Round

Round 3

Round 3

Identified Door handle in 23 counted questions.

Back to all Door handle rounds
Questions
23
Outcome
Solved
Format errors
No errors
Duration
5m 42s
Round cost
$0.1055 All 24 turns

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":"AMZAISLM"}

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

2 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 asks

Is the subject biological—that is, a living organism, a body part, or a product derived from a living organism?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject biological—that is, a living organism, a body part, or a product derived from a living organism?"}}
Oracle evidence2 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 a mechanism that is attached to a door to enable the user to open or close it. It is typically made of metal, wood, or plastic and is designed to be grasped by the hand and turned or pulled to operate the door.

Open design-encyclopedia.com (opens in a new tab)
Source 02

Source summary (model-reported)

The most common type of door handle is the lever latch or latch door handle... The door handle has only a lever handle or knob which operates the latch.

Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks

Is it human-made rather than naturally occurring?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it human-made rather than naturally occurring?"}}
Oracle evidence1 model-reported source

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

Source 01

Source summary (model-reported)

A door handle or doorknob is a handle used to open or close a door. ... A large number of handles ... are manufactured to fit to standardised door locking or latching mechanisms.

Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns Yes
Q3
1 · Guesser asks

Is the subject a tangible physical object, rather than a concept, service, or abstract entity?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a tangible physical object, rather than a concept, service, or abstract entity?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q4
1 · Guesser asks

Would it typically be found in a household?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Would it typically be found in a household?"}}
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, often found in residential houses and commercial and public buildings. ... door handles in most American commercial and industrial buildings and in many households are lever-operated.

Open en.wikipedia.org (opens in a new tab)
Source 02

Source summary (model-reported)

Door Handles ... can also be found in all types of buildings like residences or commercial buildings. ... By the 20th century, they had become a standard fixture in homes worldwide.

Open dimensions.com (opens in a new tab)
2 · Answer check returns Yes
Q5
1 · Guesser asks

Is it primarily used for preparing, cooking, or serving food?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used for preparing, cooking, or serving food?"}}
Oracle evidence2 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 that you turn or push to open a door. In its hospitality definition, it is an object or lever attached to a door and used for opening and closing it.

Open collinsdictionary.com (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks

Is the subject typically powered by electricity or batteries?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject typically powered by electricity or batteries?"}}
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 or doorknob is a handle used to open or close a door. The most common types of door handle are the lever handle and the doorknob. Pushing the handle down rotates the spindle, operating the tubular latch mechanism inside the door, allowing it to be opened.

Open en.wikipedia.org (opens in a new tab)
Source 02
Door handles usually employ a mechanical system with a screw axle. It’s referred to as a spindle and has a flat section fixed through the door groove.
Open hengly.com (opens in a new tab)
Source 03

Source summary (model-reported)

The page describes smart door locks as using battery power, including rechargeable lithium-ion batteries and AA or AAA batteries, and distinguishes them from mechanical keys used as an emergency fallback.

Open simpled.uk (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks

Is its primary purpose to hold, store, or organize items?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is its primary purpose to hold, store, or organize items?"}}
Oracle evidence2 model-reported sources

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

Source 01
The SmartHandle AX is an electronic fitting that can be used to open and close a door. Products in the SmartHandle AX range may only be used for locking and unlocking doors. No other use is permitted.
Open simons-voss.com (opens in a new tab)
Source 02

Source summary (model-reported)

The supplied subject description identifies a door handle as the hand-operated fitting used to open and close a building door, and distinguishes it from the whole door, lock mechanism, and handle material.

Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q8
1 · Guesser asks

Is the subject typically made of wood or metal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject typically made of wood or metal?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

Door handles can be made out of a plethora of materials. Examples include brass, porcelain, cut glass, wood, and bronze. Pull door handles are typically used in kitchens and on drawers and are usually made of stainless steel.

Open en.wikipedia.org (opens in a new tab)
Source 02

Source summary (model-reported)

Door handles are typically constructed from durable brass, stainless steel or aluminum for long-lasting reliability.

Open lowes.com (opens in a new tab)
2 · Answer check returns Yes
Q9
1 · Guesser asks

Is it a piece of furniture?

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

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

Source 01

Source summary (model-reported)

Door furniture (British and Australian English) or door hardware (North American English) refers to any of the items that are attached to a door or a drawer to enhance its functionality or appearance. Doors generally have at least one fixed handle.

Open en.wikipedia.org (opens in a new tab)
Source 02

Source summary (model-reported)

Class 16 is titled "Miscellaneous Hardware" and includes specific articles of hardware such as door closers, attachable or adjunct handles, hinges, door checks and closures.

Open uspto.gov (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks

Is the subject small enough to be held and used in one hand?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject small enough to be held and used in one hand?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

ADA compliant hardware is designated to operate the opening and closing of a door and must be able to be used with only one hand. It also cannot require the user to tightly grasp, pinch, or twist their wrists to operate the handle.

Open schlage.com (opens in a new tab)
Source 02

Source summary (model-reported)

ADA requires door handles to be ... operable with one hand, and without tight grasping or twisting. ... The code states that they should: 1. Allow one-hand operation.

Open watersonusa.com (opens in a new tab)
2 · Answer check returns Yes
Q11
1 · Guesser asks

Is it primarily used as a tool for repair, construction, or mechanical work?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used as a tool for repair, construction, or mechanical work?"}}
Oracle evidence1 model-reported source

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

Source 01

Source summary (model-reported)

The SmartHandle AX is an electronic fitting that can be used to open and close a door. Products in the SmartHandle AX range may only be used for locking and unlocking doors. No other use is permitted.

Open simons-voss.com (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks

Is it primarily used for personal grooming or hygiene?

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

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

Source 01

Source summary (model-reported)

The page defines a door handle or doorknob as a handle used to open or close a door, and identifies lever handles and doorknobs as common types.

Open en.wikipedia.org (opens in a new tab)
Source 02

Source summary (model-reported)

The article describes an innovative self-dispensing door handle that automatically dispenses hand sanitizer when the door is opened, presenting it as a specialized product intended to address hand hygiene.

Open businesswire.com (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks

Is the subject primarily used for writing, drawing, or other office/desk tasks?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily used for writing, drawing, or other office/desk tasks?"}}
Oracle evidence2 model-reported sources

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

Source 02
The SmartHandle AX is an electronic fitting that can be used to open and close a door. Products in the SmartHandle AX range may only be used for locking and unlocking doors. No other use is permitted.
Open simons-voss.com (opens in a new tab)
2 · Answer check returns No
Q14
1 · Guesser asks

Is its primary purpose decorative rather than functional?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is its primary purpose decorative rather than functional?"}}
Oracle evidence2 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 an essential part of a door that allows for easy opening and closing. Functionally, a door handle provides a grip for the user to pull or push the door. In addition to their practical use, door handles can also enhance the overall look of a door and contribute to the decor of a room or building.

Open echardware.com (opens in a new tab)
Source 02

Source summary (model-reported)

A door handle ... provides a better grip and easier operation when opening and closing the door. ... Overall, it can be said that a door knob is more decorative, while a door handle is more functional.

Open hwt-pro.com (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks

Is the subject commonly used to open, close, or secure something?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject commonly used to open, close, or secure something?"}}
Oracle evidence2 model-reported sources

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

Source 02
A door handle or doorknob is a handle used to open or close a door. A large number of handles, particularly for commercial and residential doors, incorporate latching or locking mechanisms.
Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns Yes
Q16
1 · Guesser asks

Is it specifically used to open a lock?

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

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

Source 01

Source summary (model-reported)

The lever or knob is used to turn the door handle to open the door. When the lever is turned down, the spring-loaded latch retracts from its rest position and goes inside the door. This allows the door to open. The latch mechanism is distinct from the lock mechanism.

Open hiatt-hardware.com (opens in a new tab)
Source 02

Source summary (model-reported)

The latch is retracted by operating the door handle, allowing the door to open. The bolt ensures that the door can only be opened with the appropriate key or by a specific operation. In one configuration, the inside handle can unlock without a key, while the outside handle operates only the latch and a key is required for the deadbolt.

Open bks.de (opens in a new tab)
Source 03

Source summary (model-reported)

Lever door handles are generally connected to a latch or lock through a spindle, so pressing the lever retracts the latch and allows the door to open. Fixed pull handles do not normally operate the latch. Lever movement may operate a latch bolt in some lock configurations.

Open corner-hardware.com (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks

Is the subject commonly used to secure laundry on a clothesline or drying rack?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject commonly used to secure laundry on a clothesline or drying rack?"}}
Oracle evidence3 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.” It also describes it as a small round object or lever attached to a door and used for opening and closing it.

Open collinsdictionary.com (opens in a new tab)
Source 02
Cambridge defines a clothespin as “a device used for holding clothes onto a clothes line while they dry,” and also as a small plastic or wooden object used to fasten clothes to a clothesline while they dry.
Open dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns No
Q18
1 · Guesser asks

Is the subject a type of lock?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a type of lock?"}}
Oracle evidence1 model-reported source

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

Source 01

Source summary (model-reported)

The source defines a door handle or doorknob as a handle used to open or close a door. It also states that many handles incorporate latching or locking mechanisms or are made to fit standardized door locking or latching mechanisms, while some interior handles are used on doors that do not need to be locked.

Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q19
1 · Guesser asks

Is the subject typically attached to a door, window, drawer, or cabinet?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject typically attached to a door, window, drawer, or cabinet?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q20
1 · Guesser asks

Does the subject allow a door, lid, or similar part to pivot or swing open and closed?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the subject allow a door, lid, or similar part to pivot or swing open and closed?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

The rotating spindle engages with a cam or lever inside the latch assembly. This component converts the rotational motion of the spindle into linear motion, pulling the latch bolt back into the door and away from the door frame. With the latch bolt retracted, the door is free to swing open. When you release the handle, springs ... return everything to its original position, [and] the latch bolt extends back into the door frame.

Open dnd-hardware.com (opens in a new tab)
Source 02

Source summary (model-reported)

Motor vehicles include at least one outside door handle for releasing a door latch mechanism in order to open a door. In normal operation, actuating the outside door handle ... fully pivot[s] ... to release the door latch mechanism and open the door.

Open patents.justia.com (opens in a new tab)
2 · Answer check returns Yes
Q21
1 · Guesser guesses

hinge

a movable joint or mechanism attached to a door, lid, or cabinet that allows it to swing open and closed

Validator rationale A hinge is a different door fitting that enables swinging, whereas the target is the hand-operated handle used to open and close the door.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"a movable joint or mechanism attached to a door, lid, or cabinet that allows it to swing open and closed","name":"hinge","question":null}}
2 · Validator returns No
Q22
1 · Guesser asks

Is the subject operated by turning or rotating it?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject operated by turning or rotating it?"}}
Oracle evidence2 model-reported sources

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

Source 01
A door knob is a traditional round grip which requires a twisting motion to unlatch and open a door. A door lever features a handle that unlatches and opens a door with a downward push.
Open schlage.com (opens in a new tab)
Source 02

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... The doorknob... [is operated by] turning the knob.

Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns Yes
Q23
1 · Guesser asks

Is the subject mounted on a window rather than on a door, drawer, or cabinet?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject mounted on a window rather than on a door, drawer, or cabinet?"}}
Oracle evidence1 model-reported source

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

Source 01

Source summary (model-reported)

The vocabulary distinguishes window-handle components, including a “window crank handle” and “window fastener handle,” from door operating elements. It also defines a “pull handle” as a fixed handle mounted on a door leaf providing a means to open and close a door.

Open iso.org (opens in a new tab)
2 · Answer check returns No
G
1 · Guesser guessesNot counted

doorknob

a rounded handle attached to a door that is turned to open or close it

Validator rationale A doorknob is a recognized subtype/design variant of a door handle and retains the target's defining function as a hand-operated fitting for opening and closing a door.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"a rounded handle attached to a door that is turned to open or close it","name":"doorknob","question":null}}
2 · Validator returns Yes