Engine arena run: completed

Paired contrast slot 0 minus slot 1: -0.012 wins per game over 64 seeds (95% interval -0.097 to +0.073).

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

Full retained record and provenance

Run b3be0af1-94db-43ec-b9c7-73f3c04f4398

Status: completed. Experiment: bddfe32b-940f-4ea0-833f-2c0db3274a3c. 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...`	82	256	32.0%	26.6%–38.0%	6.98	532.9 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	85	256	33.2%	27.7%–39.2%	7.09	1042.4 ms
2 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	74	256	28.9%	23.7%–34.7%	6.67	557.4 ms
3 / `eta`	15	256	5.9%	3.6%–9.4%	6.17	0.5 ms

Paired contrast slot 0 minus slot 1: -0.012 wins per game over 64 seeds (95% interval -0.097 to +0.073).

Manifest SHA-256: 510de4030c521c4f703c7dafdf1329d76f86d967373439f956a4d4c4ad67f93c. Inventory SHA-256: 27d85359f8317bc20987f815700ab234f58dbff760cccb1e4492ef04719e3165.

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.