Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.066 wins per game over 64 seeds (95% interval -0.031 to +0.164).

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

Full retained record and provenance

Run f3175601-94fe-41d3-b52b-370cd0b10206

Status: completed. Experiment: 53427677-7c40-4575-a068-8f7f9b2b1321. 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...`	123	256	48.0%	42.0%–54.2%	7.63	678.4 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	106	256	41.4%	35.5%–47.5%	7.38	657.8 ms
2 / `eta`	18	256	7.0%	4.5%–10.8%	6.09	0.5 ms
3 / `fast`	9	256	3.5%	1.9%–6.5%	5.88	0.5 ms

Paired contrast slot 0 minus slot 1: +0.066 wins per game over 64 seeds (95% interval -0.031 to +0.164).

Manifest SHA-256: 236a9f96b9210894ee9e201f775d8df31e2724f6368f1ad84999ee8bb3be97b1. Inventory SHA-256: 2492e57b65aa7fac92aadc953423037e923f4312ebdf56d227cfde76bb285945.

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.