http://www.talkchess.com/forum/viewtopi ... =0&t=63763

I separated the suites in ones distorting the openings of Standard Chess (and they have higher sensitivity here), and those playing reasonable openings. The important thing to look here is the t-value (sensitivity) of the difference, and the better indicator is "Normalized ELO" t-value, and not "ELO" t-value.

"Normalized ELO" is proposed recently by Michel Van den Bergh here:

http://talkchess.com/forum/viewtopic.ph ... t&start=20

Here are the results:

**Opening suites which distort the opening phase**

Code: Select all

```
Chess960.epd
Score of K2 vs K1: 1172 - 119 - 709 [0.763] 2000
ELO difference: 203.35 +/- 12.78
t-value = 15.9
Normalized ELO difference: 0.868
t-value = 19.8
2moves_v1.epd
Score of K2 vs K1: 1164 - 144 - 692 [0.755] 2000
ELO difference: 195.51 +/- 12.91
t-value = 15.1
Normalized ELO difference: 0.813
t-value = 18.6
```

**Opening suites with reasonable openings**

Code: Select all

```
3moves_GM.epd
Score of K2 vs K1: 1085 - 126 - 789 [0.740] 2000
ELO difference: 181.48 +/- 12.11
t-value = 15.0
Normalized ELO difference: 0.782
t-value = 17.8
8moves_v3.pgn
Score of K2 vs K1: 1013 - 113 - 874 [0.725] 2000
ELO difference: 168.40 +/- 11.45
t-value = 14.7
Normalized ELO difference: 0.749
t-value = 17.1
8moves_GM.pgn
Score of K2 vs K1: 1002 - 137 - 861 [0.716] 2000
ELO difference: 160.85 +/- 11.57
t-value = 13.9
Normalized ELO difference: 0.699
t-value = 15.9
```