Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.074 wins per game over 64 seeds (95% interval -0.026 to +0.174).

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

Full retained record and provenance

Run c01c46b1-5822-4179-ab17-97faf8493bf4

Status: completed. Experiment: e222c91f-2724-4730-8f81-9a1198ca4e1f. 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...`	127	256	49.6%	43.5%–55.7%	7.82	730.5 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	108	256	42.2%	36.3%–48.3%	7.36	399.1 ms
2 / `eta`	8	256	3.1%	1.6%–6.0%	6.04	0.3 ms
3 / `fast`	13	256	5.1%	3.0%–8.5%	6.19	0.3 ms

Paired contrast slot 0 minus slot 1: +0.074 wins per game over 64 seeds (95% interval -0.026 to +0.174).

Manifest SHA-256: 59bd8c875d52c544dbc39ef8cf42308be97bbd40281a2d1ac6f98ef436377583. Inventory SHA-256: 9a5bf8683ef94185bb12cfcaa36d1d754e727bb65a2b84f1492cb2a047f9e94b.

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.