Houdini vs Stockfish Match 2014

[RIDDICK]

The Match has started again! Sygyzy 6-men tablebases (on SSD) and new Stockfish version:

Author: Ronald de Man
Date: Wed Feb 5 21:09:05 2014 +0100
Timestamp: 1391630945

Ronald de Man: «If DTZ tables are not available and the root position is in the tablebases, SF now also probes after pawn moves (in addition to captures). This should ensure progress in most (but not all) endgame positions with pawns.»

HOUDINI: 21.5/42 [ +006/=031/-005 ] - STOCKFISH: 20.5/42 [ +005/=031/-006 ]

[pgn][Event "HOUDINI vs STOCKFISH MATCH 2014"]
[Site "RIDDICK"]
[Date "2014.02.06"]
[Round "41"]
[White "HOUDINI 4 PRO X64"]
[Black "STOCKFISH 050214 64 SSE4.2"]
[Result "1/2-1/2"]
[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4 Nxe4 8.
d5 Ne5 9. Nxe5 dxe5 10. Re1 Nd6 11. Rxe5 g6 12. Re2 Bg7 13. Bg5 Nf5 14. Na3 Rd8
15. Rd2 O-O 16. Nc4 b5 17. d6 f6 18. Ne5 Qc8 19. dxe7 Nxe7 20. Nd7 fxg5 21.
Nxf8 Rxd2 22. Qxd2 Bxf8 23. Qxg5 Nf5 24. Qd2 Qe6 25. a4 a6 26. axb5 axb5 27. g3
Kg7 28. h3 Nd6 29. Ra7+ Kg8 30. Qf4 Nf7 31. Kg2 b4 32. cxb4 cxb4 33. h4 Qc6+
34. Qf3 Qxf3+ 35. Kxf3 Ne5+ 36. Ke2 h5 37. Rc7 Bd6 38. Rc8+ Kf7 39. f4 Ng4 40.
Kf3 Nh2+ 1/2-1/2[/pgn]
[pgn][Event "HOUDINI vs STOCKFISH MATCH 2014"]
[Site "RIDDICK"]
[Date "2014.02.06"]
[Round "42"]
[White "STOCKFISH 050214 64 SSE4.2"]
[Black "HOUDINI 4 PRO X64"]
[Result "1/2-1/2"]
[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4 Nxe4 8.
d5 Ne5 9. Nxe5 dxe5 10. Re1 f5 11. Nd2 Nxd2 12. Qxd2 e4 13. f3 e5 14. dxe6 Qxe6
15. fxe4 fxe4 16. Qd1 Kf7 17. a4 Bd6 18. Qh5+ Kg8 19. a5 Rc8 20. Ra4 c4 21. Be3
h6 22. Bxa7 Kh7 23. Bd4 Rhf8 24. Qe2 Rfe8 25. g3 Qg6 26. Raa1 Rc6 27. Kg2 e3
28. Rad1 Re6 29. Qf1 Bc5 30. Qf3 Qc2+ 31. Qe2 1/2-1/2[/pgn]

[RIDDICK]

Amazing endgame in the 44th round! Houdini manages to bend Stockfish in its domain (endgame), and increases its advantage to +2!

HOUDINI: 23.0/44 [ +007/=032/-005 ] - STOCKFISH: 21.0/44 [ +005/=032/-007 ]

[pgn][Event "HOUDINI vs STOCKFISH MATCH 2014"]
[Site "RIDDICK"]
[Date "2014.02.07"]
[Round "43"]
[White "HOUDINI 4 PRO X64"]
[Black "STOCKFISH 050214 64 SSE4.2"]
[Result "1/2-1/2"]
[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3 Nf6 7. d4 cxd4 8.
Nxd4 g6 9. f3 Nxd4 10. Qxd4 Bg7 11. O-O O-O 12. Qd3 a6 13. Be3 Rfc8 14. a4 Qc7
15. b3 e6 16. Rab1 Nd7 17. Rfd1 Nc5 18. Qc2 Rd8 19. Rd2 Be5 20. Ne2 b6 21. Rbd1
Rac8 22. g3 Rd7 23. Kg2 Nb7 24. Bd4 Nc5 25. Nc1 Bxd4 26. Rxd4 Nb7 27. Qd2 Rdd8
28. Qe2 Qc5 29. Qa2 Qa5 30. R4d2 Qc3 31. Qb1 Nc5 32. Rc2 Qf6 33. Nd3 Kf8 34.
Rcd2 Ke7 35. Qc2 g5 36. Re2 h5 37. Nf2 Qe5 38. Red2 a5 39. Rd4 Rd7 40. Qc3 Rg8
41. Nd3 Nxd3 42. Qxd3 f6 43. Qc2 Rdd8 44. Qf2 Rh8 45. R4d2 Qc5 46. Qe1 Qe5 47.
Qe3 Qc5 48. Qe2 Rh6 49. Rd3 Rhh8 50. Kf1 Kf7 51. Qe1 Ke7 52. Kg2 Rhg8 53. Qd2
Qc6 54. Qe2 Qc5 55. R3d2 Rh8 56. Kh1 Qe5 57. Rf1 Qc5 58. Rd3 Kd7 59. Qb2 Qe5
60. Qg2 Qc5 61. Rfd1 Kc7 62. Qb2 h4 63. g4 Rhf8 64. Kg2 Qe5 65. Qd2 h3+ 66. Kh1
Qc5 67. Re1 Rg8 68. Rc1 Rc8 69. Rd1 Rcd8 70. Qe3 Rh8 71. Qe2 Rhf8 72. Rd4 Rh8
73. R4d2 Rhg8 74. Qf1 Rh8 75. Rb2 f5 76. gxf5 exf5 77. Re2 fxe4 78. Rd5 Qb4 79.
Re3 Rdf8 80. Qf2 Rxf3 81. Rxf3 exf3 82. Rb5 Qc3 83. Qxb6+ Kd7 84. Qb7+ Kd8 85.
Qa8+ Kd7 86. Qb7+ Kd8 87. Qa8+ Kd7 88. Qb7+ 1/2-1/2[/pgn]
[pgn][Event "HOUDINI vs STOCKFISH MATCH 2014"]
[Site "RIDDICK"]
[Date "2014.02.07"]
[Round "44"]
[White "STOCKFISH 050214 64 SSE4.2"]
[Black "HOUDINI 4 PRO X64"]
[Result "0-1"]
[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3 Nf6 7. d4 cxd4 8.
Nxd4 g6 9. f3 Bg7 10. Be3 O-O 11. O-O a6 12. Qd3 Qc7 13. b3 Qa5 14. Rfd1 Nd7
15. Rac1 Rfe8 16. Nde2 Nc5 17. Qd2 b5 18. Nd5 b4 19. Bg5 Nd7 20. Bh4 h5 21. Bg3
Rac8 22. Rc2 e6 23. Ndf4 Nc5 24. Qe1 Ne5 25. Rcd2 Red8 26. Bf2 Qc7 27. Nd4 Qe7
28. Be3 Bf6 29. Qe2 Kh7 30. Kh1 Kg8 31. Nh3 Nc6 32. Nxc6 Rxc6 33. Bxc5 Rxc5 34.
f4 Qc7 35. Qe3 Ra5 36. Qf2 Rc5 37. Rd3 a5 38. Qd2 Be7 39. Qe2 a4 40. Rf1 Qd7
41. Rdf3 axb3 42. axb3 Bf6 43. f5 exf5 44. exf5 Re8 45. Qd2 Rxf5 46. Rxf5 gxf5
47. Qxb4 Re4 48. Qd2 h4 49. Qf2 d5 50. Rd1 d4 51. Nf4 Bg5 52. Nd3 Re3 53. b4
Qe6 54. Nc5 Qe7 55. Qf1 f4 56. Nd3 Kf8 57. c5 Qe4 58. Nf2 Qd5 59. b5 h3 60. c6
Bd8 61. Nxh3 Rxh3 62. Qxf4 Rc3 63. Rxd4 Rc1+ 64. Qxc1 Qxd4 65. Qa3+ Be7 66. Qc1
Bd6 67. b6 Qxb6 68. Qh6+ Ke7 69. Qh4+ Ke6 70. Qc4+ Kf6 71. Qh4+ Kf5 72. Qh5+
Ke6 73. Qg4+ f5 74. Qg8+ Ke5 75. Qg3+ Kd5 76. Qf3+ Ke6 77. g3 Qb2 78. Kg1 Be5
79. c7 Qc1+ 80. Kg2 Qxc7 81. Qb3+ Kf6 82. Qg8 Qc6+ 83. Kh3 Qd6 84. Qh8+ Kg5 85.
Qg8+ Qg6 86. Qa2 Qh6+ 87. Kg2 Qc6+ 88. Kh3 Qc8 89. Qa4 Qc1 90. Qb5 Qg1 91. Qe2
Bd4 92. Qc4 Qe3 93. Kg2 Qe4+ 94. Kh3 Bg7 95. Qa6 Bf6 96. Qf1 Kg6 97. Qb5 Qg4+
98. Kg2 Kg5 99. Qa6 Qd4 100. Qf1 Qd2+ 101. Kh3 Qb4 102. Qe2 Qd4 103. Qa6 Be5
104. Qf1 Qg4+ 105. Kg2 Qa4 106. Qf2 Qc6+ 107. Kh3 Qd7 108. Qf3 Qd2 109. Qb3 Qd4
110. Qa2 Qg4+ 111. Kg2 Qe4+ 112. Kh3 Bf6 113. Qa6 Qc2 114. Qb5 Qc1 115. Qd3 Qc5
116. Qf1 Qe3 117. Kg2 Qe5 118. Kh3 Kg6 119. Qc4 Qd4 120. Qg8+ Kh5 121. Kg2 Qd2+
122. Kh3 Qe2 123. Qh7+ Kg5 0-1[/pgn]

[shrapnel]

Hmm... off-topic maybe, but Houdini holding its own against even the latest Stockfish Dev. versions makes one wonder exactly how talented are the large number of stockfish programmers !
In my opinion, one Robert Houdart or even one Larry Kaufmann are a hundred times more talented than the hundreds of Stockfish programmers put together.

[Sedat Canbaz]

Hmm... off-topic maybe, but Houdini holding its own against even the latest Stockfish Dev. versions makes one wonder exactly how talented are the large number of stockfish programmers !
In my opinion, one Robert Houdart or even one Larry Kaufmann are a hundred times more talented than the hundreds of Stockfish programmers put together.

Just my two cents over this issue,

First of all many thanks to Richard B Riddick

You made me lough Anil You are 100 % wrong about Stockfish performance...
For example, on my testings (at blitz and slow time controls) Stockfish performed better than Komodo and Houdini

All of them (Komodo,Houdini,Stockfish) are super strong engines,
it is really sad and injustice that you have such opinion about Stockfish's Authors Note also that Stockfish is completely 100 % free...!!!

Show a little bit respect please...

One thing more,
I'd like point out that due to no much free time,I checked only the last one, B52: Sicilian Moscow
Where I noticed Stockfish or any other Top engines will suffer (as Whites) due to critical, weak openings...

And it does not matter reversed colors or...
The top engines should be really very carefully tested... especially under these conditions
My recommendation is that, the top engines should be tested with very strong openings,when I say with very strong openings, I dont mean about the opening lines,which are played by Grandmaster moves, I mean especially for lines, which suit to Top Engines styles...
Where Whites should have 55% wining percentage and Blacks 45 %


Note also that the Top Book Authors (Plychess,Testo,SCCT,...) never prefer B52: Sicilian Moscow

Do you know why ??? I expect that you will not find the answer...so I will try to help you...
Just because the Top Book Makers have a lot of knowledge about openings...
They (Top Book Authors) are testing their books with thousands of games...maybe millions...
Spending hours,days,weeks,months,years...
And finely after such efforts,work and experience: the success is at the door


Btw, here are some opening books, based on slow time controls:

Opening book based on SSDF/CEGT 40/120 games (minimum 2900 Elo)



Opening book based on CCRL 40/40 games (minimum 3000 Elo)


And here is the Perfect 2013 book (I think 3.Bb5 in my previous book version is not allowed too) , where 3.Bb5 is not allowed for playing


BTW, I started testing Komodo,Houdini,Stockfish at 40/120 too and do you know which chess engine is the current leader ??
again Stockfish and very soon I hope to publish the results...

Hope this helps...


Best,
Sedat

[RIDDICK]

I'd like point out that due to no much free time,I checked only the last one, B52: Sicilian Moscow
Where I noticed Stockfish or any other Top engines will suffer (as Whites) due to critical, weak openings...

And it does not matter reversed colors or...
The top engines should be really very carefully tested... especially under these conditions
My recommendation is that, the top engines should be tested with very strong openings,when I say with very strong openings, I dont mean about the opening lines,which are played by Grandmaster moves, I mean especially for lines, which suit to Top Engines styles...

Hi Sedat Canbaz, thanks for your opinion but I don't agree with what you said. Engine test must be heterogeneous as possible! If an opening line is weak, both engines should be able to exploit weaknesses of such opening line. If B52: Sicilian Moscow is a weak opening line, both engines would have to win at least one game. Instead Houdini only was able to win two games (white and black side), but Stockfish none (5-3 with 6 draws). Also the opening lines choices by Graham Banks, have been carefully selected. For these reasons I chose this library openings, it has been carefully selected and it is really heterogeneous.

I think Houdini is more complete engine (that is stronger) than Stockfish (for now clearly), and this match is an excellent testing ground!

[beram]

Remarkable results sofar, but to few games to tell with certainty
Remarkable because already for 3 -4 months in matches at rapid time control and longer the Stockfish versions are better in matches against Houdini 4.
And with longer time controls the winning percentage only tends to become bigger for Stockfish
My guess is that at very long time controls such as yours, the ELO differences between engines diminish because of the growing amount of draws and random luck factor
There are to few matches with more than 100 games at very LTC played so I really hope you will continue at least until 100 games

[RIDDICK]

There are to few matches with more than 100 games at very LTC played so I really hope you will continue at least until 100 games

You don't worry, total games will be 496 (248 positions)!

[Uri Blass]

Hmm... off-topic maybe, but Houdini holding its own against even the latest Stockfish Dev. versions makes one wonder exactly how talented are the large number of stockfish programmers !
In my opinion, one Robert Houdart or even one Larry Kaufmann are a hundred times more talented than the hundreds of Stockfish programmers put together.

You forget that Houdini and Komodo have the advantage that it is not a free source code
so Robert houdart or Larry Kaufman can learn from the code of stockfish when the opposite is not correct.

Even in case that houdini or komodo was free source code the results do not measure talent because programmers who spend more time or use more testing time may have the advantage and nobody measure the time that programmers of stockfish use for developing.

[beram]

Uri, don't bother, dont feed the troll

[beram]

Amazing endgame in the 44th round! Houdini manages to bend Stockfish in its domain (endgame), and increases its advantage to +2!

HOUDINI: 23.0/44 [ +007/=032/-005 ] - STOCKFISH: 21.0/44 [ +005/=032/-007 ]

[pgn][Event "HOUDINI vs STOCKFISH MATCH 2014"]
[Site "RIDDICK"]
[Date "2014.02.07"]
[Round "43"]
[White "HOUDINI 4 PRO X64"]
[Black "STOCKFISH 050214 64 SSE4.2"]
[Result "1/2-1/2"]
[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3 Nf6 7. d4 cxd4 8.
Nxd4 g6 9. f3 Nxd4 10. Qxd4 Bg7 11. O-O O-O 12. Qd3 a6 13. Be3 Rfc8 14. a4 Qc7
15. b3 e6 16. Rab1 Nd7 17. Rfd1 Nc5 18. Qc2 Rd8 19. Rd2 Be5 20. Ne2 b6 21. Rbd1
Rac8 22. g3 Rd7 23. Kg2 Nb7 24. Bd4 Nc5 25. Nc1 Bxd4 26. Rxd4 Nb7 27. Qd2 Rdd8
28. Qe2 Qc5 29. Qa2 Qa5 30. R4d2 Qc3 31. Qb1 Nc5 32. Rc2 Qf6 33. Nd3 Kf8 34.
Rcd2 Ke7 35. Qc2 g5 36. Re2 h5 37. Nf2 Qe5 38. Red2 a5 39. Rd4 Rd7 40. Qc3 Rg8
41. Nd3 Nxd3 42. Qxd3 f6 43. Qc2 Rdd8 44. Qf2 Rh8 45. R4d2 Qc5 46. Qe1 Qe5 47.
Qe3 Qc5 48. Qe2 Rh6 49. Rd3 Rhh8 50. Kf1 Kf7 51. Qe1 Ke7 52. Kg2 Rhg8 53. Qd2
Qc6 54. Qe2 Qc5 55. R3d2 Rh8 56. Kh1 Qe5 57. Rf1 Qc5 58. Rd3 Kd7 59. Qb2 Qe5
60. Qg2 Qc5 61. Rfd1 Kc7 62. Qb2 h4 63. g4 Rhf8 64. Kg2 Qe5 65. Qd2 h3+ 66. Kh1
Qc5 67. Re1 Rg8 68. Rc1 Rc8 69. Rd1 Rcd8 70. Qe3 Rh8 71. Qe2 Rhf8 72. Rd4 Rh8
73. R4d2 Rhg8 74. Qf1 Rh8 75. Rb2 f5 76. gxf5 exf5 77. Re2 fxe4 78. Rd5 Qb4 79.
Re3 Rdf8 80. Qf2 Rxf3 81. Rxf3 exf3 82. Rb5 Qc3 83. Qxb6+ Kd7 84. Qb7+ Kd8 85.
Qa8+ Kd7 86. Qb7+ Kd8 87. Qa8+ Kd7 88. Qb7+ 1/2-1/2[/pgn]
[pgn][Event "HOUDINI vs STOCKFISH MATCH 2014"]
[Site "RIDDICK"]
[Date "2014.02.07"]
[Round "44"]
[White "STOCKFISH 050214 64 SSE4.2"]
[Black "HOUDINI 4 PRO X64"]
[Result "0-1"]
[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3 Nf6 7. d4 cxd4 8.
Nxd4 g6 9. f3 Bg7 10. Be3 O-O 11. O-O a6 12. Qd3 Qc7 13. b3 Qa5 14. Rfd1 Nd7
15. Rac1 Rfe8 16. Nde2 Nc5 17. Qd2 b5 18. Nd5 b4 19. Bg5 Nd7 20. Bh4 h5 21. Bg3
Rac8 22. Rc2 e6 23. Ndf4 Nc5 24. Qe1 Ne5 25. Rcd2 Red8 26. Bf2 Qc7 27. Nd4 Qe7
28. Be3 Bf6 29. Qe2 Kh7 30. Kh1 Kg8 31. Nh3 Nc6 32. Nxc6 Rxc6 33. Bxc5 Rxc5 34.
f4 Qc7 35. Qe3 Ra5 36. Qf2 Rc5 37. Rd3 a5 38. Qd2 Be7 39. Qe2 a4 40. Rf1 Qd7
41. Rdf3 axb3 42. axb3 Bf6 43. f5 exf5 44. exf5 Re8 45. Qd2 Rxf5 46. Rxf5 gxf5
47. Qxb4 Re4 48. Qd2 h4 49. Qf2 d5 50. Rd1 d4 51. Nf4 Bg5 52. Nd3 Re3 53. b4
Qe6 54. Nc5 Qe7 55. Qf1 f4 56. Nd3 Kf8 57. c5 Qe4 58. Nf2 Qd5 59. b5 h3 60. c6
Bd8 61. Nxh3 Rxh3 62. Qxf4 Rc3 63. Rxd4 Rc1+ 64. Qxc1 Qxd4 65. Qa3+ Be7 66. Qc1
Bd6 67. b6 Qxb6 68. Qh6+ Ke7 69. Qh4+ Ke6 70. Qc4+ Kf6 71. Qh4+ Kf5 72. Qh5+
Ke6 73. Qg4+ f5 74. Qg8+ Ke5 75. Qg3+ Kd5 76. Qf3+ Ke6 77. g3 Qb2 78. Kg1 Be5
79. c7 Qc1+ 80. Kg2 Qxc7 81. Qb3+ Kf6 82. Qg8 Qc6+ 83. Kh3 Qd6 84. Qh8+ Kg5 85.
Qg8+ Qg6 86. Qa2 Qh6+ 87. Kg2 Qc6+ 88. Kh3 Qc8 89. Qa4 Qc1 90. Qb5 Qg1 91. Qe2
Bd4 92. Qc4 Qe3 93. Kg2 Qe4+ 94. Kh3 Bg7 95. Qa6 Bf6 96. Qf1 Kg6 97. Qb5 Qg4+
98. Kg2 Kg5 99. Qa6 Qd4 100. Qf1 Qd2+ 101. Kh3 Qb4 102. Qe2 Qd4 103. Qa6 Be5
104. Qf1 Qg4+ 105. Kg2 Qa4 106. Qf2 Qc6+ 107. Kh3 Qd7 108. Qf3 Qd2 109. Qb3 Qd4
110. Qa2 Qg4+ 111. Kg2 Qe4+ 112. Kh3 Bf6 113. Qa6 Qc2 114. Qb5 Qc1 115. Qd3 Qc5
116. Qf1 Qe3 117. Kg2 Qe5 118. Kh3 Kg6 119. Qc4 Qd4 120. Qg8+ Kh5 121. Kg2 Qd2+
122. Kh3 Qe2 123. Qh7+ Kg5 0-1[/pgn]

It seems to be that Stockfish has difficulty with this position in its lost game
it cant find the strong black move 55. ..f4 ! until depth 40 (about 2minutes) whereafter white seems lost because of pressure, attack on it kingside. Komodo 6T and Houdini 4 instantly find f4 with black advantage

[d] 6k1/4qp2/8/2N2pb1/1PPp3p/4r3/6PP/3R1Q1K b - - 0 1

16: STOCKFISH 050214 64 SSE4.2 - HOUDINI 4 PRO X64, HOUDINI vs STOCKFISH MATCH 2014 2014
6k1/4qp2/8/2N2pb1/1PPp3p/4r3/6PP/3R1Q1K b - - 0 1

Analysis by Stockfish 040214 64 5x:

55...h3 56.gxh3 d3 57.Nxd3 Qe4+ 58.Kg1 Re2 59.Nf2 Rxf2 60.Kxf2 Be3+ 61.Ke1 Bg5+ 62.Qe2 Bh4+ 63.Kd2 Bg5+ 64.Ke1
= (0.00) Depth: 38/28 00:00:31 218mN
55...h3 56.gxh3 d3 57.Nxd3 Qe4+ 58.Kg1 Re2 59.Nf2 Rxf2 60.Kxf2 Be3+ 61.Ke1 Bg5+ 62.Qe2 Bh4+ 63.Kd2 Bg5+ 64.Ke1
= (0.00) Depth: 39/28 00:00:41 290mN
55...f4 56.Nd3 h3 57.Nf2 Qxb4 58.Nxh3 Bh6 59.Nf2 d3 60.Nxd3 Qxc4 61.Kg1 Qc2 62.Nf2 Qg6 63.Nd3 f3
= (-0.08 !) Depth: 40/42 00:01:58 834mN

(Bram, Sommelsdijk 08.02.2014)

16: STOCKFISH 050214 64 SSE4.2 - HOUDINI 4 PRO X64, HOUDINI vs STOCKFISH MATCH 2014 2014
6k1/4qp2/8/2N2pb1/1PPp3p/4r3/6PP/3R1Q1K b - - 0 1

Analysis by Komodo TCEC 64-bit 6x:


55...Kg7 56.Nd3 Qe6 57.Nc5 Qe5 58.Nd3 Qe6
= (0.00) Depth: 21 00:00:05 34556kN
55...f4
= (-0.16 !) Depth: 21 00:00:14 92949kN
55...f4 56.Nd3
= (-0.15 --) Depth: 21 00:00:19 126mN
55...f4 56.Nd3 f6 57.Ne1 Qe4 58.Nf3 d3 59.Nd2 Qe6 60.h3 Qc6 61.Kh2 Qc7 62.Kh1 Qc6
= (0.00) Depth: 22 00:00:23 154mN
55...f4 56.Nd3 f6 57.Ne1 Qe4 58.Nf3 d3 59.Nd2 Qb7 60.Nf3 Qe4
= (0.00) Depth: 23 00:00:26 172mN
55...f4
= (-0.16 !) Depth: 24 00:00:39 265mN
55...f4 56.Qg1 Re2 57.h3 Re3 58.Qf1 Qf6 59.Rd3 Qe5 60.Rxe3 fxe3 61.Qe2 Kg7 62.Kg1 f6 63.Nd3 Qe6 64.c5 Qa6 65.Qd1 Qb5 66.Qe2 Kh6 67.Qf1 Qa4 68.Qe2 f5 69.Qf3 Kg6
=/+ (-0.33) Depth: 24 00:01:06 447mN

(Bram, Sommelsdijk 08.02.2014)

16: STOCKFISH 050214 64 SSE4.2 - HOUDINI 4 PRO X64, HOUDINI vs STOCKFISH MATCH 2014 2014
6k1/4qp2/8/2N2pb1/1PPp3p/4r3/6PP/3R1Q1K b - - 0 1

Analysis by Houdini 4 x64:

55...f4
= (-0.18 !) Depth: 16/44 00:00:01 9624kN
55...f4 56.Nd3 h3 57.gxh3 f3 58.Qg1 Kf8 59.Qg3 f5 60.b5 f2 61.Qxf2 Qe4+ 62.Qg2 Rxd3 63.Rxd3 Qxd3 64.Qxg5 Qf1+ 65.Qg1 Qxc4 66.Qa1 Qxb5 67.Qxd4 Qf1+ 68.Qg1 Qxh3 69.Qc5+ Kf7 70.Kg1 Qg4+ 71.Kf2 Qh4+ 72.Kf3 Qe4+ 73.Kg3
= (-0.16) Depth: 16/44 00:00:01 9730kN
55...f4 56.Nd3 h3 57.gxh3 f3 58.Qg1 Kf8 59.Qg3 f5 60.b5 f2 61.Qxf2 Qe4+ 62.Qg2 Rxd3 63.Rxd3 Qxd3 64.Qxg5 Qf1+ 65.Qg1 Qxc4 66.Qa1 Qxb5 67.Qxd4 Qf1+ 68.Qg1 Qxh3 69.Qc5+ Kf7 70.Kg1 Qg4+ 71.Kf2 Qh4+ 72.Kf3 Qe4+ 73.Kf2
= (-0.17) Depth: 16/45 00:00:01 10134kN
55...f4
= (-0.24 !) Depth: 16/48 00:00:01 12059kN
55...f4
=/+ (-0.38 !) Depth: 16/48 00:00:02 17630kN
55...f4 56.Qg1 Kg7 57.Qf2 d3 58.Nxd3 Qe4 59.Nc5 Qxc4 60.Qb2+ Kg8 61.Qd2 Kg7 62.Rc1 Re2 63.Rxc4 Rxd2 64.Rc1 Rb2 65.Nd3 Rb3 66.Rd1 h3 67.Kg1 hxg2 68.Kxg2 Kf6
= (-0.15) Depth: 16/57 00:00:03 25348kN
55...f4
= (-0.22 !) Depth: 17/57 00:00:03 26380kN
55...f4
=/+ (-0.36 !) Depth: 17/57 00:00:03 28619kN
55...f4 56.Qg1 Kg7 57.Qf2 d3 58.Nxd3 Qe4 59.Nc5 Qxc4 60.Qb2+ Bf6 61.Qd2 Bd4 62.Nd7 Bc3 63.Qf2 h3 64.Rg1 Re6 65.Qc5 Qxc5 66.bxc5 hxg2+ 67.Rxg2+ Kh6 68.Rg4 f3 69.Kg1 Rg6 70.Rxg6+ fxg6
=/+ (-0.33) Depth: 17/57 00:00:03 29222kN
55...f4 56.Qg1 Kg7 57.Qf2 d3 58.Nxd3 Qe4 59.Nc5 Qxc4 60.Qd2 Bf6 61.Kg1 Rc3 62.Nd7 Qxb4 63.Nxf6 Qb6+ 64.Qd4 Qxf6 65.Kf2 Ra3 66.h3 Rc3 67.Qxf6+ Kxf6 68.Rd5 Kg6 69.Rb5 Re3
=/+ (-0.38) Depth: 18/57 00:00:03 31534kN
55...f4
=/+ (-0.45 !) Depth: 19/57 00:00:04 38971kN
55...f4
=/+ (-0.60 !) Depth: 19/63 00:00:08 78296kN
55...f4 56.Qg1 Kg7 57.Qf2 Qf6 58.b5 Qe5 59.Nd3 Qe6 60.Ne1 Qxc4 61.Nf3 Qxb5 62.Nxd4 Qd5 63.Kg1 Qe4 64.Nc2 Rc3 65.Qd4+ Qxd4+ 66.Nxd4 h3 67.gxh3 Rxh3 68.Kg2 Ra3 69.Nf5+ Kg6
=/+ (-0.54) Depth: 19/63 00:00:09 86815kN


(Bram, Sommelsdijk 08.02.2014)