Calibrate settings for certain endgames

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peter
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Full name: Peter Martan

Re: Calibrate settings for certain endgames

Post by peter »

Nordlandia wrote:
The neat idea with h4/h3 maneuver is that black can choose to capture either e3 or g3 pawn.

Which pawn is the correct one to capture?


Both alternatives appear adequately enough to secure the draw, i can't identify any major differences. Still i prefer Bxe3 as the bad bishop (big pawn) capture towards the center as per rule of thumb.

[d]5k2/1p4p1/pP3p2/4p3/8/P3P1P1/3B1bK1/8 b - - 0 8

--------------------------------------------

I don't think, there is much difference neither, Jon.

5k2/pp4pp/4pp2/1P6/8/P2KP3/5PPb/2B5 w - - 0 30


30. g3 h5 31. Ke2 a6 32. b6 h4 33. Kf3 h3 34. Kg4 Bg1 35. Kxh3 Bxf2 36. Bd2 e5 37. Kg2 Bxe3

38. Bxe3 Kf7 39. a4 Ke6 40. g4 Kf7 41. Bd2 Ke6 42. Kf3 Kd5 43. Ke3 g6 44. a5 Ke6 45. Ke4 Kd6 46. Bb4+ Ke6 47. Ke3 f5 48. Kf3 g5 49. Bd2 e4+ 50. Kg3 fxg4 51. Kxg4 Ke7 52. Bxg5+ Ke8 53. Kf5 e3 54. Bxe3

and

30. g3 h5 31. Ke2 a6 32. b6 h4 33. Kf3 h3 34. Kg4 Bg1 35. Kxh3 Bxf2 36. Bd2 Ke7 37. Kg2 Bxg3

38. Kxg3 e5 39. a4 Ke6 40. Kg4 g6 41. a5 Kd5 42. Bb4 Ke6 43. Bc5 Kd5 44. Be7 Ke6 45. Bd8 f5+ 46. Kg5 f4 47. exf4 exf4 48. Kxf4 Kd5 49. Bf6 Kd6 50. Kg5 Kd7 51. Kxg6
Peter.
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Nordlandia
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Re: Calibrate settings for certain endgames

Post by Nordlandia »

Fortress detection close to zero.

[d]k7/1p6/pP1K4/P7/8/2B1B3/1B3B2/B1B3B1 w - - 0 17

New game
k7/1p6/pP1K4/P7/8/2B1B3/1B3B2/B1B3B1 w - - 0 1

Analysis by Stockfish 120616 64 BMI2:

17.Bb4 Kb8 18.Bf4 Ka8 19.Bbe5 Kb8 20.Bfd4 Ka8 21.Bab2 Kb8 22.Bgf2 Ka8 23.Bg5 Kb8 24.Bde3 Ka8 25.Bec5 Kb8 26.Kd5+ Ka8 27.Bg7 Kb8 28.Bgc3 Ka8 29.Kd6 Kb8 30.Be5 Ka8 31.Be7 Kb8 32.Beh4 Ka8 33.Bg7 Kb8 34.Bhg5 Ka8 35.B1e3 Kb8 36.Bge5 Ka8 37.Bef6 Kb8 38.Kd5 Ka8 39.Bg7 Kb8 40.Kd6 Kc8 41.Bec1 Kb8 42.Kd5 Ka8 43.Bge7 Kb8 44.Beh4 Ka8 45.Bg1 Kb8 46.Kd6 Ka8 47.Bgh6 Kb8 48.Ba1 Kc8 49.Bcf4 Kb8 50.Bcd4 Ka8 51.Bfe3 Kb8 52.Bed2 Kc8 53.Bc1 Kb8 54.Be5 Ka8 55.Bbc3 Kb8 56.Bed4 Kc8
+- (26.43) Depth: 53/80 00:00:38 1014MN, tb=1
(, 12.06.2016)
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Nordlandia
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Re: Calibrate settings for certain endgames

Post by Nordlandia »

How about positive contempt for Komodo if the lizard play the white pieces?

After 30. g3
peter
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Re: Calibrate settings for certain endgames

Post by peter »

To which aim?
The nearer to the drawn 7some- positions the wronger the White wins- eval gets anyhow even without an added contempt
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Nordlandia
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Re: Calibrate settings for certain endgames

Post by Nordlandia »

peter wrote:To which aim?
The nearer to the drawn 7some- positions the wronger the White wins- eval gets anyhow even without an added contempt
The idea was to discourage K to trade pieces and subsequently avoid draws in certain lines. For example 30. g3 30...Ke7 sub-line.

[d]8/pp4pp/4pp2/1P2k3/1B6/P2KP1P1/5P1b/8 w - - 0 4
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MikeB
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Re: Calibrate settings for certain endgames

Post by MikeB »

Nordlandia wrote:Is Komodo's default settings optimal for the following position?

[d]5k2/pp4pp/4pp2/1P6/8/P2KP1P1/5P1b/2B5 b - - 0 1

Perhaps some minor tweaks here and there make K10 perform well or better in that overanalyzed epic endgame.

Reduction = 50.
Contempt = 0
Dynamism = 80 or 100, (110)
Selectivity = 197 (+50%)
-----
Everything else default, - Some feedback will be appreciated.
I see no issues at tc 1 min/1 sec inc

[pgn][Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.06.14"]
[Round "-"]
[White "Komodo 10 64-bit"]
[Black "Stockfish 061116-01"]
[Result "1-0"]
[TimeControl "60+1"]
[FEN "5k2/pp4pp/4pp2/1P6/8/P2KP1P1/5P1b/2B5 b - - 0 1"]
[SetUp "1"]


1... Ke7 {-0.79/26 5} 2. Bd2 {+0.65/25 2.0} Kd6 {-0.79/23 2.0} 3. Bb4+
{+0.69/26 1.3} Ke5 {-0.68/26 0.9} 4. Ke2 {+0.66/29 4} Ke4 {-0.80/27 2.7} 5.
f3+ {+0.66/29 4} Kd5 {-0.66/28 2.7} 6. Kf2 {+0.69/27 0.8} Kc4
{-0.67/31 2.1} 7. b6 {+0.73/30 2.4} axb6 {-0.74/31 3} 8. Kg2 {+0.87/30 5}
Kd3 {-0.95/33 7} 9. Kxh2 {+0.90/30 1.7} Kxe3 {-0.91/33 1.2} 10. Kg2
{+0.91/30 2.2} b5 {-0.92/34 2.2} 11. Bf8 {+0.95/30 4} g6 {-1.08/29 0.5} 12.
Bg7 {+0.96/31 3} f5 {-1.08/36 2.4} 13. Be5 {+1.10/32 5} Kd2 {-1.08/34 2.0}
14. f4 {+0.99/30 2.8} Ke2 {-1.08/38 2.3} 15. Bd6 {+1.15/32 5} Kd2
{-1.09/36 2.6} 16. Kh3 {+1.18/31 2.1} Ke3 {-1.10/37 1.6} 17. Be5
{+1.19/32 2.7} Kf3 {-1.10/40 2.4} 18. Bd6 {+1.19/31 1.1} Ke3 {+0.00/56 0.9}
19. Bb4 {+1.19/33 6} Kd4 {-1.17/36 3} 20. Kh4 {+1.19/33 3} Ke4
{-1.24/33 0.3} 21. Bd6 {+0.98/30 2.5} Kf3 {-1.25/37 1.9} 22. Bf8
{+1.19/33 4} h5 {-1.37/30 0.3} 23. Kh3 {+1.34/35 8} Ke3 {-1.38/34 2.4} 24.
Kg2 {+1.47/31 0.9} Ke4 {-1.84/35 6} 25. Be7 {+1.57/32 2.0} Ke3
{-1.84/38 2.4} 26. Bd6 {+1.57/32 6} Ke4 {-1.98/37 2.5} 27. Bc7
{+1.58/31 1.2} Ke3 {-3.20/35 10} 28. Ba5 {+1.58/33 1.8} Kd4 {-4.01/33 5}
29. Kf3 {+1.59/32 1.2} Kd3 {-4.57/34 4} 30. Bb6 {+1.60/32 0.9} Kd2
{-4.78/35 2.6} 31. Ba5+ {+1.47/31 0.8} Kd3 {+0.00/69 0.9} 32. Bd8
{+1.48/28 0.3} Kd4 {-5.00/33 1.9} 33. Bc7 {+1.62/31 2.4} Kc4 {-5.01/35 1.2}
34. Bd6 {+1.72/31 1.5} Kd3 {-5.08/38 2.0} 35. Bb4 {+1.89/28 0.3} Kd4
{-5.08/37 2.2} 36. Ke2 {+1.96/31 1.7} Ke4 {-5.22/34 2.0} 37. Be7
{+1.96/29 0.5} Kd4 {-5.29/32 1.3} 38. Bb4 {+1.97/25 0.5} Ke4 {+0.00/48 0.5}
39. Bd2 {+1.98/31 2.3} Kd4 {-5.50/32 1.6} 40. Ba5 {+1.97/30 0.4} Ke4
{-5.74/30 1.0} 41. Bc7 {+1.97/31 0.8} Kd4 {-5.78/31 1.0} 42. Be5+
{+1.97/30 0.4} Kc4 {-3.54/28 0.6} 43. Ke3 {+1.97/32 0.8} Kd5 {-5.89/30 1.4}
44. Bc3 {+2.11/31 2.7} Kc4 {-6.37/27 1.0} 45. Ba5 {+2.50/26 0.5} Kb3
{-6.51/29 1.0} 46. Bb4 {+2.26/27 1.0} Kc4 {-6.50/30 0.2} 47. Ke2
{+2.32/26 0.3} Kd4 {-5.85/24 0.5} 48. Be7 {+2.16/30 2.3} Kc3 {-5.77/32 2.2}
49. Ke3 {+1.58/25 0.3} Kc4 {-6.53/29 1.1} 50. Bb4 {+1.59/27 0.4} b6
{-7.05/30 1.0} 51. Bd6 {+2.89/28 1.1} Kc3 {-7.31/30 1.0} 52. Bc7
{+2.98/28 0.5} Kc4 {-8.25/27 1.0} 53. Bxb6 {+4.61/27 1.3} Kd5
{-12.86/25 1.0} 54. Bd4 {+5.79/26 1.9} e5 {-14.88/25 1.0} 55. fxe5
{+6.86/26 1.6} g5 {-123.43/24 1.0} 56. Kf3 {+250.00/19 0.4} f4
{-123.45/28 1.0} 57. gxf4 {+250.00/26 0.5} g4+ {-123.46/33 0.6} 58. Kg3
{+250.00/27 0.5} Ke6 {-123.46/33 0.2} 59. Bf2 {+250.00/27 1.2} Kf5
{-123.47/34 0.8} 60. Kh4 {+250.00/28 1.1} Ke6 {-123.48/33 2.3} 61. Kxh5
{+250.00/28 2.1} g3 {-123.50/36 1.2} 62. Bxg3 {+250.00/28 0.2} Kd5
{-123.50/37 0.7} 63. Be1 {+250.00/31 1.0} Ke4 {-123.51/39 0.4} 64. a4
{+250.00/33 1.2} b4 {-123.52/38 1.0} 65. Bxb4 {+250.00/34 1.2} Kd5
{-1000.11/40 1.4} 66. a5 {+1000.12/15 0.1} Kc6 {-1000.09/46 0.7} 67. e6
{+1000.09/20 0.1} Kb5 {-1000.08/47 0.2} 68. e7 {+1000.08/22 0.1} Ka4
{-1000.07/57 0.8} 69. a6 {+1000.07/23 0.1} Kb5 {-1000.06/80 0.8} 70. a7
{+1000.06/26 0.1} Ka4 {-1000.05/127 0.8} 71. e8=Q+ {+1000.05/31 0.1} Kxb4
{-1000.04/127 0.1} 72. a8=Q {+1000.04/52 0.1} Kb3 {-1000.03/127 0.1} 73.
Qe3+ {+1000.03/99 0.1} Kc4 {-1000.02/127 0.1} 74. Qa4+ {+1000.02/99 0.1}
Kd5 {-1000.01/1 0.1} 75. Qe5# {+1000.01/99 0.1}
{White mates} 1-0
[/pgn]
peter
Posts: 3619
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Calibrate settings for certain endgames

Post by peter »

Nordlandia wrote: The idea was to discourage K to trade pieces and subsequently avoid draws in certain lines. For example 30. g3 30...Ke7 sub-line.
That would mean that either the position wasn't to be drawn with perfect play of both sides, (but it yet is remis to me) or komodo's opponent would miss the draw by blundering if there only was long enough chance enough to blunder
Peter.