Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.105 wins per game over 64 seeds (95% interval +0.014 to +0.197).

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

Full retained record and provenance

Run 86136b36-66e2-49a8-aa95-e5de0d802e61

Status: completed. Experiment: b8549250-edc9-4f21-a4b7-96fbaafd4782. 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...`	126	256	49.2%	43.2%–55.3%	7.69	768.3 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	99	256	38.7%	32.9%–44.8%	7.25	859.7 ms
2 / `eta`	19	256	7.4%	4.8%–11.3%	6.11	0.6 ms
3 / `fast`	12	256	4.7%	2.7%–8.0%	6.01	0.6 ms

Paired contrast slot 0 minus slot 1: +0.105 wins per game over 64 seeds (95% interval +0.014 to +0.197).

Manifest SHA-256: 74d99b986b62e05728536f83d3e2b060942f9e9367f1e1c57a3ddecdc56f7aad. Inventory SHA-256: 984973df63ccf677027c1d14c025f7fafaa1018d2915399ffb6322e5c7e63352.

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.