New engine releases & news H2 2025

[Frank Quisinsky]

Pounce 2.1.3
https://github.com/0xflick/pounce
by Alex Flick, USA

Hint:
Minke 2.0.0 (newer 2.0.0 executables)
https://github.com/enfmarinho/Minke
by Eduardo Marinho, Brazil

[Jouni]

Clover surprised me. It displays current move in analysis! Many TOP engines don't: Obsidian, Reckless, Plentychess, LC0 . And Stockfish only after 10-30 seconds.

[jswaff]

Hi,

Prophet 5.1 - https://github.com/jswaff/prophet

chess4j 6.2 - https://github.com/jswaff/chess4j

Prophet 5.1 is 90+ elo stronger than 5.0, all due to improvements in the network architecture and training process.

More details here : https://jamesswafford.dev/

[Frank Quisinsky]

Crab 4.6.3
https://github.com/Beanie496/Crab/tags
https://github.com/Beanie496/Crab
by Jasper Shovelton, England

Compile by Günther Simon
RWBC: https://rwbc-chess.de/download.htm

Have a look also in his fantastic "Engines Chronology"
Clearly better as my own for TOP-175 only!!

Yellow Link
https://rwbc-chess.de/

[OliverBr]

OliThink 5.11.9(uci) released.
...
The engine itself is identical, therefore the version number has not been changed.

There has been an update for OliThink 5.11.9(uci) Windows executable:
The last OliThink-Windows-builds have an issue with the input (fgets). It is an issue related to the build itself, not the code.
Thankfully Jim Ablett made an Windows build without the issue:

https://github.com/olithink/OliThink/bl ... kWin64.exe
http://brausch.org/home/chess/OliThink5.11.9.uci2.zip

[op12no2]

Cwtch 1 - https://github.com/op12no2/cwtch

Cwtch is a C rewrite of Lozza.

[Frank Quisinsky]

01. Lambergar 1.3
https://github.com/jabolcni/Lambergar
by Janez Podobnik, Slovenia

02. bitbit 1.5
https://github.com/spinojara/bitbit
by Isak Ellmer, Sweden

[alex67a]

it's totally impossible compile last source of Reckless...

[Frank Quisinsky]

1. Zangdar 5
https://github.com/Carbecq/Zangdar
by Philippe CHEVALIER, France

2. Anubis 3.04
https://github.com/Lacovipo/Anubis-chess-engine
by José Carlos Martínez Galán, Spain

My own overview for TOP-175
https://www.amateurschach.de/main/_engines.htm

[bctboi23]

CeeChess v2.0
New handrolled SPSA tuning + AdaBelief, working bitboard implementaion, much better evaluation. Next steps are rewriting the search, and refactoring the move generation and bitboard representation. Also fixed bug where engine would play illegal move when game was more than ~150 moves.
Release: https://github.com/bctboi23/CeeChess/releases/tag/v2.0

Code: Select all

Results of 2.0 vs 1.4 (60+0.6, NULL, 16MB, chess.epd):
Elo: 174.55 +/- 13.35, nElo: 234.55 +/- 15.23
LOS: 100.00 %, DrawRatio: 23.80 %, PairsRatio: 8.65
Games: 2000, Wins: 1188, Losses: 260, Draws: 552, Points: 1464.0 (73.20 %)
Ptnml(0-2): [12, 67, 238, 347, 336], WL/DD Ratio: 2.45