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PZChessBot 5.0 - new version chess engine

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PZChessBot is a basic negamax engine.
Author: Kevin Lu 

v.5.0 What's Changed

This new version mainly features a full re-train of the NNUE from scratch again, with some small bugfixes (notably a ~30% speedup on Windows systems).

+120 Elo @ STC
+90 Elo @ LTC

Estimated CCRL Blitz: 3570 | 40/15: 3480

What's Changed
Fix genfens functionality; begin retraining NNUE by @kevlu8 in #163
Add 64HL net by @kevlu8 in #164
Add output buckets by @kevlu8 in #165
Add 128HL network by @kevlu8 in #166
Add HM by @kevlu8 in #167
Add HL128 network by @kevlu8 in #168
Add HL512 network by @kevlu8 in #169
Add tt-corrected eval by @kevlu8 in #170
Fix mate handling and add MDP by @kevlu8 in #171
Add HL1024 net by @kevlu8 in #172
Add double extensions by @kevlu8 in #174
Add proper CI by @kevlu8 in #175
Lower HP margin by @kevlu8 in #176
Lower RFP threshold by @kevlu8 in #177
Always penalize bad captures by @kevlu8 in #178

PzChessBot 2.0 vs other engines:

Emerald 0.3.02/2+22 Partii
Ironfang 1.02/2+22 Partii
Fridolin 4.00 JA2/2+22 Partii
Freda 1.12/2+22 Partii
Libra-chess 1.0.12/2+22 Partii
Kraken 2025-06-161.5/2+12 Partii
Maelstrom 2.1.01.5/2+12 Partii
Lunar 0.2.11/2+02 Partii
Halogen 130.5/2-12 Partii
Zangdar 4.04 JA0.5/2-12 Partii
Celeris 1.00/2-22 Partii
Fire 100/2-22 Partii
Stormphrax 7.0.00/2-22 Partii
Zangdar 4.040/2-22 Partii
Aku 2025.6.12 JA0/2-22 Partii
PlentyChess 6.0.5 JA0/2-22 Partii
Fire 9.3 JA0/2-22 Partii


PZChessBot 5.0 download   more: https://github.com/kevlu8/PZChessBot/releases/tag/v5.0

Successes of the PZChessBot engine in our tournaments:



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