Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.074 wins per game over 64 seeds (95% interval -0.039 to +0.187).

Planned: 256
Attempted: 256
Completed: 256
Incomplete: 0
Unplayed: 0

Full retained record and provenance

Run ffc247e0-2b08-446f-9052-de608430f6e5

Status: completed. Experiment: da65be79-63a4-4608-b017-77c513bbae2a. Tier: engine arena (paired seeds, deterministic tapes).

Planned: 256. Attempted: 256. Completed: 256. Incomplete: 0. Unplayed: 0.

Slot / seat	Wins	Completed	Win rate	95% Wilson interval	Mean points	Mean decision
0 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	122	256	47.7%	41.6%–53.8%	7.72	67.6 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	103	256	40.2%	34.4%–46.3%	7.28	66.6 ms
2 / `eta`	17	256	6.6%	4.2%–10.4%	6.12	0.1 ms
3 / `fast`	14	256	5.5%	3.3%–9.0%	6.21	0.1 ms

Paired contrast slot 0 minus slot 1: +0.074 wins per game over 64 seeds (95% interval -0.039 to +0.187).

Manifest SHA-256: 0f504e977d2a1738bfd2d0e1fbbd75cd56cf142c8d0f7178d8eb6101fb204bbb. Inventory SHA-256: 89364be21037bd867436de20b18a0ea2d17d2711caa6e4d02c2838d1baece663.

Games were played offline by the engine arena with explicit seeds; every seed was played once per lineup rotation. Seats received only their own redacted observation and participant events. This tier supports development and diagnosis; it is not a protocol-arena confirmation.