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This dubious-looking move needs a special explanation.

During the twelve hours of working time between the end of the first session of the game and its resumption, I, together with my team (the members of which were Raymond Keene, Michael Stean and Yakov Murey), failed to find a win for White. Moreover, we came to the conclusion that the position is objectively drawn. Naturally, I believed that Karpov, together with his selected trainers Tal, Balashov, Zaitsev and Vasyukov, had analysed the position not worse than me, and perhaps even better...

The score in the match was 5-4 to Karpov (who was Black in this position). To win this game! - this wish was so strong! The only thing I could try was to take the game away from the path of home analysis, to muddle Karpov, to force him to work and to deal with complicated tasks on his own. And the move of the king to c3 (really dubious!) was made for this purpose!

But which moves were objectively stronger? The answer is: 49 2a2 and 49 2e6. How would the game have proceeded in these cases?

In my home analysis I managed to find a draw for Black in the following variation:

49... 2g3+ 50 ^e4 2xh3 51 a6 2h4+ 52 ^d3 2h3+ 53 ^d2 2h2+ 54 ^c3 2h3+ 55 ^b4 bxa6 56 2xa6 2d3 57 2xc6 2xd4+ 58 ^xb5 2d5 59 2c7+ ^e8 60 ^b6 2xf5 61 c6 2fl 62 2b7 2bl+63 ^a7 2cl 64 c7

a b c d e f g h

Black unavoidably loses his rook, but the struggle in not yet over.

64...^?d7! 65 ^b8 ^>e6 66 c8W+ 2xc8+ 67 ^xc8 f5! If Black had only his f-pawn, then 68 2 b5 would win, but here the h-pawn saves him.

For inquisitive minds, we will point out another interesting attempt by White to play for a win: 51 d5!? b4! O 52 a6 © 2h4+ 53 ^d3 © bxa6 54 d6 © b3 55 2xa6b2 56 2b6 2h2 57 2b8 2f2 58 d7bl#+59 2xbl ^e7.

© After 51...2h4+?! 52 <&B cxd5? 53 c6 bxc6 54 a6 Black loses on the spot. By the energetic move 51...b4 he solves all his problems.

© 52 dxc6 b3! 53 2d2 bxc6. Black exchanges his b-pawn for the passed pawn on the a-file, after which a draw is easily achieved. Or 52 d6 2a3 53 ie2 &e8 54 ^d4+ &d8 55 2e7 2xa5

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56 Hxb7 2b5.

© 53 ^e3 bxa6 54 dxc6 Hc4 55 2xa6 56 Ha5 b3 57 Hb5 b2 with a draw.

© 54 dxc6 ^e7 55 Hxa6 ^d8 56 c7+ ^xc7 57 2xf6 b3 58 ^c3 b2 59 4>xb2 S c4 again with a draw.

A strong doubt has never left me throughout all these many years: after 49 Ha2 was Karpov really going to play the variation, where two black pawns against the rook make a draw? The saving line for Black looks so magical! Were White able to gain a single tempo along the way, Black's counterplay would be insufficient... The analysis of the Karpov team from the former Soviet Union has never been published. This rook ending - one of the most complicated in my life, and very likely, in the entire history and practice of chess! - has remained a matter of interest for me, and from time to time I have returned to it. There are many tempting possibilities at Black's disposal. The idea is always to set up counterplay against the white c and d pawn pair, using the passed pawns on the b- and h-flles. But for fifteen years in none of the following sharp variations could I find a way for Black to save the position. After the introductory moves 49 2a2 22g3+ 50 <4>e4 Hxh3 51 a6 Hh4+ 52 ^d3 2h3+ 53 ^d2 bxa6 54 Exa6 the starting position in the following diagram is reached.

a b c d e f g h

54...b4 55 flxc6 b3 56 Hd6! O Sh2+ © 57 4?c3 b2 58 flb6 flf2 59 Sb7+ 4>e8 60 c6 &d8 61 d5 2xf5 62 4>d4 © fi£2 63 d6 Hd2+ 64 <tc5 ^c8 65 J5g7 #b8 66 c7+ ^?b7 67 Hg8 and White wins.

© 56 d5 b2 57 Sb6? fihl! 58 c6 ^e7 59 c7 «¿>d7 60 Hc6 ^c8 61 d6 ldl+ and Black wins; 57 -¿>c2 Sb3 58 -¿>bl Hb5! with a draw (Diagram 65).

a b c d e f g h

This position is also drawn without the h-pawn.

56 2h2 57 2b6 2c2+ 58 ^bl 2c4 59 2d6 h5 60 &b2 h4 61 ^xb3 h3 62 2d7+ <4>g8 with a draw.

56 2b6 2f3! 57 2b7+ <&e8 58 c6 &d8 59 d5 flxf5 60 Id7+ <i>c8 61 ^c3 2f3+ 62 4?c4b2 63 flb7 2f2 64 d6 5c2+ 65 ^d5 2d2+ 66 <4>e6 2e2+ 67 <A>f7 2d2 with a draw, as after d6-d7+ Black always has the reply ... 2xd7.

a b c d e f g h

The f6 and h6 pawns do not play any role in the assessment of the position -draw.

@ 56...b2 57 <4>c2 2b3 58 sfebl h5 59 c6 &e7 60 2d7+ <^e8 61 d5, and Black is unable to combat White's passed pawns; 56... <4>e7 57 2e6+ <4>d7 58 Sxf6 h5 59 c6+ &c7 60 d5 b2 61 &c2 2b3 62 <d?bl h4 63 2f7+ &d6 64 2d7+ ^e5 65 c7 2c3

66 4)xb2 2c5 67 f6 h3 68 f7, or 67...£>xf6 68 2 d6+ £>e7 69 2c6.

57...^n 58 c6 2£3 59 c7 2f2+ 60 2e2 2xe2+ 61 &xe2 b2 62 c8W bl^ 63 ^§re6+ and White wins the queen ending; 58...2h2+ 59 '¿?cl h5 60 d5 h4 61 d6 lc2+ 62 &bl Sxc6

63 d7 2xe6 64 d8# and wins; 59... 2c2+ 60 <4>bl 2d2 61 2d6 <4>e7 62 2d7+ ^>e8 63 d5 2c2 64 2h7 #d8 65 2xh6 2c5 66 2h8+ <&c7

67 2h7+ ^?c8 68 2 d7 2c2 69 2f7 2d2 70 2xf6 2xd5 71 2f8+ <&c7 72 f6 and then f6-f7, winning the rook.

© It should be said that White can also win easily by 62 2d7+ ®c8 63 «¿>xb2.

The other possibility for Black is to activate his h-pawn (see Diagram 64).

57 2xb5 h3 © 58 c6 © h2 © 59 2b7+ <4>e8 60 2h7 ^d8 61 2xh2 2xf5 62 #d3 @ ^c7 63 <4>e4 2g5 ©

64 2c2 2g4+ 65 <4>d5 2g5+ 66 <4>e6 2h5 67 ^>xf6 2d5 68 2c4 2h5. An analysis of this position also needs a diagram © (see Diagram 73).

O 56 d5 2f3 57 d6 <4>e8 (57...2xf5 is premature in view of 58 2c7+ \i?e8 59 ^?e3! h3 60 ^d4 2h5 61 c6 h2 62 2e7+ <4>f8 63 2el and White wins)

58 2c7 59 &e2 2xf5 (59...2c3 leads to an easy draw - without the support of their king, the white pawns cannot advance) 60 <4>e3 h3 61 i,d4 2h5 62 c6 2h4+ (if 62...h2 63 2 g7

MMMMH

2d5+ 64 4?xd5 hlH+ 65 ^c5 66 2a7 and White wins) 63 (Diagram 67).

m h2

This position looks like the fruit of fantasy of a study composer. The first impression is that White is losing. If 64 2 g7 there follows 64... 2 c4+ 65 ^xb5 2xc6 66 4)xc6 hl#+. Checks do not help White - the king moves to f8 and Black wins. White saves the game by 64 ^b6! h\W 65 2g7. Now Black has an easy draw: 65...#xc6+! 66 4)xc6 2c4+. Attempts to play for a win are counter-productive: 65...#d5? 66 c7+ 4>c8 67 d7+! Or 65...^e8 66 d7+ <&f8

67 2g4! A very important move. Now the black rook is unable to restrain the passed pawns. 67...2xg4 68 d8#+ followed by #d7+ and #xg4 with a won queen ending. Or 67...#d5

68 2 xh4 4)g7 69 2 e4 with roughly the same result. Finally, after 67...^e7

White has a draw by 68 2 g7+, but he can also play on without risk: 68 c7!? i>xd7 69 2g7+ <id6 70 c8H, starting a dangerous mating attack.

It should be pointed out that, in the event of 59 c6 (instead of 59 <4>e2), taking the f5 pawn looks even more dangerous for Black, in view of the manoeuvre <4>e3-e4-f5-e6, but 59...2f4! leads to a clear draw (60 ^e3 2c4!).

© 56...2a3? 57 2b7+ ^e8 58 c6 ^d8 59 d5 2a6 60 ^c3! h3 61 ^b4 h2 62 2h7 and wins.

The only move. If 57 ^d3 h3 58 2xb5 2hl 59 2b2 h2 60 2d2 4>e7 and White cannot strengthen his position. But here, if Black sticks to the same line of defence, the white king goes to d5 and White wins. With regard to the above explanation, 57 we3 was also possible. Then 57...h3 58 2xb5 2hl would not save Black because of the same manoeuvre 2b2-e2. But after 57 ^e3 h3 58 2xb5 Black could apply another defence: 58...2g2! 59 2b7+ ^g8! 60 c6 h2 61 c7 2c2, or 61 Sbl 4>f7 62 c7 2c2 63 2hi 2xc7

64 2 xh2 2 c 1, when he faces a difficult struggle to draw.

57...h3 58 2xb5 Hg2 59 2b7+ 4>g8 60 c6 Sgl 61 2b2! 2cl+ 62 2c2 2xc2+ 63 ^xc2 h2 64 c7 hlW

65 c8#+ ^g7 66 #d7+ ^h6 67 d5 with good winning chances for White -his king can hide from checks on Black's kingside.

a b c d e f g h

Another crafty attempt by Black. But this try will also be refuted: 58 c6! 2 f2+ 59 ^d3 ^e7 60 d5 2fl (60...<&d6 61 2c5) 61 2b7+ ^d6 62 2d7+ 4>e5

63 c7 Bel.

a b c d e f g h

64 ^d2! White's primary task is to stop the h-pawn with his king. 64...2c4

65 ^e2 h3 66 &£2 2c2+ 67 ^gl ^f4 68 d6 h2+ 69 ^hl ^g3 70 2g7+ 4>h3 71 2 gl! The only way, if a rather crude one, of crossing Black's plan. 71... hxgl#+ 72 ^xgl ^g3 73 <&fl <¿>£3 74 <&el f5 (best) 75 d7 2xc7 76 d8# 2h7. To win, White has only some slight technical difficulties to overcome.

© 58 2b7+ ^e8 59 2h7 ^d8 60 ^e2 2c3 61 2h6 h2 62 <¿>£2 2d3 63 2 h4 st?c7 64 2d2+ 65 ^c6 with a draw.

© Or 58...^?e7 59 2d5 h2 60 2d7+ ^e8 61 2h7 with the same position.

© After 63...2a5 64 d5 ^d6 65 2d2 and then, say 65...2a8 66 <¿>£5 2e8

67 ixfS, a position arises where the white king is cut off from its pawns, and the white rook is tied to the defence of the d5 pawn. If the king can manage to return to the queenside, or if the rook can change its location to f5, White will win. The following is a critical position:

a b c d e f g h

White plays 1 2c3! 2e8 2 2e3! 2h8 3 2 e5! Now 3... 2 h4+ does not work because of 4 ^g5, with a won position. From the above explanation it will now be clear that the next position (Diagram 72) is drawn: White can neither reach the pawns with his king, nor place his rook more actively.

a b c d e f g h

© Black tries to prevent his opponent from consolidating his pawns by d4-d5, but, as will soon be clear, this does not work.

a b c d e f g h

69 &e6 Sh6+ 70 <Ä>e5 Hh5+ 71 <4>e4 2h4+ 72 &f5! Ih5+ 73 &g4 2d5 74 &f4 flh5 75 Scl! Hh4+ 76 ^e3 lh3+ 77 Sh2+ 78 <&g3 lh5 79 ¿»ß! Zugzwang! 79... Äh3+ 80 <4>g4

2d3 81 2c4 2dl 82 <S?f5, or 79...2g5 80 <^e4 2g4+ 81 <te5 2g5+ 82 <te6 2g6+ 83 d;f5 and White advances his pawn to d5.

Consequently, the variation that ended in Diagram 63 was the only one where Black could achieve a draw.

(cf. Diagram 57, after 47 f5 gxf5 48 gxf5 2g8)

This move is perhaps a little weaker than 49 2 a2, but here too Black has to defend resourcefully. He has two possibilities, 49... 2 g3+ and 49... 2 a8, which we will consider in turn.

49...Sg3+ 50 <3?e4 O 2xh3 © 51 a6 © 2h4+ 52 ^e3 2h3+ 53 &f4 bxa6 54 Sxc6 a5 © 55 <¿>64 © 2c3 © 56 ifc>d5 b4 © 57 2a6 h5 58 2xa5 b3 © 59 2a7+^f8!©60 4'e6©h4 61 4?xf6 ^>e8 62 d5 h3 63 c6 <&d8 64 9?e6 b2! © White has nothing better than to give perpetual check with his rook at a7 and a8.

© 50 id2?! 2a3 51 d5 cxd5 52 2b6 2xa5 53 2xb7+ ^e8 54 2b6 b4, or 54 «¿>d3 2a4, or 54 c6 <4>d8 55 2f7 b4 56 2xf6 2c5 57 2e6 b3 58 f6 2c2+ 59 2f2, or, finally, 55 2d7+ &c8 56 2d6 b4 57 2xf6 <ic7 58 2xh6 d4 59 f6 2f5 - everywhere Black gains a draw without difficulty.

© 50...M? 51 d5 b3 52 d6 b5 53 &d4, or 51 a6! bxa6 52 2xc6 a5 53 2a6, in both cases with a big advantage for

White.

50...2a3?! 51 d5 2a4+52 <4>d3 2a3+ 53 ^d4 Ia4+ 54 <4>c3 2c4+ 55 <S?b3 2xc5 56 dxc6 bxc6

a b c d e f g h

57 a6 2c4 58 Se2 c5! 59 2a2 2b4+ 60 &c2 2c4+ 61 s4?b2 2b4+ 62 2e4 63 2a5! 2e8 64 2xb5 <4>e7 65 2b6! and Black will not survive;

54...cxd5 55 2b6 &e7 56 2xb7+ <i>d8 57 ^d3 2xa5 58 si?d4, and Black will fail to hold the position;

54...2xa5 55 d6 2a4 56 ^b3 2d4 57 h4 h5 58 2e7+ <&f8 59 2h7 &e8 60 2xh5 2c4 61 2h8+ #d7 62 h5, and the h-pawn will soon be promoted;

59...2d3+ 60 4?b4 2d4+ 61 <^a5 b4 62 <4>a4 - Black is in complete zug-zwang, and his position will soon collapse.

© 51 d5 2h4+ 52 <^d3 2a4 (52... 2h3+? 53 2e3 and White wins the pawn ending by one tempo after 53... Hxe3+ 54 ^xe3 ^e7 55 dxc6 ^d8

56 cxb7 &c7 57 a6 etc.) 53 dxc6 bxc6 54 2xc6 2xa5 55 <i)d4. Black's position looks difficult, but he can still manage to draw. The main line is 55... Hal 56 ^d5 b4 57 Hb6 ffbl 58 ^d6 (58 c6 ^e7) 58...b3 59 c6 b2 60 ^c7 ^e7 61 ^b7 (61 Hb7 &e8!) 61...2.cl 62 Hxb2 ^d6 63 Hd2+ ^e5 64 c7 ^xf5 and the f-pawn saves Black, or 61 Hb3 h5 62 He3+ &f7 63 He2 Sfl 64 Hxb2 Hxf5 and Black's passed pawns help to equalise the chances.

0 The intermediate check 54... 2Ih4+ 55 a5 would merely help White to coordinate the action of his king with his passed pawns, so in this case he would win rather easily, for example 56 2b6 b4 57 Hb7+ ^?e8 58 c6 ^d8 59 ^d3! a4 60 d5! Hhl 61 ^c4 Hcl+ 62 ^b5 b3 63 d6, or 58...2h3+ 59 <i?e4 fic3

60 ^d5 h5 61 ^d6 h4 62 c7 h3 63 Hb8+ &f7 64 2h8 Hxc7! (64...b3

65 Hxh3 Sxc7 66 Hh7+! ^g8 67 Hxc7 with an easy win) 65 <i)xc7 b3

66 Hh7+ ^g8 67 Hxh3 a4 68 d5 b2 69 Ihl a3 70 d6 a2 71 d7 and White gives mate.

© If 55 2b6 b4 56 <4>e4 Black achieves a draw in the following way: 56...b3

57 c6 a4 58 d5 2c3! 59 ^d4 (59 d6? 2xc6 60 2xc6 b2 and it is Black who wins) 59...Hcl 60 d6 a3! (60...ffdl+?

a3 62 d7 and White wins) 61 fib7+ ^e8 62 d7+ ^e7 63 Hb8 Hdl + 64 ^e3 a2 65 c7 Sel+ 66 <¿>£3 2fl+ 67 <4>g4 h5+!, and since the white king cannot hide from the checks on the kingside, and is also unable to cross the c-file (then the d7 pawn will be lost), the position is drawn.

© Black is in a peculiar zugzwang: .. .b5-b4 will be met by 5 a6, and in the event of ...a5-a4 there follows Hb6. Meanwhile, the black rook is best placed on the c-file.

© 56...h5?! is too slow. White wins by pressing the black king to the edge of the board: 57 1x7+ ^g8 58 ^e6! h4 59 ^xf6h3 60 Hg7+ ^f8

a b c d e f g h

61 d5! Other moves may also win, but this is the most energetic. 61...fixc5 (61...b4 62 d6 b3 63 d7 fld3 64 2e7)

62 2a7 Hc8 63 2 h7 ^g8 64 2xh3 2d8 65 ^g6 Hxd5 66 f6 2d6 67 2c3

Hd8 68 2c7 followed by 2lg7+ and 2h7, winning.

If the black king goes into the corner, the following can happen: 60...^hS 61 Hg4! ^h7 62d5! Sxc5 63 d6 Hd5 64 ^e6 Hd2 65 d7 h2 66 Hh4+ ^g7 67 f6+ ^g6 68 f7 ^g7 69 Sxh2, or 68...Se2+ 69 ^d6 Sd2+ 70 ^e7 Se2+71 &f8 Hd2 72 &g8.

© One of White's ideas is to place his rook at b2, where it hinders the advance of the black pawns (see comment ©). Because of this the move ...b4-b3 is best.

abcdefgh

60 Sal! A rather unusual manoeuvre. In view of the menacing black passed pawns, White temporarily moves his rook to a passive position - to the second rank.

63 <i>d6! 2c4 64 d5 Sh4 65 Sxb3 h2 66 fibl hlW 67 ffxhl Hxhl 68 &d7! and the white pawns are irrepressible; or 63...<&e8 64 c6 3?d8 65 d5 2e3 (65...&C8 66 Se2 <S?d8 67 2e4)

66 Sbl h2 67 Sal £>e8 68 c7 Sc3 69 flel+ 4?fJ 70 «¿>d7; finally, 66... Sc3! is somewhat more tenacious for Black: 67 lal &e8 68 c7 b2 69 fiel+ "¿>f7 70 2bl h2 71 <4d7 lei 72 c8# hlW 73 WeS+ <i?g7 74 Wg6+ 3?h8 75 #xf6+ "¿?g8 76 #e6+ &h8 (76... <¿>£8 77 f6!) 77 #e5+ <i?g8 78 Sxb2 #h7+ 79 3?d8 #h4+ 80 f6 fiel 81 2g2+.

In the event of 59...^e8 White wins a decisive tempo by 60 A e6, easily breaking Black's resistance.

© A rook manoeuvre, analogous to the one in the previous comment, does not work here, due to the closeness of the black king, e.g. 60 Sal h4 61 Sbl h3 62 2b2 Sd3! 63 c6 tf?e7 64 2e2+ &d8 65 &c5 flc3+ 66 &d6 Sc2

67 fle3 b2 68 Sb3 Hxc6+ 69 <&>xc6 h2, and it is Black who wins!

® 64...h2? loses to 65 d6 2xc6 66 Sh7 <i?c8 67 2xh2. But after 64... b2! 65 d6?! 2xc6 or 65 ^d6 <4e8 only White has problems.

Now we will analyse Black's other possibility.

(cf. Diagram 57, after 47 f5 gxf5 48 gxf5 2g8 49 5e6)

2xa5 © 52 Se6+ <4d7 © 53 2xf6 © b4 54 «¿>c4 ® b3 55 2f7+ 3?c8

56 ^>xb3 cxd5! © 57 f6 Sal © 58 2e7 © <4d8 59 «¿>c3 Sfl 60 Sxb7 Sxf6 61 <i?d4 Sf3 62 £>xd5 2xh3 63 &c6 •¿>c8! and the black king reaches the a-file with a theoretical draw.

53 d7 2d8 54 flxc6 Sxd7+ 55 2e7+ 56 ^d4 (56 <4»d5 Sd7+

57 Ed6? and Black wins) 56... 2d7+ 57 «¿>c3 a5 58 Eb6 Ed5 with a draw;

52 d7 Sd8 53 Ed6 <i?e7 54 a6 bxa6 55 2xc6 Sxd7+ 56 ^e4 a5 57 2e6+ £>f7 58 Sa6 a4 59 c6 Sd2! 60 2a8 flc2 61 b4 62 Sxa4 b3 63 2b4 b2 64 ri>d6 <i>e8 and Black holds the position, or 58 Sb6 a4 59 Exb5 2a7

61 <A>d6 Sa7 62 c7 a2, or finally 61 2a6 b4 62 <i?d6 Sel 63 c7 Edl+ 64 <4c6 2cl+ 65 <4>b7 b3! and White must force a draw by 66 5 c6!

© In the event of 50...2xa5 51 Hd7+ <4>e8 52 2xb7 2a3+ 53 <&e4 lxh3

54 2c7 Sh4+ 55 &e3 2h3+ 56 3?d2 Sf3 57 2xc6 2xf5 58 ¿>e3 Black has a difficult position.

© Of course, 51...cxd5 is wrong -52 Hb6 Sxa5 53 Sxb7+ <4d8 54 A d4 with a won position for White.

© 52...-¿»n 53 d6 leads to a lost position for Black, which has already been examined in the note to 49...2g3+, paragraph 2.

© 53 d6 does not promise anything good for White - 53...b4 54 2e7+ <4d8 55 &c4 2b5 56 Se3 ^d7 57 2b3 b6!

© Weak is 54 2f7+ «¿>e8 with an immediate draw. After 54 2 d6+ Black, apart from moving his king to the e-file, can also play 54...4>c7 55 f6 b3 56 f7 b2 57 &c2 Sal! 58 ^>xb2 2fl

59 dxc6 (59 2xh6 cxd5 60 2 h7 $>c6 61 h4 <i?xc5 62 h5 <4d6 63 h6 ^e6! and the f-pawn will be lost) 59...bxc6

60 2xh6 2xf7 61 ^c3 <4b7 followed by ...2fl and an eventual ...&a6 -Black makes a draw.

57 d6 <i?d8 58 f6 2f5 59 3>c4 b6 60 h4! h5 61 ¿>d4 2d5+ 62 &e4 2xd6 63 Hf8+ <4>d7 64 £>£5 2dl (if the white pawn were at h3 and the black pawn at h6, Black would gain an important tempo for the defence by 64... 2 d5+

66 ^g6 2gl+ 67 ^h7 Sel 68 ^g7 2gl + 69 <&f8 Shi 70 f7 2xh4 71 ^g7 and White wins.

There is a similar finish after 57...2d5 58 2c7+ <^b8 59 f6 2xd6 60 f7 2f6 61 2d7 ^a7 62 <i?c4 <i?a6 63 ^d4 -as soon as his king reaches e6, White wins the rook and the game.

The assessment of Diagram 77 depends on whether Black can save the position in Diagram 78, which can arise from the last variation after 60...<i>xc7 61 fSW.

Black cannot win the last white pawn -after 61...2d3+ 62 ^b4! 2xh3 63 #f4+ 64 Wd4+ ^c7 (64...^a6 65 #al+) 65 #e5+ White wins the rook. Black has the problem of having to defend against threats on both sides of the board. Without the c-pawn he would place his rook on c6 and his position would become impregnable. But here, after 61...c5 62 #e7+ ^c6 63 h4, Black will soon be forced to advance his pawns further and will lose any chance of building a fortress...

© If 57...Sxc5, then after 58 2h7 it will be impossible to stop the f-pawn. And after 57...2b5+ 58 <&>c3 2xc5+ 59 <4)d4 2cl 60 He7! ^d8 61 ^xd5 b5 62 <¿^6 this pawn, supported by the king, again ensures a win for White.

©58 2h7 2fl 59 2xh6 <^c7 60h4b6 61 cxb6+ ^xb6 62 h5 <&c6 and by one tempo Black arrives at the kingside in time.

Or 59 f7 ^d8 60 <&c3 ^e7 61 f8#+ <^>xf8 62 2xb7 2f4 with a draw. The variation 61 ^d4 also leads only to a draw: 61...2xf7 62 2xh6 2f5 63 h4 64 h5 ^c7 65 <^e3 2e5+ 66 &f4 2e4+ 67 ^g5 2c4 68 Hh7+ ^c6 69 2h8 d4 70 h6 2xc5+ 71 ^g6 <^b5. If here 68 Hf6, then 68...2xc5 69 h6 d4+ 70 si?g6 2cl 71 h7 2gl+ 72 &f7 2 hi 73 ^g7 d3 and Black achieves a draw.

After 58 2h7 2fl 59 f7 ^d8 White can try 60 &a4!?, with the idea of 60...<¿^7 61 f8#+ ^xf8 62 2xb7, and the c-pawn, supported by the king, will give him good chances of playing for a win. But with 60...d4! the opponent spoils his good intentions.

White has one more try: 58 2fl

59 <i)d4 B £5. If in this position it were Black to move, White would win (with the king on b8, c5-c6 is very strong). However, White is not able to give Black the move...

(cf. Diagram 57, after 47 £5 gxf5 48 gxf5 Hg8 49 ^c3)

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