Icannos/chess_studies huggingface dataset:
[Event "Belgrade"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Durasevic"]
[Black "Milic"]
[Result "0-1"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[FEN "4r1k1/4qpp1/3p3p/Bp4n1/2bN4/2P2P2/1P1Q1KPP/R7 w - - 0 1"]
[PlyCount "38"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Black has a choice of liquidation } 1. Qe1 $2 Nh3+ ( 1... Qxe1+ 2. Rxe1 Rxe1 3. Kxe1 Ne6 4. Nf5 $14 ) 2. Kg3 ( 2. gxh3 Qh4+ $19 ) 2... Qg5+ { Black prefers to win the White Queen, but even here there are technical
problems. It seems winning the exchange may have been easier } ( 2... Qxe1+ 3. Rxe1 Rxe1 4. Kxh3 $132 ) 3. Kxh3 Rxe1 4. Rxe1 Be6+ { A further forcing
liquidation - logical as the Knight was stronger than the Bishop } 5. Nxe6 fxe6 { The end of the liquidation - the only question is whether White can
somehow hold on to the draw. We leave a moot point - suffice it to say White's
task is difficult } 6. Bb4 d5 7. g3 Kf7 8. Re2 Qf5+ 9. Kg2 Qd3 10. Kf2 d4 11. Ba5 Qd1 12. cxd4 Qxd4+ 13. Kg2 Qd1 14. Rd2 Qa4 15. Bc3 b4 16. Rd4 Qc2+ 17. Rd2 Qb3 18. Be5 g5 19. g4 Qe3 0-1
[Event "Buenos Aires"]
[Site "?"]
[Date "1960.??.??"]
[Round "?"]
[White "Reshevsky"]
[Black "Pachman"]
[Result "1-0"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[ECO "E46"]
[PlyCount "49"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Accurate liquidation } 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Ne2 d5 6. a3 Be7 7. cxd5 Nxd5 8. Qc2 Nxc3 9. Nxc3 c5 10. dxc5 Bxc5 11. Be2 Nc6 12. O-O Qe7 13. b4 Bd6 14. Rd1 Bd7 15. Bb2 Rfd8 $2 16. Ne4 $1 Bb8 ( 16... Be5 17. Bxe5 Nxe5 18. Qc7 $1 ) ( 16... Be8 17. b5 Nb8 18. Nxd6 Rxd6 19. Rxd6 Qxd6 20. Qc8 ) 17. b5 Ne5 18. Qc5 $1 Kf8 ( 18... Qxc5 19. Nxc5 b6 20. Nxd7 Rxd7 21. Rxd7 Nxd7 22. Bf3 $18 ) 19. Rac1 $1 { White is in no hurry. He quietly builds up pressure } ( 19. Bxe5 Qxc5 20. Nxc5 Bxe5 21. Nxd7+ Rxd7 22. Rxd7 Bxa1 23. Rxb7 { Drawing chances due to opposite coloured bishops } ) 19... f6 20. a4 Nf7 21. Ba3 Qxc5 { Black is now forced to liquidate to a losing position } 22. Nxc5 Ke8 23. Nxb7 { It's over now } 23... Rc8 24. Rxc8+ Bxc8 25. Bf3 1-0
[Event "Leipzig"]
[Site "Leipzig"]
[Date "1960.??.??"]
[Round "?"]
[White "Botvinnik"]
[Black "Pachman"]
[Result "1-0"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[FEN "8/8/1p1q2pk/1PbQp1p1/P2pP1B1/6P1/2P3KP/8 w - - 0 34"]
[PlyCount "39"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ White goes into an ending with opposite coloured Bishops  Black offers the
exchange of Queens expecting a draw due to unlike Bishops } 34. Kf3 Kg7 ( 34... Qxd5 35. exd5 { Helping White with the use of e4 } ) 35. Qxd6 Bxd6 { Black has hoped to hold this ending; he has given up a pawn for it.Botvinnik's
excellent play shows the way to victory } 36. Ke2 Bb4 37. Kd3 Kf6 38. Kc4 Be1 39. Kd5 Bb4 40. Bd7 Be1 41. Be8 Bc3 42. Kc6 $1 { The only way to win } ( 42. h3 Be1 $11 ) ( 42. h4 gxh4 43. gxh4 g5 $1 $11 ) ( 42. g4 Bb4 43. Bxg6 Kxg6 44. Kxe5 Kf7 45. Kxd4 Ke6 $11 ) 42... Ba5 43. Kc7 $1 Kg7 44. Kd6 Kf6 ( 44... Bc3 45. Ke6 -- 46. Bc6 -- 47. Bd5 -- 48. Bc4 -- 49. Bd3 -- 50. Kxe5 ) 45. Bxg6 $1 Kxg6 46. Kxe5 Kf7 47. h4 g4 48. Kf5 Be1 49. h5 Bd2 ( 49... Bxg3 50. Kxg4 Be1 51. Kf5 ) 50. e5 Ke7 51. Ke4 $1 Ke6 52. a5 Bxa5 53. h6 1-0
[Event "USSR Ch"]
[Site "Moscow URS ch"]
[Date "1957.??.??"]
[Round "?"]
[White "Keres"]
[Black "Tal"]
[Result "0-1"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[FEN "2r3k1/pp1b2pp/3bp3/n2qNp2/3P4/P2BB3/1P2QPPP/3R2K1 b - - 0 20"]
[PlyCount "49"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Another liquidation into an ending with unlike Bishops } 20... Ba4 $1 ( 20... Bxe5 21. dxe5 Qxe5 22. Bxa7 Qxe2 23. Bxe2 ) 21. Re1 Bxe5 22. dxe5 Rd8 23. b4 ( 23. Bb1 Bd1 ) ( 23. Bc2 Bxc2 24. Qxc2 Nc6 { excellent for Black } ) 23... Bc6 $1 24. f3 Qxd3 25. Qxd3 ( 25. bxa5 Qxa3 26. a6 $1 { drawing chances } ) 25... Rxd3 { Even the greatest masters go astray in the judgement of endings of
unlike Bishops } 26. bxa5 Rxa3 27. Bxa7 Rxa5 28. Bd4 Ra2 29. Rb1 Rd2 30. Bc3 Rc2 31. Bd4 Kf7 { Thie ending is an instructive win in all lines. It
differs from the previous example due to the passed extra pawns and Rooks on
the board inhibit the drawing tendencies of unlike Bishops } 32. h4 Kg6 33. Rb4 h6 34. Rb2 Rxb2 { Now even with Rooks off it's a win } 35. Bxb2 Kh5 36. Ba3 Kxh4 37. Bf8 Kg3 38. Bxg7 h5 39. Bh6 Bxf3 $1 40. gxf3 Kxf3 41. Kf1 b5 42. Bd2 h4 43. Bb4 h3 44. Kg1 Ke2 0-1
[Event "Barcelona"]
[Site "Barcelona"]
[Date "1929.??.??"]
[Round "14"]
[White "Aguilera"]
[Black "Capablanca"]
[Result "0-1"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[ECO "E23"]
[PlyCount "70"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Nf3 Qa5 7. Bd2 Qxc5 8. a3 Bxc3 9. Bxc3 Na5 10. Bxa5 Qxa5+ 11. Qb4 Qc7 12. e3 b6 13. g3 Bb7 14. Bg2 a5 15. Qc3 Rc8 16. Rc1 d5 $1 { well timed } 17. cxd5 { White goes in for a
liquidation - but this type of play was Capablanca's strongest suit } ( 17. b3 dxc4 18. bxc4 Bd5 ) ( 17. Nd2 dxc4 18. Bxb7 Qxb7 ) 17... Qxc3+ 18. Rxc3 Rxc3 19. bxc3 Bxd5 { Now Capablanca has his favourable ending because of White's weakened pawns } 20. Nh4 Bc4 ( 20... Bxg2 21. Nxg2 Ne4 22. Ke2 Nxc3+ 23. Kd3 Nd5 24. Rb1 f5 25. Nf4 { White will regain the pawn } ) 21. Kd2 g5 22. Bc6+ ( 22. Nf3 Ne4+ $19 ) 22... Ke7 23. Ng2 Rc8 24. Bb7 Rc7 25. Ba8 Rc8 26. Bb7 Rb8 27. Bc6 Rd8+ 28. Kc2 Rc8 29. Ba4 ( 29. Bb7 Rc7 30. Ba8 Bd5 31. Bxd5 Nxd5 ) 29... Bd5 30. Rg1 Ne4 31. Kb2 Nxf2 32. Ne1 Ng4 33. Bc2 Nxe3 34. Bxh7 Rh8 35. Bd3 Rxh2+ 0-1
[Event "Hamburg"]
[Site "?"]
[Date "1930.??.??"]
[Round "?"]
[White "Maroczy"]
[Black "Betbeder"]
[Result "1-0"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[ECO "C11"]
[PlyCount "93"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Liquidation into a Queen ending } 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 Bxf6 7. c3 Nd7 8. Qc2 Qe7 9. O-O-O b6 10. f4 Bb7 11. g3 O-O-O 12. Bg2 c5 13. Nf3 cxd4 14. Nxd4 Bxd4 15. Rxd4 Nc5 16. Re1 Qc7 17. Red1 { White has slightly more space, but no more. Black decides to liquidate } 17... Rxd4 18. Rxd4 Nxe4 19. Bxe4 Rd8 20. Qd3 $1 ( 20. Bxb7+ Qxb7 21. Rxd8+ Kxd8 22. Qxh7 Qh1+ 23. Kc2 Qg2+ 24. Kb3 Qd5+ 25. c4 Qf3+ 26. Kb4 a5+ 27. Kb5 Kc7 { White cannot win } ) 20... Rxd4 21. Qxd4 f5 ( 21... g6 22. Qh8+ Kd7 23. Bc2 $1 h5 24. Qf8 ) ( 21... Bxe4 22. Qxe4 g6 ) 22. Bxb7+ Qxb7 { The liquidatio
n is complete, and both sides have achieved their aims. Black it is true, has
slightly the worst of it, but he feels this Queen and pawn ending must be
drawable. However, Maracozy was probably the best Queen and pawn ending player
of all time } 23. Kc2 Qa6 ( 23... Qg2+ 24. Kb3 Qxh2 25. Qxg7 { only helps White } ) 24. a4 ( 24. Qxg7 Qe2+ { perpetual check } ) 24... Qb7 25. Kb3 h5 ( 25... Qd5+ 26. Qxd5 exd5 27. c4 $1 dxc4+ 28. Kxc4 Kc7 29. Kd5 $18 ) 26. Qd6 Qf7 27. Ka3 Kb7 28. h4 a5 29. b4 axb4+ 30. cxb4 Qg6 31. Qd7+ Kb8 32. Qd3 Qf6 33. Kb3 Qa1 34. a5 $1 { The winning motif: White uses an outside passed pawn to force a win } 34... bxa5 35. Qb5+ Kc8 ( 35... Kc7 36. Qxa5+ Qxa5 37. bxa5 $18 ) 36. Qc6+ Kb8 37. Qb6+ Kc8 38. Qxe6+ Kd8 39. Qd5+ Ke7 40. bxa5 Qb1+ 41. Ka4 g6 42. a6 Qa1+ 43. Kb5 Qb2+ 44. Kc6 Qf6+ 45. Kc7 Qc3+ ( 45... Qxa6 46. Qd7+ Kf6 47. Qd6+ $18 ) 46. Qc6 Qe3 47. Kc8 $1 1-0
[Event "Nuremberg"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Tarrasch"]
[Black "Vogel"]
[Result "1-0"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[ECO "C66"]
[PlyCount "73"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. Nc3 Nf6 6. O-O Be7 7. Re1 exd4 8. Nxd4 Nxd4 9. Qxd4 Bxb5 10. Nxb5 O-O 11. Bg5 Ng4 12. Bxe7 Qxe7 13. c4 a6 14. Nc3 Qe5 15. Qxe5 dxe5 ( 15... Nxe5 16. b3 c6 17. Rad1 Rad8 18. f4 Ng6 19. g3 b5 $1 ) 16. Nd5 { Tarrasch believed White obtained the advantage with this move } 16... c6 ( 16... Nf6 17. Nxc7 ( 17. Nxf6+ gxf6 18. Rad1 Rad8 $14 ) 17... Rac8 ) 17. Ne7+ Kh8 18. Nf5 { Otherwise ... Pg6 hems in the Knight } 18... Rad8 19. Rad1 g6 20. Nd6 Rd7 21. c5 Kg8 { In order to double Rooks } ( 21... Rfd8 22. Nxf7+ $1 ) 22. Nc4 $1 { Decisive; Black's only choice is between
losing a pawn or giving up the d-file } 22... Rfd8 ( 22... Rxd1 23. Rxd1 f6 24. Rd7 Rf7 25. Rxf7 Kxf7 26. Na5 { wins a pawn } ) 23. Rxd7 Rxd7 24. f3 Nh6 ( 24... Nf6 25. Re2 Re7 26. Rd2 Rd7 27. Rxd7 Nxd7 28. b4 -- 29. Na5 ) 25. Nxe5 Rd2 26. Nc4 Rc2 27. b3 Rxa2 28. Rd1 { Black now faces a decisive incursion down the d-file } 28... a5 29. Rd8+ Kg7 30. Ra8 a4 31. Rxa4 Rxa4 32. bxa4 Ng8 33. Nd6 Kf6 34. Nxb7 Ke5 35. a5 Ne7 36. Nd6 Kd4 37. a6 1-0
[Event "3rd Match Game"]
[Site "m Paris"]
[Date "1909.??.??"]
[Round "?"]
[White "Lasker"]
[Black "Janowsky"]
[Result "1-0"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[ECO "C68"]
[PlyCount "83"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4 6. Qxd4 Bg4 7. Nc3 Qxd4 8. Nxd4 O-O-O 9. Be3 Bb4 10. Ne2 { With a double exchange of pieces Black can weaken the White pawn position } 10... Bxe2 { This exchange, in combination with the next one, forces a
weakening of the White pawns } 11. Kxe2 Bxc3 12. bxc3 { White now has an
isolated a-pawn and double c-pawns. From the defensive point of view, however,
these pawns are very strong, for three of them are blockading four opposing
ones. And since Black has no good way to attack these pawns, the net result is
that White virtually has an extra pawn on the Kingside } 12... Nf6 13. f3 Nd7 14. Rad1 Ne5 15. Rd4 b6 16. f4 $1 { Now Black cannot play ... Nc4 without first undoubling White's c-pawns } ( 16. -- c5 17. Rd2 b5 18. -- Nc4 ) 16... Nd7 17. Rhd1 c5 18. R4d3 Nb8 19. Kf3 Rde8 { Putting pressure on the e-pawn } 20. f5 $5 { Typical Lasker } 20... Re7 ( 20... Nc6 21. Bf4 Re7 22. -- Rhe8 { Tarrasch } ) 21. Bf4 Nc6 22. g4 Rhe8 23. Re3 f6 24. g5 Na5 $2 ( 24... fxg5 25. Bxg5 Ne5+ ) 25. h4 Nc4 26. Re2 Rf7 27. Rg1 Kd7 28. h5 $1 Nd6 ( 28... Ne5+ 29. Bxe5 Rxe5 30. g6 hxg6 31. fxg6 Rf8 32. Rh2 -- 33. h6 ) 29. h6 fxg5 30. Rxg5 g6 { Losing a pawn, but things were bad anyway } 31. fxg6 hxg6 32. Rxg6 Ref8 33. Rg7 $1 Rxg7 34. hxg7 Rg8 35. Rg2 Ne8 36. Be5 Ke6 37. Kf4 Kf7 38. Kf5 Nxg7+ ( 38... Nd6+ 39. Bxd6 cxd6 40. Rg1 ) 39. Bxg7 Rxg7 40. Rxg7+ Kxg7 41. Ke5 Kf7 42. Kd5 $18 1-0
[Event "Budapest"]
[Site "?"]
[Date "1961.??.??"]
[Round "?"]
[White "Pogats"]
[Black "Portisch"]
[Result "0-1"]
[Annotator "43: Liquidation to Preserve an Advantage"]
[ECO "B19"]
[PlyCount "78"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Black forces a favourable liquidation } 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. h4 h6 8. Bd3 Bxd3 9. Qxd3 Qc7 10. Bd2 Ngf6 11. O-O-O e6 12. c4 O-O-O 13. Bc3 c5 14. Kb1 cxd4 15. Bxd4 Bc5 16. Qe2 Bxd4 17. Rxd4 Nb8 $1 { Clearing the way for liquidations on the d-file. Moreover
the exchanges prepared by this move are give an especially forceful character
by the vigorous entry of the Knight on c6 } 18. Rhd1 Nc6 19. Rxd8+ Rxd8 20. Rxd8+ Qxd8 21. Qd2 $2 { An error leading to a poor Knight ending } ( 21. b3 Nd4 22. Nxd4 Qxd4 23. h5 ) 21... Ng4 22. Ne4 { Defence by counterattack } 22... Qxd2 23. Nfxd2 Kc7 $1 ( 23... f5 24. Nc5 e5 25. Ne6 $132 ) 24. Nf1 ( 24. f3 { The e3 square is weakened } 24... Ne3 ) 24... Nd4 { Protecting e6 and thereby threatening ... Pf5 } 25. f3 Ne5 26. b3 Ng6 $1 { Now White must lose material } 27. h5 Nf4 28. Ne3 Nf5 { Black plya
s to win the g-pawn rather than the h-pawn, thus leaving White with isolated
and vulnerable pawns. White resists this plan, but will must lose } 29. Nxf5 exf5 30. Ng3 g6 $1 { Black nears the goal. The g-pawn is lost } 31. Kc2 Nxg2 32. Kd2 Kd6 33. hxg6 fxg6 34. Ke2 Ke5 35. Kf2 Nf4 36. Ke3 Nd5+ $1 37. Kd2 ( 37. cxd5 f4+ ) 37... Nb4 38. a3 Nc6 39. Ke1 Nd4 ( 39... Kf4 40. Kf2 ) 0-1
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Combinative liquidation"]
[Black "In the Opening"]
[Result "*"]
[Annotator "44: Combinative Liquidation"]
[ECO "B59"]
[PlyCount "24"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Combinative liquidation in the opening } 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nb3 Be7 8. Bg5 Nxe4 $1 9. Bxe7 ( 9. Nxe4 Bxg5 10. Nxd6+ Ke7 { The Knight must move, whereupon Black can exchange Queen } ) 9... Nxc3 10. Bxd8 Nxd1 11. Rxd1 ( 11. Bc7 Nxb2 { Leaving Black a pawn up. Notice that this
liquidating combination is possible only because White's b-pawn is undefended,
and because the Knight can escape via a4 } ) 11... Kxd8 12. Rxd6+ Ke7 { The combination is over, and Black has fully freed his position. Moreover in
the resulting endgame he has the initiative } *
[Event "Moscow"]
[Site "?"]
[Date "1956.??.??"]
[Round "?"]
[White "Unzicker"]
[Black "Stahlberg"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[ECO "B64"]
[PlyCount "85"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ A liquidating combination of doubtful value } 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 h6 10. Bh4 Nxe4 { The line actually played is a combinative liquidation aiming at a quick
draw. The Russian Grandmaster Geller has used this system a number of times
with considerable success. The present game, however, casts doubt on the value
of the liquidation } ( 10... Nxd4 11. Qxd4 Qa5 12. e5 dxe5 13. Qxe5 Qxe5 14. fxe5 Nd5 15. Bxe7 Nxe7 { Subsequent experience showed that Black could hold his own in the ending } ) 11. Bxe7 ( 11. Nxe4 Bxh4 12. Nxc6 bxc6 13. Nxd6 Be7 { Black would have no trouble } ) 11... Nxd2 12. Bxd8 Nxf1 13. Nxc6 bxc6 14. Be7 Re8 15. Rhxf1 Rxe7 16. Rxd6 Bb7 { This position is critical to the validity of this combinative liquidation. } 17. g3 $1 ( 17. Re1 c5 18. g3 Rc8 { A quick draw: Szabo-Geller, Amsterdam, 1956 } ) ( 17. Ne4 c5 18. Nxc5 Bxg2 ) 17... c5 18. Rfd1 { White has a slight but definite pull. Hi is master of the
open d-file and the Black pawn structure has been weakened } 18... g5 $2 ( 18... Kf8 { White can achieve a won Knight vs Bishop ending } 19. Rd8+ Rxd8 20. Rxd8+ Re8 21. Rxe8+ Kxe8 22. Nb5 $1 ) ( 18... g6 ) 19. Re1 $1 gxf4 20. gxf4 Kf8 21. Re5 Rc7 ( 21... Rc8 ) 22. Nb5 Rcc8 23. f5 $1 exf5 ( 23... a6 { blockading the pawn } 24. Na3 ) 24. Rxf5 Be4 25. Rf4 Bh7 26. Rdf6 ( 26. Rxh6 Kg7 27. Ra6 Rab8 28. Rxa7 $1 ) 26... Bg8 27. Nd6 Rc7 28. Rxh6 Rd8 29. Nf5 Rcd7 30. b3 Rd1+ 31. Kb2 Rg1 32. Rc6 Rg2 33. h4 Bh7 34. Rxc5 Bg6 35. Rc7 Rh2 36. h5 $1 Bxh5 37. Nh6 Rdd2 38. Nxf7 Kg7 39. Ng5+ Kh6 40. Nf3 Rdf2 41. Rf6+ Bg6 42. Nxh2 Rxf6 43. Ng4+ { the last little combinative liquidation } 1-0
[Event "Goteborg"]
[Site "Goteborg m"]
[Date "1955.??.??"]
[Round "10"]
[White "Spassky"]
[Black "Rabar"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[ECO "B67"]
[PlyCount "89"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Another combinative liquidation from the Sicilian } 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 h6 10. Bh4 { This position is very similiar with the previous one at the same stage. In
combinative liquidation the slightest discrepancy may make all the difference } 10... Nxe4 11. Qe1 $1 ( 11. Bxd8 Nxd2 12. Bh4 Nxf1 13. Rhxf1 ) ( 11. Nxe4 Qxh4 12. Nxc6 Bxc6 13. Nxd6+ Bxd6 14. Qxd6 Qe7 ( 14... Rd8 ) ) 11... Nf6 12. Nf5 Qa5 13. Nxd6+ Bxd6 14. Rxd6 O-O-O 15. Rd1 $1 { An excellent move, the strength of
which is in the fact that it prevent any further liquidation on the d-file. } ( 15. Bxf6 gxf6 16. Qd2 Ne7 17. Be2 Bc6 18. -- Qc7 { there would be general exchange on the d-file } ) 15... Qc7 16. Qf2 Ne7 17. Bd3 Bc6 18. f5 $1 e5 19. Rhe1 Ned5 20. Nxd5 Rxd5 21. Qg3 { A new liquidation combination } 21... e4 ( 21... Ne8 22. Bc4 Rxd1+ 23. Rxd1 f6 24. Qa3 $1 $16 ) 22. Qxc7+ ( 22. Qxg7 $2 Qf4+ 23. Kb1 Qxh4 24. Qxh8+ Rd8 25. Qg7 exd3 ) 22... Kxc7 23. Bxf6 ( 23. Bxe4 Rxd1+ 24. Kxd1 Nxe4 ) 23... exd3 24. Bxg7 Rhd8 ( 24... Rg8 25. f6 dxc2 26. Rxd5 Bxd5 27. Kxc2 ) 25. Be5+ Kc8 26. cxd3 Rxd3 $2 { This leaves White with a sound extra pawn, an ending which is a
win, in spite of the Bishops of opposite colours } ( 26... Rc5+ 27. Kb1 Bxg2 { Splitting up the White pawns so that the extra one would carry very
little weight } ) 27. Rxd3 Rxd3 28. Kc2 Rd8 29. g4 { It would take us too far afiled to go into the problems of this ending } 29... Re8 30. Kd2 Kd7 31. Re3 Rg8 32. Rg3 Ke7 33. Ke3 f6 34. Bc3 Kf7 35. Kf4 Re8 36. Rd3 Re4+ 37. Kg3 Re2 38. h3 Ke7 39. Kh4 Be4 40. Rd2 Re3 41. Bd4 Re1 42. Bf2 Rf1 43. Bc5+ Kf7 44. Rd7+ Kg8 45. Rd6 1-0
[Event "Paris"]
[Site "Paris"]
[Date "1938.??.??"]
[Round "3"]
[White "Capablanca"]
[Black "Rossolimo"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[ECO "D66"]
[PlyCount "63"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Combinative liquidation in a familiar variation of the Orthodox Queen's
Gambit } 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 h6 9. Bh4 dxc4 10. Bxc4 b5 11. Bd3 a6 12. a4 b4 13. Ne4 Nxe4 14. Bxe7 Nxf2 $1 { The point of the combination } ( 14... Qxe7 15. Bxe4 { loses a pawn } ) 15. Bxd8 ( 15. Kxf2 Qxe7 16. Rxc6 e5 { Black gets a fine game } ) 15... Nxd1 16. Kxd1 Rxd8 17. Rxc6 Bb7 $2 ( 17... e5 18. d5 e4 19. Bxe4 Nf6 ) 18. Rc7 Bxf3+ { Further simplifications. } ( 18... Rab8 19. Kd2 Bd5 20. Rhc1 Bb3 21. a5 $16 ) 19. gxf3 Nb6 ( 19... e5 { is now ineffective } 20. Be4 Rac8 21. Rxc8 Rxc8 22. Bb7 ) 20. Rc6 ( 20. a5 { White has no time for } 20... Nd5 ) 20... Nxa4 21. Kc2 { Thus White not only
saves his threatened b-pawn, but also regains the lost a-pawn } 21... Rdb8 ( 21... -- 22. Bxa6 ( 22. Ra1 -- 23. Kb3 ) ) 22. Ra1 b3+ 23. Kc1 Rb4 24. Bxa6 Nb6 25. Kd2 e5 $5 ( 25... -- 26. Rd6 -- 27. Kc3 Ra4 28. Rxa4 Nxa4+ 29. Kxb3 $18 ) 26. dxe5 ( 26. Kc3 Nd5+ ) 26... Nc4+ { Based on two finesses  1)
The unprotected Rook on a1, which prevents White from capturing twice on c4  2)
The interpolation which follows on the next move } 27. Kc3 Nxe5 28. Rc5 Rb6 29. Bd3 $1 { This is the complete refutation. Black can't take the rook without
being mated on the back rank } ( 29. Rxe5 Raxa6 30. Rxa6 Rxa6 31. Kxb3 Ra1 ) 29... Re8 30. Rxe5 Rxe5 31. Ra8+ Re8 32. Rxe8# 1-0
[Event "Netherlands"]
[Site "Nederland"]
[Date "1931.??.??"]
[Round "10"]
[White "Euwe"]
[Black "Capablanca"]
[Result "1/2-1/2"]
[Annotator "44: Combinative Liquidation"]
[ECO "E16"]
[PlyCount "57"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 O-O 8. Nc3 Ne4 9. Qc2 Nxc3 10. Ng5 $1 { Winning the Exchange. Capablanca, however, was
of the opinion that Black has full compensation, which explains why he went
into this line in both the 8th and 10th games of this match } 10... Ne4 ( 10... Qxg5 11. Bxb7 Nxe2 12. Qxe2 Nc6 13. Bxa8 { Black has little to show for the lost Exchange } ) 11. Bxe4 Bxe4 12. Qxe4 Qxg5 13. Qxa8 Nc6 14. Qb7 Nxd4 15. Rd1 ( 15. Qe4 Qa5+ 16. Kf1 Nb3 ) ( 15. O-O Nxe2+ 16. Kg2 f5 17. f4 { winning chances } ) 15... c5 $1 { It is not easy for White to get any enduring advantage } ( 15... Qe5 { 8th game } 16. e3 Nc2+ 17. Ke2 d5 18. Rd2 Qxb2 19. cxd5 $16 ) 16. e3 Nc2+ 17. Kd2 Qf5 18. Qg2 Nb4 19. e4 Qf6 20. Kc1 Nxa2+ 21. Kb1 Nb4 22. Rxd7 Nc6 23. f4 e5 24. Rhd1 Nd4 25. Rxa7 exf4 26. gxf4 Qxf4 27. Re1 Nf3 28. Re2 Nd4 29. Re1 1/2-1/2
[Event "Budapest"]
[Site "Budapest"]
[Date "1929.??.??"]
[Round "8"]
[White "Prokes"]
[Black "Capablanca"]
[Result "0-1"]
[Annotator "44: Combinative Liquidation"]
[FEN "2r3k1/pp3pp1/1r2pb1p/1q1pN3/3P4/2P3P1/PPQ2P1P/1R2R2K b - - 0 28"]
[PlyCount "9"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Simple liquidation } 28... Bxe5 29. Rxe5 Qc4 $1 { The point: the Black
Queen attacks not only the White a-pawn, but also the d-pawn, this being
possible because White's Queen is unguarded. Black thereby wins a pawn } 30. Qc1 Qxa2 31. Re1 a5 32. Kg2 a4 { and Black won by weight of material } 0-1
[Event "Beverwijk"]
[Site "?"]
[Date "1958.??.??"]
[Round "?"]
[White "Euwe"]
[Black "Milic"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[FEN "3q1n2/4bQpk/r2p2np/2pP4/2N1N3/6B1/1P4PP/5RK1 w - - 0 1"]
[PlyCount "33"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ A more complex liquidating combination } 1. Bxd6 Nd7 ( 1... Bxd6 2. Nf6+ ) 2. Bxe7 Nxe7 3. Ncd6 Ne5 { Black's last hope depends on this move } 4. Nf6+ Kh8 5. Nfe8 $1 Nxf7 6. Nxf7+ Kg8 7. Nxd8 { White has won a piece } 7... Nxd5 ( 7... Ra8 8. Nxg7 Kxg7 ( 8... Rxd8 9. Ne6 Rxd5 10. Rf8+ Kh7 11. Rf7+ ) 9. Rf7+ Kg6 10. Rxe7 Rxd8 11. Re5 Kf6 12. Re6+ ) 8. Nb7 Rb6 9. Nxc5 Rxb2 10. Rf3 Rb1+ 11. Kf2 Rb2+ 12. Kg3 Re2 13. Nd6 g5 14. Nce4 Nf4 15. Rf2 Re3+ 16. Kg4 Kh7 17. Kf5 1-0
[Event "New York"]
[Site "New"]
[Date "1927.??.??"]
[Round "12"]
[White "Capablanca"]
[Black "Vidmar"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[ECO "C98"]
[PlyCount "73"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ Capablanca once more the liquidation artist } 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 O-O 12. h3 Nc6 13. d5 Nd8 14. a4 b4 15. Nc4 a5 16. Nfxe5 $1 { A celebrated
liquidation combination. Alekhine expressed the opinoun that it should not
have led to a winning ending  It is undeniable, however, that Capablanca's
method leads in any case to an ending which is favourable; and this was all
Capablanca usually needed in order to win } ( 16. Be3 Nd7 17. Nfd2 { Alekhine } ) 16... Ba6 { An interpolation which doesn't alter anything } 17. Bb3 dxe5 18. d6 Bxd6 19. Qxd6 Qxd6 20. Nxd6 { This is the ending which Capablanca was playing for } 20... Nb7 $2 { This is th
e weak move, according to Alekhine. Why, he ask, should Black voluntarily
leave his opponent the two Bishops } ( 20... Rb8 21. Bc4 ( 21. Nb5 { Golombek (Capablanca's Best Hundred Games) } 21... Bxb5 22. axb5 Rxb5 23. Bc4 Rb6 24. Rxa5 { Liquidation in favour of White, with his two Bishops coming into
their own and a White Rook penetrating the enemy lines } ) 21... Bxc4 22. Nxc4 Nc6 ) 21. Nxb7 Bxb7 22. cxb4 cxb4 ( 22... axb4 23. f3 ( 23. Be3 $1 Nxe4 ( 23... Rfc8 24. Rec1 Ra5 25. f3 Ba6 26. Bc4 { Black has a serioiusly weakend Queenside } ) 24. f3 Nf6 25. Bxc5 ) 23... Ba6 ) 23. f3 Rfd8 ( 23... Nd7 24. Be3 Rfc8 $1 25. Red1 Rc7 { Alekhine } 26. Rd6 Rac8 27. Rad1 { Golombek } ) 24. Be3 h6 25. Red1 Bc6 26. Rac1 Be8 27. Kf2 Rxd1 28. Rxd1 Rc8 29. g4 $1 { Threatening to drive the Knight away by Ph4
and Pg5, and then win a pawn by Rd5 } ( 29. Bb6 { Too hasty } 29... Nd7 30. Bxa5 Nc5 ) 29... Bd7 { This loses rapidly, but a saving defence can't be found } ( 29... -- 30. h4 -- 31. g5 ) 30. Bb6 Be6 { Loss of a pawn is unavoidable } ( 30... Ra8 31. Bc7 ) 31. Bxe6 fxe6 ( 31... Rc2+ 32. Ke3 fxe6 33. Rd2 ) 32. Rd8+ Rxd8 33. Bxd8 Nd7 34. Bxa5 Nc5 35. b3 $1 ( 35. Bxb4 $4 Nxa4 ( 35... Nd3+ ) 36. b3 Nb6 37. Bd6 Nd7 38. Ke3 { Alekhine } ) 35... Nxb3 36. Bxb4 Nd4 37. a5 1-0
[Event "Moscow"]
[Site "?"]
[Date "1956.??.??"]
[Round "?"]
[White "Jamsarat"]
[Black "Kramer"]
[Result "0-1"]
[Annotator "44: Combinative Liquidation"]
[ECO "B62"]
[PlyCount "80"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Bg5 Be7 8. Qd2 a6 9. Bb3 h6 10. Bh4 O-O 11. O-O-O Bd7 12. g4 Nxe4 $1 { A liquidating
combination which we have met before in this chapter. This time the
consequences are ramified } 13. Nxe4 ( 13. Bxe7 Nxd2 14. Bxd8 Nxd4 15. Rxd2 Nxb3+ 16. axb3 Rfxd8 17. Rxd6 Bc6 18. Rhd1 Rxd6 19. Rxd6 Kf8 { the endgame
is in Black's favor in view of the weakened state of White's Kingside } ) 13... Bxh4 14. Nxd6 Nxd4 $1 15. Qxd4 ( 15. Nxb7 Qb6 16. Qxd4 Qxd4 17. Rxd4 Bc6 $19 { Black wins a piece } ) 15... Bc6 16. Rhg1 Qf6 17. Qxf6 ( 17. f4 Qxd4 18. Rxd4 Bf2 $19 ) 17... Bxf6 18. f4 Rad8 { It is now apparent that White's advanced cavalry post cannot be maintained } 19. Rd3 ( 19. g5 hxg5 20. fxg5 Be5 21. Nc4 Bxh2 { With the Bishop pair now
in fully cry it is clear that the liquidation which started at the diagramed
position has worked out in Black's favour } ) 19... Rd7 20. Ne4 Bd4 21. Rgd1 Rfd8 22. c3 Bb6 23. Rxd7 Be3+ ( 23... Rxd7 24. Rxd7 Bxd7 25. Kd2 { White has overcome the worst of his worries } ) 24. Kb1 ( 24. R7d2 Bxe4 25. Bc2 Bf3 $1 $19 { White loses a Rook } ) 24... Rxd7 25. Rxd7 Bxd7 26. Nd6 Bc6 27. f5 Bf4 28. Nc8 Be4+ ( 28... exf5 29. gxf5 Bxh2 30. Ne7+ Kf8 31. Nxc6 { endings of Bishops of opposite colour } ) 29. Bc2 Bxc2+ 30. Kxc2 Bxh2 { Black won as follows } 31. fxe6 fxe6 32. c4 Kf7 33. Kd3 Bc7 34. c5 Ke8 35. b4 Kd7 36. Nb6+ Bxb6 37. cxb6 g6 38. a4 Kc6 39. Ke4 h5 40. gxh5 gxh5 0-1
[Event "Bognor Regis"]
[Site "?"]
[Date "1961.??.??"]
[Round "?"]
[White "Darga"]
[Black "Lehmann"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[FEN "3r2kr/ppp1qp1p/2n3p1/2QB1P2/3P4/P7/1P5P/1K1R3R w - - 0 1"]
[PlyCount "9"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. Bxc6 Qxc5 2. dxc5 Rxd1+ 3. Rxd1 bxc6 4. Rd8+ Kg7 5. f6+ $1 1-0
[Event "USSR Ch"]
[Site "?"]
[Date "1960.??.??"]
[Round "?"]
[White "Korchnoi"]
[Black "Gurgenidze"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[FEN "1rb1nqk1/3n1rbp/p2p2p1/2pPpp2/1PP1P3/R1BN1PP1/2Q1B1NP/5RK1 w - - 0 1"]
[PlyCount "19"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. bxc5 dxc5 2. exf5 gxf5 3. f4 $1 Qe7 ( 3... e4 4. Ne5 $1 { Unless Black
exchanges Knights, giving White connected pawns, he will lose the exchange
after Nc6 } 4... -- ( 4... Nxe5 5. fxe5 ) 5. Nc6 ) ( 3... exf4 4. Ngxf4 -- 5. Bh5 ( 5. Ne6 ) ) 4. fxe5 Nxe5 5. Nxe5 Bxe5 6. Bxe5 Qxe5 7. Re3 { Typical of this
sort of combination. After several consecutive exchanges comes the deadly
follow-up. Possible Black had hoped, when embarking on this sequence of moves,
that he would be able to defend himself with ... Qd4 } 7... Qd4 8. Rd1 ( 8. Rf4 Qa1+ ) 8... Rb2 9. Rxd4 Rxc2 10. Rxe8+ 1-0
[Event "Budapest"]
[Site "?"]
[Date "1961.??.??"]
[Round "?"]
[White "Honfi"]
[Black "Lengyel"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[FEN "r1bq3k/1p2bQpp/p3p3/2n5/3NN3/PP2B3/2P3PP/5RK1 w - - 0 1"]
[PlyCount "9"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. Nxc5 Bxc5 2. Nc6 $3 { A fantastic move } 2... bxc6 ( 2... Bxe3+ 3. Kh1 { The Bishop is tied to the defense of the f8 square, where White is threatening
mate } 3... Qg8 4. Qxg8+ Kxg8 5. Ne7+ Kh8 6. Rf8# ) 3. Bxc5 Bd7 ( 3... h6 4. Qg6 Bd7 5. Rf7 ) 4. Bd4 e5 ( 4... Qg8 5. Qxd7 Rd8 6. Bxg7+ ) 5. Bxe5 1-0
[Event "Buenos Aires"]
[Site "?"]
[Date "1914.??.??"]
[Round "?"]
[White "Capablanca"]
[Black "Villegas"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[ECO "D04"]
[PlyCount "67"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 d5 2. Nf3 Nf6 3. e3 c6 4. Bd3 Bg4 5. c4 e6 6. Nbd2 Nbd7 7. O-O Be7 8. Qc2 Bh5 9. b3 Bg6 10. Bb2 Bxd3 11. Qxd3 O-O 12. Rae1 Qc7 13. e4 dxe4 14. Nxe4 Nxe4 15. Rxe4 Bf6 16. Qe3 c5 17. Ne5 cxd4 ( 17... Nxe5 18. dxe5 Be7 ) 18. Nxd7 $3 { A magnificent combination } ( 18. Bxd4 Nxe5 19. Bxe5 Bxe5 20. Rxe5 b6 { The liquidation Black is hoping for, securing the d-file first } ) 18... Qxd7 ( 18... dxe3 19. Nxf6+ gxf6 ( 19... Kh8 20. Rh4 h6 21. Rxh6+ gxh6 22. Ne8+ $16 { White has two minor pieces for the Rook } ) 20. Rg4+ Kh8 21. Bxf6# ) 19. Bxd4 Bxd4 $2 ( 19... Qe7 ) 20. Rxd4 Qc7 21. Rfd1 Rfd8 22. b4 Rxd4 23. Qxd4 { White's positional advantage is now clear. His control of the d-file makes the
Queenside majority a formidable weapon in his hand } 23... b6 ( 23... a6 { A shade better, making it harder for White to create a passed pawn } ) 24. g3 Rc8 25. Rc1 Rd8 26. Qe3 { Black's seizure of the d-file is only an apparent
success. He will not be able to profit from the file, for at any moment White
may play Pc5, creating a passed pawn which will tie down Black's pieces
completely } 26... Kf8 27. c5 bxc5 28. bxc5 Rd5 29. Qe4 $1 g6 ( 29... Rxc5 30. Qb4 ) 30. c6 Kg7 31. a4 Rd6 ( 31... Rd8 { the only way to hold out } ) 32. Qe5+ $1 f6 33. Qxd6 Qxd6 34. c7 1-0
[Event "USSR Ch"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Furman"]
[Black "Nezmetdinov"]
[Result "1-0"]
[Annotator "44: Combinative Liquidation"]
[FEN "2rr2k1/pb1q1pbp/1pn1p1p1/1Q6/P2PB3/BN2P3/5PPP/1RR3K1 b - - 0 1"]
[PlyCount "10"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ A wild combination } 1... Nxd4 $5 2. Qxd7 Ne2+ 3. Kf1 Nxc1 ( 3... Rxd7 4. Bxb7 Rxc1+ 5. Nxc1 Nxc1 6. Rxc1 $18 ) 4. Qxc8 ( 4. Qxd8+ Rxd8 5. Bxb7 Rd1# ) 4... Ba6+ 5. Ke1 ( 5. Qxa6 Rd1# ) 5... Rxc8 6. Rxc1 $18 { Black is a piece short } 1-0
[Event "New York"]
[Site "New York ch-US  Rd: 2"]
[Date "1960.??.??"]
[Round "?"]
[White "Lombardy"]
[Black "Fischer"]
[Result "0-1"]
[Annotator "44: Combinative Liquidation"]
[ECO "B54"]
[PlyCount "86"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 Nc6 6. c4 e6 7. Nc3 Be7 8. Be3 O-O 9. Nc2 d5 10. cxd5 exd5 11. Nxd5 Nxd5 12. Qxd5 Qc7 13. Qb5 Bd7 14. Rc1 Nb4 $1 15. Nxb4 { White takes up the gauntlet unwisely } 15... Qxc1+ 16. Bxc1 Bxb5 17. Nd5 { This was the tactical finesse that White was relying on
when he went in for the liquidation. Black, however, has seen further } 17... Bh4+ $1 { The real point of Black's 14th move } 18. g3 Bxf1 19. Kxf1 Bd8 { The combination has ended and Black has won the exchange. True, White has
some compensation - a pawn and advantage in space - but in the long run it
will not be enough. } 20. Bd2 Rc8 21. Bc3 f5 $1 22. e5 Rc5 23. Nb4 Ba5 24. a3 Bxb4 25. axb4 Rd5 26. Ke2 Kf7 27. h4 Ke6 28. Ke3 Rc8 29. Rg1 Rc4 30. Re1 Rxc3+ $1 31. bxc3 Rxe5+ 32. Kd2 Rxe1 33. Kxe1 { This liquidation has produced a pawn ending which is won for Black } 33... Kd5 34. Kd2 Kc4 35. h5 b6 36. Kc2 g5 37. h6 f4 38. g4 a5 39. bxa5 bxa5 40. Kb2 a4 41. Ka3 Kxc3 42. Kxa4 Kd4 43. Kb4 Ke3 0-1
[Event "Moscow"]
[Site "Moscow-ch  ;HCL 43"]
[Date "1945.??.??"]
[Round "?"]
[White "Fridstein"]
[Black "Smyslov"]
[Result "0-1"]
[Annotator "44: Combinative Liquidation"]
[ECO "D15"]
[PlyCount "92"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4 Be7 9. O-O O-O 10. Qe2 Bb7 11. Rd1 a5 12. Bd2 Nbd7 13. Nc1 Qb6 14. Nd3 c5 15. Nde5 Nxe5 16. Nxe5 Rad8 { White offers a pawn } 17. Bb5 ( 17. dxc5 Qxc5 $1 { White would get into difficulties. He therefore offers a pawn in
order to try for counterplay on the d-file } ) 17... cxd4 18. exd4 Qxd4 ( 18... Rxd4 19. Be3 Rxd1+ 20. Rxd1 Qc7 21. Nd7 $1 Rd8 ( 21... Ra8 22. Nxf6+ Bxf6 23. Rd7 ) 22. Bb6 { Smyslov } ) 19. Nc4 Qd5 $1 { Black plays for attack, and is not concerned about holding the extra pawn } 20. Qf1 Qh5 21. Nxa5 Bf3 $3 22. gxf3 ( 22. Nc6 Bd6 23. h3 Bxc6 24. Bxc6 Qe5 25. g3 Qxb2 { Black wins a pawn } ) 22... Rxd2 23. Rxd2 Qg5+ 24. Kh1 Qxd2 { The outcome of the combination is clear enough.
White's King position is wrecked, and this fact now dictates the course of the
game } 25. Qe2 Qf4 26. Nc4 Rc8 27. Rd1 Rc5 28. Ne3 g6 ( 28... Rh5 29. Nf1 Bd6 30. Qe3 Rxh2+ 31. Kg1 $1 { Smyslov } ) 29. Ng2 Qc7 30. Ne3 b3 $1 31. Qd3 Qf4 32. Ng2 Qb4 33. Ne3 Qh4 34. a5 Rh5 35. Nf1 Qxf2 36. Rd2 ( 36. -- Bc5 ) 36... Qc5 37. Bc4 Qxa5 38. Bxb3 Kg7 39. Ng3 Rh4 40. Kg2 Rb4 41. Qc3 ( 41. -- Rxb3 42. Qxb3 Qxd2+ ) 41... Qb5 42. Rd3 Bd6 $1 { Breaking all resistance } 43. Re3 ( 43. Rxd6 Rxb3 { the b-pawn falls } ) 43... Bf4 44. Rd3 Be5 45. Qc2 Nd5 46. Ne2 Rh4 { Black wins at least another pawn } 0-1
[Event "London"]
[Site "?"]
[Date "1851.??.??"]
[Round "?"]
[White "Anderssen"]
[Black "Kierseritzky"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[ECO "C33"]
[PlyCount "45"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 b5 5. Bxb5 Nf6 6. Nf3 Qh6 7. d3 Nh5 8. Nh4 Qg5 9. Nf5 c6 10. g4 Nf6 11. Rg1 cxb5 { We do not intend to present a
compreshensive analysis of this famous game. We content ourselves with
indicating poits at which Black is guilty of undue greed for material. This is
the first such point; in return for the piece White obtains a big lead in
development } 12. h4 Qg6 13. h5 Qg5 14. Qf3 Ng8 { The defender should be
at any moment ready to return the material he has won. The text is motivated
by precisely the opposite principle. In order to hold on to his extra piece
Black is willing to deprive himself of what little development he has } ( 14... Nxg4 ) 15. Bxf4 Qf6 16. Nc3 Bc5 17. Nd5 Qxb2 18. Bd6 $1 { The finish of this
game is very fin, and is just famous - notwithstanding the fact that its
earlier part, as Dr. Lasker said, is an affront to our susceptibilities } 18... Bxg1 19. e5 Qxa1+ 20. Ke2 Na6 { Black's move is still
motivated, albeit subconsciously, by the determination not to relinquish
material. He rules out White's check at c7 } ( 20... Ba6 { Black could have given White more trouble. } ) 21. Nxg7+ Kd8 22. Qf6+ $1 Nxf6 23. Be7# 1-0
[Event "San Sebastian"]
[Site "San"]
[Date "1911.??.??"]
[Round "1"]
[White "Capablanca"]
[Black "Bernstein"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[EventDate "1911.??.??"]
[FEN "4rr2/p1pb1ppk/2ppn2p/q4N2/4P1P1/1P2QP2/P1P1N2P/3RR1K1 b - - 0 22"]
[PlyCount "26"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ This was the position after White's 22nd move - Nd4-e2. It is apparent White
has an attack against the Black King's position but it is not so clear how to
advance the attack. Black was evidently of the opnion that his King was secure
enough and therefore deemed the time fipe for a little plundering } 22... Qxa2 $2 23. Neg3 Qxc2 $2 24. Rc1 { Played mainly to prevent Black from exchanging Queens by ... Qc5 } 24... Qb2 25. Nh5 Rh8 ( 25... g6 26. Qxh6+ Kg8 27. e5 $1 gxh5 28. gxh5 ) 26. Re2 Qe5 27. f4 Qb5 28. Nfxg7 { The correctness of this offer hinges on the question
whether White's Knight will ever escape after ... Nxg7 } 28... Nc5 { This loses rapidly and hopelessly } ( 28... Nxg7 29. Nf6+ Kg6 30. Nxd7 f6 31. e5 $1 Kf7 32. Nxf6 Re7 33. Ne4 dxe5 34. fxe5 $18 ) ( 28... Rd8 ) ( 28... Qb6 ) 29. Nxe8 Bxe8 30. Qc3 f6 31. Nxf6+ Kg6 32. Nh5 Rg8 33. f5+ Kg5 34. Qe3+ Kh4 35. Qg3+ 1-0
[Event "Ch World (match)"]
[Site "New York (USA)"]
[Date "1890.??.??"]
[Round "16.98"]
[White "Gunsberg"]
[Black "Steinitz"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[ECO "C52"]
[PlyCount "43"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. O-O Qf6 7. d4 h6 8. Qa4 Bb6 9. Bb5 Nge7 10. Ba3 exd4 11. e5 Qg6 12. cxd4 Nd5 13. Re1 Nf4 14. g3 Qg4 15. Nbd2 Nh3+ 16. Kg2 Ng5 17. Bb2 Ne7 18. Be2 Ne6 19. Kh1 Qf5 { Here Gunsberg
picked up his KN with the clear intention of moving it to h4. He even placed
it momentarily on that square, and then hastily retracted the move. After a
while Gunsberg picked up the Knight again and played Nh4. As he did so he
shook his head and shrugged his shoulders as if to say "I'm bound to move this
piece and I can't find any better place to put it" } 20. Nh4 Qxf2 { Steinitz played this move without pausing to think. In veiw of what had
happened he was quite convinced that his opponent had overlooked, until too
late, that his f-pawn was unprotected } 21. Ne4 { Rude awakening. The only
square for the Queen is e3, but then come Bf1 and the Queen is snared in
mid-board } 21... Qe3 22. Bf1 { The instince to win material can manifest itslef
in some strange ways. We must make it clear, howevver, that Gunsberg's tactics
here are not to be condoned. After the game Steinitz pointed out that Gunsberg
had himself been the victim of similar tactics, in a match game with Chigorin,
and that on that occasion Gunsberg had been extremely angry } 1-0
[Event "New York"]
[Site "?"]
[Date "1924.??.??"]
[Round "?"]
[White "Reti"]
[Black "Marshall"]
[Result "0-1"]
[Annotator "45: Eagerness to win material"]
[ECO "A15"]
[PlyCount "60"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. Nf3 Nf6 2. c4 d5 3. cxd5 Nxd5 4. d4 Bf5 5. Nc3 e6 6. Qb3 Nc6 7. e4 Nxc3 8. exf5 Nd5 9. Bb5 Bb4+ 10. Bd2 Bxd2+ 11. Nxd2 exf5 12. Bxc6+ bxc6 13. O-O O-O 14. Qa4 Rb8 15. Nb3 Rb6 16. Qxa7 Qg5 17. Qa5 c5 18. Qxc5 Nf4 19. g3 Rh6 { Alekhine states that Black now has all sorts of threats } 20. Qxc7 $2 { White is guilty of material greed } ( 20. -- Qh5 21. h4 Qf3 ) ( 20. Qc2 Nh3+ ( 20... Rxh2 21. Kxh2 Qh5+ 22. Kg1 Qf3 23. gxf4 Qg4+ { draw by perpetual check } ) 21. Kh1 f4 22. Qc5 { White will defend without difficulty } ) 20... Ne2+ 21. Kg2 Qg4 22. Rh1 f4 23. f3 ( 23. -- f3+ 24. Kf1 Qh3+ 25. Ke1 Qg2 26. Rf1 Rxh2 27. -- Qxf1+ $1 ) 23... Qh3+ 24. Kf2 Rc8 $1 { This is much strong. The White Queen is
now forced to leave the vital dark-squared diagonal } ( 24... Nxg3 25. Qxf4 $1 Nxh1+ 26. Rxh1 ) 25. Qa5 Nxg3 $1 26. Rhg1 ( 26. hxg3 Qxg3+ 27. Ke2 Qg2+ 28. Kd3 Rxh1 29. Rxh1 Qxf3+ 30. Kd2 Qxh1 $19 ) 26... Qxh2+ 27. Rg2 Qh4 28. Rc1 Re8 { Cutting off the King's flight to e1 and threatening ... Re2+ } 29. Qb5 ( 29. -- Re2+ 30. Kg1 Qh1# ) 29... Ne4+ 30. Kf1 Qh1+ 0-1
[Event "Berne"]
[Site "Bern (07)"]
[Date "1932.??.??"]
[Round "?"]
[White "Alekhine"]
[Black "Flohr"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[ECO "D05"]
[PlyCount "55"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. c3 Nc6 6. Nbd2 Be7 7. O-O Qc7 8. Qe2 O-O 9. e4 dxe4 10. Nxe4 cxd4 11. Nxd4 Nxd4 12. cxd4 Nxe4 13. Bxe4 f5 14. Bf3 Bf6 15. Rd1 Rd8 16. Be3 { The d-pawn is obviously weak, but in order to win it
Black will  have to weaken his position seriously. The sequel demonstrates
that White will be able to take powerful advantage of this weakening, mainly
because of his advanced development } 16... f4 $2 ( 16... g5 17. h3 Qg7 18. Rac1 f4 19. Bd2 Bxd4 20. Ba5 ) 17. Rac1 Qd6 18. Bd2 Bxd4 ( 18... Rb8 { an attempt to develop the Queenside } 19. a3 Bd7 20. Bb4 $16 ) 19. Ba5 $1 Rd7 ( 19... Re8 20. Qc4 { White wins a piece } ) 20. Rxd4 $1 { The winning shot! Deflecting the guard of e6 } 20... Qxd4 21. Qxe6+ Rf7 ( 21... Kf8 22. Re1 $1 g6 23. Qe8+ Kg7 24. Bc3 { winning the Queen } ) 22. Rxc8+ Rxc8 23. Qxc8+ Rf8 24. Qxb7 Re8 25. h3 ( 25. Bc3 $4 Qxc3 ) 25... Qc5 26. Bc3 Qe7 27. Bd5+ Kh8 28. Qxe7 1-0
[Event "Zurich"]
[Site "Zurich (05)"]
[Date "1934.??.??"]
[Round "?"]
[White "Euwe"]
[Black "Alekhine"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[FEN "2nq2k1/2r2ppp/p1p1r3/PpQ1N3/1P1PR3/8/5PPP/2R3K1 b - - 0 30"]
[PlyCount "46"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

30... f6 { Hoping to win a piece } ( 30... Ne7 ) 31. Nf7 $1 Qe8 ( 31... Kxf7 32. Qh5+ Ke7 33. Rxe6+ Kxe6 34. Re1+ Kd6 35. Qc5+ Kd7 36. Qf5+ Kd6 37. Qe6# ) 32. Rxe6 Qxe6 33. Nd8 Qe4 34. Nxc6 { Instead of winning a piece Black has lost
a pawn. The rest of the game - not important to our theme - went as follows } 34... h6 35. d5 Qd3 36. h3 Qd2 37. g3 Kh8 38. Kg2 Qd3 39. Re1 Kh7 40. Re3 Qd2 41. Re8 Qd3 42. Qd4 Qc4 43. Qe4+ Qxe4+ 44. Rxe4 Kg8 45. Nb8 Kf7 46. Nxa6 Rd7 47. Rd4 Ne7 48. d6 Nf5 49. Rd5 Nxd6 50. Nc5 Rd8 51. Ne4 Nb7 52. a6 Ke6 53. Rxd8 1-0
[Event "Vienna"]
[Site "?"]
[Date "1958.??.??"]
[Round "?"]
[White "Kinzel"]
[Black "Duckstein"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[ECO "C56"]
[PlyCount "37"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. O-O Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Bd2 Bb4 11. Nxd4 Nxd4 12. c3 Qd5 13. cxb4 O-O 14. Rc1 Rad8 15. Rc5 $1 Qxa2 $2 ( 15... Qd7 ) 16. Bc3 Nb5 { This doesn't
trouble White; but it is questionable if there is a good defence now } 17. Nf6+ $2 gxf6 18. Bxf6 $1 Rd5 ( 18... -- 19. Rg5# ) 19. Qd2 $1 1-0
[Event "Antwerp"]
[Site "?"]
[Date "1931.??.??"]
[Round "?"]
[White "Koltanowsky"]
[Black "Simul"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[ECO "B15"]
[PlyCount "29"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Bd3 Qxd4 6. Nf3 Qd8 7. Qe2 Bf5 8. Nxf6+ gxf6 9. Bxf5 Qa5+ 10. Bd2 Qxf5 11. O-O-O Qe6 12. Qd3 Qxa2 { It must be mentioned that this game was played in an exhibtion in which White
was without sight of the boards or men. The opponent jumps to the conclusion
that the blindfold player has overlooked something; hence the pawn grab. The
refutation is immediate and shattering } 13. Qd8+ $1 Kxd8 14. Ba5+ Ke8 15. Rd8# 1-0
[Event "Moscow"]
[Site "Moscow"]
[Date "1959.??.??"]
[Round "?"]
[White "Spassky"]
[Black "Tal"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[FEN "6k1/8/p3r2p/1p1pPpp1/1n1pP3/1Pq4P/PR4PB/3QN1K1 b - - 0 34"]
[PlyCount "14"]
[SetUp "1"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

{ This position is quite different from the last one. It is a snapshot from a
hard serious game in which the contestants had been doing there best to outdo
one another. By now both were likely in time trouble, and this would explain
Black's next move. Or is the capture of the Rook under such circumstances
rather to be to be considered a reflex action } 34... Qxb2 $1 ( 34... dxe4 { With all White pieces badly placed in contrast to the Black ones the Black
pawn mass would surely decide the issue in the long run } 35. Rf2 e3 36. Rxf5 d3 37. Nxd3 Nxd3 38. Qf1 Qc5 $19 ) 35. exf5 Rc6 36. Bg3 $1 ( 36. Qh5 Qc3 $1 ) 36... d3 ( 36... Nc2 37. Qh5 Nxe1 38. Qe8+ Kh7 39. Qe7+ Kg8 40. Bxe1 Qc1 ( 40... Rc1 41. Qe8+ $1 Kh7 42. f6 Rxe1+ 43. Kh2 $18 ) 41. f6 Qxe1+ $1 42. Kh2 Rxf6 43. Qxf6 Qe3 44. Qg6+ $16 ) 37. Qh5 d2 ( 37... Rc7 ) 38. Qe8+ Kg7 39. Qe7+ Kh8 40. f6 dxe1=Q+ 41. Bxe1 1-0
[Event "Moscow"]
[Site "?"]
[Date "1925.??.??"]
[Round "?"]
[White "Illyin-Zhenevsky"]
[Black "Lasker"]
[Result "0-1"]
[Annotator "45: Eagerness to win material"]
[ECO "B50"]
[PlyCount "76"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 c5 2. Nc3 e6 3. Nf3 d6 4. g3 Nf6 5. Bg2 Be7 6. O-O O-O 7. b3 Nc6 8. Bb2 Bd7 9. d4 cxd4 10. Nxd4 Qa5 11. Qd2 Rac8 12. Rad1 Kh8 13. Nce2 Qxa2 $6 { After what we have been saying in the last few examples about greed for
material, comment on this move seem superflous, especially as it leads to the
loss of the Black Queen in a few move. Appearance can be deceptive. Lasker is
not just grabbing a pawn. Anyone who really knows his play will realize that
Lasker is choosing this line of of play purposely. Better than any other
player Lasker understood human nature.  After this move Black's position is
very sound. White's material advantage certainly gives him the better chances,
but against this must be weighed the fact that the Queen sacrifice will upset
White's equilibrium. He is sure to think that Lasker has made a bad blunder,
and so will feel bound to play for a win } ( 13... Qc7 14. c4 $16 ) ( 13... Qxd2 { White has the better ending } ) 14. Ra1 Qxb2 15. Rfb1 Qxb1+ 16. Rxb1 Rfd8 17. c4 Ne8 18. f4 { In the tournament book Bogolyubov condemns this move as a
weakening of the Kingside, and recommends 18. Nxc6 } ( 18. Nxc6 { Bogolyubov } ) 18... a6 19. Kh1 Nc7 20. Qe3 Rb8 21. Rd1 Nb4 { Black's last few moves
appeared to be preparing for the advance ... Pb5, but Lasker suddently changes
his plan and decides to exploit the strategic point at b4 } 22. Qc3 a5 23. Ra1 { The Rook has no business here, as Bogolyubov correctly comments } 23... b6 24. Qe3 $2 { A blunder which loses the exchange } 24... e5 $1 25. Nf5 Bxf5 26. exf5 Nc2 27. Qc3 Nxa1 28. Qxa1 Bf6 29. Qg1 d5 $1 { Thus Black assumes the initiative in the centre } 30. cxd5 Nxd5 31. fxe5 Bxe5 32. g4 f6 33. h4 b5 { Now Black's extra pawn on the Queenside bring a quick decision } 34. Nd4 Ne3 $1 { Forcing a winning liquidation: the White Knight can't move because of ... Rd1 } 35. Qxe3 Rxd4 36. Bf3 a4 37. h5 a3 38. Qe2 Rbd8 0-1
[Event "Stockholm"]
[Site "?"]
[Date "1937.??.??"]
[Round "?"]
[White "Petursson"]
[Black "de Groot"]
[Result "0-1"]
[Annotator "45: Eagerness to win material"]
[ECO "E81"]
[PlyCount "80"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bd3 e5 7. d5 Nbd7 8. Nge2 Nh5 9. Be3 f5 10. exf5 gxf5 11. Qc2 Nc5 12. Bxc5 dxc5 13. O-O-O { White's last
move was a preparation for Pg4, which wold lead to a strong attack. Black
refutes this scheme in a suprising manner } 13... Qg5+ $1 14. Kb1 Qxg2 $1 { In the present circumstances this is not the kind of greed which we have
seen in several of the previous positions in this cahpter. Rather it is a
level headed means of removing the sting out of the dangerous enemy pawns. } 15. Rhg1 Qxf3 16. Ng3 Nxg3 17. Rxg3 Qh5 18. Rdg1 Rf7 19. Qg2 Qh6 { Holding everything. Without the help of the sacrificed pawn White has now way
of further strengthening his position } 20. Rh3 Qf6 21. Qe2 e4 { Now that Black's united passed pawns begin to roll the day is won. White tries
one more desperate offer, which Black accepts with sang-froid as he did the
two pawns earlier in the game } 22. Qh5 exd3 23. Qxh7+ Kf8 24. Rhg3 Qh6 $1 25. Qxh6 Bxh6 26. Rg8+ Ke7 27. Re1+ Kf6 28. d6 ( 28. Ree8 Re7 $1 ) 28... Rf8 29. Nd5+ Kf7 30. Rgg1 Be6 31. Nxc7 Rae8 32. b3 Bf4 $1 33. Nxe8 Rxe8 34. h4 Bxd6 35. h5 Rh8 36. Rh1 f4 37. h6 Bf5 38. Reg1 d2+ 39. Kb2 Be5+ 40. Ka3 Bc2 0-1
[Event "Bad Liebenzell"]
[Site "?"]
[Date "1939.??.??"]
[Round "?"]
[White "Diemer"]
[Black "?"]
[Result "1-0"]
[Annotator "45: Eagerness to win material"]
[ECO "D00"]
[PlyCount "29"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. d4 d5 2. e4 { The Blackmar-Diemer Gambit, enthusiastically embraced by Diemer } 2... dxe4 3. Nc3 Nf6 4. f3 exf3 5. Qxf3 Qxd4 { Black grabs everything offered } 6. Be3 Qe5 7. O-O-O $1 Bg4 $2 { This is refuted in sparkling style } 8. Qxb7 Qxe3+ 9. Rd2 Qe1+ 10. Nd1 Qxf1 11. Nf3 $3 { Most suprising. White presents his grasping opponent with yet another piece } 11... Qxh1 $2 ( 11... Qa6 { Prolonging the game } 12. Qxa8 Qb6 ) 12. Ne5 $1 Bf5 ( 12... -- 13. Nxg4 Nxg4 14. Qc8# ) 13. Nc6 $1 Bd7 14. Qc8+ $1 { removing the guard/blockade } 14... Bxc8 15. Rd8# 1-0
[Event "St Petersburg"]
[Site "St Petersburg"]
[Date "1914.??.??"]
[Round "?"]
[White "Alekhine"]
[Black "Marshall"]
[Result "1-0"]
[Annotator "47: Eagerness to Exchange Pieces"]
[ECO "C42"]
[PlyCount "110"]
[Source "Hays Publishing"]
[SourceDate "1964.01.01"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. c4 Bb4+ 8. Nbd2 Nxd2 { Natural, but inaccurate. Alekhine, in his excellent book, "My
Best Games of Chess 1908-1923, stated that 8. ... 0-0 was correct } ( 8... O-O 9. O-O Bxd2 $1 10. Bxd2 Bg4 { Black would have good play - Alekhine } ) 9. Bxd2 Qe7+ 10. Qe2 Qxe2+ { Black proceeds with his policy of
exchanges. According to Alekhine, the exchange of Queens is a decisive mistake. } ( 10... Bxd2+ 11. Kxd2 Qxe2+ 12. Bxe2 dxc4 13. Bxc4 O-O { keeping White's advantage within bounds } ) 11. Kxe2 Bxd2 12. Kxd2 $1 { The difference between this line and the one just now emereges. } 12... Be6 ( 12... dxc4 13. Rhe1+ $1 { White interpolates } ) 13. cxd5 Bxd5 14. Rhe1+ Kd8 15. Be4 $1 Bxe4 ( 15... c6 16. Bxd5 cxd5 17. Re5 $18 ) 16. Rxe4 Re8 17. Rae1 Rxe4 18. Rxe4 Nc6 { Black is out ot exchange nearly all the pieces as
fast as possible, and if he only had time for ... Kd7 and ... Re8 this plan
would have succeeded completely.  All these exchanges have left White with a
lead in development. True, there is not much material left, but it is enough
to keep White in control } 19. Rg4 $1 ( 19. -- Kd7 20. -- Re8 ) ( 19. Ng5 Kd7 $1 20. Nxh7 Rh8 ) 19... g6 20. Rh4 Ke7 ( 20... h5 21. g4 $1 Kd7 22. gxh5 ) 21. Rxh7 Rd8 22. Rh4 Rd5 23. Re4+ Kf8 ( 23... Kf6 24. Kc3 -- 25. Re8 ) 24. Kc3 Rf5 25. Re2 a6 26. a3 Ne7 { In order to occupy d5 with the
Knight - a stratagem already known to us in the play against an isolated pawn } 27. Re5 $1 Rf6 ( 27... Rxe5 28. dxe5 { Black has no compensation for his pawn } ) 28. Kd3 b6 29. Re2 $1 Nd5 30. Ke4 Nf4 ( 30... Re6+ 31. Ne5 Nf6+ 32. Kf3 { leads to nothing } ) 31. Rc2 Nxg2 { threatening to win a piece } 32. Ne5 $1 ( 32. -- Rf4+ { White can't take the c-pawn } ) 32... Ke8 { Now Black in his turn cannot
protect the c-pawn because of the threatened Nd7+ } 33. Rxc7 Rxf2 34. Nc4 $1 b5 35. Nd6+ Kf8 36. d5 f6 37. Nb7 $1 { Preparing the decisive advance of the d-pawn } 37... Nf4 38. b4 g5 39. d6 Ne6 40. Kd5 $1 Nf4+ ( 40... Nxc7+ 41. dxc7 Rc2 42. Nc5 $18 ) ( 40... Re2 41. Kc6 Nd4+ 42. Kb6 ) 41. Kc6 Rxh2 42. Nc5 $1 { This prevents the enemy Knight from
opposing the advance of the d-pawn. The rest presents no difficulty } 42... Rd2 43. Rc8+ Kf7 44. d7 Ne6 45. Nxe6 Kxe6 46. d8=Q Rxd8 47. Rxd8 g4 48. Re8+ Kf7 49. Re2 f5 50. Kd5 Kf6 51. Kd4 f4 52. Ke4 Kg5 53. Rc2 f3 54. Rd2 Kh4 55. Kf4 Kh3 1-0