W to play wins
128 BP
129 BP
W to play draws
3 Ke1, f2+; 4 Kf1, Kf3; 5 Bd4, g3;
6 Bxf2, gxf2 stalemate or
2...g3;
3 Ke1, g2; 4 Bxf4+! draws
130 BP
W to play wins
1 Bf6+ Kc8; 2 Be7, Bf2; 3 Bd6, Bh4;
4 Be5
(1...Kc7; 2 Be7, Bf2; 3 Bd6+!)
131 B
B to play draws
1...Kd5! 2 Bf6, Ke4! 3 Be7, Kf2{Bf2};
4 Ba3, Bh4; 5 Bb2, Kf5!
132 B
W to play wins
(check)
2 Bf8, Be3; 3 Ba3, Bh6; 4
Bb2 and
5 Bg7,
so 1...Kf5, but 2 Bf8, Be3;
3 Ba3, Bh6; 4 Bc1!
133 B
If White's bishop were on a7,
1 Bb8, Bg1; 2 Bg3, Ba7; 3 Bf2! wins
W to play wins
(Centurini)
But 1 Bh4, Kb6! 2 Bf2+ Ka6 and
wB can't get to a7.
If the bB was on g3, 1 Bh4! Bh2;
2 Bf2 and 3 Ba7, 4 Bb8 wins.
It's not quite zugzwang,
since with Black to move
134 B
1...Bd6! 2 Be7, Bh2 holds (3 Bc5 isn't possible here)
So, zugzwang would be on if one of the squares h2 or d6 were taken away from the bB.
1 Bh4, Kb5; 2 Bf2, Ka6; 3 Bf5! Bg3; 4 Be7, Kb5; 5 Bd8, Kc6;
and now 6 Bh4! Bh2 when
7 Bf2, Bf4; 8 Ba7, Bh2; 9 Bb8, Ba7; 10 Bg3, Ba7;
11 Bf2! BINGO!
W to play wins:
1 Ke7, Nd8; 2 Be4, Nf7; 3 Bf3,Nd8;
4 Bd5! zugzwang
B to play draws:
1... Nd6+; 2 Ke7, Nc8+!
3 Ke6, Nb6 draws
135 NB
W to play wins:
zugzwang
B to play draws:
1...Ne7+ 2 Kd8 Nc6+ 3 Ke8, Ke6 draws
136 NB
W to play wins
1 Bc3! Kb6! 2 Ba5+! Kb5!
3 Bd8! (guarding f6) 3...Kc5;
4 Bg5, Kb5!
(4...Kd5; 5 Be7 or 4...Kb6;
5 Be3+ Kb5; 6 Bd4!)
5 Bh4! Kc5; 6 Bg3+{Bf2+} Kd5; 7 Bd4! Nd6;
8 c7 wins
137 NB
W to play wins
2...Bg3+! 3 Kc5! and now
3...Bc7? 4 Kb5! heading for b7
or 3...Bh4; 4 Kd5! with
5 Ke6 and 6 Ne7 winning
138 NB
W to play wins (Kosek)
4...Bg6; 5 Kg7, Be8; 6 Ne4+ Ke3;
7 Nd6, Kh5; 8 Kh6!
4...Bd3; 5 Ne6! Bg6
(5...Bf5 loses as above);
6 Nf4! Bb1; 7 Ke7, Ba2;
8 Ne6 winning
139 NB
W to play wins (Horwitz)
4 Kc7, Kd5!
(idea 5 Kb8? Kd6! 6 Kxa8, Kc7!
drawing)
5 Nb7! Ke6!
(idea 6 Kb8, Kd7; 7 Kxa8, Kc8!
drawing)
6 Na5! Ke7; 7 Kc8! Ke8; 8 Nc4! Ke7;
140 NB {bk on board moved from e3 to d4}
9 Kb8, Kd8; 10 Nd6, Kd7; 11 Nb7! Kc6; 12 Kxa8, Kc7; 13 Nd6!
zugzwang
White has the classic advantage of Bishop against Knight with pawns on both sides of the board. Black also has the disadvantage of having his pawns advanced and fixed, with an entry point on the Queen-side.
45. Kd3 Ne7 46. Be8 Kd5 47. Bf7+ Kd6
48. Kc4 Kc6 49. Be8+ Kb7 50. Kb5 Nc8
Black is being stretched.
51. Bc6+ Kc7 52. Bd5 Ne7 53. Bf7 Kb7
54. Bb3 Ka7 55. Bd1 Kb7 56. Bf3+ Kc7
57. Ka6 Nc8 58. Bd5 Ne7 59. Bc4 Nc6
60. Bf7 Ne7 61. Be8
Zugzwang
61... Kd8 62. Bxg6 Nxg6 63. Kxb6 Kd7
64. Kxc5 Ne7 65. b4 axb4 66. cxb4 Nc8
67. a5 Nd6 68. b5 Ne4+ 69. Kb6 Kc8
70. Kc6 Kb8 71. b6
1-0
50... h4 51. Kd3 Kf6 52. Kc4 Ke7
53. Kb5 Kd7 54. a4
[54. b4]
54... Kc7 55. b4 Kb8 56. a5 Ka7
57. Kc4 Bg3 58. b5 Bf2 59. Be2 Be3
60. Kb3 Bd2 61. b6+ Kb7 62. Ka4 Kc6
63. Bb5+ Kc5
1/2-1/2
Concedes the exchange for some attack.
22. b3 Rxc3 23. Bxc3 Rxa3 24. Be1 Bf6
25. Ke2 e5
Black's pieces are placed as well as they can be, so now we see the break. However, this may only serve in the long run to open lines for the Rook.
26. dxe5 Bxe5 27. f4 Bd6 28. Bc3 Ra2+
29. Kf3 Bc5 30. Rd1 Ke6 31. Rd3 Bf8
32. Be5 b4 33. Rc1 g5 34. g4 g6
35. e4 fxe4+ 36. Kxe4 Re2+ 37. Kf3 Rh2
38. Kg3 Re2 39. h4 gxh4+ 40. Kxh4 Be7+
41. Kg3 g5 42. Kf3 Rh2 43. Re1 Rh3+
44. Ke4 Rh4 45. fxg5 Bxg5 46. Kf3 Rh3+
47. Bg3+ Kd7 48. Kg2 Rh7
White decides to give back the exchange to get chances to advance the g-pawn.
49. Re5 Bf6 50. Rexd5+ cxd5 51. Rxd5+ Ke8
52. Rb5 Rd7 53. Rxb4 Kf7 54. Rb6 Bd4
55. Rd6
Forcing the exchange of Rooks, which are often a strong drawing factor, giving a pure Bishop ending.
55... Rxd6 56. Bxd6
56... Kg6 57. Kf3 Bf6 58. Bf4 Kf7 59. Ke4 Ke6 60. Be3 Be7
61. g5 Bd8 62. Kf4 Bc7+ 63. Kg4 Be5
64. Kh5 Kf7 65. Kh6 Kg8 66. Bb6 Bc3
67. Kg6 Bd2 68. Kf6 Bc3+ 69. Ke6 Bd2
70. g6 Bc3 71. Kd5 Bd2 72. Bd4 b5
73. Ke4 b4 74. Be3 Bc3 75. Kd3 Be1
76. Bd2 Bf2 77. Ke4 Bc5 78. Kd5 Be7
79. Kc4 Kg7 giving up the g-pawn
for the b-pawn 80. Bxb4 Bd8 81. Bc3+ Kxg6 82. b4 Kf5 83. Kd5
The change of front has left White with a pawn which can Queen on a dark square, and the Black King with difficulties in approaching. Black resigned, but Averbach later showed an amazing save (used by Fischer vs. Taimanov) which was known to Centurini in the last century!
[83. Kd5 Kf4 ! and Black
rushes around the back.]
White would of course like to move her Knight,
but the next puts a pawn on a dark square.
15. e5 Nd5 16. Nf3 Rd7 17. Rd1 Rfd8
18. Bd2 b5 19. Kf1 Nb6 20. Bf4 h6
21. Rxd7 Rxd7 22. Rd1 Rxd1+ 23. Qxd1
Black's next pushes the Bishop out of action on g3,
then Black makes a raid on the Queen-side.
23... Qe4 24. Bg3 Qc4+ 25. Qe2 Qxe2+
26. Kxe2 Na4 27. Kd2 Nxb2 28. Kc2 Nc4
29. Nd2 Nxd2 30. Kxd2
The Bishop ending that follows is very difficult for White:
a pawn down with a duff Bishop.
30... c4 31. Bf4 a6 32. Be3 Kf8
33. Bb6 Ke8 34. Ke3 Kd7 35. Kd4 Kc6
36. Ba7
White is running out of squares for the Bishop.
36... f5 37. a4
Doing Black's work for him.
37... g6 38. f4 h5 39. axb5+ Kxb5
40. g3 a5 41. Ke3 Bc5+ 42. Bxc5 Kxc5
1-0.
This document (bending.html) was last modified on 13th Aug 96 by
Dr. Dave