Emerald - UCI chess engine
Author: Zhongle Qu
Emerald 0.4.1 - what's new?
This update does not include significant search or evaluation changes (<10 Elo change)
Updates:
Support UCI command go nodes
Shorten PV output after three-fold repetition (and makes fast-chess happier)
Move right away if there is an only legal move (enabled automatically only in competition mode)
Support Hash option (default 16, max up to 2048)
Now shows time, nodes per second and hash full information in output
Added verification search for NMP
Small tweaks to LMR and move ordering
Emerald 0.4.0 vs other engines:
| Critter 1.6a | 0/8 | -8 | 8 Games |
| Minke 1.0.0 | 0/6 | -6 | 6 Games |
| Cataphract 1.1 | 0/6 | -6 | 6 Games |
| Mcu-max 1.0.6 | 4/4 | +4 | 4 Games |
| Belofte 2.1.9 (u) JA | 4/4 | +4 | 4 Games |
| Colossus 2025b | 1.5/4 | -1 | 4 Games |
| Tomcat 1.0 JA | 1/4 | -2 | 4 Games |
| Potential 3.0.0 | 0.5/4 | -3 | 4 Games |
| DanaSah 9.1 JA | 0.5/4 | -3 | 4 Games |
| Knightx 4.5 | 0/4 | -4 | 4 Games |
| EveAnn 3.4 | 0/4 | -4 | 4 Games |
| Viridithas 18.0.0 | 0/4 | -4 | 4 Games |
| Fire 10 mingw | 0/4 | -4 | 4 Games |
| Astra 6.1.1 | 0/4 | -4 | 4 Games |
| Lynx 1.10.0 | 0/4 | -4 | 4 Games |
| Caissa 1.23 | 0/4 | -4 | 4 Games |
| Cinder 0.3.1 | 0/4 | -4 | 4 Games |
| Tarnished 4.0 | 0/4 | -4 | 4 Games |
| Pawnocchio 1.8.1 | 0/4 | -4 | 4 Games |
| Stash 37.10 JA | 0/4 | -4 | 4 Games |
| Benbot 1.4.4 | 2/2 | +2 | 2 Games |
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