Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.004 wins per game over 64 seeds (95% interval -0.115 to +0.123).

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

Full retained record and provenance

Run 8d3680d8-d891-41be-a3e1-ca1ec203e7b2

Status: completed. Experiment: 4915a44c-ca93-45cf-86f3-31e11c282d42. 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...`	116	256	45.3%	39.3%–51.4%	8.03	779.9 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	115	256	44.9%	38.9%–51.0%	7.98	830.2 ms
2 / `eta`	15	256	5.9%	3.6%–9.4%	6.47	0.4 ms
3 / `fast`	10	256	3.9%	2.1%–7.0%	6.39	0.4 ms

Paired contrast slot 0 minus slot 1: +0.004 wins per game over 64 seeds (95% interval -0.115 to +0.123).

Manifest SHA-256: 46c57e660fc51a1f4a4fe0adb0212b4a8a5d329bb4f12b9aa24f5e9ae4c448ea. Inventory SHA-256: 276ba2db4f4d21e2dd9ee3d55b14eb969907d52cab8eab1fa21a63c347f89090.

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.