NoraGrace 2.0 (c# engine)

[eric.oldre]

NoraGrace version 2.0 is now available at:

https://github.com/ericoldre/NoraGrace-Chess/releases

It should see a pretty significant bump in playing strength from version 1.0. I'm guessing minimum 200 elo.

There are too many changes to go over each individually, and quite frankly I could never remember them all. But in general the biggest strength games seemed to come from:
- More aggressive late move reductions.
- Adding late move pruning.
- Eval tuning using something similar to the texel method (really this was the big one, even though some of the values it produced seem out of whack with my thinking)

Here are some results running very fast time controls. (0:30 + 0.1) Against some of these engines it performs better at longer controls, and against some worse.

Program Elo + - Games Score Av.Op. Draws

1 Ruffian : 2500 40 40 250 57.8 % 2446 15.6 %
2 Djinn : 2459 38 37 250 52.0 % 2446 24.8 %
3 Movei 438 : 2446 39 39 250 50.0 % 2446 18.4 %
4 Slow Chess Blitz : 2443 39 39 250 49.6 % 2446 16.8 %
5 NoraGrace 20141111 : 2439 13 13 2500 60.1 % 2368 15.5 %
6 Pupsi : 2430 39 39 250 47.8 % 2446 18.8 %
7 AnMon 5.75 : 2425 40 40 250 47.0 % 2446 13.2 %
8 Hermann 2.8 : 2378 41 41 250 40.4 % 2446 13.6 %
9 Counter_12 : 2236 45 46 250 23.0 % 2446 16.4 %
10 Sungorus 1.4 : 2191 50 51 250 18.8 % 2446 10.4 %
11 Horizon 4.4 : 2103 59 62 250 12.2 % 2446 6.8 %

[SzG]

Thanks, Eric. Nice improvement.

Version number is displayed as 1.0 though.

[eric.oldre]

Thanks for noticing that Gabor, I've updated the binaries on Github so the ones up there now should report v2.0

[Graham Banks]

NoraGrace version 2.0 is now available at:

https://github.com/ericoldre/NoraGrace-Chess/releases

It should see a pretty significant bump in playing strength from version 1.0. I'm guessing minimum 200 elo.

Thanks Eric. Sounds good!