ResultRow-and-column n-tuple network trained by temporal-coherence TD on the Rust engine, screened as the leaf of the depth-3 seven-stratum fair search

Held-out screen, 256 never-read paired public-development games (0xa52f2140+): the frozen n-tuple tables as the leaf of the depth-3 seven-stratum fair search averaged 484,577 points and 140.21 moves against 314,438 points and 92.58 moves for the identical search with the frozen fair leaf: paired +170,139 points (bootstrap 95% lower bound +130,499, Student-t lower bound +130,560, upper bound +209,881, detection floor 39,440), W-T-L 167-0-89, halves +198,575 / +141,704, lower quartile 212,820 vs 175,832, moves +47.63. The preregistered gate PASSES. Against the program's standing reference, the fair leaf at depth 4 on the same seeds (377,803 points), the candidate is +106,775 paired (bootstrap LB +62,574, UB +151,706, W-T-L 160-0-96); diagnostic only. The same tables played directly one ply averaged 281,441 points, -32,997 paired against fair-d3s7 (LB -58,536); diagnostic. Fair-d4s7 minus fair-d3s7 on these seeds: +63,365 (LB +31,538). Candidate: the tables of the main run's validation point at 1,400,240,319 training moves (layout rows,cols,win23,win32,phase=all, alpha 1.0, selected from six pilot arms by the preregistered rule with a final validation margin of +123,950), whose paired margin on the 64-game training-role validation block was +270,023; SHA-256 0ade9d4e4080ebdd52a1474b1a13410dc8dfb77f5eba24b078aa7703c92ace0b. Main run: 4,000,004,271 training moves, 45,852,198 games, 20 validation points, mean 1,956,636 moves per second. Mechanism ablation (pilot, windows-only arm E): final validation margin -83,261 against the full layout's +95,051 (arm A) and +123,950 (arm C, selected). Training-signal check: at least one validation point of the main run had a positive paired margin.