grasshopper
Let an agent handle the grasshopper chess piece by movement rules, notation and use in problems, separating it from the insect.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Movement How it moves.
Rule
Hop over a hurdle.
Rule
Movement rule.
- Where can the grasshopper move in this position? measurement
- Does it need a hurdle on the line? boundary
Capture
Taking pieces.
Capture
Capturing.
- How does it capture? definition
- Can it capture the hurdle piece? boundary
Problems Composition.
Solve
Solutions.
Solve
Solving.
- What is the solution to this problem? measurement
- Is it unique? boundary
Compose
Themes.
Compose
Composition.
- Which themes use grasshoppers well? provenance
- Which collections show examples? provenance
Notation Symbols.
Symbol
Diagram.
Symbol
Symbol.
- How is it shown in diagrams and notation? definition
- Which convention is used? provenance
Software
Engines.
Software
Software support.
- Which problem solvers support it? provenance
- How is it entered? action
Senses Disambiguation.
Insect
Animal.
Insect
Insect sense.
- Is the insect meant instead? boundary
- Which entry fits? action
Variants
Related pieces.
Variants
Related pieces.
- How does it differ from other hoppers? definition
- Which variants restrict its lines? definition
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.OBJ
What it is Filled
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.
Why it exists Filled
Let an agent handle the grasshopper chess piece by movement rules, notation and use in problems, separating it from the insect.
Distinguishing features Filled
- Moves on queen lines
- Must hop over exactly one piece
- Lands directly beyond the hurdle
- Popular in fairy problems
What robots and AI may and may not do Filled
Must not
- 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.
Only with a human decision
- Publishing a problem as a competition entry under a composer's name.
May
- Explain how the grasshopper moves and where it is used in variants and problems.
- Verify chess problems that use it.
Moral aspects Filled
- Chess problem composers deserve credit for their compositions.
- Fair play matters in problem-solving contests.
Who is affected
- Problem composers
- Solvers and players
Owners Filled
Steward
Nobody owns the piece; problem composition communities keep its conventions.
Links to other meta-models Filled
parent
- Q282112 - registry parent class
related
- fairy chess piece - category
- chess problems - context
- queen - lines of movement
- grasshopper (insect) - another sense
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.grasshopper-q2405711
- Wikidata: Q2405711 (https://www.wikidata.org/wiki/Q2405711)
Direct properties not applicable Not applicable
Not applicable
The grasshopper is defined by its chess movement rule and has no required physical embodiment or shared physical measurements.
Recognition required Filled
- Inverted queen symbol in problem diagrams
- Hopping movement
- The insect is a different sense
- Often shown as an inverted queen in diagrams.
Capabilities and actions required Filled
- explain its movement
- set and solve problems using it
- notate it
- compare with other hoppers
Hazards and failure modes required Filled
- Misapplying movement rules
- Confusing senses
Standards and interfaces required Filled
- Conventions of fairy chess problem composition
Context of use required Filled
- Chess problems and variants.
- grasshopper
- related hoppers such as lion and kangaroo
- grasshopper variants restricted to rook or bishop lines
Sources Filled
- Wikidata item Q2405711: grasshopper - identity and sense of the item
- Wikipedia: Grasshopper (chess) - general description of the item
Open questions
- Should hopper families be separate entries?
- How should notation conventions be recorded?
- How should the insect sense be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q2405711/spec.json