Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.074 wins per game over 64 seeds (95% interval -0.026 to +0.174).

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

Full retained record and provenance

Run 4c417894-9fd2-4243-b477-c0750a5a86d0

Status: completed. Experiment: 1547ca49-dffd-4e2e-bd52-41934ae1180f. 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...`	99	256	38.7%	32.9%–44.8%	7.70	840.2 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	80	256	31.2%	25.9%–37.2%	7.29	820.9 ms
2 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	65	256	25.4%	20.4%–31.1%	6.80	615.5 ms
3 / `eta`	12	256	4.7%	2.7%–8.0%	6.34	0.5 ms

Paired contrast slot 0 minus slot 1: +0.074 wins per game over 64 seeds (95% interval -0.026 to +0.174).

Manifest SHA-256: 2eb08dc491e1eceefce6ffd375b5a0402c395bec3344438587622a8e68ce52b1. Inventory SHA-256: 287a8b401eb6393e072968dfcf024a761c8b7767b78f09dbb4ea5f24b69ab78f.

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.