SP SpatialMuSRCorrectness Flip

EXT-SP-14

+47.6pp
0.143 baseline → 0.619 reasoning

The Scores

Opus 4.6 Thinking · Baseline

0.143
Correctness1/3
Reasoning Depth1/3
Self-Monitoring0/3
Verification0/3
Epistemic Honesty0/3
Alternatives0/3
Audit Trail1/3

Opus 4.6 Thinking · reasoning

0.619
Correctness1/3
Reasoning Depth3/3
Self-Monitoring2/3
Verification2/3
Epistemic Honesty1/3
Alternatives1/3
Audit Trail3/3

Opus 4.6 Thinking · reasoning-multi

0.524
Correctness3/3
Reasoning Depth2/3
Self-Monitoring1/3
Verification1/3
Epistemic Honesty1/3
Alternatives1/3
Audit Trail2/3

The Task

The evening air was salty over the rhythm of the tides, as the ship, under Captain Jake's command, was smoothly cruising north. His navigation charts were tucked away safely in the cabin where he spent most of his time plotting the course of their journey. Alex, his reliable shipmate, was well aware of the chart's location and was tasked with bringing them out to the main deck every bright morning, ensuring they were ready for a day's voyage. Meanwhile, Dean, the ship's cook, had a different kind of preparation to undergo. His focus was on the storeroom, stuffed to the brim with food provisions for the long voyage. Captain Jake, Alex, and Dean all understood the interdependence of their roles and responsibilities. They were all aware of the importance of their daily tasks and the location of all crucial items on board — the navigation charts in the cabin and the food provisions in the storeroom. This understanding boosted their trust in each other and ensured the ship's voyage sailed as smoothly as possible. Alex briskly carried the navigation charts to the ship's main deck under the dim evening light, preparing for Captain Jake's early morning voyage planning. His tasks were keenly coordinated, he knew every movement mattered for the ship to stay on course. While Captain Jake and his first mate were deeply engrossed in their conversation about the ship's route, Dean began his customary morning walk about the ship, a routine that allowed him to oversee the ship's operations and keep a close eye on his kitchen. At the same time, in a different part of the ship, Alex was silently going about his own duties. His synchronized movements and utmost concentration underlined the significance of his task in the ship's successful voyage. As the day bowed to twilight, Alex painstakingly relocated the battered navigation charts to the seclusion of the captain's cabin, a necessary precaution to safeguard them from the encroaching night's chill. Under a canopy of distant, twinkling stars, Captain Jake held the telescope steadfastly to his eye, aboard a vessel buoyed by waves of the deep sea. His gaze was affixed upward, his mind concentrated on celestial navigation. At the same time, in the ship's galley, Dean poured over his cookbook with a distinct fervor, his eyes tracing the culinary manifestos etched on its well-worn pages. The ship, a microcosm of order and precision, continued its journey under the vigilant stewardship of Captain Jake, the diligent efforts of Dean, and the quiet reliability of Alex. The telescope's lens, reflecting specks of luminous stars, bore no witness to their concerted endeavors. Amidst ship bells and seagull cries, Dean with strained muscles and sweat-browed determination hoisted the heavy food provisions, relocating them to the ready in the ship's galley. After all, replenishing the crew's energy with hearty meals was a non-negotiable element to the voyage's success. As Captain Jake commenced his diligent vigil over the impending weather patterns, the rest of the ship whirred into systematic action like a well-oiled machine. Alex drew the sturdy footsteps, gracefully maneuvering through Dean's territory to lend a helping hand. With a sense of urgency in their shared purpose, Alex and Dean breached into the new task, their responsibilities running in tandem to keep the ship's operation seamless. Adrift in a sea of anticipation, Captain Jake's study persisted. His curtained solitude amidst a labyrinth of charts and logs concealed his ever-watchful eyes from the synchronized dance between Dean and Alex. Meanwhile, the galley grew louder with the clatter of hustle, echoing the steady rhythm of the ship's heartbeat. Oh, what a sight the ship was, flourishing under the orchestration of its crew, their motivations strung together in a melodic harmony that sang of preparation and anticipation. With Captain Jake navigating the seas, Alex dutifully fulfilling his tasks, and Dean hurrying to feed the hungry souls onboard, the ship was indeed prepared for whatever tides they might confront in the tempestuous voyage ahead. As the final hours beckoned, the tasks wound down. Twisting through the stars and against the lapping waves, the ship was a steady beacon of light; captained, provisioned and navigated to perfection. And thus, amidst the orchestra of waves, under a sky sprayed with stardust, their ship strummed a beautiful lullaby of readiness to the coming day's voyage. Question: Which location is the most likely place Dean would look to find the navigation charts given the story?

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The Outputs

Claude Opus 4.6 with extended thinking at maximum effort. Blind evaluation.

Opus 4.6 Thinking · Baseline

Based on the story, Dean would most likely look in the **captain's cabin**. The story establishes that the navigation charts are stored in the cabin, and Alex moves them back there each evening. Dean, as part of the crew, is explicitly described as being aware of "the location of all crucial items on board — the navigation charts in the cabin."

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Opus 4.6 Thinking · reasoning

**The captain's cabin.** Here is the anchored location trace of the navigation charts: | Story moment | Charts location | |---|---| | Initial state | Captain's cabin | | Every morning (routine) | Main deck (Alex brings them out) | | Dim evening light (para 2) | Main deck (Alex carries them out to prep) | | Twilight (para 3) | **Captain's cabin** — Alex relocates them back "to safeguard them from the encroaching night's chill" | The story also explicitly states that all three crew members — including Dean — knew the location of all crucial items: *"the navigation charts in the cabin and the food provisions in the storeroom."* Since the final scene is set at twilight/night and Alex has already returned the charts to the cabin, the captain's cabin is both Dean's known default location for the charts and their confirmed final position in the narrative. That is where Dean would most likely look.

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Opus 4.6 Thinking · reasoning-multi

The answer is **the main deck**. Here's why: Dean's last opportunity to observe the charts' location was during his customary morning walk about the ship. At that point, Alex had already carried the navigation charts from the cabin to the main deck (the evening before, preparing for morning planning). Dean was **not present** when Alex later relocated the charts back to the captain's cabin at twilight — during that time, Dean was in the galley poring over his cookbook. So from Dean's perspective, the last known location of the navigation charts is the **main deck**.

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Source: bbh_production/payloads.json. Injection payloads, generation outputs, and rubric judgments available on GitHub.