Engine arena run: completed

Paired contrast slot 0 minus slot 1: -0.047 wins per game over 64 seeds (95% interval -0.149 to +0.055).

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

Full retained record and provenance

Run 1249d1a2-267b-40dc-bc65-fd2678080eef

Status: completed. Experiment: cb1392fe-746d-4396-8f00-9a6366f2f31f. 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...`	109	256	42.6%	36.7%–48.7%	7.33	729.8 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	121	256	47.3%	41.2%–53.4%	7.67	960.1 ms
2 / `eta`	12	256	4.7%	2.7%–8.0%	6.21	0.6 ms
3 / `fast`	14	256	5.5%	3.3%–9.0%	6.00	0.6 ms

Paired contrast slot 0 minus slot 1: -0.047 wins per game over 64 seeds (95% interval -0.149 to +0.055).

Manifest SHA-256: 7664ce925e5fd91d36c217868476fea76447be9fe1ef902bf3c6a64e55e39f0b. Inventory SHA-256: cb259e2e07955bdd287ddcb1334b0e0375a187f6097f3df018210ec4abbce149.

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.