Chess Aesthetics Lab

Explore how Iqbal’s three models score a chess composition.

Aesthetic score

Score breakdown

Feature	Value

Solution tree index

An experimental 0–1 index across all defenses to the key move, calculated separately from the selected model’s line score.

Feature guide · P1–P7 and T1–T10

Scoring method, source code, and references

The app uses full precision for intermediate calculations. The Loyd example scores 6.675 in the 2008 model. The thesis reports 6.674 using three-decimal rounding at intermediate steps.

The 2010 and 2012 results are expected values from this implementation’s top-k aggregation. The 2012 model scores the main line.

Source code: scoring engine, web adapter, interface, and worker. Scoring engine SHA-256 5acf94bb654b30c0de648552e89e79471d213a3821cd146ff2898d054f478744.

Iqbal (2008). A Discrete Computational Aesthetics Model for a Zero-Sum Perfect Information Game. Doctoral thesis.
Iqbal (2010). Aesthetics in Mate-in-3 Combinations, Part II: Normality.
Iqbal et al. (2012). Evaluating the Aesthetics of Endgame Studies: A Computational Model of Human Aesthetic Perception.