Candidate-order sensitivityTerminal data
E025
The shuffle moved. The signal did not.
Across 48 positions and 192 registered calls, changing candidate order produced 42.7% disagreement; identical-order baselines were 39.6% and 35.4%.
Adjusted excess+5.2 ppThe terminal aggregate is not clearly supported as a non-zero effect.
95% interval-2.1 pp to +13.5 ppRandomizationp=0.191Registered cells192 Claim boundary. Action stability for one dated Luna alias cohort on development-exposed Black positions; not move quality, Elo, search, or a universal null.
not clearly supported interval includes zeroOpen E025 → Prompt guidanceTerminal data
E028
The prompt pulled.
Across 48 paired positions, visible fixed-set membership was 95.8% versus 2.1% in the board-only arm.
Paired effect+93.8 ppMembership in the supplied set, not move quality or chess strength.
95% interval+88.5 pp to +97.9 ppRandomizationp=0.00001Missing cells0 Claim boundary. Development-only causal effect of showing one fixed five-move suggestion set on Luna set adherence; no move-quality, Elo, vision, search, or candidate-generation claim.
Exact tablebase adviceTerminal data
E029
Two exact moves. A qualified local gain.
Across 60 complete paired positions, exact-top-two advice changed mean 50-move-rule utility from 42.5% to 49.6%.
Paired utility effect+7.08 pppositive confirmatory; the analyzer qualification remains public.
95% interval+2.92 pp to +11.67 ppSign-flipp=0.00324Complete positions60/60 Claim boundary. A local causal effect of displaying two unranked exact-policy moves on exact 50-move-rule move utility for this cohort; no full-game transfer, Elo, learning, vision, search, or general chess-strength claim.
The registered statistics and decision rule classify this cohort as positive, but the executable analyzer was completed after terminal data and was not hash-bound before collection.Open E029 → Engine scaffold / paired puzzle survivalTerminal data
A113
Two unranked moves. A local survival effect.
Across 319 complete pairs from 320 source puzzles and 640 scheduled episodes, the fixed-budget Stockfish scaffold changed complete-episode survival by +11.6 pp for the same Luna model.
Paired survival effect+11.6 ppModel-plus-harness protocol effect; not model-only learning or Elo.
95% interval+7.52 pp to +15.99 ppComplete pairs319/320Missingness sensitivity+11.56 pp to +11.88 pp Claim boundary. A positive paired engine-scaffold effect on registered puzzle-decision survival for this Luna cohort; no learning, Elo, unassisted-strength, or general agentic-chess claim.
Terminal content-addressed aggregate; publication withheld.Open A113 →