Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.102 wins per game over 64 seeds (95% interval +0.009 to +0.195).

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

Full retained record and provenance

Run 623e109e-7040-43e6-b20b-3e371e17fccb

Status: completed. Experiment: 13fc34cb-16ff-41ca-a87e-7b212e0461d9. 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...`	128	256	50.0%	43.9%–56.1%	7.89	637.8 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	102	256	39.8%	34.0%–45.9%	7.02	658.9 ms
2 / `eta`	18	256	7.0%	4.5%–10.8%	6.09	0.5 ms
3 / `fast`	8	256	3.1%	1.6%–6.0%	6.00	0.5 ms

Paired contrast slot 0 minus slot 1: +0.102 wins per game over 64 seeds (95% interval +0.009 to +0.195).

Manifest SHA-256: 1e4545968207d65e46558cb911dfbd686cf2c264976f0ff23a2a5504519cdd56. Inventory SHA-256: 23edd7d6b39d32dad3146b4fbb48e9041648e989a0b5e7dbb693c2323b0efa1e.

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.