Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.137 wins per game over 64 seeds (95% interval +0.040 to +0.234).

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

Full retained record and provenance

Run 7c07bce7-df9f-4bfb-b95c-73f1cc1a0f54

Status: completed. Experiment: e8ed1b4d-9b55-41c0-b81a-72ca3446a6f0. 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...`	130	256	50.8%	44.7%–56.8%	7.78	611.4 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	95	256	37.1%	31.4%–43.2%	7.13	605.0 ms
2 / `eta`	17	256	6.6%	4.2%–10.4%	6.10	0.5 ms
3 / `fast`	14	256	5.5%	3.3%–9.0%	5.98	0.5 ms

Paired contrast slot 0 minus slot 1: +0.137 wins per game over 64 seeds (95% interval +0.040 to +0.234).

Manifest SHA-256: b333006d5ebae71d9ef06998740f9b891fc055e8c9af90fd35a83e32e3a15d62. Inventory SHA-256: 201b7d8ee0a6c07f74fa274ba17e2f5e7f94364e07d7287440aed57c30de408f.

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.