{
  "game_id": "MG1001_FULL_DEMO_2025",
  "initial_board": [
    { "id": "c1", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
    { "id": "c2", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
    { "id": "c3", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
    { "id": "c4", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
    { "id": "c5", "type": "C", "name": "樱桃", "image_url": "https://example.com/cherry.png" },
    { "id": "c6", "type": "C", "name": "樱桃", "image_url": "https://example.com/cherry.png" },
    { "id": "c7", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
    { "id": "c8", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
    { "id": "c9", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" }
  ],
  "timeline": [
    {
      "round": 1,
      "board": [
        { "id": "c1", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
        { "id": "c2", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
        { "id": "c3", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
        { "id": "c4", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
        { "id": "c5", "type": "C", "name": "樱桃", "image_url": "https://example.com/cherry.png" },
        { "id": "c6", "type": "C", "name": "樱桃", "image_url": "https://example.com/cherry.png" },
        { "id": "c7", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
        { "id": "c8", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
        { "id": "c9", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" }
      ],
      "pairs": [
        {
          "card_type": "A",
          "count": 2,
          "card_ids": ["c1", "c2"],
          "slot_indices": [0, 1]
        }
      ],
      "pairs_count": 1,
      "drawn_cards": [
        {
          "slot_index": 0,
          "card": { "id": "c10", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" }
        }
      ],
      "reshuffled": false,
      "can_continue": true
    },
    {
      "round": 2,
      "board": [
        { "id": "c10", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
        null,
        { "id": "c3", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
        { "id": "c4", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
        { "id": "c5", "type": "C", "name": "樱桃", "image_url": "https://example.com/cherry.png" },
        { "id": "c6", "type": "C", "name": "樱桃", "image_url": "https://example.com/cherry.png" },
        { "id": "c7", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
        { "id": "c8", "type": "B", "name": "香蕉", "image_url": "https://example.com/banana.png" },
        { "id": "c9", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" }
      ],
      "pairs": [
        {
          "card_type": "B",
          "count": 4,
          "card_ids": ["c10", "c3", "c4", "c8"],
          "slot_indices": [0, 2, 3, 7]
        }
      ],
      "pairs_count": 2,
      "drawn_cards": [],
      "reshuffled": false,
      "can_continue": true
    },
    {
      "round": 3,
      "board": [
        null,
        null,
        null,
        null,
        { "id": "c5", "type": "C", "name": "樱桃", "image_url": "https://example.com/cherry.png" },
        { "id": "c6", "type": "C", "name": "樱桃", "image_url": "https://example.com/cherry.png" },
        { "id": "c7", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
        null,
        { "id": "c9", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" }
      ],
      "pairs": [
        {
          "card_type": "C",
          "count": 2,
          "card_ids": ["c5", "c6"],
          "slot_indices": [4, 5]
        }
      ],
      "pairs_count": 1,
      "drawn_cards": [],
      "reshuffled": false,
      "can_continue": true
    },
    {
      "round": 4,
      "board": [
        null,
        null,
        null,
        null,
        null,
        null,
        { "id": "c7", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" },
        null,
        { "id": "c9", "type": "A", "name": "苹果", "image_url": "https://example.com/apple.png" }
      ],
      "pairs": [
        {
          "card_type": "A",
          "count": 2,
          "card_ids": ["c7", "c9"],
          "slot_indices": [6, 8]
        }
      ],
      "pairs_count": 1,
      "drawn_cards": [],
      "reshuffled": false,
      "can_continue": false
    }
  ],
  "total_pairs": 5,
  "server_seed_hash": "a1b2c3d4e5f6g7h8i9j0"
}