd4 Rxd2 25. Rxd2 Rd8 26. e4 ) 24. Qe5 f6 25. Qf4 Rc8 { Black parries this threat, but now danger comes from another quarter } ( 25... -- 26. Bxd5 Bxd5 27. Rxd5 Rxd5 28. Rxd5 Qxd5 29. Qxc7 ) 26. e4 $1 { Leading to a liquidation which is very much in white's favour } 26... dxe4 27. Rd6 { The point. } 27... exf3 ( 27... Qe8 28. Qxe4 { Double attack } ) 28. Rxc6 R8xc6 29. Qxf3 Rc1 30. Rxc1 Rxc1+ 31. Kh2 Rc6 { The technical problems posed by
this endgame are now solved by Fine in exemplary fashion } 32. Qf4 a6 33. Qb8+ Bc8 34. b4 $2 ( 34. a4 ) 34... Kh7 35. a4 f5 36. Qe5 Rf6 37. Qc7 Rc6 38. Qe7 Rg6 39. f3 Rc6 40. b5 axb5 41. axb5 Rc4 42. h4 Rc2 43. h5 Rc4 44. Qf7 Rc5 45. Kg3 Rc2 46. Qg6+ Kg8 47. Qe8+ Kh7 48. Kf4 Rc1 49. Qg6+ Kg8 50. Ke5 Bd7 51. Qb6 Bc8 52. Kd6 Kh7 53. Qd4 1-0
[Event "Moskva"]
[Site "Moskva"]
[Date "1935.??.??"]
[Round "13"]
[White "Flohr"]
[Black "Capablanca"]
[Result "1/2-1/2"]
[Annotator "19: Isolated Pawn"]
[ECO "D62"]
[PlyCount "104"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The isolated d-pawn in the endgame } 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bg5 Be7 6. e3 O-O 7. Qc2 c5 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Bd3 cxd4 12. Nxd4 Qb4+ 13. Qd2 Nc5 14. Bb5 Qxd2+ 15. Kxd2 a6 16. Bd3 Be6 17. Rac1 { The fact there is only one fully open file means that White can force an
ending with a strong Knight against bad Bishop. It is precisely this ending
which is vital to understand for the conduct of an isolated d-pawngame } 17... Rfc8 18. Rc2 Nxd3 19. Kxd3 Rxc2 20. Kxc2 Kf8 21. Kd2 Rc8 22. Rc1 Rxc1 23. Kxc1 Ke7 24. Kd2 Kd6 25. Kc3 { An important moment: White has the pawn position, and
moreover - or rather - the Knight is stronger than Black's Bishop. Is this
advantage sufficient for a win? This question must, provisionally, be answered
in the negative } 25... b6 26. f4 Bd7 27. Nf3 f6 28. Kd4 { White has achieved
his first objective - Kd4. His second aim - Nc3, attacking the isolated pawn -
follows without difficulty } 28... a5 29. Nd2 Bc8 30. Nb1 Be6 31. Nc3 Kc6 32. a3 h6 33. g3 { Rabinovitch put forward an interesting plan in the tournament book
- that White should try for Pf5 and Pg4 followed by transferring the Knight to
f4, threatening Ne6 or Nh5, according to circumstance } ( 33. g4 -- 34. f5 Bd7 35. Ne2 -- 36. Nf4 { Rabinovitch's plan } ) 33... h5 34. b4 axb4 ( 34... -- 35. b5+ Kd6 36. f5 Bf7 ( 36... Bxf5 37. Nxd5 Bd7 38. a4 ) 37. Ne2 { White gains advantage } ) 35. axb4 Kd6 36. b5 g6 37. Na4 Kc7 38. Nc3 Kd6 39. f5 gxf5 ( 39... Bxf5 40. Nxd5 Bd7 41. Nxb6 Bxb5 42. Nd5 { winning a pawn } ) 40. Ne2 Bd7 41. Nf4 Be8 42. Nxd5 Bxb5 43. Nxb6 { The isolated pawn has disappeared and White still has a
slight pull, but not a winning one } 43... Bc6 44. Nc4+ Ke6 45. Nb2 Bb5 46. Nd1 Be2 47. Nf2 Bf1 48. Nd3 Bxd3 49. Kxd3 Ke5 50. Ke2 Ke4 51. h3 Kd5 52. Kf3 Ke5 1/2-1/2
[Event "Vevey"]
[Site "?"]
[Date "1953.??.??"]
[Round "?"]
[White "Kramer"]
[Black "Schumacher"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[FEN "2b3k1/5ppp/pp3n2/3p4/1P1N4/3BP3/P4PPP/6K1 w - - 0 1"]
[PlyCount "61"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Another example of the isolated pawn in the endgame } 1. f3 { Not only avoiding
any unpleasanteness which might arise from Black's Knight coming to the e4 or
g4 square, but also facilitating an eventual e4 } 1... g6 { The same idea; Black avoids having his f5 square invaded by a Knight or Bishop } 2. Kf2 Bb7 $2 { This is not the best. The prime essential was to begin to
centralize the King by ... Kf8 } ( 2... Kf8 ) 3. Nb3 Ne8 $2 ( 3... Nd7 4. a4 Ne5 5. Ke2 Nc6 6. b5 axb5 7. axb5 Ne5 ) 4. a4 $1 Nc7 5. a5 { This way White
ensues that at least one Black pawn will be fixed on the same colour squares
as the Bishop } 5... b5 ( 5... bxa5 6. Nxa5 Bc8 7. Ke2 Kf8 8. Kd2 Ke7 9. Kc3 Kd6 10. h4 $1 { White still has possibilities on both sides of the board, but still
nothing clearly decisive } ) 6. Nc5 Bc8 7. Ke2 Ne6 ( 7... Kf8 8. Kd2 Ke7 9. Kc3 Kd6 10. Kd4 Ne6+ 11. Nxe6 Bxe6 ( 11... fxe6 12. f4 $1 Bb7 13. e4 Bc8 14. exd5 exd5 15. Be2 Bb7 16. Bf3 Bc6 17. g4 Bb7 18. f5 { Second weakness .. outside passed pawn } ) 12. e4 $1 dxe4 13. Bxe4 Bc8 14. g4 $1 { Black must give way and lose } ) 8. Nxe6 fxe6 9. e4 $1 ( 9. f4 Kf7 10. Kd2 Ke7 11. Kc3 e5 $11 ) 9... Bb7 ( 9... d4 10. e5 ) ( 9... dxe4 10. Bxe4 Kf7 11. Ke3 e5 12. Bd5+ Ke7 13. Ke4 Kd6 14. g4 $22 ) 10. Ke3 Kf7 11. Kd4 Kf6 12. e5+ Ke7 13. Kc5 Kf7 14. Kb6 Bc8 15. h4 Ke7 16. Kc7 Bd7 17. Kb7 Kd8 18. Kxa6 Kc7 19. Bxb5 h6 20. Bxd7 Kxd7 21. Kb5 Kc7 22. Kc5 Kb7 23. b5 Kb8 24. b6 Kb7 25. Kb5 Kb8 26. a6 Ka8 27. Kc6 d4 28. Kc7 d3 29. b7+ Ka7 30. b8=Q+ Kxa6 31. Qb6# 1-0
[Event "Beverwijk"]
[Site "Moskva"]
[Date "1952.??.??"]
[Round "?"]
[White "Euwe"]
[Black "Fuster"]
[Result "1/2-1/2"]
[Annotator "19: Isolated Pawn"]
[ECO "D62"]
[PlyCount "89"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The isolated d-pawn against the isolated c-pawn } 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. O-O cxd4 7. exd4 Be7 8. Qe2 O-O 9. Nc3 Nbd7 10. Bg5 Nb6 11. Bb3 Bd7 12. Rad1 Bc6 13. Ne5 Nfd5 $2 14. Nxc6 bxc6 15. Bc1 { Black was wrong to allow himself to be saddled with the isolated c-pawn which
will prove weaker than the White d-pawn. White, with his greater freedom of
movement, will now have chances of a Kingside attack. He already threatens Rd3
and Black finds it essential to bring reinforcements across to the King'swing } 15... Nd7 16. Rd3 Nxc3 17. Rxc3 $1 { It is important to keep the c-file open,
and Black would therefore have done better to make the exchange one move
earlier } 17... Rc8 18. Be3 Bg5 { Black breaks up White's Bishop pair } ( 18... Qa5 { Attempting to dissolve the IQP } 19. Rfc1 c5 20. Qc2 { Winning the pawn } ) 19. Rfc1 Bxe3 20. fxe3 Nb8 21. Bc2 { To put another attack
on the c-pawn by Be4. Moreover, White has Qh5 in hand, so that Black still has
to reckon with the possibility of Kingside trouble in the future } 21... Qd6 22. Be4 f5 23. Bf3 e5 { bid for freedom } 24. Qc4+ ( 24. dxe5 Qxe5 25. Bxc6 Nxc6 26. Rxc6 Rxc6 27. Rxc6 f4 $132 ) 24... Kh8 25. Qc5 $1 { The refutation } 25... Qxc5 26. Rxc5 exd4 ( 26... e4 27. Bd1 Rcd8 28. Ba4 ) 27. exd4 { White's d-pawn is again isolated, but in view of the threat Pd5, it
is now anything but weak } 27... Rcd8 28. R1c4 g6 ( 28... Rf6 29. Bxc6 Nxc6 30. Rxc6 Rxc6 31. Rxc6 Rxd4 32. Rc8+ ) 29. Bxc6 Nxc6 30. Rxc6 Rd7 31. Rc7 Rfd8 32. Rxd7 Rxd7 33. Kf2 Kg7 34. Ke3 Kf6 35. b4 Rd6 36. b5 Re6+ 37. Kd3 Re1 38. Rc7 Rg1 39. Rxa7 Rxg2 40. a4 Rxh2 41. b6 Rb2 42. a5 f4 43. Rxh7 g5 44. b7 f3 45. a6 1/2-1/2
[Event "Berlin"]
[Site "Berlin"]
[Date "1928.??.??"]
[Round "5"]
[White "Capablanca"]
[Black "Rubinstein"]
[Result "1-0"]
[Annotator "19: Isolated Pawn"]
[ECO "D02"]
[PlyCount "87"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Isolated d-pawn on the 5th rank } 1. d4 ( 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. dxc5 Bxc5 7. Bb5 Ne7 8. O-O O-O 9. Nb3 ) 1... d5 2. Nf3 c5 3. dxc5 e6 4. e4 Bxc5 5. exd5 exd5 6. Bb5+ Nc6 7. O-O Ne7 8. Nbd2 O-O 9. Nb3 Bb6 10. Re1 Bg4 11. Bd3 Ng6 12. h3 Bxf3 13. Qxf3 Nce5 14. Qf5 Nxd3 15. Qxd3 { Such positions arise mostly from the French Tarrasch. A comparison with the
positions dealt with so far shows that the difference consists in the fact
that White has an unmoved c-pawn on e3. The advantage from White's point of
view s that the e-file is open; the disadvantage is that the f2 square is
vulnerbale.   A vital decision confronts Black: whether or not to push his
d-pawn to the fourth rank. Generally this is good policy; leading to greater
freedom of movement. } 15... d4 $2 { Here the advance only makes things more
difficult for Black. At d4 the pressure, which has the effect of reducing
Black's Bihops to a second rate piece. Another great handicap for Black is
that her cannot - or at any rate can only with great difficulty - get control
of the blockade square d3 } ( 15... Qf6 16. Rf1 Rad8 { Black's pieces are actively placed } ) 16. Bd2 Qf6 17. Re4 $1 Rad8 ( 17... Ne5 18. Qg3 Rfe8 19. Rae1 ) 18. Rae1 Qc6 19. g3 Rfe8 20. Ba5 $1 { Begins the direct attack on the isolated pawn } 20... Rxe4 ( 20... -- 21. Bxb6 axb6 22. Rxe8+ Rxe8 23. Rxe8+ Qxe8 24. Qxd4 ) 21. Qxe4 Nf8 ( 21... Qxe4 22. Rxe4 Bxa5 23. Nxa5 { Capablanca } ) 22. Qxc6 bxc6 23. Re7 Rd5 $2 { Leaves Black in a throroughly passive state } ( 23... -- 24. Rxa7 Bxa7 25. Bxd8 ) ( 23... d3 24. cxd3 ( 24. Rxa7 { to keep any winning chances } 24... Bxa7 25. Bxd8 dxc2 26. Bg5 $1 Ne6 27. Bc1 ) 24... Rxd3 25. Bxb6 axb6 26. Rb7 b5 27. Rc7 Rd1+ 28. Kg2 Rb1 $11 ) 24. Bxb6 axb6 25. Rb7 Nd7 { Now White has a
clear endgame advantage which he converted in the following instructive way } 26. Rc7 { Picking on the pawn weaknesses } 26... Rd6 27. Rc8+ Nf8 28. Nd2 c5 29. Nc4 Re6 30. Rb8 Re1+ 31. Kg2 g5 32. a4 Ra1 33. Nxb6 Kg7 34. Rc8 Ne6 35. Nd7 Rxa4 36. Nxc5 Rb4 37. Nd3 Rb5 38. Kf3 h6 39. b4 h5 40. g4 hxg4+ 41. hxg4 f6 42. Rc4 Kf7 43. Nc5 Nd8 44. Nb3 1-0
[Event "Hastings"]
[Site "?"]
[Date "1936.??.??"]
[Round "?"]
[White "Fine"]
[Black "Vidmar"]
[Result "1/2-1/2"]
[Annotator "19: Isolated Pawn"]
[ECO "D34"]
[PlyCount "107"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Isolated d-pawn on the 5th rank } 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. g3 Nc6 6. Nc3 Nf6 7. Bg2 Be7 8. O-O O-O 9. dxc5 d4 10. Na4 Bf5 { A well known form of the Tarrasch Defence in which, by menas of a pawn
sacrifice, Black has pushed his isolated pawn to the fourth rank. According to
Tarrasch, Black's space advantage is ample compensation for the lostpawn } 11. Nh4 ( 11. Bf4 ) ( 11. a3 Ne4 12. b4 Nc3 13. Nxc3 dxc3 14. Qxd8 Raxd8 15. Bg5 Bxg5 16. Nxg5 Nd4 $132 ) 11... Bg4 12. a3 Nd5 13. Qb3 Be6 $1 { White can't take the b-pawn } 14. Nf5 $1 ( 14. Qxb7 Na5 15. Qa6 Nb3 16. Rb1 Bxh4 ) 14... Nb6 $1 15. Nxe7+ Qxe7 16. Qd1 Nxa4 17. Qxa4 Qxc5 { Black has recover
ed his pawn and stands well. Black also has a good bishop unlike the previous
game } 18. Bf4 Qb6 19. b4 Bc4 20. Qc2 Qa6 21. Rfe1 Rfe8 22. Be4 h6 23. Bh7+ Kh8 24. Bd3 Bxd3 25. Qxd3 Qxd3 26. exd3 a6 { The pressure which black exerts
on the open e-file is almost bound to give rise to this sort of endgame. It
would be going too far for us to discuss it in any detail; suffice it to say
that Black's position is certainly not inferior. } 27. Kf1 Kg8 28. Rac1 f6 29. Bc7 Kf7 30. Re4 g5 31. Rc5 Rxe4 32. dxe4 Re8 33. f3 Re7 $1 34. Bb6 g4 35. fxg4 Rxe4 36. Rc4 Rxg4 37. a4 Rg5 38. Ke2 Rd5 39. Rc5 d3+ $2 40. Kd2 Rd7 41. b5 axb5 42. axb5 Nd4 43. Rc7 Rxc7 $2 ( 43... Nf3+ 44. Ke3 Rxc7 45. Bxc7 d2 46. Ke2 h5 ) 44. Bxc7 Nxb5 45. Bf4 h5 46. Kxd3 Ke6 47. h3 f5 48. Kc4 Nd6+ 49. Kc5 Nc8 50. Bb8 Kd7 51. Bf4 Ne7 52. Bg5 Nc6 53. Kd5 b5 54. Bd2 1/2-1/2
[Event "Carlsbad"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Bernstein"]
[Black "Teichmann"]
[Result "1/2-1/2"]
[Annotator "20: Hanging Pawns"]
[FEN "r4rk1/p3qppp/Q4n2/2pp4/8/2R1PN2/PP3PPP/5RK1 w - - 0 1"]
[PlyCount "44"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Hanging pawns on the defensive  Most minor pieces have gone, and the weakness
of the hanging pawns become a serious matter. White now tries to lure them
forward } 1. Qa3 Ne4 { Guards the c-pawn, but now the d-pawn has been weakened } 2. Rd3 Rfd8 3. Rfd1 Qe6 4. Nd2 Qb6 5. Nf1 $2 ( 5. Nxe4 dxe4 6. Qxa7 $3 { Whits wins in all
variations. The incredible shot Qxa7, unnoticed for 75 years in numerous
publications of this game, was discovered by New Orleans Master Jude Acers } ) 5... Nf6 6. Ng3 Rac8 7. h3 h6 8. Ne2 Rd7 9. Nc3 Qe6 10. Qa5 d4 $1 { The fighter agains the hanging pawns must always reckon with this advance. Now
we come to the situation of an isolated d-pawn on the fourth rank. The
difference here is that is also a passedpawn } 11. exd4 cxd4 12. Nb5 Qf5 $1 13. Qa4 Rc1 $1 14. Rxc1 ( 14. -- Qxd3 ) ( 14. Rxd4 Rxd1+ 15. Rxd1 Rxd1+ 16. Qxd1 Qxb5 ) 14... Qxd3 15. Rc8+ Kh7 16. Qc2 Qxc2 17. Rxc2 d3 18. Rd2 Ne4 19. Rd1 Rb7 20. Nc3 Nxc3 21. bxc3 Rb2 22. Rxd3 Rxa2 1/2-1/2
[Event "Neuhausen"]
[Site "?"]
[Date "1953.??.??"]
[Round "?"]
[White "Euwe"]
[Black "Reshevsky"]
[Result "0-1"]
[Annotator "20: Hanging Pawns"]
[ECO "E28"]
[PlyCount "78"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. a3 Bxc3+ 7. bxc3 b6 8. Ne2 Bb7 9. O-O d6 10. Qc2 d5 11. cxd5 Qxd5 12. Nf4 Qc6 13. c4 cxd4 14. exd4 Nbd7 15. Bb2 Rfe8 16. Rfe1 Rac8 17. Rac1 Nf8 18. Bf1 { In view of Blak'cs
threat ... Ng6, White must do something about the impending mate at g2 } ( 18. f3 Ng6 19. Nxg6 hxg6 20. Qf2 ) 18... Ng6 19. Nxg6 $2 { Now White will be on the defensive } ( 19. Nd3 $1 b5 20. Nc5 { better propsects } ) 19... hxg6 20. Re3 Red8 21. Qe2 { White must leave the c-file in view of Black's threatened ... Pb5 } 21... Qd6 22. Rh3 Qf4 $1 { Showing how vital are the vacant central squares } 23. Rd1 Ba6 24. Rf3 Qe4 25. Re3 Qg4 26. f3 Qf4 27. g3 { White succeeds in controlling
the vacant central squares at the cost of weakening his King position } 27... Qh6 28. Rc3 Qg5 29. Qf2 Rd7 30. Rdc1 Rdc7 31. R1c2 Qa5 32. Bc1 $2 { A serious mistake } ( 32. Rc1 { A passive procedure, but a policy by which he might have been able to survive } ) 32... Nd5 { pint tactic } 33. cxd5 Rxc3 34. Rxc3 Qxc3 ( 34... Rxc3 35. Bd2 ) 35. Bb2 Qb3 36. Bxa6 Rc2 37. d6 Rxf2 38. d7 Qd5 39. Kxf2 Qxd7 0-1
[Event "17"]
[Site "Moskva ch-SU  (13.12.51)"]
[Date "1951.??.??"]
[Round "?"]
[White "Keres"]
[Black "Taimanov"]
[Result "1-0"]
[Annotator "20: Hanging Pawns"]
[ECO "A17"]
[PlyCount "73"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. e3 Be7 5. b3 O-O 6. Bb2 b6 7. d4 Bb7 8. Bd3 dxc4 9. bxc4 c5 10. O-O cxd4 11. exd4 Nc6 12. Qe2 { The Queen stands best here,
not only protecting the c-pawn, but also taking part in all sorts of tactical
twists on the Kingside } 12... Re8 ( 12... Nxd4 13. Nxd4 Qxd4 14. Nd5 Qc5 15. Bxf6 $1 Bxf6 ( 15... gxf6 16. Qg4+ Kh8 17. Qh4 ) 16. Qe4 ) 13. Rfd1 Rc8 14. Rac1 Qd6 { Heading for the vacant central square at f4. } ( 14... Bd6 15. Ne4 Nxe4 16. Qxe4 f5 17. Qe2 Bf4 { The Bishop would take over the duty instead of the Queen } ) 15. Bb1 Qf4 16. d5 $1 { The flood gates open ... this move is associated with opening the a1-h8
diagonal } 16... exd5 17. cxd5 Nb8 ( 17... Ba3 18. dxc6 Rxe2 19. cxb7 $1 ) 18. Rd4 Qd6 { The Queen takes on the role of blockader - a task for which she is
by no means the ideal piece } 19. Rcd1 Bf8 20. Ne4 Nxe4 21. Rxe4 Rxe4 22. Qxe4 Qh6 23. Ng5 $1 Bd6 ( 23... g6 24. Nxf7 Kxf7 25. Qe6# ) 24. h4 { White is not going to be satisfied with the win of a pawn, but quite rightly
expects to get more out of theposition } 24... Nd7 25. Qf5 $1 Nf6 26. Bxf6 gxf6 27. Nxf7 $1 Qc1 ( 27... Kxf7 28. Qd7+ ) 28. Qxh7+ Kf8 29. Nxd6 Qxd1+ 30. Kh2 Qxd5 31. Nxb7 Qe5+ 32. g3 Rc7 33. Qh8+ Kf7 34. h5 $1 Rxb7 35. Qh7+ Ke6 36. Qxb7 Qxh5+ 37. Kg2 1-0
[Event "?"]
[Site "?"]
[Date "1942.??.??"]
[Round "?"]
[White "Kramer"]
[Black "Van der Tol"]
[Result "1-0"]
[Annotator "20: Hanging Pawns"]
[ECO "D31"]
[PlyCount "85"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The effect of Pd5 played later } 1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. a3 Bxc3+ 5. bxc3 Nf6 6. e3 O-O 7. cxd5 Qxd5 8. c4 Qd6 9. Nf3 c5 10. Be2 Nc6 11. Bb2 cxd4 12. exd4 Rd8 13. Qc2 b6 14. O-O Bb7 15. Rfd1 { The ideal arrangement for White would be Rad1, Bd3 and Qe2 } ( 15. Bd3 Nxd4 16. Nxd4 ( 16. Bxd4 Bxf3 17. Bxf6 Qxd3 ) 16... e5 ) ( 15. Rad1 Rac8 16. Bd3 Na5 $1 17. Qe2 Bxf3 18. Qxf3 Nxc4 $17 ) 15... Qf4 ( 15... Rac8 16. Bc3 { to stop ... Na5 } ) 16. Bd3 Rac8 17. Qe2 Na5 18. Nd2 { Now White has made his
hanging pawns secure, and can set about building hs own ideal position } ( 18. Ne5 Nb3 ) 18... Rd7 19. Re1 Rcd8 ( 19... Rdc7 $2 20. d5 ) 20. Rad1 { Now White has the position he wanted } 20... Bc6 21. Bc2 Nb7 22. Nf1 Nd6 23. Ng3 Qh4 24. d5 $1 { Yet agains the same breakthrough. This combination is based on
the bad position of the Black Queen, and the possibility of a mate on the back
rank } 24... exd5 25. Rd4 $1 Nde4 ( 25... Qg5 26. Bc1 ) ( 25... Qh6 26. Bc1 g5 27. h4 $1 { pin tactic } ) ( 25... Nfe4 26. f3 Nxg3 27. hxg3 Qf6 ( 27... Qxg3 28. Rg4 { trapped piece } ) 28. Rg4 $1 Qxb2 29. Bxh7+ ) 26. Bxe4 dxe4 ( 26... Nxe4 27. f3 Nxg3 28. Qe8+ $1 ) 27. Nf5 { threatening not only Nxf4 but Ne7+ (back rank) } 27... Rxd4 28. Bxd4 ( 28. Nxh4 Rd2 { suit Black fine } ) 28... Qh5 29. Ne7+ Kf8 30. Qxh5 $1 ( 30. Nxc6 Qxe2 31. Rxe2 Rd6 32. Bxf6 $2 Rd1+ ) 30... Nxh5 31. Nxc6 Rd6 32. g4 $1 { This is the point: Black can't recover the piece } 32... Nf4 33. Be5 Rxc6 34. Bxf4 Rxc4 35. Rc1 Ra4 36. Rc7 Ke8 37. Bd6 Rd4 38. Be5 Ra4 39. Bb2 b5 40. Kf1 a5 41. Rb7 b4 42. axb4 axb4 43. Bxg7 1-0
[Event "Karlsbad"]
[Site "Karlsbad"]
[Date "1907.??.??"]
[Round "?"]
[White "Rubinstein"]
[Black "Nimzowitsch"]
[Result "0-1"]
[Annotator "20: Hanging Pawns"]
[ECO "D32"]
[PlyCount "88"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Blockaded security by means of the advance ... Pc5 } 1. d4 d5 2. Nf3 e6 3. c4 c5 4. cxd5 exd5 5. Nc3 Nc6 6. Bf4 cxd4 7. Nxd4 Bb4 8. e3 Nf6 9. Nxc6 bxc6 10. Bd3 O-O 11. O-O Bd6 12. Bg3 Bxg3 13. hxg3 c5 14. Rc1 Be6 15. Qa4 ( 15. e4 d4 16. Na4 Bxa2 17. Nxc5 { Marco } ) 15... Qb6 16. Qa3 c4 $1 17. Be2 a5 18. Rfd1 Qb4 19. Rd4 Rfd8 ( 19... Qxa3 20. bxa3 { White would either win the b-pawn or get control of the b-file } 20... Rab8 21. Bf3 Rfd8 22. Rcd1 ) 20. Rcd1 Rd7 21. Bf3 Rad8 22. Nb1 $2 { The game was
approaching a state of deadlock, this move partially relaxes the pressure on
Black's d-pawn, gives Black his opportunity of bringing the White b-pawn under
fire in return } ( 22. Kf1 { waiting policy } ) 22... Rb8 $1 23. R1d2 Qxa3 $1 ( 23... Rdb7 24. Qc3 Qxc3 25. Nxc3 Rxb2 26. Rxb2 Rxb2 27. Bxd5 Nxd5 28. Nxd5 Rxa2 29. Rxc4 { White has saved himself (Nimzowitsch) } ) 24. Nxa3 Kf8 ( 24... Rdb7 25. Nxc4 { back rank } ) 25. e4 { Virtually forced, else the b-pawn falls } 25... dxe4 26. Rxd7 Nxd7 27. Bxe4 Nc5 28. Rd4 ( 28. Bc6 $1 Rb4 29. Bd5 Na4 30. Bxe6 fxe6 31. Rd8+ Ke7 32. Ra8 $11 ) 28... Nxe4 29. Rxe4 Rxb2 30. Nxc4 Rb4 31. Nd6 Rxe4 32. Nxe4 Bxa2 { And Black clinched the win as follows } 33. Nc3 Bc4 34. f4 Ke7 35. Kf2 Kd6 36. Ke3 Kc5 37. g4 Kb4 38. Kd4 Bb3 39. g5 a4 40. Nb1 Be6 41. g3 Kb3 42. Nc3 a3 43. Kd3 g6 44. Kd4 Kc2 $22 0-1
[Event "ct"]
[Site "Zurich"]
[Date "1953.??.??"]
[Round "?"]
[White "Szabo"]
[Black "Petrosian"]
[Result "0-1"]
[Annotator "20: Hanging Pawns"]
[ECO "D58"]
[PlyCount "78"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ How White can maintain the initiative against Black's blockaded security } 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 b6 8. Bd3 Bb7 9. O-O Nbd7 10. Rc1 c5 11. Qe2 a6 12. cxd5 exd5 13. dxc5 bxc5 14. Rfd1 Re8 15. Bc2 { The bishop is going to b3, virtually forcing Black to play c4 and accept
what Nimzowitsch called a blockaded security. The only question is whether
this security is really secure } 15... Qb6 16. Bb3 c4 17. Ba4 Bc6 18. Bxc6 Qxc6 19. b3 { This is the normal way of attacking the hanging pawns } ( 19. Nd4 ) 19... Rac8 20. Na4 $2 { Beating the air; this only induces the Black Queen to improve her position } ( 20. bxc4 dxc4 21. Nd4 ) 20... Qb5 21. Nc3 Qa5 22. Bxf6 { This exchange
suits White's strategy, relieving him from the necessity of constantly
watching the threat ... Nc5-d3 } 22... Nxf6 23. bxc4 dxc4 { Black's hanging
pawns have now disappeared, and he is left instead with an isolated, but
passed c-pawn. This pawn may be either strong or weak. There is no general
rule about this, for even the slight modification of the position may alter
the result completely. In the present case, the pawn is weak, and White could
win it in several ways } ( 23... Rxc4 24. Nxd5 $1 { In between move tactic } ) 24. Nd2 $2 { This is not the way to go about it } ( 24. Rd4 Bb4 25. Rxc4 Bxc3 26. R1xc3 Qxc3 27. Rxc3 Rxc3 { Black has little to fear. With two Rooks
against a Queen and pawn, he can face the future with equanimity } ) 24... Rc6 25. Nxc4 $2 { A decisive mistake: White now gets into a deadly pin } 25... Qc7 26. Na4 Rc8 27. Rd4 ( 27. Nab2 Ba3 { removing the guard } ) ( 27. Nab6 Rxb6 28. Nxb6 Qxc1 29. Nxc8 Qxc8 30. e4 { drawing chances } ) 27... Ne8 28. e4 Bf6 29. e5 Bxe5 30. Re4 Nf6 $1 { the point } 31. Nab6 ( 31. Rxe5 Rxc4 32. Rxc4 Qxc4 33. Qd1 Qxa4 $1 34. Qxa4 Rc1+ ) 31... Rxb6 32. Rxe5 Rc6 ( 32... Qxc4 33. Rxc4 Rb1+ $19 ) 33. Re7 Rxc4 34. Re1 Qc6 35. h3 Rc1 36. Rxc1 Qxc1+ 37. Kh2 Qc4 38. Qf3 Qxa2 39. Ra7 Qd5 0-1
[Event "Moscow"]
[Site "?"]
[Date "1940.??.??"]
[Round "?"]
[White "Makagonov"]
[Black "Stolberg"]
[Result "1/2-1/2"]
[Annotator "20: Hanging Pawns"]
[ECO "D59"]
[PlyCount "106"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Direct attack on the hanging pawns by Pe4 } 1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Rc1 Be6 12. Bd3 c5 13. dxc5 bxc5 14. O-O Nd7 15. e4 $1 { A very important stroke which transforms the whole picture of the battle } 15... dxe4 ( 15... d4 16. Nd2 { It is clear White has many advantages:  1) Hanging
pawns are blocked and vulnerable  2) White is firmly in control of the vital
c4 square  3) White' Kingside majority is mobile and likely to be a decisive
weapon  On the other hand, it would not be correct to suppose Black is
entirely without counterplay. With the open b-file at his disposal, he could
force White to play Pb3, after which he could set White some problems by
advancing his a-pawn } ) 16. Bxe4 Rad8 17. Re1 $2 { Now Black can alwas exchange the dangerous Bishop } ( 17. Qc2 ) 17... Nf6 18. Qc2 Nxe4 19. Rxe4 Rd5 20. h3 Rfd8 { In compensation for his weak a-pawn and
c-pawn, Black has control of the open d-file } 21. Re5 Rxe5 22. Nxe5 Qg5 23. Nf3 Qf4 24. Qc3 ( 24. Qxc5 Bxh3 25. -- Bxg2 26. Kxg2 Qg4+ ) 24... c4 { The weak pawn turns out to be strong } 25. Qe3 Qxe3 26. fxe3 Rb8 27. Rc2 Bf5 28. Rxc4 ( 28. Rd2 Bb1 29. a3 Rb3 { Black has the initiative } ) 28... Rxb2 29. Ra4 Rb7 { Chances arae equal } 30. a3 Kf8 31. Nd4 Bd7 32. Ra5 Ke7 33. Kf2 g6 34. g4 Rc7 35. Kg3 Kd6 36. h4 Ke7 37. h5 g5 38. Ra6 f6 39. Nf5+ Bxf5 40. gxf5 Rb7 41. a4 Kf7 42. a5 Re7 43. Kf3 Kg7 44. e4 Kf7 45. Rc6 g4+ 46. Ke3 g3 47. Rc4 Ke8 48. Kf3 Rg7 49. Kg2 Kd7 50. Rc3 Rg4 51. Rxg3 Rxe4 52. Rg7+ Kd6 53. Rxa7 Ra4 1/2-1/2
[Event "Mar del Plata"]
[Site "?"]
[Date "1953.??.??"]
[Round "?"]
[White "Ojanen"]
[Black "Trifunovic"]
[Result "0-1"]
[Annotator "20: Hanging Pawns"]
[ECO "E51"]
[PlyCount "64"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ The less familiar but nevertheless dangerous flank attack on the hanging
pawns by ... Pb5 } 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. a3 Bxc3+ 7. bxc3 c5 8. cxd5 Nxd5 9. c4 Nf6 10. Qc2 cxd4 11. exd4 Bd7 $1 12. Be2 b5 { This strong flank attack is possible, thanks to the fact that White
is uncastled } 13. c5 { If White had allowed this pawn to be captured at c4, he
would have been left with an isolated d-pawn. The consequences of the move
actually played are even more serious, for he now gets all disadvantages which
we know are associated with "blockaded security", but not its advantages. The
usual advantage lies in the possiblity of an attack on the b-pawn, but in the
present case, with a pawn at b7, but already on b5, this simply doesn't arise } ( 13. cxb5 Bxb5 14. Bxb5 Qa5+ ) 13... Bc6 14. O-O Be4 { Occupying a vital "vacant central square" } 15. Qc3 ( 15. Qb3 Nc6 ( 15... a6 ) 16. Qxb5 Bxf3 17. Bxf3 Nxd4 18. Qd3 Nxf3+ 19. Qxf3 Qd5 ) 15... Nc6 16. Be3 ( 16. -- Bxf3 17. Bxf3 Nxd4 18. Bxa8 Ne2+ ) ( 16. Bxb5 Bxf3 17. Qxf3 Nxd4 18. Qd3 Nxb5 19. Qxb5 Qc7 { the weakness of the white c-pawn will be a serious liability } ) 16... Nd5 17. Qc1 Rb8 18. Ne5 Qc7 19. Nxc6 Qxc6 20. Bd2 $2 ( 20. f3 Bg6 ( 20... Nxe3 21. Qxe3 Bd5 { Black's twofold advantage consists of the weakness of the White
d-pawn and his ability to create a passed pawn on the extreme Queen's wing } ) ) 20... Bxg2 $1 21. Re1 ( 21. Kxg2 Ne3+ 22. Kg3 Qg2+ 23. Kh4 Nf5+ 24. Kh5 g6# ) 21... Ne7 22. Bf4 Rb7 23. Bd6 Bd5 24. Qc3 Rc8 25. Bxe7 Rxe7 26. Reb1 e5 $1 27. Bxb5 Qg6+ 28. Qg3 Qe4 29. f3 Qxd4+ 30. Qf2 Qxf2+ 31. Kxf2 Rxc5 32. Bd3 g6 0-1
[Event "07"]
[Site "Saltsjobaden izt  ,IZT"]
[Date "1952.??.??"]
[Round "?"]
[White "Eliskases"]
[Black "Vaitonis"]
[Result "1-0"]
[Annotator "20: Hanging Pawns"]
[ECO "D60"]
[PlyCount "65"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ If White had already pushed his f-pawn two square, Black's pla against the
hanging pawns is very much hampered } 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 Nbd7 6. e3 O-O 7. Bd3 dxc4 8. Bxc4 c5 9. O-O Nb6 10. Bb3 cxd4 11. exd4 Nfd5 12. Qd2 Bxg5 13. Nxg5 Nxc3 14. bxc3 Nd5 15. f4 h6 16. Nf3 Bd7 17. Ne5 Nf6 18. Rae1 Bc6 19. f5 $1 { Before playing Pc4, White first opens the f-file.
This has to be done promptly, for Black was on the point of occupying a vacant
central square with ... Be4 } 19... Bd5 20. c4 Be4 21. fxe6 fxe6 22. Rf4 Bh7 23. c5 $1 { Evidently this advance (blocaded security once more!) has a rather
different significance here from that of the previous game. Here it heralds a
direct attack by White } 23... Nd5 24. Rxf8+ Qxf8 25. Rf1 Qe8 26. Rf7 Qb5 27. Qf2 Qb4 28. h4 ( 28. Rd7 { Tournament book } 28... Rf8 29. Rxd5 $3 Rxf2 30. Rd8+ Rf8 31. Bxe6+ Kh8 32. Nf7+ Kg8 33. Ng5+ Kh8 34. Rxf8+ Bg8 35. Rxg8# ) 28... Be4 29. Kh2 Kh8 30. h5 Rg8 31. Bc2 $1 { revealing the point behind White's last few moves } 31... Nf6 ( 31... Bxc2 32. Qxc2 Re8 33. Rxg7 ) 32. Rxf6 Qxd4 33. Qxd4 1-0
[Event "New Orleans-Wch"]
[Site "New Orleans-Wch"]
[Date "1927.??.??"]
[Round "?"]
[White "Nimzowitsch"]
[Black "Vidmar"]
[Result "1/2-1/2"]
[Annotator "20: Hanging Pawns"]
[ECO "B22"]
[PlyCount "65"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Assault by the a-pawn; a defensive idea put forward by Nimzowitsch, and
elucidated in this game } 1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 Be7 7. Nc3 Nxc3 8. bxc3 d5 9. exd6 Qxd6 10. Be2 O-O 11. O-O Nd7 12. a4 { In the patent Nimzowitsch style. He gets in Pa4 now, anticpating that sooner
or later Black will have to play ... Pb6. There is an incidental threat of Ba3.
Another important Nimzowitsch dogma was that the Bishop should sustain the
hanging pawns from e2 - not from d3. This, to say the least, is a debatable
point, as our previous examples have shown  White's prospect of attack will be
better with the Bishop on d3, than if it is on e2. However, the dictum of
Nimzowitsch is sound enough in the sense that as a defender pure and simple
the Bishop functions better at e2 } 12... Qc7 13. Qb3 b6 14. c4 Bb7 15. a5 $1 Bf6 ( 15... bxa5 16. Bf4 $1 Qb6 17. Qa4 ) 16. axb6 axb6 17. Be3 h6 18. h3 Rfc8 19. Rfc1 Rcb8 ( 19... Rxa1 20. Rxa1 Bxf3 21. Bxf3 Qxc4 22. Qxc4 Rxc4 23. Ra8+ Nf8 24. d5 $132 { It is evident that Black's weakness at b6 is real
compensation for the weakness of the hanging pawns } ) 20. Rxa8 Rxa8 21. Nd2 Be7 22. Bf3 Ra3 23. Qb2 Bxf3 24. Nxf3 Ra5 25. Qd2 Ba3 26. Rc2 Bd6 27. Rc1 { White is content to defend. In view of the state of the tournament score it is
understandable that Nimzowitsch sought no more than a draw from this game } 27... Ba3 28. Rc2 Bd6 29. Rc1 Qa7 30. Qd3 Ra3 31. Qe4 Nf6 32. Qc6 Rxe3 $1 33. Qxd6 ( 33. fxe3 Qa3 34. Re1 Bg3 35. Rf1 Qxe3+ 36. Kh1 Ne4 { various threats } ) 1/2-1/2