[Comment "auto-generated from http://www.jesseo.com/chesspublishing/pgn.php?pgndata=[Event%20%26quot;?%26quot;]%0A[Site%20%26quot;?%26quot;]%0A[Date%20%26quot;2011.06.16%26quot;]%0A[Round%20%26quot;?%26quot;]%0A[White%20%26quot;20...Qf6%20or%2020...Qe7%26quot;]%0A[Black%20%26quot;engine%20praxis%26quot;]%0A[Result%20%26quot;0-1%26quot;]%0A[PlyCount%20%26quot;120%26quot;]%0A[EventDate%20%26quot;2011.06.16%26quot;]%0A%0A1.%20e4%20e5%202.%20f4%20exf4%203.%20Nf3%20d6%204.%20Bc4%20h6%205.%20O-O%20g5%206.%20d4%20Bg7%207.%20c3%20Nc6%208.%20Qa4%0ABd7%209.%20Qb3%20Qe7%2010.%20Qxb7%20Rb8%2011.%20Qxc7%20Rc8%2012.%20Qb7%20Na5%2013.%20Bxf7+%20Qxf7%2014.%20Qa6%20Nc6%0A15.%20Na3%20Nf6%2016.%20Nb5%20Nxe4%2017.%20Nd2%20Nxd4%2018.%20Nxd4%20d5%2019.%20Qa3%20Bxd4+%2020.%20cxd4%20Qf6%20(%0A20...%20Qe7%2021.%20Qxa7%20(21.%20Qa5%20Qe6%2022.%20b3%20Rc2%2023.%20Nf3%20O-O%2024.%20Ba3%20Re8%2025.%20Bb4%20Rec8%0A26.%20Rad1%20Kg7%2027.%20Qxa7%20Re2%2028.%20Bc5%20Qg4%2029.%20Ne1%20Nc3%2030.%20Rd3%20Rxa2%2031.%20Qb6%20Ne4%2032.%0AQb7%20Qe6%2033.%20b4%20g4%2034.%20b5%20Nxc5%2035.%20dxc5%20Rxc5%2036.%20h3%20Ra1%2037.%20hxg4%20Rxe1%2038.%20Rxe1%0AQxe1+%2039.%20Kh2%20Qe6%2040.%20Qa7%20Rxb5%2041.%20Qc7%20Qxg4%2042.%20Rf3%20d4%2043.%20Rxf4%20Qh5+%2044.%20Kg1%0AQe8%2045.%20Qd6%20Qe3+%20%26%23123;0-1%26%23125;)%20(21.%20Qb3%20Qd6%2022.%20Nf3%20O-O%2023.%20Ne5%20Bf5%2024.%20Rf3%20Qe6%2025.%0ARf1%20Rfe8%2026.%20Re1%20Rb8%2027.%20Qd1%20Qb6%2028.%20Nf3%20Rb7%2029.%20Qb3%20Qc6%2030.%20Qd1%20g4%2031.%20Nd2%20f3%0A32.%20Nxe4%20Bxe4%2033.%20b3%20Rf7%2034.%20Be3%20fxg2%2035.%20Qxg4+%20Kh7%2036.%20Rac1%20Qf6%2037.%20b4%20Rg8%2038.%0AQf4%20Qxf4%20%26%23123;0-1%26%23125;)%2021...%20O-O%2022.%20Qb7%20Qe6%2023.%20Nxe4%20dxe4%2024.%20d5%20Qd6%2025.%20Bd2%20Rf5%2026.%0ABb4%20Rb8%2027.%20Bxd6%20Rxb7%2028.%20b3%20Rxd5%2029.%20Rfd1%20Rxd1+%2030.%20Rxd1%20e3%2031.%20Bc5%20Rc7%2032.%0ARc1%20Rc8%2033.%20a4%20Rb8%2034.%20a5%20Rxb3%2035.%20a6%20Bc6%2036.%20g3%20Be4%2037.%20a7%20Kf7%2038.%20gxf4%20gxf4%0A39.%20Ra1%20Ba8%2040.%20Kf1%20Rc3%2041.%20Bd6%20Rc2%2042.%20Bxf4%20Rf2+%2043.%20Ke1%20Rxf4%2044.%20Ke2%20Rf2+%2045.%0AKxe3%20Rxh2%2046.%20Ra6%20Kg7%2047.%20Kf4%20Rf2+%2048.%20Kg4%20Rf6%2049.%20Ra1%20Kg6%2050.%20Kh4%20Rd6%2051.%20Rg1+%0AKh7%2052.%20Ra1%20Rd4+%2053.%20Kh3%20Rf4%2054.%20Kg3%20Rc4%2055.%20Ra2%20h5%2056.%20Ra6%20Rg4+%2057.%20Kh3%20Rg6%0A58.%20Ra3%20Kh6%2059.%20Ra4%20Rf6%2060.%20Ra5%20Rd6%2061.%20Kh2%20Rd2+%2062.%20Kh3%20Rd3+%2063.%20Kh4%20Rd4+%2064.%0AKh3%20Rd5%2065.%20Ra3%20Rd1%2066.%20Ra5%20Rd4%2067.%20Kh2%20Kg6%2068.%20Kh3%20Rd5%2069.%20Ra3%20Rd1%2070.%20Ra5%20Rd4%0A71.%20Kh2%20Rd3%2072.%20Ra1%20Kf5%2073.%20Rf1+%20Rf3%2074.%20Ra1%20h4%2075.%20Rb1%20Ra3%2076.%20Rb8%20Rxa7%2077.%0ARh8%20Kg4%2078.%20Rg8+%20Kh5%2079.%20Rh8+%20Kg5%2080.%20Rg8+%20Kf4%2081.%20Rf8+%20Ke3%2082.%20Kh3%20Ra4%2083.%0ARe8+%20Kf2%2084.%20Rf8+%20Bf3%2085.%20Rf6%20Rb4%20%26%23123;0-1%26%23125;)%2021.%20Nf3%20Bb5%2022.%20Ne5%20Qb6%2023.%20Rd1%20Rh7%0A24.%20Qb3%20Be2%2025.%20Qxb6%20axb6%2026.%20Re1%20Rc2%2027.%20b4%20(27.%20a4%20Ra7%2028.%20b3%20b5%2029.%20Ba3%20bxa4%0A30.%20Bb4%20Bb5%2031.%20bxa4%20Rxa4%2032.%20Rxa4%20Bxa4%2033.%20Rb1%20Ra2%2034.%20Bc5%20Nxc5%2035.%20dxc5%20Bc2%0A36.%20Rb6%20Be4%2037.%20g3%20Rg2+%2038.%20Kf1%20Rxh2%2039.%20Re6+%20Kd8%2040.%20Rd6+%20Ke7%2041.%20gxf4%20gxf4%0A42.%20Ng6+%20Bxg6%2043.%20Rxg6%20h5%2044.%20Rd6%20Rd2%2045.%20Ke1%20Rd4%2046.%20Kf2%20h4%2047.%20Ke2%20h3%2048.%20Kf3%0Ah2%2049.%20Rh6%20Kd7%2050.%20Rxh2%20Kc6%2051.%20Rh8%20Kxc5%2052.%20Rc8+%20Kb4%2053.%20Ke2%20Rc4%2054.%20Rd8%20Re4+%0A55.%20Kd2%20Kc5%2056.%20Rf8%20Kd6%2057.%20Rf5%20Ke6%2058.%20Rf8%20Ke5%2059.%20Rf7%20Re3%2060.%20Re7+%20Kd4%2061.%0ARb7%20Ke4%2062.%20Rf7%20Kf3%2063.%20Rf6%20Kg3%2064.%20Rg6+%20Kf2%2065.%20Rd6%20Rg3%2066.%20Rxd5%20f3%2067.%20Re5%0AKg1%2068.%20Rf5%20f2%2069.%20Ke2%20Rg7%2070.%20Rxf2%20Re7+%2071.%20Kf3%20Rf7+%2072.%20Ke3%20Rxf2%2073.%20Kd4%20Rf5%0A74.%20Ke4%20Rc5%2075.%20Kd4%20Ra5%2076.%20Ke4%20Rh5%2077.%20Kf3%20Re5%2078.%20Kf4%20Re6%2079.%20Kg5%20Kf2%2080.%20Kf5%0ARe2%2081.%20Kf4%20Re1%2082.%20Kg4%20Ke3%2083.%20Kf5%20Kf3%2084.%20Kg5%20Re5+%2085.%20Kg6%20Kg4%20%26%23123;0-1%26%23125;)%2027...%0AKd8%2028.%20a4%20Kc8%2029.%20b5%20Kb7%2030.%20Ba3%20g4%2031.%20Rec1%20Rxc1+%2032.%20Bxc1%20f3%2033.%20Be3%20Rc7%2034.%0ABf2%20h5%2035.%20Nc6%20Rc8%2036.%20Ne5%20(36.%20Nb4%20Bc4%2037.%20Rc1%20Ra8%2038.%20Na6%20Rf8%2039.%20Rc2%20fxg2%0A40.%20Kxg2%20Rf3%2041.%20Nb4%20Ra3%2042.%20Rb2%20Rxa4%2043.%20Nc2%20Bxb5%2044.%20Be1%20Be2%2045.%20Bb4%20h4%2046.%0AKg1%20h3%2047.%20Be1%20Bc4%2048.%20Bb4%20Bd3%2049.%20Na3%20Kc6%2050.%20Rb3%20b5%20%26%23123;0-1.%20For%20example:%26%23125;%2051.%0ARb2%20Ra7%2052.%20Rb3%20Bc4%2053.%20Rb1%20Rf7%2054.%20Nxc4%20dxc4%2055.%20d5+%20Kxd5%2056.%20Rd1+%20Ke5%2057.%20Re1%0ARf3%2058.%20Rb1%20Rf2%2059.%20Be1%20Rg2+%2060.%20Kh1%20Kf4%2061.%20Rxb5%20c3%2062.%20Rb1%20c2%2063.%20Ra1%20Ke3%2064.%0ARc1%20Kd4%2065.%20Ra1%20Nf2+%2066.%20Bxf2+%20Rxf2)%2036...%20Rc2%2037.%20Be1%20fxg2%2038.%20Nf7%20Bf1%2039.%20a5%0Abxa5%2040.%20Bxa5%20Nf2%2041.%20Ng5%20Nd3%2042.%20Ne6%20Nc1%2043.%20Rxc1%20Rxc1%2044.%20Nc5+%20Kb8%2045.%20Bd8%0ABxb5+%2046.%20Kxg2%20Rc2+%2047.%20Kg1%20Re2%2048.%20Bh4%20Kc7%2049.%20Bg5%20Kc6%2050.%20Bf6%20Re1+%2051.%20Kg2%0ARf1%2052.%20Bh4%20Rf4%2053.%20Ne6%20Re4%2054.%20Ng7%20Rxd4%2055.%20Nxh5%20Rd2+%2056.%20Kg3%20d4%2057.%20Bg5%20Re2%0A58.%20Nf4%20Ra2%2059.%20Kxg4%20d3%2060.%20Nxd3%20Bxd3%200-1%0A%0A"]
[Event "?"]
[Site "?"]
[Date "2011.06.16"]
[Round "?"]
[White "20...Qf6 or 20...Qe7"]
[Black "engine praxis"]
[Result "0-1"]
[PlyCount "120"]
[EventDate "2011.06.16"]

1. e4 e5 2. f4 exf4 3. Nf3 d6 4. Bc4 h6 5. O-O g5 6. d4 Bg7 7. c3 Nc6 8. Qa4
Bd7 9. Qb3 Qe7 10. Qxb7 Rb8 11. Qxc7 Rc8 12. Qb7 Na5 13. Bxf7+ Qxf7 14. Qa6 Nc6
15. Na3 Nf6 16. Nb5 Nxe4 17. Nd2 Nxd4 18. Nxd4 d5 19. Qa3 Bxd4+ 20. cxd4 Qf6 (
20... Qe7 21. Qxa7 (21. Qa5 Qe6 22. b3 Rc2 23. Nf3 O-O 24. Ba3 Re8 25. Bb4 Rec8
26. Rad1 Kg7 27. Qxa7 Re2 28. Bc5 Qg4 29. Ne1 Nc3 30. Rd3 Rxa2 31. Qb6 Ne4 32.
Qb7 Qe6 33. b4 g4 34. b5 Nxc5 35. dxc5 Rxc5 36. h3 Ra1 37. hxg4 Rxe1 38. Rxe1
Qxe1+ 39. Kh2 Qe6 40. Qa7 Rxb5 41. Qc7 Qxg4 42. Rf3 d4 43. Rxf4 Qh5+ 44. Kg1
Qe8 45. Qd6 Qe3+ {0-1}) (21. Qb3 Qd6 22. Nf3 O-O 23. Ne5 Bf5 24. Rf3 Qe6 25.
Rf1 Rfe8 26. Re1 Rb8 27. Qd1 Qb6 28. Nf3 Rb7 29. Qb3 Qc6 30. Qd1 g4 31. Nd2 f3
32. Nxe4 Bxe4 33. b3 Rf7 34. Be3 fxg2 35. Qxg4+ Kh7 36. Rac1 Qf6 37. b4 Rg8 38.
Qf4 Qxf4 {0-1}) 21... O-O 22. Qb7 Qe6 23. Nxe4 dxe4 24. d5 Qd6 25. Bd2 Rf5 26.
Bb4 Rb8 27. Bxd6 Rxb7 28. b3 Rxd5 29. Rfd1 Rxd1+ 30. Rxd1 e3 31. Bc5 Rc7 32.
Rc1 Rc8 33. a4 Rb8 34. a5 Rxb3 35. a6 Bc6 36. g3 Be4 37. a7 Kf7 38. gxf4 gxf4
39. Ra1 Ba8 40. Kf1 Rc3 41. Bd6 Rc2 42. Bxf4 Rf2+ 43. Ke1 Rxf4 44. Ke2 Rf2+ 45.
Kxe3 Rxh2 46. Ra6 Kg7 47. Kf4 Rf2+ 48. Kg4 Rf6 49. Ra1 Kg6 50. Kh4 Rd6 51. Rg1+
Kh7 52. Ra1 Rd4+ 53. Kh3 Rf4 54. Kg3 Rc4 55. Ra2 h5 56. Ra6 Rg4+ 57. Kh3 Rg6
58. Ra3 Kh6 59. Ra4 Rf6 60. Ra5 Rd6 61. Kh2 Rd2+ 62. Kh3 Rd3+ 63. Kh4 Rd4+ 64.
Kh3 Rd5 65. Ra3 Rd1 66. Ra5 Rd4 67. Kh2 Kg6 68. Kh3 Rd5 69. Ra3 Rd1 70. Ra5 Rd4
71. Kh2 Rd3 72. Ra1 Kf5 73. Rf1+ Rf3 74. Ra1 h4 75. Rb1 Ra3 76. Rb8 Rxa7 77.
Rh8 Kg4 78. Rg8+ Kh5 79. Rh8+ Kg5 80. Rg8+ Kf4 81. Rf8+ Ke3 82. Kh3 Ra4 83.
Re8+ Kf2 84. Rf8+ Bf3 85. Rf6 Rb4 {0-1}) 21. Nf3 Bb5 22. Ne5 Qb6 23. Rd1 Rh7
24. Qb3 Be2 25. Qxb6 axb6 26. Re1 Rc2 27. b4 (27. a4 Ra7 28. b3 b5 29. Ba3 bxa4
30. Bb4 Bb5 31. bxa4 Rxa4 32. Rxa4 Bxa4 33. Rb1 Ra2 34. Bc5 Nxc5 35. dxc5 Bc2
36. Rb6 Be4 37. g3 Rg2+ 38. Kf1 Rxh2 39. Re6+ Kd8 40. Rd6+ Ke7 41. gxf4 gxf4
42. Ng6+ Bxg6 43. Rxg6 h5 44. Rd6 Rd2 45. Ke1 Rd4 46. Kf2 h4 47. Ke2 h3 48. Kf3
h2 49. Rh6 Kd7 50. Rxh2 Kc6 51. Rh8 Kxc5 52. Rc8+ Kb4 53. Ke2 Rc4 54. Rd8 Re4+
55. Kd2 Kc5 56. Rf8 Kd6 57. Rf5 Ke6 58. Rf8 Ke5 59. Rf7 Re3 60. Re7+ Kd4 61.
Rb7 Ke4 62. Rf7 Kf3 63. Rf6 Kg3 64. Rg6+ Kf2 65. Rd6 Rg3 66. Rxd5 f3 67. Re5
Kg1 68. Rf5 f2 69. Ke2 Rg7 70. Rxf2 Re7+ 71. Kf3 Rf7+ 72. Ke3 Rxf2 73. Kd4 Rf5
74. Ke4 Rc5 75. Kd4 Ra5 76. Ke4 Rh5 77. Kf3 Re5 78. Kf4 Re6 79. Kg5 Kf2 80. Kf5
Re2 81. Kf4 Re1 82. Kg4 Ke3 83. Kf5 Kf3 84. Kg5 Re5+ 85. Kg6 Kg4 {0-1}) 27...
Kd8 28. a4 Kc8 29. b5 Kb7 30. Ba3 g4 31. Rec1 Rxc1+ 32. Bxc1 f3 33. Be3 Rc7 34.
Bf2 h5 35. Nc6 Rc8 36. Ne5 (36. Nb4 Bc4 37. Rc1 Ra8 38. Na6 Rf8 39. Rc2 fxg2
40. Kxg2 Rf3 41. Nb4 Ra3 42. Rb2 Rxa4 43. Nc2 Bxb5 44. Be1 Be2 45. Bb4 h4 46.
Kg1 h3 47. Be1 Bc4 48. Bb4 Bd3 49. Na3 Kc6 50. Rb3 b5 {0-1. For example:} 51.
Rb2 Ra7 52. Rb3 Bc4 53. Rb1 Rf7 54. Nxc4 dxc4 55. d5+ Kxd5 56. Rd1+ Ke5 57. Re1
Rf3 58. Rb1 Rf2 59. Be1 Rg2+ 60. Kh1 Kf4 61. Rxb5 c3 62. Rb1 c2 63. Ra1 Ke3 64.
Rc1 Kd4 65. Ra1 Nf2+ 66. Bxf2+ Rxf2) 36... Rc2 37. Be1 fxg2 38. Nf7 Bf1 39. a5
bxa5 40. Bxa5 Nf2 41. Ng5 Nd3 42. Ne6 Nc1 43. Rxc1 Rxc1 44. Nc5+ Kb8 45. Bd8
Bxb5+ 46. Kxg2 Rc2+ 47. Kg1 Re2 48. Bh4 Kc7 49. Bg5 Kc6 50. Bf6 Re1+ 51. Kg2
Rf1 52. Bh4 Rf4 53. Ne6 Re4 54. Ng7 Rxd4 55. Nxh5 Rd2+ 56. Kg3 d4 57. Bg5 Re2
58. Nf4 Ra2 59. Kxg4 d3 60. Nxd3 Bxd3 0-1