Engine arena run: completed
Paired contrast slot 0 minus slot 1: +0.168 wins per game over 64 seeds (95% interval +0.073 to +0.263).
- Planned
- 256
- Attempted
- 256
- Completed
- 256
- Incomplete
- 0
- Unplayed
- 0
Full retained record and provenance
Run b5090959-bd26-4926-a9a6-bff17b9c5a87
Status: completed. Experiment: 21b4a965-c6f1-4e38-83aa-ecacd3187ecd. 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,"endgame":{"block_leader":true}} | 127 | 256 | 49.6% | 43.5%–55.7% | 8.25 | 259.9 ms |
1 / v2:{"depth":2} | 84 | 256 | 32.8% | 27.4%–38.8% | 7.42 | 242.3 ms |
2 / eta | 25 | 256 | 9.8% | 6.7%–14.0% | 6.76 | 0.3 ms |
3 / fast | 20 | 256 | 7.8% | 5.1%–11.8% | 6.36 | 0.3 ms |
Paired contrast slot 0 minus slot 1: +0.168 wins per game over 64 seeds (95% interval +0.073 to +0.263).
Manifest SHA-256: 333da2496b4f96d9b03d1883250157c36cb6264b205814ca075d0d98ad9c1275. Inventory SHA-256: 7bd2ab1a0a81a47938066d141d58d69fb085e40da7b6c26ddb4f01ae839e4d43.
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.