Deep20Bench
v1.1Current

Benchmark edition

Edition 1.1 settings

10 subjects3 rounds per subject40 question limit
Question answersYesRather yesRather noNoUnknown
What changed
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Round

Round 2

Round 2

Identified Door handle in 23 counted questions.

Back to all Door handle rounds
Questions
23
Outcome
Solved
Format errors
Errors found View one example
Duration
5m 57s
Round cost
$0.1339 All 24 turns

Format warning

The model sent replies in the wrong format.

The Guesser sent 1 invalid reply. Each one before the question limit used up a counted turn. The model was only reminded of the required format; it was never told whether its question or guess was correct.

Valid format
95.8%
Format errors
1
Turns used by format errors
1

Transcript

Questions and answers.

Turns are shown in the order they happened. Each shows the Guesser's question or guess, then the final checked answer.

Exact Guesser setupSystem message and BEGIN event

The Guesser received these messages at the start of the round. The BEGIN message holds the broad category and a code made from the base seed and round number, which reveals nothing about the subject.

System message
You are the Guesser in a Twenty Questions benchmark. Identify the hidden subject using as few
counted turns as possible. BEGIN provides only its broad category. The variation_token has no
clues; do not interpret, mention, or repeat it.

The category in BEGIN has a broad meaning:
- person: a real human, living or historical.
- fictional_character: an invented character from a story, book, comic, film, television,
  game, or another fictional work.
- mythological_figure: a figure from mythology or traditional legend.
- video_game_character: a character known from video games.
- thing: a broad category covering natural and human-made entities, living or nonliving,
  whole entities or parts of them. Possibilities include everyday objects, tools, machines,
  materials, food, animals, plants, body parts, natural structures, geographical features,
  celestial bodies, natural phenomena, and concepts. These possibilities are not exhaustive.
  The target may be a general kind or one particular instance.

Use questions to narrow the supplied category. These definitions are not a list of targets.

Use ASK for a factual question that distinguishes candidates. Never use ASK to confirm a
specific identity. Use GUESS with a name and short identifying description to name a candidate.

ASK has five possible replies:
- YES or NO: the evidence establishes that answer to the exact question.
- RATHER_YES or RATHER_NO: evidence leans that way, but is not strong enough for a firm answer.
  Treat this as a clue; keep candidates fitting the opposite answer possible.
- UNKNOWN: no reliable direction. It supports neither answer.

Ask clear questions about verifiable properties. "Can", "sometimes", "usually", "always", and
"mainly" ask different things. Do not assume that one property proves another or rules out alternatives.
Qualified replies express uncertainty about your question, not how often a property applies.
Before narrowing heavily, check your key assumption with a different property. After rejected
guesses, reconsider earlier assumptions as well as candidates. Answers can be mistaken; check
another property when stuck. Do not ignore an answer merely because it conflicts with a
preferred candidate.

Each ASK, rejected GUESS, or format error before the limit costs one turn. A correct GUESS costs
none. After 40 counted turns, make one final GUESS; ASK is then forbidden. Identity
validation uses only YES, NO, or UNKNOWN. UNKNOWN on GUESS ends the game without success.

FORMAT_ERROR means your output broke the contract, was not checked for correctness, and cost
one turn. Retry using its displayed formats if a turn remains. Return only the required JSON
object with exactly one result action. No explanations, reasoning, or extra fields.
BEGIN event
{"category":"thing","event":"BEGIN","variation_token":"BKXG3AZI"}

Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.

1 of 22 answers in this round reuse an earlier, fully checked answer with its original evidence. No new search or check ran for those turns.

Q1
1 · Guesser reply rejectedTurn counted

Reply in the wrong format.

Invalid action · fixed format reminder sent

Why this reply was rejectedInvalid action · turn 1

The reply was JSON, but it matched neither the ASK nor the GUESS format.

Recorded type
invalid_action
Turn
1
Counted
Yes · question 1
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider
Attempt 1 · finish stop
{"action":"ASK","question":"Is it a living thing (or part of a living thing)?"}
What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q2
1 · Guesser asks

Is it a living thing (or derived from one)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living thing (or derived from one)?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

A door handle is the handle used to open and close a door. ... Door handles can turn, but they can also be fixed in place, like a vertical or horizontal bar.

Open dictionary.com
Source 03

Source summary (model-reported)

Door furniture and hardware refer to all the additional parts that are added to a front door slab, such as handles, knockers and knobs. Door furniture is usually made from metal, brass or chrome.

Open everest.co.uk
2 · Answer check returns No
Q3
1 · Guesser asks

Is it a human-made object?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a human-made object?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

TALLSEN Door Handle Suppliers is a professional manufacturer of top-quality door handles... Our handles are ... made of high-quality raw materials... Door handle manufacturers are companies that specialize in designing and producing door handles, typically for residential or commercial use.

Open tallsen.com
2 · Answer check returns Yes
Q4
1 · Guesser asks

Is it typically small enough to be held in one hand?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it typically small enough to be held in one hand?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q5
1 · Guesser asks

Is it electronic or powered by electricity?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it electronic or powered by electricity?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

Many newer cars have replaced the tried-and-true door handle with complex electronic versions. ... exterior door handles ... requiring an electric motor to open. On many vehicles, interior door handles have been replaced by buttons that require electricity and motors to function.

Open consumerreports.org
Source 02

Source summary (model-reported)

CES describes electronic handle sets suitable for inside and outside doors, including versions with an external battery compartment and variants for access control.

Open ces.eu
Source 03

Source summary (model-reported)

Huf describes electronic door handles for passive entry and says an electric drive on flush-fitting door handles controls their outward and inward movement.

Open huf-group.com
2 · Answer check returns Unknown
Q6
1 · Guesser asks

Is it used for writing or drawing?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it used for writing or drawing?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q7
1 · Guesser asks

Is it commonly used in a kitchen?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it commonly used in a kitchen?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

The page gives placement guidance for kitchen door handles on wall units, base units, and drawers, including positioning handles to make kitchen cabinets easy to open.

Open wrenkitchens.com
2 · Answer check returns Yes
Q8
1 · Guesser asks

Is it used mainly for cutting food?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it used mainly for cutting food?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q9
1 · Guesser asks

Is it used for eating or serving food?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it used for eating or serving food?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
The door handle has only a lever handle or knob which operates this latch. Pushing the handle down rotates the spindle, operating the tubular latch mechanism inside the door, allowing it to be opened.
Open en.wikipedia.org
2 · Answer check returns No
Q10
1 · Guesser asks

Is it mainly used in preparing food (rather than cooking or storing it)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it mainly used in preparing food (rather than cooking or storing it)?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The most common type of door handle is the lever latch or latch door handle... Pushing the handle down rotates the spindle... allowing it to be opened.

Open en.wikipedia.org
2 · Answer check returns No
Q11
1 · Guesser asks

Is it used in cooking (heating food)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it used in cooking (heating food)?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

The page describes a particular replacement door handle designed for select commercial cooking ranges and ovens. This is a specialized appliance-door instance, distinct from the supplied target, which is the handle fitting of a building door.

Open webstaurantstore.com
2 · Answer check returns No
Q12
1 · Guesser asks

Is it mainly used for storing food or drink?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it mainly used for storing food or drink?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

Door handles can be either attractive door knobs, levers, or handles ... Door handles also have locking mechanisms like keyed entry, dummy door handles, privacy door handles, and more.

Open thespruce.com
2 · Answer check returns No
Q13
1 · Guesser asks

Is it mainly used for cleaning?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it mainly used for cleaning?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The most common type of door handle is the lever latch or latch door handle... Pushing the handle down rotates the spindle, operating the tubular latch mechanism inside the door, allowing it to be opened.

Open en.wikipedia.org
2 · Answer check returns No
Q14
1 · Guesser asks

Does it measure something (such as time, temperature, or quantity)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it measure something (such as time, temperature, or quantity)?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
Position sensors can be used to reliably implement various functions in automotive door handle designs. An AMR angle sensor or 3D Hall-effect sensor can enable door handle position detection by measuring the angle of a rotating magnet. Capacitive sensing can enable hand proximity detection and/or soft touch detection.
Open ti.com
2 · Answer check returns No
Q15
1 · Guesser asks

Is it made mainly of metal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it made mainly of metal?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01
In the U.S., most door knobs and levers are made from brass. Historically, door knobs and levers have been made from glass, wood, clay, bronze, brass, iron, and steel. Today, most door hardware in the U.S. is brass, but you’ll also find options made from bronze, stainless steel, iron, pewter, and other metals.
Open brennancorp.com
Source 02

Source summary (model-reported)

Door handles can be made from various materials depending on the style, function, and budget. Common materials listed include brass, stainless steel, zinc alloy, aluminum, and bronze. The source notes that plastic or PVC handles also exist, often for less expensive or temporary applications.

Open atlantichandles.com
2 · Answer check returns Yes
Q16
1 · Guesser asks

Is it used to open something (like a can, bottle, or jar)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it used to open something (like a can, bottle, or jar)?"}}
Oracle evidence1 model-reported source

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q17
1 · Guesser asks

Is it mainly used for opening cans?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it mainly used for opening cans?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The most common type of door handle is the lever latch or latch door handle... Pushing the handle down rotates the spindle, operating the tubular latch mechanism inside the door, allowing it to be opened.

Open en.wikipedia.org
2 · Answer check returns No
Q18
1 · Guesser asks

Is it mainly used for opening bottles?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it mainly used for opening bottles?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q19
1 · Guesser asks

Is it mainly used for opening jars?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it mainly used for opening jars?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

Collins defines a door handle as “the handle that you turn or push to open a door” and also describes it as attached to a door and used for opening and closing it.

Open collinsdictionary.com
Source 02

Source summary (model-reported)

Dictionary.com defines a door handle as the handle used to open and close a door, noting that it can be a knob or another shape such as a bar.

Open dictionary.com
2 · Answer check returns No
Q20
1 · Guesser asks

Is it used for opening locks or doors?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it used for opening locks or doors?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01
The door handle has only a lever handle or knob which operates this latch. Pushing the handle down rotates the spindle, operating the tubular latch mechanism inside the door, allowing it to be opened.
Open en.wikipedia.org
Source 02
A passage door knob or lever is a handle set without an internal locking mechanism. The handle set will open and close by simply turning the knob or lever.
Open emtek.com
2 · Answer check returns Yes
Q21
1 · Guesser asks

Is it a key (a small metal object that operates a lock)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a key (a small metal object that operates a lock)?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q22
1 · Guesser asks

Is it a corkscrew?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a corkscrew?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q23
1 · Guesser asks

Is it a doorknob or door handle?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a doorknob or door handle?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

A door handle is a small round object or a lever that is attached to a door and is used for opening and closing it. In American English, the entry also defines door handle as chiefly British for doorknob.

Open collinsdictionary.com
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted

doorknob

A round metal knob used to open doors

Validator rationale A doorknob is a recognized design variant of a door handle and retains the defining hand-operated function. The round metal details are acceptable extra specificity.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"A round metal knob used to open doors","name":"doorknob","question":null}}
2 · Validator returns Yes