Engine arena run: completed

Paired contrast slot 0 minus slot 1: -0.117 wins per game over 64 seeds (95% interval -0.233 to -0.002).

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

Full retained record and provenance

Run 0d12835e-5262-4daf-9f2f-6a9b7288f2d6

Status: completed. Experiment: f2f21530-bf8d-400d-bfec-8614e6e0a607. 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...`	93	256	36.3%	30.7%–42.4%	8.11	894.7 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	123	256	48.0%	42.0%–54.2%	7.93	684.1 ms
2 / `eta`	20	256	7.8%	5.1%–11.8%	6.93	0.5 ms
3 / `fast`	20	256	7.8%	5.1%–11.8%	6.85	0.5 ms

Paired contrast slot 0 minus slot 1: -0.117 wins per game over 64 seeds (95% interval -0.233 to -0.002).

Manifest SHA-256: dfee616bafac6c852b060370a76e83155963f8369f5491917078283a36169d17. Inventory SHA-256: f960e14d4999700b2e9ccd9f90110b9186a4434aef022d23a96ba2355e80f9df.

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.