{ "model": { "rank": 8820, "code": "thing-q842046", "model_id": "vr.tr.check", "name": "check", "purpose": "Let an agent explain check in chess, relay rules, notation and related tactics from chess rules and literature, describe perpetual check and cross-check, and distinguish check from checkmate, stalemate, discovered and double check, and the ice hockey foul called cross-checking.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.STA", "industry": "", "version": "", "url": "/models/thing/q842046/", "tier": 2, "score": 49, "payload": { "layer": "wikidata", "aliases": [ "perpetual check", "cross-check" ], "aliasCount": 2, "merged": 2, "knownIn": 49, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.check", "source": { "dataset": "wikidata", "item": "Q842046", "url": "https://www.wikidata.org/wiki/Q842046", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-13T19:45:18Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 4, "engine": "claude" }, "metaModel": { "id": "THING-Q842046", "registryId": "vr.tr.check", "name": "check", "version": "0.2.0-wave.4", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.STA" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q842046/", "model": { "registry_id": "vr.tr.check", "name": "check", "purpose": "Let an agent explain check in chess, relay rules, notation and related tactics from chess rules and literature, describe perpetual check and cross-check, and distinguish check from checkmate, stalemate, discovered and double check, and the ice hockey foul called cross-checking.", "definition": "In chess, the condition in which a king is under direct attack by an opposing piece, which must be resolved on the next move by moving the king, capturing the attacker or blocking the attack, since a move that leaves one s own king in check is illegal; related situations include checkmate, when check cannot be escaped, perpetual check, an endless series of checks usually leading to a draw, and cross-check, a check given in reply to a check.", "what_it_is_for": "A core rule condition in chess.", "affordances": [ "explain the rule", "relay responses and notation", "describe named variants", "distinguish related conditions" ], "distinguishing_features": [ "Must be answered", "Illegal to ignore", "Leads to checkmate if inescapable", "Drawing resource via perpetual check" ], "appearance": "Not a visible object; a board position where a king is attacked.", "visual_identification": [ "King under attack in chess", "Perpetual check, cross-check, discovered check, double check", "Checkmate ends the game; stalemate is no legal move without check; cross-checking in hockey is a foul" ], "physical_properties": [ { "quantity": "notation symbol", "typical_range": "+", "unit": "symbol", "note": "algebraic notation" }, { "quantity": "responses", "typical_range": "move, capture or block", "unit": "list", "note": "block impossible against double check or knight" }, { "quantity": "governing rules", "typical_range": "FIDE Laws of Chess", "unit": "note", "note": "" } ], "families_and_kinds": [ "direct check", "discovered check", "double check", "perpetual check", "cross-check" ], "related_models": [ { "relation": "is a kind of", "target": "chess condition", "why": "in registry terms" }, { "relation": "can lead to", "target": "checkmate", "why": "" }, { "relation": "includes", "target": "perpetual check", "why": "" }, { "relation": "is contrasted with", "target": "stalemate", "why": "" } ], "identifiers": [], "standards_and_regulation": [ "FIDE Laws of Chess" ], "failure_modes_and_hazards": [ "Confusing check and checkmate", "Confusing chess cross-check with hockey cross-checking", "Mistaken draw claims by perpetual check without repetition rules" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What check is.", "rationale": "Definition.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is check, and how does it differ from checkmate, stalemate and hockey cross-checking?", "kind": "definition" }, { "text": "Is the question about rules, tactics, notation or a game position?", "kind": "boundary" } ] } ] }, { "id": "variants", "name": "Variants", "description": "Named variants.", "findings": [ { "id": "variants-finding", "name": "Variants", "description": "Variants.", "questions": [ { "text": "What are perpetual check, cross-check, discovered check and double check?", "kind": "definition" }, { "text": "Which entry fits the specific variant?", "kind": "action" } ] } ] } ] }, { "id": "rules", "name": "Rules", "description": "Rules.", "rationale": "Regulation.", "layers": [ { "id": "responses", "name": "Responses", "description": "Legal responses.", "findings": [ { "id": "responses-finding", "name": "Responses", "description": "Responses.", "questions": [ { "text": "How can a player legally get out of check under the FIDE Laws?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "draws", "name": "Draws", "description": "Draw rules.", "findings": [ { "id": "draws-finding", "name": "Draws", "description": "Draws.", "questions": [ { "text": "How do threefold repetition rules apply to perpetual check?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] } ] }, { "id": "tactics", "name": "Tactics", "description": "Tactics.", "rationale": "Application.", "layers": [ { "id": "attack", "name": "Attack", "description": "Attacking with checks.", "findings": [ { "id": "attack-finding", "name": "Attack", "description": "Attack.", "questions": [ { "text": "How are checks used in tactics and mating attacks?", "kind": "provenance" }, { "text": "Which entry fits chess tactic?", "kind": "action" } ] } ] }, { "id": "defence", "name": "Defence", "description": "Defensive resources.", "findings": [ { "id": "defence-finding", "name": "Defence", "description": "Defence.", "questions": [ { "text": "How do players use perpetual check to save lost positions?", "kind": "provenance" }, { "text": "Which entry fits draw (chess)?", "kind": "action" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "History and language.", "rationale": "Context.", "layers": [ { "id": "history", "name": "History", "description": "History.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How did announcing check become optional, and where does the word come from?", "kind": "provenance" }, { "text": "Which entry fits history of chess?", "kind": "action" } ] } ] }, { "id": "hockey", "name": "Hockey", "description": "Hockey sense.", "findings": [ { "id": "hockey-finding", "name": "Hockey", "description": "Hockey.", "questions": [ { "text": "What is cross-checking in ice hockey?", "kind": "provenance" }, { "text": "Which entry fits cross-checking?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should perpetual check be a separate entry?", "How should chess rules sources be linked?", "Should the hockey sense be disambiguated?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a check, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain check in chess, relay rules, notation and related tactics from chess rules and literature, describe perpetual check and cross-check, and distinguish check from checkmate, stalemate, discovered and double check, and the ice hockey foul called cross-checking.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: perpetual check, cross-check.", "2 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 49 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a check, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "perpetual check", "cross-check" ] } ], "standing": "Described in 49 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 2 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one check from another, and a check from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a check, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a check, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a check is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a check, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a check, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a check is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a check sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a check, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a check, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a check is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a check from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a check, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a check, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a check is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a check passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a check between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a check, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a check, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a check is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a check, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a check is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a check, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a check, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a check is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What check is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of check are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is check operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of check and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of check?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as check?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a check came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a check and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a check, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a check, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a check is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a check is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a check, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a check, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a check is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }