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 5.0 what's new?
New eval network (NN). 520 million positions from
CCRL games, labelled with WDL/Material Score/Self SCore
Quality of play is better and ELO increment estimated is +25
Caligula 3.0 vs other engines:
| Caissa 1.24 JA | 2/10 | -6 | 10 games |
| Critter 1.6a | 3/8 | -2 | 8 games |
| Knightx 4.7 | 4/5 | +3 | 5 games |
| Gyatso 1.0.0 | 4/4 | +4 | 4 games |
| Grail 1.0.0 | 3.5/4 | +3 | 4 games |
| Revolver 1.0 JA | 3/4 | +2 | 4 games |
| Prune 3.0.0 | 2/4 | +0 | 4 games |
| Deep Shredder 13 | 1.5/4 | -1 | 4 games |
| Senpai 3.0.2 | 1.5/4 | -1 | 4 games |
| Quirky 2.1 JA | 1.5/4 | -1 | 4 games |
| Myrddin 0.94 | 1/4 | -2 | 4 games |
| Reckless 0.9.0-dev-c5af2cea | 1/4 | -2 | 4 games |
| Sturddle 2.4.0 | 1/4 | -2 | 4 games |
| Demolito 2025-12-16 | 1/4 | -2 | 4 games |
| Halogen 15.30.1 | 1/4 | -2 | 4 games |
| Cwtch 4 | 1/4 | -2 | 4 games |
| Grail 1.0.1 | 1/4 | -2 | 4 games |
| C4ke 2.0 | 0.5/4 | -3 | 4 games |
| Eleanor 3.0 | 0.5/4 | -3 | 4 games |
| Prelude 2.1 | 0.5/4 | -3 | 4 games |
| CorChess 20251130 | 0/4 | -4 | 4 games |
Author: Pedro Castro, Rating Chess Engines Diary CEDR=2761
Jim Ablett compiles:
Caligula 5.0 - download
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