Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.125 wins per game over 64 seeds (95% interval +0.015 to +0.235).

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

Full retained record and provenance

Run e5648fda-d914-46c8-99dd-c2871af55225

Status: completed. Experiment: 95b0122b-407f-4210-94b8-c1ba0a4e508d. 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...`	132	256	51.6%	45.5%–57.6%	7.77	573.3 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	100	256	39.1%	33.3%–45.2%	7.29	550.2 ms
2 / `eta`	15	256	5.9%	3.6%–9.4%	6.09	0.4 ms
3 / `fast`	9	256	3.5%	1.9%–6.5%	6.05	0.4 ms

Paired contrast slot 0 minus slot 1: +0.125 wins per game over 64 seeds (95% interval +0.015 to +0.235).

Manifest SHA-256: d5f6fb827c83e6c933d8c5bce3d68af6e61a88ddf9849d2bab6ad7a09cb3dadd. Inventory SHA-256: 5822d32ed31b7291ef30d78dbe855d5a206ee876e206331f9a168f684d853651.

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.