Caligula 8.0 - new version chess engine

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Caligula is a freeware winboard compatible chess engine based in TSCP.
Caligula use by default 256 Mb for hash. You can change hash with command line.

Caligula, a chess program by successor of Toledo 2000. Caligula played a strong 6th Spanish Open Computer Chess Championship 1999 and became Spanish Champion and runner-up behind Chess Tiger, winning from Tiger [2] and Diep, but losing from its countrymen programs Eugen and Ruy Lopez. (source)

Caligula - what's new?
- NEW: full UCI protocol support (previous versions were Winboard-only). Caligula now works with any UCI-capable GUI (Myracle GUI, Arena, BanksiaGUI, Cutechess, Fritz, Shredder, Chess for Android, etc.) in addition to Winboard.
- NEW: strength levels, calibrated against Stockfish 17.1:
- UCI_Elo (750-3200), with FIDE/CCRL scale selection.
- Skill Level (0-100, 100 = full strength).
- 13 Random Easy Levels, from "Random_Move" to "Magnus_Carlsen_2882".
- New NNUE evaluation network (750-s_eval-65).
- Search improvements: verified razoring, re-tuned RFP / null move /   SEE-pruning / LMR, principal variation rebuilt from the hash table.
- New Android OEX engine package (APK) with ARM64 dot-product support and x86_64 for emulators.
- Several bug fixes (see the "changes" document in docs/ for programmers).

Caligula 7.0 vs other engines:

Pedantic 2.1.03/5+15 games
Frozenight 7.0.0 JA2.5/4+14 games
Critter 1.6a2.5/4+14 games
Odonata 1.1.02/4+04 games
Zahak 10 JA2/4+04 games
Weiss 2.1 JA1.5/4-14 games
Defenchess 2.3 JA2.5/3+23 games
Xiphos 0.6.1 JA2.5/3+23 games
Shadow 0.32/3+13 games
Counter 5.52/3+13 games
RukChess 4.2.0 JA1.5/3+03 games
Drofa 4.1.1 JA1.5/3+03 games
Nalwald ab11891 JA1/3-13 games
Jackal 2.0.01/3-13 games
Chessnix 1.40.5/3-23 games
Perseus 1.1 JA2/2+22 games
Midnight 9 JA1.5/2+12 games
Myrddin 0.96 JA1/2+02 games
Vajolet2 3.2.01/2+02 games
Sturddle 2.5.01/2+02 games
Weiawaga 6.0.01/2+02 games


 Author: Pedro Castro, Rating Chess Engines Diary CEDR=3416

Caligula 8.0 - download   mirror
Caligula homepage: https://sites.google.com/view/dirtychess/dirtychess

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