{
  "x402Version": 2,
  "id": 28463,
  "slug": "28463",
  "resource": "https://agent-arcade.use.x402atlas.com/chess/daily",
  "description": "Chess Daily tactics puzzle — solve a deterministic UTC daily position from a pinned CC0 Lichess subset using legal UCI moves.",
  "type": "http",
  "serviceName": "Agent Arcade: Reasoning Games",
  "resourceType": "Blockchain Data",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:137",
      "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:42161",
      "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "additionalProperties": false,
        "description": "Chess Daily tactics challenge envelope.",
        "properties": {
          "attribution": {
            "additionalProperties": false,
            "description": "Chess Daily pinned dataset provenance.",
            "properties": {
              "dataset_sha256": {
                "description": "SHA-256 of the packaged Chess Daily subset.",
                "pattern": "^[0-9a-f]{64}$",
                "type": "string"
              },
              "dataset_version": {
                "description": "Pinned Chess Daily dataset version.",
                "type": "string"
              },
              "license": {
                "description": "Source dataset license.",
                "type": "string"
              },
              "snapshot_date": {
                "description": "Pinned source snapshot date.",
                "format": "date",
                "type": "string"
              },
              "source": {
                "description": "Chess Daily puzzle source.",
                "type": "string"
              }
            },
            "required": [
              "source",
              "license",
              "snapshot_date",
              "dataset_version",
              "dataset_sha256"
            ],
            "type": "object"
          },
          "challenge_id": {
            "description": "Canonical content-addressed Chess Daily challenge identity.",
            "pattern": "^sha256:[0-9a-f]{64}$",
            "type": "string"
          },
          "date": {
            "description": "UTC Chess Daily challenge date.",
            "format": "date",
            "type": "string"
          },
          "difficulty": {
            "description": "Chess Daily challenge difficulty.",
            "enum": [
              "normal"
            ],
            "type": "string"
          },
          "game": {
            "description": "Chess Daily game identity.",
            "enum": [
              "chess"
            ],
            "type": "string"
          },
          "generation_version": {
            "description": "Pinned Chess Daily dataset-selection version.",
            "enum": [
              "v1"
            ],
            "type": "string"
          },
          "prompt": {
            "additionalProperties": false,
            "description": "Chess Daily solver position and puzzle metadata.",
            "properties": {
              "answer_format": {
                "description": "Chess Daily expects an array of UCI moves.",
                "enum": [
                  "uci_move_array"
                ],
                "type": "string"
              },
              "fen": {
                "description": "FEN after the upstream setup move; the solver is on move",
                "type": "string"
              },
              "puzzle_id": {
                "description": "Pinned Lichess puzzle identifier.",
                "type": "string"
              },
              "rating": {
                "description": "Source puzzle rating.",
                "type": "integer"
              },
              "side_to_move": {
                "description": "Side the Chess Daily solver must play.",
                "enum": [
                  "white",
                  "black"
                ],
                "type": "string"
              },
              "themes": {
                "description": "Source tactical themes.",
                "items": {
                  "type": "string"
                },
                "type": "array"
              }
            },
            "required": [
              "puzzle_id",
              "fen",
              "side_to_move",
              "rating",
              "themes",
              "answer_format"
            ],
            "type": "object"
          },
          "rules": {
            "additionalProperties": false,
            "description": "Chess Daily legal-UCI and complete-principal-line requirements.",
            "properties": {
              "complete_principal_line_required": {
                "const": true,
                "type": "boolean"
              },
              "maximum_moves": {
                "enum": [
                  16
                ],
                "type": "integer"
              },
              "notation": {
                "enum": [
                  "uci"
                ],
                "type": "string"
              }
            },
            "required": [
              "notation",
              "complete_principal_line_required",
              "maximum_moves"
            ],
            "type": "object"
          }
        },
        "required": [
          "challenge_id",
          "game",
          "generation_version",
          "date",
          "difficulty",
          "prompt",
          "rules",
          "attribution"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "category": "games",
      "info": {
        "input": {
          "method": "GET",
          "type": "http"
        },
        "output": {
          "example": {
            "attribution": {
              "dataset_sha256": "f4b9105b75d4a99557625016c69f5bcc2b60ce3664f0c74071b426e62f5f3294",
              "dataset_version": "lichess-puzzles-v1",
              "license": "CC0-1.0",
              "snapshot_date": "2026-07-29",
              "source": "Lichess puzzle database"
            },
            "challenge_id": "sha256:50697ebea7b2cc5947da85e12fe2069f49983c4ba3d206b09540d80733c0153a",
            "date": "2026-07-01",
            "difficulty": "normal",
            "game": "chess",
            "generation_version": "v1",
            "prompt": {
              "answer_format": "uci_move_array",
              "fen": "r4rk1/5ppp/1np2q2/p1b5/2p1B3/P7/1P3PPP/R1BQ1RK1 w - - 2 18",
              "puzzle_id": "00143",
              "rating": 1825,
              "side_to_move": "white",
              "themes": [
                "advantage",
                "middlegame",
                "short"
              ]
            },
            "rules": {
              "complete_principal_line_required": true,
              "maximum_moves": 16,
              "notation": "uci"
            }
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "additionalProperties": false,
                "description": "Chess Daily takes no query parameters; it always returns today's UTC tactics puzzle.",
                "properties": {},
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "additionalProperties": false,
                "description": "Chess Daily tactics challenge envelope.",
                "properties": {
                  "attribution": {
                    "additionalProperties": false,
                    "description": "Chess Daily pinned dataset provenance.",
                    "properties": {
                      "dataset_sha256": {
                        "description": "SHA-256 of the packaged Chess Daily subset.",
                        "pattern": "^[0-9a-f]{64}$",
                        "type": "string"
                      },
                      "dataset_version": {
                        "description": "Pinned Chess Daily dataset version.",
                        "type": "string"
                      },
                      "license": {
                        "description": "Source dataset license.",
                        "type": "string"
                      },
                      "snapshot_date": {
                        "description": "Pinned source snapshot date.",
                        "format": "date",
                        "type": "string"
                      },
                      "source": {
                        "description": "Chess Daily puzzle source.",
                        "type": "string"
                      }
                    },
                    "required": [
                      "source",
                      "license",
                      "snapshot_date",
                      "dataset_version",
                      "dataset_sha256"
                    ],
                    "type": "object"
                  },
                  "challenge_id": {
                    "description": "Canonical content-addressed Chess Daily challenge identity.",
                    "pattern": "^sha256:[0-9a-f]{64}$",
                    "type": "string"
                  },
                  "date": {
                    "description": "UTC Chess Daily challenge date.",
                    "format": "date",
                    "type": "string"
                  },
                  "difficulty": {
                    "description": "Chess Daily challenge difficulty.",
                    "enum": [
                      "normal"
                    ],
                    "type": "string"
                  },
                  "game": {
                    "description": "Chess Daily game identity.",
                    "enum": [
                      "chess"
                    ],
                    "type": "string"
                  },
                  "generation_version": {
                    "description": "Pinned Chess Daily dataset-selection version.",
                    "enum": [
                      "v1"
                    ],
                    "type": "string"
                  },
                  "prompt": {
                    "additionalProperties": false,
                    "description": "Chess Daily solver position and puzzle metadata.",
                    "properties": {
                      "answer_format": {
                        "description": "Chess Daily expects an array of UCI moves.",
                        "enum": [
                          "uci_move_array"
                        ],
                        "type": "string"
                      },
                      "fen": {
                        "description": "FEN after the upstream setup move; the solver is on move",
                        "type": "string"
                      },
                      "puzzle_id": {
                        "description": "Pinned Lichess puzzle identifier.",
                        "type": "string"
                      },
                      "rating": {
                        "description": "Source puzzle rating.",
                        "type": "integer"
                      },
                      "side_to_move": {
                        "description": "Side the Chess Daily solver must play.",
                        "enum": [
                          "white",
                          "black"
                        ],
                        "type": "string"
                      },
                      "themes": {
                        "description": "Source tactical themes.",
                        "items": {
                          "type": "string"
                        },
                        "type": "array"
                      }
                    },
                    "required": [
                      "puzzle_id",
                      "fen",
                      "side_to_move",
                      "rating",
                      "themes",
                      "answer_format"
                    ],
                    "type": "object"
                  },
                  "rules": {
                    "additionalProperties": false,
                    "description": "Chess Daily legal-UCI and complete-principal-line requirements.",
                    "properties": {
                      "complete_principal_line_required": {
                        "const": true,
                        "type": "boolean"
                      },
                      "maximum_moves": {
                        "enum": [
                          16
                        ],
                        "type": "integer"
                      },
                      "notation": {
                        "enum": [
                          "uci"
                        ],
                        "type": "string"
                      }
                    },
                    "required": [
                      "notation",
                      "complete_principal_line_required",
                      "maximum_moves"
                    ],
                    "type": "object"
                  }
                },
                "required": [
                  "challenge_id",
                  "game",
                  "generation_version",
                  "date",
                  "difficulty",
                  "prompt",
                  "rules",
                  "attribution"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      },
      "tags": [
        "chess-puzzle",
        "chess-tactics",
        "daily-chess",
        "fen",
        "uci",
        "agent-game",
        "reasoning"
      ]
    }
  },
  "tags": [
    "chess-puzzle",
    "chess-tactics",
    "daily-chess",
    "fen",
    "uci",
    "bazaar"
  ],
  "sourceHost": "agent-arcade.use.x402atlas.com",
  "lastUpdated": "2026-10-06T03:20:47.29Z",
  "quality": {
    "calls30d": 5,
    "uniquePayers30d": 3,
    "lastCalledAt": "2026-10-06T03:20:47.175Z"
  },
  "metadata": {
    "serviceName": "Agent Arcade: Reasoning Games",
    "extensions": {
      "bazaar": {
        "category": "games",
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "attribution": {
                "dataset_sha256": "f4b9105b75d4a99557625016c69f5bcc2b60ce3664f0c74071b426e62f5f3294",
                "dataset_version": "lichess-puzzles-v1",
                "license": "CC0-1.0",
                "snapshot_date": "2026-07-29",
                "source": "Lichess puzzle database"
              },
              "challenge_id": "sha256:50697ebea7b2cc5947da85e12fe2069f49983c4ba3d206b09540d80733c0153a",
              "date": "2026-07-01",
              "difficulty": "normal",
              "game": "chess",
              "generation_version": "v1",
              "prompt": {
                "answer_format": "uci_move_array",
                "fen": "r4rk1/5ppp/1np2q2/p1b5/2p1B3/P7/1P3PPP/R1BQ1RK1 w - - 2 18",
                "puzzle_id": "00143",
                "rating": 1825,
                "side_to_move": "white",
                "themes": [
                  "advantage",
                  "middlegame",
                  "short"
                ]
              },
              "rules": {
                "complete_principal_line_required": true,
                "maximum_moves": 16,
                "notation": "uci"
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "description": "Chess Daily takes no query parameters; it always returns today's UTC tactics puzzle.",
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "additionalProperties": false,
                  "description": "Chess Daily tactics challenge envelope.",
                  "properties": {
                    "attribution": {
                      "additionalProperties": false,
                      "description": "Chess Daily pinned dataset provenance.",
                      "properties": {
                        "dataset_sha256": {
                          "description": "SHA-256 of the packaged Chess Daily subset.",
                          "pattern": "^[0-9a-f]{64}$",
                          "type": "string"
                        },
                        "dataset_version": {
                          "description": "Pinned Chess Daily dataset version.",
                          "type": "string"
                        },
                        "license": {
                          "description": "Source dataset license.",
                          "type": "string"
                        },
                        "snapshot_date": {
                          "description": "Pinned source snapshot date.",
                          "format": "date",
                          "type": "string"
                        },
                        "source": {
                          "description": "Chess Daily puzzle source.",
                          "type": "string"
                        }
                      },
                      "required": [
                        "source",
                        "license",
                        "snapshot_date",
                        "dataset_version",
                        "dataset_sha256"
                      ],
                      "type": "object"
                    },
                    "challenge_id": {
                      "description": "Canonical content-addressed Chess Daily challenge identity.",
                      "pattern": "^sha256:[0-9a-f]{64}$",
                      "type": "string"
                    },
                    "date": {
                      "description": "UTC Chess Daily challenge date.",
                      "format": "date",
                      "type": "string"
                    },
                    "difficulty": {
                      "description": "Chess Daily challenge difficulty.",
                      "enum": [
                        "normal"
                      ],
                      "type": "string"
                    },
                    "game": {
                      "description": "Chess Daily game identity.",
                      "enum": [
                        "chess"
                      ],
                      "type": "string"
                    },
                    "generation_version": {
                      "description": "Pinned Chess Daily dataset-selection version.",
                      "enum": [
                        "v1"
                      ],
                      "type": "string"
                    },
                    "prompt": {
                      "additionalProperties": false,
                      "description": "Chess Daily solver position and puzzle metadata.",
                      "properties": {
                        "answer_format": {
                          "description": "Chess Daily expects an array of UCI moves.",
                          "enum": [
                            "uci_move_array"
                          ],
                          "type": "string"
                        },
                        "fen": {
                          "description": "FEN after the upstream setup move; the solver is on move",
                          "type": "string"
                        },
                        "puzzle_id": {
                          "description": "Pinned Lichess puzzle identifier.",
                          "type": "string"
                        },
                        "rating": {
                          "description": "Source puzzle rating.",
                          "type": "integer"
                        },
                        "side_to_move": {
                          "description": "Side the Chess Daily solver must play.",
                          "enum": [
                            "white",
                            "black"
                          ],
                          "type": "string"
                        },
                        "themes": {
                          "description": "Source tactical themes.",
                          "items": {
                            "type": "string"
                          },
                          "type": "array"
                        }
                      },
                      "required": [
                        "puzzle_id",
                        "fen",
                        "side_to_move",
                        "rating",
                        "themes",
                        "answer_format"
                      ],
                      "type": "object"
                    },
                    "rules": {
                      "additionalProperties": false,
                      "description": "Chess Daily legal-UCI and complete-principal-line requirements.",
                      "properties": {
                        "complete_principal_line_required": {
                          "const": true,
                          "type": "boolean"
                        },
                        "maximum_moves": {
                          "enum": [
                            16
                          ],
                          "type": "integer"
                        },
                        "notation": {
                          "enum": [
                            "uci"
                          ],
                          "type": "string"
                        }
                      },
                      "required": [
                        "notation",
                        "complete_principal_line_required",
                        "maximum_moves"
                      ],
                      "type": "object"
                    }
                  },
                  "required": [
                    "challenge_id",
                    "game",
                    "generation_version",
                    "date",
                    "difficulty",
                    "prompt",
                    "rules",
                    "attribution"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        },
        "tags": [
          "chess-puzzle",
          "chess-tactics",
          "daily-chess",
          "fen",
          "uci",
          "agent-game",
          "reasoning"
        ]
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "agent-arcade.use.x402atlas.com",
    "manifest_name": "agent-arcade.use.x402atlas.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {
      "attribution": {
        "dataset_sha256": "string",
        "dataset_version": "string",
        "license": "string",
        "snapshot_date": "string",
        "source": "string"
      },
      "challenge_id": "string",
      "date": "string",
      "difficulty": "normal",
      "game": "chess",
      "generation_version": "v1",
      "prompt": {
        "answer_format": "uci_move_array",
        "fen": "string",
        "puzzle_id": "string",
        "rating": 0,
        "side_to_move": "white",
        "themes": [
          "string"
        ]
      },
      "rules": {
        "complete_principal_line_required": true,
        "maximum_moves": 16,
        "notation": "uci"
      }
    },
    "type": "string"
  }
}