Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.141 wins per game over 64 seeds (95% interval +0.051 to +0.231).

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

Full retained record and provenance

Run 365eaca0-57c4-4cb9-807e-49e9cc5ec45c

Status: completed. Experiment: fcb9c657-4603-4985-948c-a6b54932ecee. 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%	7.86	664.5 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	96	256	37.5%	31.8%–43.6%	7.14	639.8 ms
2 / `eta`	15	256	5.9%	3.6%–9.4%	6.04	0.5 ms
3 / `fast`	13	256	5.1%	3.0%–8.5%	6.02	0.5 ms

Paired contrast slot 0 minus slot 1: +0.141 wins per game over 64 seeds (95% interval +0.051 to +0.231).

Manifest SHA-256: 342d9aad2f0820528116d52c10ef9fa41891b46ef43039b3ceb0a51a038e6508. Inventory SHA-256: 6dc5b20d0d780a86f8afcfd1dbc5a40c76015f07ddbf4ada6f1f162416db7322.

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.