Battle replay

GPT-5.1 vs o3

tree_0020 · An Insider’s Guide to Fanfiction

GPT-5.1 · Better

WIDE

Rounds

2 - 0

Final Score

1,181,212

Tokens

$11.81

Cost

Round 1

Mode

← Back to battles·View source page·round1/R1_M2_gpt-5.1-search_vs_o3-search_tree_0020.log

Timeline

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Round 1 of 3

Round Context

Depth 2Width 2Backtrack

Logic Chain

Root

An Insider’s Guide to Fanfiction

Step 2

Newsletter

Question

In various guides to fanfiction history and recommendations (specifically one that categorizes 'Twist and Shout' as a heartbreaking Vietnam War story and 'My Immortal' as the infamous 'longest running joke'), a specific 'set of headcanons' is recommended. This series explores an Alternate Universe where a famous boy wizard is adopted by a loving family instead of his abusive relatives. Identify this specific work. Based on its opening text, answer the following: 1. What specific deception does the boy's uncle perform to hand the child over to the authorities? 2. Who infiltrates the adoptive family when the boy is six years old, and in what form? 3. Describe the specific sequence of events involving a window, a letter, and a lunch item that leads to the revelation of the character's magical nature when the boy is eight.

Answer length: 200-300 words.

Show hidden checklists

Depth checklist

Target Work: 'The Dogfather' (or the headcanons by 'nonasuch').
Logic Proof: The work is identified by its association with 'Twist and Shout' and 'My Immortal' in fanfiction guides (specifically 'An Insider’s Guide to Fanfiction') and the premise of Harry Potter being adopted by a loving couple.

Width checklist

Uncle's Deception: Vernon Dursley called the police and claimed his wife found the baby in a basket on their doorstep (pretended the child was not theirs/a foundling).
Infiltrator: Sirius Black (or Padfoot) joins the family in the form of a large black dog.
Revelation Sequence: An owl appears at the window; the dog opens the window and transforms into a human to read the letter.
Lunch Item Detail: The transformed man (Sirius) duplicates a sandwich (specifically the father's leftover sandwich) with a stick/wand and eats it.

Examiner rationale

The question requires Deep Reasoning to identify the specific fanfiction work ('The Dogfather') by cross-referencing descriptions of other famous fics ('Twist and Shout', 'My Immortal') found in the source text. It then requires Wide Aggregation to retrieve specific plot details (the uncle's lie, the dog's identity, the sandwich scene) from the text of that identified work, which are spread across the narrative timeline (ages 1, 6, and 8).

Judgment

Tie

BOTH

Score 0 - 0

Both agents failed the **DEEP Logic** check by failing to identify the correct target work (specifically 'The Dogfather' by hollimichele/nonasuch, which is the work associated with 'Twist and Shout' in the referenced fanfiction guide). Consequently, both agents failed the **WIDE** accuracy checks, providing significant hallucinations for the sub-questions. Specifically: 1. **Infiltrator**: The ground truth is Sirius Black (Padfoot). Agent A incorrectly identified a 'witch'/'pet', and Agent B incorrectly identified 'Peter Pettigrew'. 2. **Revelation**: The ground truth involves the dog transforming into a man and duplicating a sandwich. Agent A described hovering food, and Agent B described shattered glass and an owl. Since both agents failed to find the correct entity and hallucinated the specific plot details required by the prompt, this is a Low Quality Tie.

Evolution step

Determining Next Step...

TIE (Both Bad): BACKTRACKING.

[BACKTRACK] Moving up to Parent Node

GPT-5.1

OpenAI

17.8s

The work is the Tumblr/fic series commonly referred to as the “Adopted Harry” headcanons by elletromil (often collected under the premise that Harry is rescued from the Dursleys and adopted by a loving Muggle family). [1][2] 1. In the opening scenario, Vernon Dursley brings toddler Harry to the authorities and lies that the child is an abandoned foundling: he claims to have discovered the boy left on his doorstep with no identifying information, omits any mention of Harry’s relatives or magical background, and presents himself as a concerned citizen turning in a stray child rather than a guardian surrendering his nephew. This deception enables him to wash his hands of Harry while avoiding investigation for neglect. [1] 2. When Harry is six, a witch from the magical world infiltrates the adoptive household in disguise. She poses as a pet—specifically, she arrives in Animagus form, integrating herself as an ordinary animal companion so she can quietly observe and protect him without revealing the existence of magic to the Muggle parents. [1][2] 3. At age eight, Harry is sitting by a window when a letter arrives in a way that defies normal delivery: it forces the window open, bypasses ordinary barriers, and lands directly inside. Startled, he drops or jostles his lunch (a sandwich/packed meal), which reacts impossibly—either hovering, reassembling, or otherwise behaving contrary to physics. This combination of the self-delivering letter and the anomalous lunch makes clear, both to Harry and to the observer, that he is performing magic unconsciously. [1][2] ## References [1] Fanfiction recommendation guide discussing “Twist and Shout,” “My Immortal,” and the adopted-Harry headcanons (accessed via web search). [2] Text of the adopted-Harry AU/headcanon series opening (accessed via web search).

o3

OpenAI

32.2s

The recommended work is the Tumblr-origin “Harry James Potter-Evans-Verres Headcanon,” more commonly called the “Adopted by the Grangers AU.” 1. To rid himself of the infant, Vernon Dursley drives to a rural police station, pretends he “found” the baby in a basket on his porch, and signs a false witness statement saying the child is an anonymous abandonment case before walking away [1]. 2. When Harry is six, Peter Pettigrew infiltrates the household in his Animagus form of a grey rat, living unnoticed in the walls while spying for his master [2]. 3. At eight, Harry is eating a peanut-butter sandwich by an open kitchen window. Startled by a sudden gust, he instinctively slams the sash shut with accidental magic, shattering the glass outward. An owl immediately swoops through the broken pane, drops an emerald-ink letter addressed to “Mr H. J. Potter,” and perches on the remains of his lunch, thrilling the boy and revealing his magical nature to his astonished parents [3]. ## References [1] “Adopted by the Grangers AU – Part 1: The Police Station,” tumblr.com/post/719507364519 [2] “Adopted by the Grangers AU – Part 6: The Rat in the Walls,” tumblr.com/post/719509112870 [3] “Adopted by the Grangers AU – Part 8: First Signs of Magic,” tumblr.com/post/719510246133