Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.016 wins per game over 64 seeds (95% interval -0.074 to +0.106).

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

Full retained record and provenance

Run 88f22330-1c27-4be3-a7e3-2eb79f205c20

Status: completed. Experiment: a955b267-9ff0-40c1-82b7-4aa4edc9ff6e. 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%	7.54	933.9 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	112	256	43.8%	37.8%–49.9%	7.38	752.7 ms
2 / `eta`	19	256	7.4%	4.8%–11.3%	6.16	0.6 ms
3 / `fast`	9	256	3.5%	1.9%–6.5%	6.03	0.6 ms

Paired contrast slot 0 minus slot 1: +0.016 wins per game over 64 seeds (95% interval -0.074 to +0.106).

Manifest SHA-256: b8b0b8dc2e65565ddb9e85805030e7e0ec860f6c9c60280161463f1bd34fea3a. Inventory SHA-256: 7f8d1b73560151687fadc1f59e3db668782fd36877a578d73b379e2902e69558.

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.