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User:Yoavd/example for David

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I am writing the Hebrew version of the article tactics in chess.

Here are some of my examples, in all positions black starts and plays a move that leads to win. I add the analysis from the Fritz 11 software, one of the strongest chess engines that proves that there is only one move that leads to win.

abcdefgh
8
h8 black king
a7 black pawn
g7 black pawn
b6 black pawn
h6 black pawn
b5 white pawn
c5 black pawn
d5 white rook
e5 black queen
f5 white pawn
c4 white pawn
e4 black rook
h4 white pawn
g3 white pawn
a2 white pawn
h2 white king
f1 white queen
8
77
66
55
44
33
22
11
abcdefgh

{Fritz 11: 1)} Rxh4+ 55. Kg2 Qe4+ 56. Qf3 Rh2+ 57. Kxh2 Qxf3 58. a3 Qe2+ 59. Kg1 Qxc4 60. Rd7 Qxb5 61. Rxa7 Qb1+ 62. Kh2 Qxf5 63. Kg2 Kh7 64. Re7 Kg6 {-7.76/16} *
({Fritz 11: 2)} 54... Re2+ 55. Kh3 Qe4 56. f6 Qe6+ 57. Qf5 Qxf5+ 58. Rxf5 gxf6 59. Rxf6 Kg7 60. Rd6 Rxa2 61. Kg4 Rc2 62. Kf5 Rf2+ 63. Ke4 Rf7 64. Re6 h5 {0.27/16})
({Fritz 11: 3)} 54... Qc3 55. Kh3 Qxc4 56. Qxc4 Rxc4 57. Rd8+ Kh7 58. Rd7 Ra4 59. f6 Kg8 60. Rxg7+ Kf8 61. Rh7 Rxa2 62. Kg4 c4 63. Rxh6 {0.48/15})
({Fritz 11: 4)} 54... Qb2+ 55. Kh3 h5 56. Qd3 Qe2 57. Qxe2 Rxe2 58. a3 Kg8 59. Rd7 Rc2 60. Rxa7 Rxc4 61. Rb7 Ra4 62. Rxb6 Rxa3 63. Rd6 {1.01/15})


abcdefgh
8
a7 black pawn
b7 white bishop
b6 white pawn
f6 black king
b5 white rook
f5 black bishop
f4 black pawn
g4 black pawn
h4 black knight
d3 black rook
b2 white rook
f2 white pawn
h2 white king
8
77
66
55
44
33
22
11
abcdefgh

{Fritz 11: 1)} g3+ 62. fxg3 fxg3+ 63. Kg1 Rd1# {-#3/2
({Fritz 11: 2)} 61... axb6 62. Kg1 Kg5 63. Rd5 Nf3+ 64. Kg2 Nh4+ 65. Kg1 {0.00/16})
({Fritz 11: 3)} 61... a5 62. Kg1 Rd1+ 63. Kh2 Rd3 {0.00/8})
({Fritz 11: 4)} 61... a6 62. Rxf5+ Kxf5 63. Rb1 g3+ 64. fxg3 fxg3+ 65. Kg1 Rd6 66. Bxa6 Rd2 67. Bb7 Kg4 68. Bc6 Nf3+ 69. Bxf3+ Kxf3 70. Rf1+ Ke4 71. b7 Rb2 72. Re1+ Kd5 73. Rd1+ Ke4 74. b8=Q Rxb8 {0.08/16}) } *


abcdefgh
8
f7 black pawn
g6 white pawn
b5 black pawn
e5 white rook
c4 black bishop
d4 black rook
e4 white bishop
h4 black king
h2 white king
8
77
66
55
44
33
22
11
abcdefgh

{Fritz 11: 1)} f6 57. Rf5 Rxe4 58. g7 Rg4 59. Rxf6 Rxg7 60. Rb6 Rg4 61. Rb8 Rf4 62. Rb6 Rf2+ 63. Kg1 Rd2 64. Rc6 Kg3 65. Rg6+ Kf4 66. Rb6 Kg5 67. Rb8 Kg4 68. Rb7 Kf5 69. Re7 b4 { -5.35/19} *


({Fritz 11: 2)} 56... fxg6 57. Kg2 g5 58. Kf3 g4+ 59. Ke3 Rd1 60. Rc5 Rd8 61. Kf4 Rf8+ 62. Ke3 Re8 63. Kf4 g3 64. Rc7 Rf8+ 65. Ke3 Rh8 66. Kf4 Rf8+ {-2.23/19})
({Fritz 11: 3)} 56... Rd2+ 57. Kg1 fxg6 58. Bxg6 Kg3 59. Rg5+ Kf3 60. Bh5+ Kf4 61. Rg7 Be6 62. Kf1 b4 63. Ke1 Rc2 64. Re7 Bd5 65. Bg6 Rg2 66. Rd7 Ke5 67. Re7+ Kd4 {-1.58/17}) ({Fritz 11: 4)} 56... f5 57. Bf3 Rd2+ 58. Kg1 Kg3 59. g7 Ra2 60. Bd1 Ra1 61.
Re1 Kf4 62. Kf2 Ra7 63. Rg1 Ra2+ 64. Ke1 b4 65. Rg6 Ke5 66. Rb6 {-0.94/18})



abcdefgh
8
c8 black rook
f8 black rook
g8 black king
a7 black pawn
e7 black pawn
f7 black pawn
g7 black bishop
h7 black pawn
c6 white knight
d6 black pawn
f6 black knight
g6 black pawn
b5 black queen
a4 white knight
c4 black bishop
b3 white pawn
g3 white pawn
h3 white pawn
a2 white pawn
b2 white bishop
e2 white pawn
f2 white pawn
a1 white rook
d1 white queen
f1 white rook
g1 white king
8
77
66
55
44
33
22
11
abcdefgh


{Fritz 11: 1)} Rxc6 17. Nc3 Qb8 18. bxc4 Qxb2 19. Qd3 Qb4 20. Nd5 Nxd5 21. cxd5 Rc3 22. Rab1 Qa4 23. Qd2 Rc2 24. Qe3 {-4.58/19} *

({Fritz 11: 2)} 16... Qxc6 17. Rc1 d5 18. bxc4 dxc4 19. Qc2 Rfd8 20. Rfd1 Ne4 21. Bxg7 Kxg7 22. Rxd8 Rxd8 23. Qb2+ Nf6 24. Qc2 Rc8 25. Nc3 {-1.71/19})
({Fritz 11: 3)} 16... Rc7 17. Nxe7+ Rxe7 18. bxc4 Qxc4 19. Re1 Rfe8 20. Rc1 Rxe2 21. Rxe2 Qxe2 22. Qxe2 Rxe2 23. Kf1 Re8 24. Rc7 a6 25. Ra7 {-0.48/19})
({Fritz 11: 4)} 16... Rfe8 17. Nxa7 Qa6 18. Nxc8 Bxe2 19. Nxe7+ Rxe7 20. Qc1 Bxf1 21. Qxf1 Qb7 22. Re1 Ne4 23. Bxg7 Kxg7 24. Qd3 {0.50/19})


abcdefgh
8
b7 black queen
f7 black pawn
g7 black king
a6 black pawn
e6 black pawn
f6 black bishop
g6 black pawn
b5 white pawn
c5 white rook
h5 black pawn
a4 white pawn
h4 white pawn
a3 black rook
f3 white knight
g3 white pawn
f2 white pawn
g2 white king
d1 white queen
8
77
66
55
44
33
22
11
abcdefgh

{Fritz 11: 1)} Qe4 43. b6 Rd3 44. Qxd3 Qxd3 45. b7 Qb3 46. Rc7 Qb6 47. Rd7 e5 48. a5 Qb4 49. Ng5 Bxg5 50. hxg5 e4 {-3.24/20 } *

({Fritz 11: 2)} 42... axb5 43. Rxb5 Qc6 44. Rb4 Ra1 45. Qe2 Qc1 46. Kh3 Qh1+ 47. Nh2 Qd5 48. Qc4 Qd2 49. Qf4 Qe2 50. Qe3 {-1.19/20})
({Fritz 11: 3)} 42... Kg8 43. bxa6 Qxa6 44. Qc2 Qb7 45. Rc6 Kg7 46. Qe4 Qa7 47. Rc4 Ra2 48. Nd4 Rd2 49. Ne2 Qb6 50. Qf3 Be5 {-0.64/20})
({Fritz 11: 4)} 42... Qa8 43. Rc4 axb5 44. axb5 Qb7 45. Rb4 Rc3 46. Rb3 Rc5 47. Qd3 e5 48. Rb4 e4 49. Rxe4 {-0.22/20})



abcdefgh
8
c8 black king
b7 black pawn
c7 black rook
e7 black rook
e6 black knight
a5 white queen
e5 white pawn
f5 black queen
h5 black pawn
c4 white pawn
f4 white pawn
g3 white pawn
a2 white pawn
b2 white rook
g2 white king
h2 white pawn
b1 white rook
8
77
66
55
44
33
22
11
abcdefgh


{Fritz 11: 1)} Nxf4+ 36. Kg1 Ne2+ 37. Rxe2 Qxb1+ 38. Re1 Qd3 39. Qa8+ Kd7 40. Qf8 Qd4+ 41. Kh1 Qg4 42. Qh6 Rc6 43. Qe3 Rxc4 44. Rb1 Kc8 {-3.10/16} *

({Fritz 11: 2)} 35... Kb8 36. Qd2 Rcd7 37. Qc2 Rd3 38. Kh1 Red7 39. Qe2 Kc8 40. a4 Nd4 41. Qg2 Nb3 {-0.35/16})
({Fritz 11: 3)} 35... Qe4+ 36. Kg1 Qd4+ 37. Kh1 Qe4+ 38. Kg1 {

0.00/9}) ({Fritz 11: 4)} 35... Nd4 36. Qa8+ Kd7 37. Re1 Qd3 38. Rb6 Re6 39. Qa4+ Ke7 40. Rxe6+ Nxe6 41. Qb4+ Kf7 42. Qb1 Qxc4 43. Qh7+ Kf8 44. Qh8+ Ke7 45. Kh3 {0.17/15})


abcdefgh
8
a8 black rook
f8 black rook
h8 black king
b7 black queen
e7 black bishop
g7 black pawn
h7 black pawn
f6 black pawn
a5 black pawn
f5 white knight
g5 white bishop
b4 black pawn
c3 black knight
g3 white queen
a2 white pawn
b2 white pawn
c2 white pawn
g2 white pawn
h2 white pawn
a1 white king
d1 white rook
h1 white rook
8
77
66
55
44
33
22
11
abcdefgh

{Fritz 11: 1)} fxg5 26. Rdf1 Ne4 27. Qd3 Bf6 28. Ng3 Nc5 29. Qe3 Na4 30. Rb1 Rac8 31. Qe4 Qc7 32. c4 Nb6 {-5.61/19} *

({Fritz 11: 2)} 25... Ne4 26. Qf3 fxg5 27. Rhe1 Bc5 28. Rxe4 g6 29. c4 gxf5 30. Re5 Qxf3 31. gxf3 Rac8 32. Kb1 Bb6 {-3.16/19})
({Fritz 11: 3)} 25... Nxd1 26. Bh6 g6 27. Bg7+ Kg8 28. Bxf8 Kxf8 29. Nxe7 Qxe7 30. Rxd1 Rd8 31. Qf3 Rxd1+ 32. Qxd1 Kg7 {

-0.53/19}) ({Fritz 11: 4)} 25... g6 26. Nxe7 Qxe7 27. Rde1 Qf7 28. bxc3 fxg5 29. Qe5+ Kg8 30. Rhf1 Qc4 31. Rxf8+ Rxf8 32. cxb4 axb4 33. Kb2 Rf2 34. Qb8+ { -0.21/19})