Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.059 wins per game over 64 seeds (95% interval -0.056 to +0.173).

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

Full retained record and provenance

Run 1e9155d6-7a37-4f4a-92f2-d911b4cdaed0

Status: completed. Experiment: 91718fce-02e4-4248-a9e1-3e43bd76c118. 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%	7.72	614.4 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	111	256	43.4%	37.4%–49.5%	7.35	580.4 ms
2 / `eta`	15	256	5.9%	3.6%–9.4%	6.21	0.5 ms
3 / `fast`	4	256	1.6%	0.6%–3.9%	6.00	0.5 ms

Paired contrast slot 0 minus slot 1: +0.059 wins per game over 64 seeds (95% interval -0.056 to +0.173).

Manifest SHA-256: 19a911659de9933eec284a1ceb4a900c4c9332ec95a3945549527d3198dcf9dc. Inventory SHA-256: 23a00be55827055356969ec7333dc7776a172dfcebf98ee7f12c0debe0df2c7b.

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.