--- license: cc-by-4.0 tags: - synthetic - optimization - benchmark --- # Douvras Evolution Lab Constructions v0.1 Small, synthetic benchmark for the loop **candidate → verifier → score**. Each problem is an eight-node cycle independent-set toy problem. The verifier checks node range, uniqueness and absence of selected edges. The published `best_known_score` is 3; a valid score of 4 is marked `IMPROVED` for this toy family. The dataset contains 54 records (36 train, 9 validation, 9 frozen test) across six relabeled problem instances. Splitting is by `problem_id`, so candidates from one instance cannot cross train/validation/test. All records are synthetic and generated locally; no upstream AlphaEvolve notebook or data is included. This release demonstrates evaluator plumbing, not a new mathematical result. The graph family is intentionally solved by exhaustive reasoning and the construction is not evidence of novelty outside this toy benchmark.