User:Yoavd/example for David

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.

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

{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})

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

{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}) } *

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

{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})

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

{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})

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

{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})

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

{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})

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

{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})