Record bd1474df7c684979ba9eceb72dde6386

FAIL

Verdict and provenance first; raw prompt/response/reasoning below, collapsed.

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✕FAILanswered "unknown" · model gpt-oss-120b

finish_reason: stop · tokens in/out: 712/345 · cost: $0.000314 · latency: 8630.8 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: bd1474df

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Why did it fail? Nemotron 3 Ultra · live on Nebius Token Factory

Ultra reads the prompt, this answer, the verified correct answer and the difficulty settings, then explains the mistake. The verifier's own classification is shown next to it for comparison.

Prompt 2,265 chars · 712 tokens in

At 8:19, Priya moved the worn folder into the west wing. At 8:20, Jamal carried the worn folder to the boiler room. At 8:21, Marcus carried the worn folder to the garage. At 8:22, Piers brought the worn folder over to the east wing. At 8:23, Hakim took the worn folder and placed it in the server room. At 8:24, Jamal moved the worn folder into the gym. At 8:25, Hakim took the worn folder and placed it in the photo studio. At 8:26, Marcus brought the worn folder over to the boiler room. At 8:27, Priya moved the worn folder into the supply closet. At 8:28, Hakim brought the worn folder over to the garage. At 8:29, he brought the worn folder over to the east wing. At 8:30, Lena reorganized some papers on the desk. At 8:31, he refilled a cup of coffee. At 8:32, he checked their email. At 8:33, Piers checked their email. At 8:34, Jamal reorganized some papers on the desk. At 8:35, Marcus made a quick phone call. At 8:36, Dexter made a quick phone call. At 8:11, Priya brought the worn folder over to the observation deck. At 8:00, Hakim moved the blue wrench into the server room. At 8:01, she brought the blue wrench over to the observation deck. At 8:02, Lena moved the blue wrench into the server room. At 8:03, Marcus brought the blue wrench over to the east wing. At 8:04, he carried the blue wrench to the supply closet. At 8:05, Lena took the blue wrench and placed it in the west wing. At 8:06, Dana moved the blue wrench into the supply closet. At 8:07, Marcus moved the blue wrench into the front office. At 8:08, Lena brought the blue wrench over to the east wing. At 8:09, Dana carried the blue wrench to the gym. At 8:18, Lena brought the worn folder over to the boiler room. At 8:10, she moved the worn folder into the east wing. At 8:12, Hakim brought the worn folder over to the gym. At 8:13, Dana took the worn folder and placed it in the archive room. At 8:14, Jamal took the worn folder and placed it in the west wing. At 8:15, Hakim took the worn folder and placed it in the server room. At 8:16, Priya took the worn folder and placed it in the west wing. At 8:17, Lena moved the worn folder into the meditation room.

Where does Piers believe the blue wrench is? Answer with only the location name (or 'unknown' if they have no belief).

Response 345 tokens out · finish: stop

unknown

Reasoning 1,520 chars

Model reasoning

We need to parse the timeline and infer beliefs. The question: "Where does Piers believe the blue wrench is?" We need to consider Piers' knowledge based on events he observed or was told? Usually in such puzzles, each person only knows actions they performed or observed? The timeline includes many actions by various people. We need to infer Piers' belief about the blue wrench location based on his knowledge up to the end of timeline? The timeline includes actions up to 8:36. Piers appears only at 8:19 (moved worn folder), 8:33 (checked email). Also at 8:33 Piers checked their email. No direct action with blue wrench by Piers. So his belief about blue wrench location would be based on prior knowledge (maybe from email). We need to see if any email content is given? No. So perhaps Piers hasn't observed any blue wrench moves, so his belief is unknown? But maybe he could infer from earlier events if he saw someone else move it? The timeline doesn't specify who sees what. Usually in these puzzles, each person knows only their own actions and maybe what they see (like if they are present). But we have no info about who sees what. However, maybe the puzzle expects that each person knows the location of items they moved, and they assume it stays there unless they hear otherwise. Piers moved the worn folder at 8:19, but not the wrench. He checked email at 8:33; maybe email contains updates about wrench? Not given. So likely Piers has no belief about blue wrench location => unknown.

Thus answer: unknown.

Realized dims 5

dim	value
context_length	37.0
coreference	13.0
distractors	20.0
entity_state	10.0
temporal	0.5405405405405406

Latent params 5

param	value
chain_length	10.0
coref_pressure	5.0
distractor_events	20.0
filler_events	2.0
scramble	1.0