Engine arena run: completed

Paired contrast slot 0 minus slot 1: +0.086 wins per game over 64 seeds (95% interval -0.011 to +0.183).

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

Full retained record and provenance

Run cd0eef08-680b-4639-9dba-8eb9e98ff79a

Status: completed. Experiment: 0f311f07-69b0-43a2-b00d-e65260e78c68. 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%	7.75	668.5 ms
1 / `v2:{"depth":2,"leaf":{"tables":"/home/keshav/settlers/res...`	105	256	41.0%	35.2%–47.1%	7.31	636.7 ms
2 / `eta`	16	256	6.2%	3.9%–9.9%	6.12	0.5 ms
3 / `fast`	8	256	3.1%	1.6%–6.0%	5.93	0.5 ms

Paired contrast slot 0 minus slot 1: +0.086 wins per game over 64 seeds (95% interval -0.011 to +0.183).

Manifest SHA-256: 2a3b257d1e2969dd1160635079be5b4e6f5bdb996b91e74af0f9b4063d65c3ae. Inventory SHA-256: 8f142141e49e9539318cefc4f06c478da065b379c32f25d0ebb125236318e851.

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.