[Event "VII ol cr"]
[Site "?"]
[Date "1984.??.??"]
[Round "?"]
[White "Hollis, Adrian"]
[Black "Florian, Tibor"]
[Result "1/2-1/2"]
[Annotator "Poghosyan, Vardan "]
[SetUp "1"]
[FEN "8/1R3pk1/1P4p1/7p/7P/1r4P1/5PK1/8 w - - 0 40"]
[PlyCount "24"]
[EventDate "1984.??.??"]
[WhiteTeam "27.11.2011, 1.12.11, 3.12.2011"]
[BlackTeam "Short version of the New main file "]

{The endgame theory assumed very long time that the position after} 40. Kf1 Rb2
41. Ke1 Kf6 42. f3 Rb3 43. Kd2 {Diagram {2} is drawn because of 43...Rxf3 or
43...Ke6. Yanvarev and Micawber have recently independently convincingly
proved that 43.. .Rxf3 loses. Their conclusion has been endorsed by such a
great endgame authority as Karsten Muller. GM Muller wrote in his Endgame
Corner 119 that "only Kantorovich's ingenious defensive method 43...Ke6!! 44.
Kc2 Rb5 45.Kc3 Rb1 draws as Mark Dvoretsky has shown in his excellent Endgame
Manual".     Since Kantorovich did not provide any analysis for his defensive
method and was not even sure that his plan is sufficient for draw, it was
Dvoretsky who analysed the position extensively and came to the conclusion
that "Black can survive if he plays precisely" (DEM, 2. Edition, p. 207).
According to Dvoretsky the method of Kantorovich consists of building a
fortress. Black "king succeeds in two matters simultaneously: protection of
the f7-pawn and prevention of an invasion by his counterpart" (DEM, p. 207).  
According to my analysis     1) Black indeed survives with 43...Ke6 although
not in accordance with the Kantorovich's purely passive defensive method and
not in the way demonstrated by Dvoretsky.   2) It is much easier for Black to
reach draw with immediate 43...Ke5.} Ke6 ({Let`s go back and examine 43...Ke5
instead of 43...Ke6.} 43... Ke5 {Diagram {17} Black`s king moves to the centre
(Ke5-Kd5) and prevents advancing of the White king to c4. We have already seen
in previous variations the strength of the position of the Black king in the
centre. This is an active defence as compared to the Kantorovich method and
Black takes no risk leaving the f7-pawn unprotected.} 44. Kc2 (44. Rb8 Kd5 (
44... Kd6) 45. b7 (45. Kc2 Rb5 46. Kc3 Rb1 {Transposition to themove 46...Kd5!}
) 45... Kc6 46. Ke2 (46. Kc2 Rxf3 $11) (46. f4 Rxg3 $11) 46... Rb5 (46... Rxb7
$2 47. Rxb7 Kxb7 48. g4) (46... Kc7 $2 47. Rf8 Kxb7 48. Rxf7+ Kc8 49. Rf6 $18)
47. Ke3 Re5+ {Transposition} 48. Kd4 Rf5 49. Ke4 Kc7 $11) (44. f4+ Kd5 45. Kc2
Rb4 46. Kc3 Rc4+ 47. Kb3 Rc1 48. Rb8 Rg1 49. b7 Rxg3+ 50. Kc2 Kc6 $11) (44. g4
Rxf3 45. Rc7 Rb3 46. gxh5 gxh5 47. b7 Kd6 48. Rxf7 Kc6 49. Rh7 Rxb7 50. Rxh5
Kd6 $11) 44... Rb5 45. g4 (45. Kc3 Kd5 {Transposition to the line 45...Kd5
instead of 45...Rb1.}) (45. Kd3 Kd5 46. Ke3 Rb4 47. Rb8 Kc6 48. Rf8 Rxb6 49.
Rxf7 Kd5 50. Kf4 Ke6 51. Rc7 Kf6 $11) 45... hxg4 46. fxg4 Kd5 ({Not} 46... f5
$2 47. h5 gxh5 48. gxh5 f4 49. h6 Rc5+ 50. Kd3 Rc8 51. h7 Rh8 52. Rc7 Kd6 53.
Ke4 Rf8 54. Rg7 f3 55. Rg8) 47. Kc3 (47. h5 gxh5 48. gxh5 Kc6 49. Rxf7 Rxh5) (
47. Kd3 {Transposition} Rb3+ {Transposition} (47... f5 {Transposition} 48. g5 {
Transposition} (48. gxf5 {Transposition} gxf5 49. h5 Kc6 50. Rh7 Kxb6) 48...
Rb3+ (48... Kc5 49. Rb8 Rb3+ 50. Kc2 Rh3 51. Rg8 Kxb6 52. Rxg6+ Kc5 53. Rh6 Kd5
54. g6 Ke6 55. h5 Kf6 56. Rh7 {sp. karces haghtum en 29. 11.2011 Tiflis}) 49.
Kc2 Rb4 50. Rd7+ (50. Rb8 Rxh4 51. Rg8 Rc4+ {karces voch voqi e 29.11.2011}) (
50. h5 gxh5 51. g6 Kc6 52. g7 Rg4 $11) 50... Kc6 51. Rg7 Rxh4 52. Rxg6+ Kb7 53.
Rf6 (53. Kd3 Rg4) 53... Rg4 54. g6 Rg3 55. Kd2 f4 56. Ke2 Re3+ 57. Kf2 Rg3))
47... Rb1 {Diagram {8} Transposition to the main line after 47...Rb1.} (47...
f5 $2 {Diagram {18} Transposition} 48. g5 $1 (48. gxf5 $2 gxf5 49. h5 Kc6 50.
Rh7 Kxb6 $11) 48... f4 (48... Kc5 49. Rb8 Rb1 (49... Ra5 50. Rg8 $18) 50. b7
Kc6 51. Rg8 Kxb7 52. Rxg6 Rh1 53. Rh6 Kc7 54. Kd4 Kd7 55. h5 Ke7 56. Ke5 Re1+
57. Kxf5 $18) (48... Rb1 49. Rd7+ Kc5 50. b7 f4 51. h5 f3 52. Rf7 f2 53. h6
Rxb7 54. Rxf2 $18) 49. Rb8 f3 50. Kd2 Rb4 (50... Rb2+ 51. Ke1 Re2+ 52. Kf1 Kc6
53. Rg8 Re6 54. Rf8 Re4 55. Rf6+ Kb7 56. Rxg6 Rxh4 57. Kf2 Rf4 58. Rf6 $18) 51.
Ke3 (51. h5 Rb2+ 52. Kc3 f2 53. Rf8 Rxb6 54. h6 Ra6 55. Rxf2 Ke5 56. Kb4 Rd6
57. Rf3 Ra6 58. Rf8 Ra7 59. Rf6) 51... Rxh4 52. b7 Kc6 53. Kxf3 Rb4 (53... Rh1
54. Rg8 $18) 54. Rg8 $18)) 44. Kc2 Rb5 45. Kc3 {Diagram {3}  The main line of
Kantorovich and Dvoretsky is 45...Rb1, but with 45...Kd5 draw is much more
simple.} Rb1 {Diagram {4} After 45.. .Rb1 Dvoretsky considers 46.g4, 46. Rb8
and 46. Kc4. While his demonstration of draw in the line 46.Kc4 is convincing,
there are serious mistakes in the variations 46.g4 and 46.Rb8.} (45... Kd5 {
Diagram {16} Black king prevents the advance of his counterpart and is ready
at the same time to attack the b-pawn.} 46. Rxf7 (46. Rd7+ Ke6 $11) (46. g4
hxg4 47. fxg4 Rb1 $11 {Transposition to the line 43...Ke5 (instead of 43...Ke6)
44.Kc2 Rb5 45.g4 hg4 46.fg4 Kd5 47.Kc3 Rb1, D. 8.}) (46. Rb8 Kc6 47. Kd4 Rb3
48. Ke4 Rb4+ 49. Ke5 Rb5+ 50. Kf6 Rf5+ 51. Kg7 Rxf3 52. b7 Rxg3 53. Kxf7 Rg4
$11) (46. Kd3 Rb3+ 47. Ke2 Ke5 (47... Rb2+ {is also possible} 48. Ke3 Rb3+ 49.
Kf4 f6 (49... Ke6 50. Rb8 Kf6 {Transposition}) 50. g4 (50. Rg7 Rb4+ 51. Ke3
Rb3+ 52. Kf2 Rxb6 53. Rxg6 Rb2+ 54. Kf1 Ke6 55. Rh6 Rb5 56. Rh7 Rb1+ 57. Kf2
Rb2+ 58. Ke3 Rb3+ 59. Kd4 Rb4+ 60. Kc5 Rb3 61. Rxh5 Rxf3) 50... Rb4+ 51. Kg3
hxg4 52. fxg4 Rb3+ (52... Kc5 53. Rg7 g5 54. hxg5 fxg5 55. Rxg5+ Kxb6) 53. Kf2
Rb2+ 54. Ke3 Rb3+ 55. Kd2 Rb4 56. h5 gxh5 57. gxh5 Kc6 58. Rb8 Rh4 59. Rh8 Kxb6
) 48. Kd2 Kd5 49. Kc2 Rb5 50. Kc3 Rb1 $11 {As we have seen this position is
draw also with the White rook on b8.} 51. Rb8 Rf1) 46... Rxb6 47. Re7 {
Dvoretsky analyzes a similar position in 9. 179 with White King on c2.} Rf6 48.
Re3 Ra6 49. Kd3 Ra2 50. Re4 Rg2 51. Ke3 Rxg3 52. Kf2 Rg4 53. Rxg4 hxg4 54. fxg4
Ke4 55. Kg3 Ke5 56. Kf3 Kf6) ({WP} 45... Kd6 $2 46. Rxf7) 46. g4 ({Let`s try} 
46. Rb8 {instead of 46.g4.   According to Dvoretsky Black can now draw with 46.
..Kd6 and 46...Kd5!? in fact, 46.. .Kd6 loses and Black can survive only with
46...Kd5!} Kd6 $2 {Diagram {10}} (46... Kd5 $1 {Diagram {15} DEM considers
only 47. b7?! Kc6 48.Rc8+ Kxb7 49.Rf8 Rg1 50. Rxf7+ Kc8. White has now many
tries but Black seems to hold.} 47. Kd3 (47. g4 Rf1 (47... hxg4 48. fxg4 Kc6)
48. Kb4 (48. b7 Rxf3+ 49. Kc2 Kc6) 48... Kc6 $11) (47. b7 Kc6 48. Kd4 (48. Rc8+
Kxb7 49. Rf8 Rg1 50. Rxf7+ Kc8 $11 {Dvoretsky}) 48... Rg1 49. Rf8 Kxb7 50.
Rxf7+ Kc8 51. Ke4 Rxg3 52. Kf4 Rg1 53. Ke5 Rg3 54. Ke6 Rh3 55. Rf4 Rg3 56. Kf6
Kd7 $11) (47. f4 Rg1 48. Rf8 Rxg3+ 49. Kb4 Kc6 $11) (47. Rd8+ Ke6 48. Rb8 Kd5
$11) (47. Kc2 Rb4 (47... Rb5) 48. Rb7 Rc4+ 49. Kd3 Rb4 50. Ke3 Ke5 $11) 47...
Rb3+ 48. Ke2 Ke6 49. Kf2 (49. Kd2 Kd5 50. Kc2 Rb5 {Transposition}) 49... Kf6
50. g4 hxg4 51. fxg4 Kg7 52. Ke2 (52. g5 f5 53. gxf6+ Kxf6) 52... f5 53. Rb7+
Kh6 54. gxf5 (54. g5+ Kh5) 54... gxf5 55. Rb8 Kg7 56. h5 Rh3 57. Kd2 f4 $11)
47. Kc4 Rb2 48. Rb7 {Dvoretsky considers in the 2. edition only 48.f4!?, but
in the e-version of his manual he analysed also this move which wins.} Ke6 {
Diagram {11}} 49. g4 hxg4 (49... Rb1 {does not help.} 50. gxh5 gxh5 51. Rb8 Kd6
52. Rh8 Kc6 53. Rh6+ Kb7 54. f4 Rh1 55. Rxh5 Kxb6 56. Kd5 $18) 50. fxg4 {After
50.fxg4 Dvoretsky considered} f5 {which actually loses after} ({The best try
for Black is 50...Rb1 but  it does not save.} 50... Rb1 {Diagram {12}} 51. Rb8
(51. h5 $2 {Diagram {12a}} gxh5 52. gxh5 Rc1+ 53. Kd4 Rd1+ 54. Ke4 Re1+ 55. Kf4
Rf1+ 56. Kg3 Rg1+ 57. Kf2 Rh1 58. Rb8 Kd7 59. Rh8 Kc6 (59... Rb1 60. Rh6 Rb3
61. Ke2 Rh3 62. Kd2 Kc8 63. Kc2 Kb7 $11) 60. Kg2 Rb1 61. Rh6+ Kb7 62. Rf6 Rxb6
63. Rxf7+ Kc8 $11) 51... Kd6 (51... Rh1 52. Re8+ $18) (51... f5 52. b7 $18) (
51... Kd7 52. Kc5 Rc1+ 53. Kd5 Rd1+ 54. Ke5 Rf1 55. h5 gxh5 56. gxh5 Rh1 57.
Rh8 Rb1 58. Kf6 $18) (51... Rc1+ 52. Kb5 Rb1+ 53. Kc6 Rc1+ 54. Kb7 Rh1 55. h5
gxh5 56. gxh5 Rxh5 57. Kc6 $18) 52. h5 gxh5 53. gxh5 Rh1 54. Rh8 Kc6 55. Rh6+
Kb7 56. Kc5 Rc1+ 57. Kd5 Ra1 (57... Rd1+ 58. Ke5 Re1+ 59. Kf6 $18) 58. Ke5 Rb1
59. Kf6 Rxb6+ 60. Kg7 $18) 51. h5 gxh5 52. Kc3 $1 Rb1 53. Kc2 $1 {as shown
above}) (46. Kd4 {Diagram {14}} Rd1+ 47. Ke4 Rb1 48. Kf4 (48. Rb8 Rb4+ 49. Ke3
Ke5 {Transposition} 50. b7 (50. g4 hxg4 51. fxg4 Rb3+ {Transposition to the
line 48...Rb5 in D. 9 after 50...Rb3+}) (50. Kd3 Kd5 51. Kc3 Rb1 {
Transposition to D. 15.}) 50... Rb3+ 51. Kd2 Kf6 52. Kc2 Rb5 53. Kc3 Rb1) (48.
g4 Rb4+) 48... Kf6 49. g4 (49. Rb8 Rb4+ 50. Ke3 Ke5 {Transposition to the line
48.Rb8 (instead of 48.Kf4) after 49...Ke5.}) 49... hxg4 50. fxg4 Rb4+ 51. Kf3
Ke5 52. h5 (52. Rb8 Rb3+ 53. Ke2 Kd5 54. h5 gxh5 55. gxh5 Kc6 56. Rh8 Rh3 57.
Rh6+ Kb7 {Transposition to the line 48...Rb5 (instead of 48...f5) after 55...
Kb7.}) 52... Rb3+ 53. Ke2 gxh5 54. gxh5 Kf6 55. Rb8 Kg7 {Transposition to the
line 48.Kd3 D. 9, variation 48...Rb3+ after 51...Kf6 52.Rb8 Kg7.}) 46... hxg4
47. fxg4 {Diagram {5} This is a critical position for the whole variation and
evaluation of the defensive method of Kantorovich.     According to Dvoretsky
Black draws with 47...f5. But as we will see 47... f5 (Dvoretsky awards this
move an exclamation mark) loses. The only move to draw is the active 47...Kd5!}
Kd5 {Diagram {8}     Black`s only chance for draw consists in activating its
king. As we will see later, activating the king is crucial also in other
variations.} (47... f5 $2 48. h5 gxh5 {Diagram {6} Dvoretsky considers only 49.
gxh5? but after 49. Kc2! White wins.} 49. Kc2 $1 {Diagram {7}} Rb4 (49... Rb5
50. gxh5 f4 51. h6 Rh5 52. h7 $18) (49... Rh1 50. Rc7 Kd6 51. Rc8 $18) (49...
Rg1 50. Rg7 Kf6 51. Rg8 $18) 50. gxh5 Kd5 (50... Rh4 51. Rc7 Kd6 52. Rc8 Rb4
53. h6 Kd7 54. Rb8 Rh4 55. h7 $18) 51. Kc3 Rb1 (51... Rh4 52. Rd7+ Kc6 53. b7
Kxd7 54. b8=Q $18) (51... Rc4+ 52. Kb3 Rc8 53. Rd7+ Ke6 54. b7 Rb8 55. Rg7 f4
56. Kc3 Kf5 57. Kd3 Re8 58. h6 f3 59. h7 f2 60. Rf7+ Kg6 61. Rxf2 Kxh7 62. Rb2
$18) 52. h6 Kc5 53. Rf7 Kxb6 54. h7 Rh1 55. Kd4 Rh4+ (55... Kc6 56. Ke5 f4 57.
Kxf4 $18) 56. Ke5 f4 57. Kf5 f3 58. Kg6 $18) (47... Rb5 $2 48. Kc4 Rb1 {See
the variation 46.Rb8 Kd6 47.Kc4 Rb2 48.Rb7 Ke6.}) 48. Kd3 {Diagram {9} Black
has many possibilities to draw, but the easiest way is 48...f5.} (48. Kc2 {Now
the most simple is 48...Rb4.  Black draws also with 48...Rb5} Rb4 (48... Rb5
49. Kd3 (49. Kc3 Rb1 {Transposition to the line 43...Ke5 (instead of 43...Ke6)
44.Kc2 Rb5 45.g4 hg4 46.fg4 Kd5 47.Kc3 Rb1, D. 8.} ({Not} 49... f5 $2 {See the
line 43...Ke6, D. 18})) 49... f5 {With White king on d3 the move 49...f5 is
not dangerous due to the check from b3.} (49... Ke6 $2 $18 50. Kc4 Rb1 {
Transposition to the D. 12}) 50. g5 (50. gxf5 gxf5 51. h5 Kc6 52. Rh7 Kxb6)
50... Rb3+ (50... Kc5 51. Rb8 Rb3+ 52. Kc2 Rh3 53. Rg8 Kxb6 54. Rxg6+ Kc5 55.
Rh6 Kd5 56. g6 Ke6 57. h5 Kf6 58. Rh7) 51. Kc2 Rb4 52. Rd7+ (52. Rb8 Rxh4 53.
Rg8 Rc4+ $11) (52. h5 gxh5 53. g6 Kc6 54. g7 Rg4 $11) 52... Kc6 53. Rg7 Rxh4
54. Rxg6+ Kb7 55. Rf6 (55. Kd3 Rg4) 55... Rg4 56. g6 Rg3 57. Kd2 f4 58. Ke2
Re3+ 59. Kf2 Rg3 $11) 49. h5 (49. Rxf7 Rxb6 50. g5 Rb4 51. Rh7 Ke5 $11) (49. g5
Kc6 50. Rxf7 Kxb6 51. Rf6+ Kc5 52. Rxg6 Rxh4 $11) (49. Rxf7 Rxb6 50. Rf4 (50.
Re7 Rb4) 50... Ke5 $11) 49... gxh5 50. gxh5 Kc5 51. Rb8 Rh4 $11) (48. h5 gxh5
49. gxh5 (49. g5 h4 50. Rxf7 Rxb6) 49... Kc6 50. Rxf7 (50. Rb8 Rh1) 50... Kxb6
$11) (48. Rb8 Kc6 49. b7 (49. Rc8+ Kd6 $11) 49... Rf1 50. h5 gxh5 51. gxh5 Kc7
$11) (48. Rxf7 Rxb6 49. Rf4 (49. Re7 Rb1 50. Rg7 Rh1 $11) 49... Ke5 50. Rc4 Rd6
$11) (48. g5 Rc1+ 49. Kd2 Rb1 $11) 48... f5 (48... Rb5 49. Ke3 (49. Kc3 Rb1)
49... Ke5 ({Black should keep control in the centre.} 49... Ke6 $18 {loses.}
50. Kd4 Rb1 51. Rb8 $1 (51. h5 $2 gxh5 52. gxh5 Rd1+ 53. Ke3 (53. Kc3 Rh1 54.
Rc7 Rxh5) 53... Re1+ 54. Kf4 Rb1 55. h6 (55. Rb8 Rb4+ 56. Ke3 Kf6 $11) 55...
Kf6 56. h7 (56. Rb8 Kg6 $11) 56... Rb4+ $1 (56... Kg7 $2 57. Rxf7+ Kh8 58. Rf6
$18) 57. Ke3 Kg7 58. Rxf7+ Kh8 $11) 51... Kd6 (51... f5 52. b7 $18) (51... Rd1+
52. Kc5 Rc1+ 53. Kb5 Rb1+ 54. Kc6 Rc1+ 55. Kb7 Ke5 56. Rh8 Kf4 57. h5 gxh5 58.
gxh5 $18) (51... Kd7 52. Kc5 $18) 52. h5 gxh5 (52... Rb4+ 53. Kc3 Rxg4 54. h6
$18) (52... Rd1+ 53. Kc4 Rh1 54. b7 Kc6 55. Rf8 Kxb7 56. Rxf7+ Kc6 (56... Kc8
57. hxg6) 57. Rf6+ Kd7 58. Rxg6 $18) 53. gxh5 Rd1+ (53... Kc6 54. h6 Rh1 55.
Rh8 Kxb6 56. Ke5 $18) (53... Rh1 54. Rc8 $18) (53... f5 54. h6 $18) 54. Ke4
Re1+ 55. Kf5 Rf1+ (55... Rh1 56. Kg5 Kc6 57. b7 $18) 56. Kg5 Kc6 57. b7 Kc7 58.
Rf8 Kxb7 59. h6 $18) 50. Rb8 Rb3+ 51. Ke2 (51. Kd2 Kd6 52. Kc2 (52. h5 gxh5 53.
gxh5 Kc6 54. Rc8+ Kb7 55. Rf8 Rxb6 56. Rxf7+ Kc8 $11) 52... Rb5 53. Rb7 Kd5 {
Transposition to the line 43...Ke5 after 46...Kd5.}) 51... Kd6 52. h5 gxh5 53.
gxh5 Kc6 54. Rh8 Rh3 55. Rh6+ Kb7 $11 56. Kf2 f5 57. Kg2 Rh4 58. Kg3 (58. Kf3
f4 59. Ke4 Ka6 $11) 58... Rg4+ 59. Kh3 Rg5 60. Kh4 Rg1 61. Kh3 Rg5 62. Rh8 Kxb6
$11) (48... Rb3+ 49. Ke2 Ke6 ({Not} 49... Kc5 50. Rxf7 (50. Rc7+ Kxb6 51. Rxf7
Kc5 (51... Rh3 52. Rg7 Kc5 (52... Rxh4 53. Rxg6+ Kc5 54. Kf3 $18) 53. Rxg6 Rxh4
54. Kf3 $18) 52. Rg7 $18) 50... Rxb6 51. Rd7 Rb3 52. Rg7 Rh3 53. Rxg6 Rxh4 54.
Kf3 $18) 50. h5 (50. Rb8 Kd6 51. h5 gxh5 52. gxh5 Kc6 53. Rh8 Kb7 54. Rh6 Rh3 {
Transposition to the line 48...Rb5 (instead of 48...f5) after 55...Kb7.}) 50...
gxh5 51. gxh5 Rh3 (51... Kf6 52. Rb8 (52. Kd2 Rh3 $11) 52... Kg7 53. Kd2 f5 (
53... Kh7 54. Kc2 Rb5 55. Kc3 f5 56. Kc4 Rb1 57. Kc5 $18) 54. Kc2 (54. Ke2 f4
55. Kf2 f3 56. Rb7+ Kh6) 54... Rb5 55. Kd3 f4 $11) 52. Rb8 Kd7 (52... Kf6 $2
53. Rg8 Rb3 54. h6 $18) 53. Rh8 Kc6 54. Rh6+ Kb7 {Transposition to the line 48.
..Rb5 (instead of 48...f5) after 55...Kb7.}) 49. gxf5 gxf5 50. h5 Kc6 51. Rb8
Rh1 $11 1/2-1/2

