Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.145 wins per game over 64 seeds (95% interval +0.038 to +0.251).

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

Full retained record and provenance

Run 9e11f6ff-3e1a-4000-9f4c-73fdb3e4de1d

Status: completed. Experiment: b5d23033-a6de-4324-8bae-8791679bd018. 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...`	131	256	51.2%	45.1%–57.2%	7.88	66.4 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	94	256	36.7%	31.1%–42.8%	7.16	65.2 ms
2 / `eta`	15	256	5.9%	3.6%–9.4%	6.15	0.1 ms
3 / `fast`	16	256	6.2%	3.9%–9.9%	6.12	0.1 ms

Paired contrast slot 0 minus slot 1: +0.145 wins per game over 64 seeds (95% interval +0.038 to +0.251).

Manifest SHA-256: 66505018728a0737df6c5bd4b86113dfbc2c18722ed60568d0d4ba7d61d06a6c. Inventory SHA-256: 2dcdabdc1fb8dcb3bcf72ddeceb44df4f09e455c96c74e69a24fc32191aacfd8.

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.