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@vshcherbyna vshcherbyna released this 09 Apr 20:13
· 109 commits to master since this release
1.4.2
9214be5
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Learn about vigilant mode.

What's new:

  • Texel tunning using Zurichess test positions (725k) taken from http://www.zurichess.xyz/blog/texels-tuning-method/

  • Fixing a bug with evaluation of pair of the knights. The buggy code was evaluating the pair of black kings and the pair of white kings

  • IgelBench score: 1453

Strength compared to Igel 1.4.1 and other engines:

tc=40/960 (CCRL 40/40)
threads=1
hash=256
book=up to 12 moves for both engines
EGTB=3-4-5 piece

Rank Name                          Elo     +/-   Games   Score   Draws
   0 Igel 1.4.2 64 POPCNT         -219      33     450   22.1%   20.2%
   1 Arminius 2018-12-23           346     119      50   88.0%   20.0%
   2 Topple 0.5.0                  275      92      50   83.0%   30.0%
   3 Cheese 2.0 64 bits            241     117      50   80.0%   12.0%
   4 gogobello 2.0                 241     112      50   80.0%   16.0%
   5 RuyDos 1.1.9                  230     112      50   79.0%   14.0%
   6 Shield 2.1                    210     100      50   77.0%   22.0%
   7 Devel 2.0000                  200      97      50   76.0%   24.0%
   8 GreKo 2018.08                 173      96      50   73.0%   22.0%
   9 Fridolin 3.10                 108      90      50   65.0%   22.0%

Igel 1.4.2 64 POPCNT vs 1.4.1 64 POPCNT
tc=all/10+0.1
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece
Score of Igel 1.4.2 64 POPCNT vs Igel 1.4.1 64 POPCNT: 1656 - 1236 - 725 [0.558] 3617
Elo difference: 40.53 +/- 10.16

Igel 1.4.2 64 POPCNT vs 1.4.1 64 POPCNT
tc=all/60+0.6
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece
Score of Igel 1.4.2 64 POPCNT vs Igel 1.4.1 64 POPCNT: 1166 - 887 - 627 [0.552] 2680
Elo difference: 36.30 +/- 11.54

Igel 1.4.2 64 POPCNT vs Fruit 2.1
tc=all/60+0.6
threads=1
hash=256
book=up to 12 moves for both engines
EGTB=3-4-5 piece (only used by Igel since Fruit does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs Fruit 2.1: 18 - 16 - 18 [0.519] 52
Elo difference: 13.37 +/- 77.54

CCRL 40/4

Igel 1.4.2 64 POPCNT vs GreKo 2018
tc=40/96 (CCRL 40/4)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (only used by Igel since GreKo does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs GreKo 2018: 56 - 120 - 74 [0.372] 250
Elo difference: -90.97 +/- 36.94

Igel 1.4.2 64 POPCNT vs DanaSah 7.3
tc=40/96 (CCRL 40/4)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (only used by Igel since DanaSah does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs DanaSah 7.3: 109 - 73 - 68 [0.572] 250
Elo difference: 50.38 +/- 37.08

Igel 1.4.2 64 POPCNT vs WyldChess 1.51
tc=40/96 (CCRL 40/4)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece
Score of Igel 1.4.2 64 POPCNT vs WyldChess 1.51 64 POPCNT: 90 - 84 - 76 [0.512] 250
Elo difference: 8.34 +/- 36.01

Igel 1.4.2 64 POPCNT vs ECE-X3.5 64Bit
tc=40/96 (CCRL 40/4)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (only used by Igel since ECE does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs ECE-X3.5 64Bit: 82 - 118 - 50 [0.428] 250
Elo difference: -50.38 +/- 38.94

Igel 1.4.2 64 POPCNT vs K2 v.0.91
tc=40/96 (CCRL 40/4)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (only used by Igel since ECE does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs K2 v.0.91: 104 - 68 - 78 [0.572] 250
Elo difference: 50.38 +/- 36.01

Igel 1.4.2 64 POPCNT vs Fridolin 3.10
tc=40/96 (CCRL 40/4)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece
Score of Igel 1.4.2 64 POPCNT vs Fridolin 3.10: 91 - 86 - 73 [0.510] 250
Elo difference: 6.95 +/- 36.32

CCRL 40/40

Igel 1.4.2 64 POPCNT vs GreKo 2018.08
tc=40/960 (CCRL 40/40)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (used only by Igel, because Greko does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs GreKo 2018.08: 11 - 20 - 19 [0.410] 50
Elo difference: -63.23 +/- 77.57

Igel 1.4.2 64 POPCNT vs WyldChess 1.51 64 POPCNT
tc=40/960 (CCRL 40/40)
threads=1
hash=1024
book=up to 8 moves for both engines
EGTB=3-4-5 piece (used by Igel and WyldChess)
Score of Igel 1.4.2 64 POPCNT vs WyldChess: 15 - 18 - 17 [0.470] 50
Elo difference: -20.87 +/- 79.57

Igel 1.4.2 64 POPCNT vs ECE-X3.5 64
tc=40/960 (CCRL 40/40)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (used only by Igel, because ECE-X3.5 does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs ECE-X3.5 64Bit: 17 - 16 - 17 [0.510] 50
Elo difference: 6.95 +/- 79.49

Igel 1.4.2 64 POPCNT vs DanaSah 7.3
tc=40/960 (CCRL 40/40)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (used only by Igel, because DanaSah 7.3 does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs DanaSah 7.3: 20 - 16 - 14 [0.540] 50
Elo difference: 27.85 +/- 83.35

Igel 1.4.2 64 POPCNT vs K2 v.0.91
tc=40/960 (CCRL 40/40)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (used only by Igel, because K2 v.0.91 does not support EGTB)
Score of Igel 1.4.2 64 POPCNT vs K2 v.0.91: 17 - 19 - 14 [0.480] 50
Elo difference: -13.90 +/- 83.20

Igel 1.4.2 64 POPCNT vs Fridolin 3.00
tc=40/960 (CCRL 40/40)
threads=1
hash=1024
book=up to 12 moves for both engines
EGTB=3-4-5 piece (used by Igel and Fridolin)
Score of Igel 1.4.2 64 POPCNT vs Fridolin 3.10: 17 - 17 - 16 [0.500] 50
Elo difference: 0.00 +/- 80.72

Assets 3