revolution 1.0.1 dev vs revolution 1.0 — SPRT Test Summary
Date: 31 August 2025 · Time control: 10+0.1 · Threads: 1 · Hash: 32 MB · Openings: UHO_2024_8mvs_+085_+094.pgn
We ran 1,792 games comparing Wordfish 1.0 dev against the baseline Wordfish 1.0. The development build scored 48.44% with an Elo difference of –10.9 ± 8.8 and a Likelihood of Superiority (LOS) of 0.79%. These figures indicate no Elo gain; in fact, a modest loss under the tested conditions.
Key numbers
- Games: 1,792
- Score: 48.44% (868.0 / 1,792)
- Elo: –10.9 ± 8.8
- nElo: –19.8 ± 16.1
- LOS: 0.79%
- Draw ratio: 49.9%
Conclusion
Under these conditions, Wordfish 1.0 dev is approximately 11 Elo weaker than the baseline Wordfish 1.0. The LOS well below 50% supports rejecting the change if Elo strength is the sole criterion.
Jorge Ruiz
connoisseur of both chess and anthropology, a combination that reflects his deep intellectual curiosity and passion for understanding both the art of strategic. Chess books