Pawnocchio 1.7.2 - new version chess engine

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Pawnocchio - UCI chess engine
Author: Jonathan Hallstrom 

v.1.7.2:
fixes two bugs related to multithreading, zero strength change.

v1.7.:
STC vs 1.6.1

Elo   | 51.98 +- 7.42 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 3010 W: 1086 L: 639 D: 1285
Penta | [18, 217, 652, 536, 82]
https://pyronomy.pythonanywhere.com/test/2891/

LTC vs 1.6.1

Elo   | 53.31 +- 5.52 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=128MB
Games | N: 4000 W: 1379 L: 770 D: 1851
Penta | [5, 239, 930, 794, 32]
https://pyronomy.pythonanywhere.com/test/2890/

STC 2v1 Thread odds

Elo   | 91.70 +- 12.07 (95%)
Conf  | 8.0+0.08s Threads=2 Hash=128MB
Games | N: 1004 W: 376 L: 117 D: 511
Penta | [4, 32, 195, 243, 28]
https://pyronomy.pythonanywhere.com/test/2901/

STC 4v1 Thread odds

Elo   | 158.69 +- 11.25 (95%)
Conf  | 8.0+0.08s Threads=4 Hash=128MB
Games | N: 1006 W: 485 L: 55 D: 466
Penta | [0, 6, 113, 332, 52]
https://pyronomy.pythonanywhere.com/test/2903/

New bigger net, SPSA tune, score normalization, and some minor search improvements. Also made an effort to make the engine scale better to more threads.

Pawnocchio 1.6.1 vs other engines:

Whitespine 1.3.04/4+44 Games
Obsidian 15.221/4-24 Games
Kobra 2.0 JA2/2+22 Games
Halcyon 1 JA2/2+22 Games
Spaghet BologNNese 1.1.3 JA2/2+22 Games
Critter 1.6a2/2+22 Games
RapCpw2/2+22 Games
Qapla 0.3.22/2+22 Games
Pluto 1.0.02/2+22 Games
Beast 3.1.02/2+22 Games
Feuerstein 0.4.6.1 JA1.5/2+12 Games
DarkSeid 5.91/2+02 Games
Astra 5.21/2+02 Games
Arasan 25.11/2+02 Games
Zangdar 4.011/2+02 Games
Horsie 1.1.01/2+02 Games
Patricia 4.0 JA1/2+02 Games
Artemis 14TR0.5/2-12 Games
Cool Iris v190.5/2-12 Games
Cool Iris v180.5/2-12 Games
Crystal 90.5/2-12 Games



Successes of the Pawnocchio engine in our tournaments:





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