Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.035 wins per game over 64 seeds (95% interval -0.066 to +0.136).

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

Full retained record and provenance

Run 30180b9b-3de5-46d8-ae0e-30e259e21c4d

Status: completed. Experiment: 4d8b27cc-edc5-483b-94e6-f543e97eca5b. 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...`	116	256	45.3%	39.3%–51.4%	7.59	737.3 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	107	256	41.8%	35.9%–47.9%	7.38	759.5 ms
2 / `eta`	23	256	9.0%	6.1%–13.1%	6.25	0.6 ms
3 / `fast`	10	256	3.9%	2.1%–7.0%	6.10	0.6 ms

Paired contrast slot 0 minus slot 1: +0.035 wins per game over 64 seeds (95% interval -0.066 to +0.136).

Manifest SHA-256: 966f8b5db298df95bc696c4889cee409ef5a4d111214686187bd3b20ae9e5755. Inventory SHA-256: c57de037a72456dd5c7ee210426f0ddb18c7f9168801a25a83a5e61771e24094.

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.