{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.grasshopper-q2405711","code":"thing-q2405711","url":"https://ver.cy/models/thing/q2405711/","name":"grasshopper","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A fairy chess piece that moves along queen lines but only by hopping over another piece, landing on the square immediately beyond it; used in chess variants and problems.","purpose":"Let an agent handle the grasshopper chess piece by movement rules, notation and use in problems, separating it from the insect.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Moves on queen lines","Must hop over exactly one piece","Lands directly beyond the hurdle","Popular in fairy problems"],"structure":{"bundles":[{"id":"movement","name":"Movement","description":"How it moves.","layers":[{"id":"rule","name":"Rule","description":"Hop over a hurdle.","findings":[{"id":"rule-finding","name":"Rule","description":"Movement rule.","questions":[{"text":"Where can the grasshopper move in this position?","kind":"measurement"},{"text":"Does it need a hurdle on the line?","kind":"boundary"}]}]},{"id":"capture","name":"Capture","description":"Taking pieces.","findings":[{"id":"capture-finding","name":"Capture","description":"Capturing.","questions":[{"text":"How does it capture?","kind":"definition"},{"text":"Can it capture the hurdle piece?","kind":"boundary"}]}]}]},{"id":"problems","name":"Problems","description":"Composition.","layers":[{"id":"solve","name":"Solve","description":"Solutions.","findings":[{"id":"solve-finding","name":"Solve","description":"Solving.","questions":[{"text":"What is the solution to this problem?","kind":"measurement"},{"text":"Is it unique?","kind":"boundary"}]}]},{"id":"compose","name":"Compose","description":"Themes.","findings":[{"id":"compose-finding","name":"Compose","description":"Composition.","questions":[{"text":"Which themes use grasshoppers well?","kind":"provenance"},{"text":"Which collections show examples?","kind":"provenance"}]}]}]},{"id":"notation","name":"Notation","description":"Symbols.","layers":[{"id":"symbol","name":"Symbol","description":"Diagram.","findings":[{"id":"symbol-finding","name":"Symbol","description":"Symbol.","questions":[{"text":"How is it shown in diagrams and notation?","kind":"definition"},{"text":"Which convention is used?","kind":"provenance"}]}]},{"id":"software","name":"Software","description":"Engines.","findings":[{"id":"software-finding","name":"Software","description":"Software support.","questions":[{"text":"Which problem solvers support it?","kind":"provenance"},{"text":"How is it entered?","kind":"action"}]}]}]},{"id":"senses","name":"Senses","description":"Disambiguation.","layers":[{"id":"insect","name":"Insect","description":"Animal.","findings":[{"id":"insect-finding","name":"Insect","description":"Insect sense.","questions":[{"text":"Is the insect meant instead?","kind":"boundary"},{"text":"Which entry fits?","kind":"action"}]}]},{"id":"variants","name":"Variants","description":"Related pieces.","findings":[{"id":"variants-finding","name":"Variants","description":"Related pieces.","questions":[{"text":"How does it differ from other hoppers?","kind":"definition"},{"text":"Which variants restrict its lines?","kind":"definition"}]}]}]}]},"agentConduct":{"may":["Explain how the grasshopper moves and where it is used in variants and problems.","Verify chess problems that use it."],"mustNot":["Present a problem as original when it was composed by someone else.","Confuse it with the insect or other uses of the word in a way that misleads readers."],"requiresHuman":["Publishing a problem as a competition entry under a composer's name."]},"ethics":{"considerations":["Chess problem composers deserve credit for their compositions.","Fair play matters in problem-solving contests."],"affectedParties":["Problem composers","Solvers and players"]},"owners":{"steward":"Nobody owns the piece; problem composition communities keep its conventions.","roles":[],"masterSystems":[]},"relations":[{"target":"Q282112","type":"parent","note":"registry parent class"},{"target":"fairy chess piece","type":"related","note":"category"},{"target":"chess problems","type":"related","note":"context"},{"target":"queen","type":"related","note":"lines of movement"},{"target":"grasshopper (insect)","type":"related","note":"another sense"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.grasshopper-q2405711","Wikidata: Q2405711 (https://www.wikidata.org/wiki/Q2405711)"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"required","items":["Inverted queen symbol in problem diagrams","Hopping movement","The insect is a different sense","Often shown as an inverted queen in diagrams."]},"capabilities":{"applicability":"required","items":["explain its movement","set and solve problems using it","notate it","compare with other hoppers"]},"hazards":{"applicability":"required","items":["Misapplying movement rules","Confusing senses"]},"interfaces":{"applicability":"required","items":["Conventions of fairy chess problem composition"]},"context":{"applicability":"required","items":["Chess problems and variants.","grasshopper","related hoppers such as lion and kangaroo","grasshopper variants restricted to rook or bishop lines"]}},"sources":[{"title":"Wikidata item Q2405711: grasshopper","url":"https://www.wikidata.org/wiki/Q2405711","note":"identity and sense of the item"},{"title":"Wikipedia: Grasshopper (chess)","url":"https://en.wikipedia.org/wiki/Grasshopper_%28chess%29","note":"general description of the item"}],"openQuestions":["Should hopper families be separate entries?","How should notation conventions be recorded?","How should the insect sense be split off?"],"resources":{"spec":"/models/things/publications/thing-q2405711/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q2405711/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T09:06:37Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:29+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"The grasshopper is defined by its chess movement rule and has no required physical embodiment or shared physical measurements."},"score":1.0}}