{"uid":"cap_WOe4R9EbpiLcsaoGFUqBt","slug":"chess-notation-tools-piece-moves-from-square-07429b7e","name":"Chess Notation Tools – Piece Moves from Square","description":"Squares a knight, bishop, rook, queen, king or pawn reaches from a square on an empty board, with the count.","url":"https://chess-notation.x402tookit.com/piece-moves?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["piece","square"],"properties":{"color":{"type":"string","description":"white (default) or black, used for pawns only"},"piece":{"type":"string","description":"knight, bishop, rook, queen, king or pawn (or n, b, r, q, k, p)"},"square":{"type":"string","description":"Starting square such as d4"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"from":{"type":["null","string"]},"count":{"type":["null","number"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"]},"squares":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mO9Ak_XMB6E6VKhSo6cGi","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns all squares a given chess piece can reach from a specified starting square on an empty board, along with the count of reachable squares.","exampleAgentPrompt":"What squares can a knight reach from d4 on an empty chessboard, and how many squares is that total?","exampleUseCases":[{"title":"Knight mobility analysis from center","prompt":"Show me all the squares a knight can reach from e4 on an empty board and tell me how many there are."},{"title":"Pawn move options for black","prompt":"What squares can a black pawn reach starting from d5 on an empty board?"},{"title":"Queen coverage from corner square","prompt":"List every square a queen can move to from a1 on an empty board, with the total count."}],"resultDescription":"Returns a list of algebraic notation square names (e.g. ['c6','e6','f5','f3','e2','c2','b3','b5']) that the specified piece can reach from the given starting square on an empty board, plus a count of those squares, a summary string, and metadata fields including source square, timestamp, and optional disclaimer.","failureModes":["Invalid piece name returns an error or empty result","Invalid square notation (e.g. 'z9') returns an error","Missing required query parameters (piece or square) returns a 400-level error","Color parameter ignored for non-pawn pieces","Network or service unavailability returns a 402 or 5xx error"],"whenToPreferThis":"Use this endpoint when you need to programmatically determine the theoretical reach or mobility of a single chess piece from any board square on an empty board. Ideal for chess tutoring tools, puzzle generators, engine analysis helpers, or educational apps that need to explain piece movement rules. Prefer this over a full chess engine when you only need static piece mobility without considering other pieces or game state.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:13:42.168Z","isFirstParty":false,"canonicalSlug":"chess-notation-tools-piece-moves-from-square-07429b7e"}