{
  "id": "2026-10-29-special-early-evening-xz",
  "articleId": "2026-10-29-special-early-evening-xz",
  "competition": "arc-3",
  "publishedAt": "2026-10-29T20:02:30.033949+00:00",
  "kind": "special-early-evening-feature",
  "commissionedBy": "mark-barney",
  "sourceFeatureSha256": "8f865a802ab27b953facc4c89577cd889ae008ea1dd620198df31ef2d446644b",
  "sourceBriefId": "2026-10-29-evening-arc-3-preview",
  "sourceBriefSha256": "be0bbaecb777aa6ddf09cf2fd6e684c4bd388cc388848e4a14c7c1b21a096871",
  "sourceSha256": "83b3e9379c10a8ca6028155c930b01484b20b4a8468dae9b7dc82c88d6215e12",
  "sourceUrl": "https://arc.markbarney.net/api/kaggle/arc-prize-2026-arc-agi-3/board",
  "accessedAt": "2026-10-29T20:01:22.978725+00:00",
  "latestAt": "2026-10-29T19:52:15Z",
  "dataAsOf": "2026-10-29T19:52:15Z",
  "baselineAt": "2026-10-28T21:49:27Z",
  "comparisons": {
    "15486995": {
      "end": [
        "2026-10-29T19:52:15Z",
        70.02,
        2
      ],
      "start": null
    },
    "15487093": {
      "end": [
        "2026-10-29T19:52:15Z",
        52.95,
        4
      ],
      "start": null
    },
    "15499660": {
      "end": [
        "2026-10-29T19:52:15Z",
        75.56,
        1
      ],
      "start": [
        "2026-10-27T06:14:10Z",
        75.56,
        1
      ]
    },
    "15605182": {
      "end": [
        "2026-10-29T19:52:15Z",
        56.02,
        3
      ],
      "start": [
        "2026-10-24T06:10:13Z",
        56.02,
        3
      ]
    },
    "16021367": {
      "end": [
        "2026-10-29T19:52:15Z",
        51.51,
        5
      ],
      "start": [
        "2026-10-28T02:47:04Z",
        51.51,
        4
      ]
    }
  },
  "observations": {
    "15486995": {
      "members": [
        "dlorah",
        "driessmit1",
        "infinitecreativity",
        "jeroencottaar",
        "pressman1",
        "stefano1283"
      ],
      "name": "Tufa Labs",
      "observedAt": "2026-10-29T19:52:15Z"
    },
    "15487093": {
      "members": [
        "xiaoz259"
      ],
      "name": "xz",
      "observedAt": "2026-10-29T19:52:15Z"
    },
    "15499660": {
      "members": [
        "threerabbits"
      ],
      "name": "Yi-Chia Chen @ Fields Model",
      "observedAt": "2026-10-29T19:52:15Z"
    },
    "15605182": {
      "members": [
        "dzjiann",
        "keithtyser",
        "markbarney",
        "mitubant",
        "ngyzly",
        "scizical",
        "sonphamorg"
      ],
      "name": "Team Turducken",
      "observedAt": "2026-10-29T19:52:15Z"
    },
    "16021367": {
      "members": [
        "dwellement0baser",
        "fses91",
        "gklambauer",
        "lukasaichberger"
      ],
      "name": "the last dance 🕺",
      "observedAt": "2026-10-29T19:52:15Z"
    }
  },
  "entries": {
    "teamId": "15487093",
    "count": 11,
    "observedAt": "2026-10-29T19:52:15Z",
    "field": "public board row[5]"
  },
  "sources": [
    {
      "id": "person-xz-identity-0",
      "title": "xz — own Kaggle profile, checked October 29",
      "url": "https://www.kaggle.com/xiaoz259",
      "accessedAt": "2026-10-29T18:34:07.598282+00:00"
    },
    {
      "id": "history",
      "title": "xz — Kaggle competition history, checked October 29",
      "url": "https://www.kaggle.com/xiaoz259/competitions",
      "accessedAt": "2026-10-29T18:34:07.598282+00:00"
    },
    {
      "id": "winning-writeup",
      "title": "Read xz’s first-place solution — September 2, 2026",
      "url": "https://www.kaggle.com/competitions/ai-agent-security-multi-step-tool-attacks/writeups/1st-place-solution",
      "accessedAt": "2026-10-29T18:34:07.598282+00:00"
    },
    {
      "id": "github",
      "title": "Explore xz’s public reference code",
      "url": "https://github.com/xz259/Kaggle-AI-Agent-Security-1st-Place-Solution",
      "accessedAt": "2026-10-29T18:34:07.598282+00:00"
    },
    {
      "id": "xz-startup",
      "title": "xz — October 25 startup report, current text and October 29 replies",
      "url": "https://www.kaggle.com/competitions/arc-prize-2026-arc-agi-3/discussion/752485",
      "accessedAt": "2026-10-29T18:34:07.598282+00:00"
    },
    {
      "id": "current-discussion",
      "title": "October 29 public discussion: xz, Jeroen Cottaar and Yi-Chia Chen on current run conditions",
      "url": "https://www.kaggle.com/competitions/arc-prize-2026-arc-agi-3/discussion/753843",
      "accessedAt": "2026-10-29T18:34:07.598282+00:00"
    },
    {
      "id": "staff-incident",
      "title": "María Cruz — October 27 broader investigation/capacity statement",
      "url": "https://www.kaggle.com/competitions/arc-prize-2026-arc-agi-3/discussion/752147#3545843",
      "accessedAt": "2026-10-29T16:55:43.190811+00:00"
    },
    {
      "id": "incident-report",
      "title": "The ARC Daily Digest — October 27 investigation into Kaggle run failures",
      "url": "https://arc.markbarney.net/news/2026-10-27-morning-arc-3",
      "accessedAt": "2026-10-29T18:34:07.598282+00:00"
    },
    {
      "id": "early",
      "title": "The ARC Daily Digest — October 29 Early edition",
      "url": "https://arc.markbarney.net/news/2026-10-29-morning-arc-3",
      "accessedAt": "2026-10-29T18:34:07.598282+00:00"
    },
    {
      "id": "board",
      "title": "ARC-AGI-3 public leaderboard and observed history — October 29 early evening",
      "url": "https://arc.markbarney.net/api/kaggle/arc-prize-2026-arc-agi-3/board",
      "accessedAt": "2026-10-29T20:01:22.978725+00:00"
    },
    {
      "id": "person-jeroen-cottaar-identity-0",
      "title": "Jeroen Cottaar — verified Kaggle account",
      "url": "https://www.kaggle.com/jeroencottaar",
      "accessedAt": "2026-10-09T19:23:29Z"
    },
    {
      "id": "person-yi-chia-chen-identity-0",
      "title": "Yi-Chia Chen — verified Kaggle account",
      "url": "https://www.kaggle.com/threerabbits",
      "accessedAt": "2026-10-09T17:16:30Z"
    }
  ],
  "artwork": {
    "artworkId": "2026-10-29-xz-enters-scoring-hall-v1",
    "imageSrc": "/news-images/2026-10-29-xz-enters-scoring-hall-v1.webp",
    "imageSha256": "9193705d5b54012251acc542acf59a14c5ea76e2d928372ad4ab76ec1281aca4",
    "nativePngSha256": "e8a7a7250f6d5f28778556115bccb1394a9a345e35e5781b4188d815932552c5",
    "generationRecord": "content/news/artwork/2026-10-29-xz-enters-scoring-hall-v1.json"
  },
  "editorApproval": {
    "approvedBy": "mark-barney",
    "approvedAt": "2026-10-29T19:25:15.684977+00:00",
    "noReactionCheckRequired": true
  },
  "reportingNotes": [
    "Full editor-approved sports column, with a brief direct-source teaser for the previous win.",
    "Board source was unchanged on the one final freshness check.",
    "Cat artwork depicts the observed arrival at fourth; current fresh board remains fourth.",
    "Original public profile/discussion check times retained. No broader new source scan or official-remedy claim.",
    "This manual special has no scheduled-edition cutoff and does not replace the 6 pm close."
  ]
}