{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "title": "Murdle Dataset Schema",
    "description": "Schema for a dataset of Murdle puzzles, supporting variable categories (including optional motives), element counts (3-5), and flexible facts/solutions.",
    "type": "array",
    "items": {
        "type": "object",
        "properties": {
            "id": {
                "type": "string",
                "description": "Unique identifier for the puzzle"
            },
            "difficulty": {
                "type": "string",
                "enum": [
                    "easy",
                    "medium",
                    "hard"
                ],
                "description": "Difficulty level of the puzzle"
            },
            "state": {
                "type": "object",
                "properties": {
                    "original": {
                        "type": "boolean",
                        "description": "Whether the puzzle is in its original state"
                    },
                    "simplified_category": {
                        "type": "string",
                        "enum": [
                            "suspects",
                            "weapons",
                            "locations",
                            "facts",
                            "solution"
                        ],
                        "description": "The category where the puzzle was simplified (only present when original is false)"
                    },
                    "description": {
                        "type": "string",
                        "description": "Description of the simplification (only present when original is false)"
                    }
                },
                "required": [
                    "original"
                ],
                "if": {
                    "properties": {
                        "original": {
                            "const": false
                        }
                    }
                },
                "then": {
                    "required": [
                        "simplified_category",
                        "description"
                    ]
                },
                "additionalProperties": false,
                "description": "State of the puzzle. When original is false, simplified_category and description indicate where/how the puzzle was simplified."
            },
            "element_count": {
                "type": "integer",
                "minimum": 3,
                "description": "Number of elements in each category (e.g., 3, 4 or more)"
            },
            "categories": {
                "type": "array",
                "items": {
                    "type": "string",
                    "enum": [
                        "suspects",
                        "weapons",
                        "locations",
                        "motives"
                    ]
                },
                "minItems": 3,
                "uniqueItems": true,
                "description": "List of categories in the puzzle; 'motives' is optional"
            },
            "elements": {
                "type": "object",
                "additionalProperties": false,
                "description": "Object with keys matching categories, each containing an array of element objects. Suspects, weapons, and locations are always present; motives are optional.",
                "required": [
                    "suspects",
                    "weapons",
                    "locations"
                ],
                "properties": {
                    "suspects": {
                        "type": "array",
                        "items": {
                            "type": "object",
                            "properties": {
                                "name": {
                                    "type": "string"
                                },
                                "description": {
                                    "type": "string"
                                },
                                "features": {
                                    "type": "object",
                                    "properties": {
                                        "height": {
                                            "type": "string"
                                        },
                                        "handedness": {
                                            "type": "string",
                                            "enum": [
                                                "right",
                                                "left"
                                            ]
                                        },
                                        "eye_color": {
                                            "type": "string"
                                        },
                                        "hair_color": {
                                            "type": "string"
                                        },
                                        "zodiac_sign": {
                                            "type": "string",
                                            "enum": [
                                                "aries",
                                                "taurus",
                                                "gemini",
                                                "cancer",
                                                "leo",
                                                "virgo",
                                                "libra",
                                                "scorpio",
                                                "sagittarius",
                                                "capricorn",
                                                "aquarius",
                                                "pisces"
                                            ]
                                        }
                                    },
                                    "required": [
                                        "height",
                                        "handedness",
                                        "eye_color",
                                        "hair_color"
                                    ],
                                    "additionalProperties": false
                                }
                            },
                            "required": [
                                "name",
                                "description",
                                "features"
                            ],
                            "additionalProperties": false
                        }
                    },
                    "weapons": {
                        "type": "array",
                        "items": {
                            "type": "object",
                            "properties": {
                                "name": {
                                    "type": "string"
                                },
                                "description": {
                                    "type": "string"
                                },
                                "features": {
                                    "type": "object",
                                    "properties": {
                                        "weight": {
                                            "type": "string",
                                            "enum": [
                                                "light",
                                                "medium",
                                                "heavy"
                                            ]
                                        },
                                        "material": {
                                            "type": "string"
                                        }
                                    },
                                    "required": [
                                        "weight"
                                    ],
                                    "additionalProperties": false
                                }
                            },
                            "required": [
                                "name",
                                "description",
                                "features"
                            ],
                            "additionalProperties": false
                        }
                    },
                    "locations": {
                        "type": "array",
                        "items": {
                            "type": "object",
                            "properties": {
                                "name": {
                                    "type": "string"
                                },
                                "description": {
                                    "type": "string"
                                },
                                "setting": {
                                    "type": "string",
                                    "enum": [
                                        "outdoors",
                                        "indoors"
                                    ]
                                }
                            },
                            "required": [
                                "name",
                                "description",
                                "setting"
                            ],
                            "additionalProperties": false
                        }
                    },
                    "motives": {
                        "type": "array",
                        "items": {
                            "type": "string"
                        }
                    }
                }
            },
            "facts": {
                "type": "array",
                "items": {
                    "type": "string"
                },
                "description": "Array of fact strings; variable length"
            },
            "solution": {
                "type": "array",
                "items": {
                    "type": "object",
                    "properties": {
                        "suspect": {
                            "type": "string"
                        },
                        "weapon": {
                            "type": "string"
                        },
                        "location": {
                            "type": "string"
                        },
                        "motive": {
                            "type": "string"
                        },
                        "is_accused": {
                            "type": "boolean",
                            "description": "Whether this solution object represents the accused. Exactly one solution object must have is_accused: true."
                        }
                    },
                    "additionalProperties": false
                },
                "description": "Array of solution mappings; length must match element_count. Exactly one object must have is_accused: true.",
                "allOf": [
                    {
                        "description": "Exactly one solution object must have is_accused: true",
                        "contains": {
                            "properties": {
                                "is_accused": {
                                    "const": true
                                }
                            }
                        }
                    }
                ]
            }
        },
        "required": [
            "id",
            "difficulty",
            "element_count",
            "categories",
            "elements",
            "facts",
            "solution"
        ],
        "additionalProperties": false
    }
}