Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.121 wins per game over 64 seeds (95% interval +0.021 to +0.221).

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

Full retained record and provenance

Run b0c63544-f1ba-4a4c-924d-03ef381c4dbb

Status: completed. Experiment: ad623e9c-d09c-4328-8f90-868cc0cc719c. 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%	8.29	580.8 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	99	256	38.7%	32.9%–44.8%	7.70	1137.8 ms
2 / `eta`	14	256	5.5%	3.3%–9.0%	6.45	0.3 ms
3 / `fast`	13	256	5.1%	3.0%–8.5%	6.36	0.3 ms

Paired contrast slot 0 minus slot 1: +0.121 wins per game over 64 seeds (95% interval +0.021 to +0.221).

Manifest SHA-256: 8adc6e40f1652802d5b3433a6bd51d5c8cfa5b1e6b47e43945f5d7606cf2ebee. Inventory SHA-256: ab25928e449a0028a4f946f8ceb8dee813325b1ba82b96680dd2eb5a0f991b1e.

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.