NODE 734 — TERMINAL RELAY

{
  "type": "nurms",
  "control_mesh": [
    [
      0.442308,
      0.557692,
      0.557692,
      0.596154,
      1.173077
    ],
    [
      0.711538,
      0.788462,
      0.057692,
      0.134615,
      0.326923
    ],
    [
      0.826923,
      0.326923,
      0.711538,
      0.326923,
      0.557692
    ],
    [
      0.519231,
      0.211539,
      0.230769,
      0.139423,
      0.232372
    ],
    [
      0.259615,
      0.157051,
      0.129273,
      0.089565,
      0.160969
    ]
  ],
  "subdivisions": 4,
  "positions": [
    [
      0.0,
      0.0
    ],
    [
      0.25,
      0.0
    ],
    [
      0.5,
      0.0
    ],
    [
      0.75,
      0.0
    ],
    [
      1.0,
      0.0
    ],
    [
      0.0,
      0.25
    ],
    [
      0.25,
      0.25
    ],
    [
      0.5,
      0.25
    ],
    [
      0.75,
      0.25
    ],
    [
      1.0,
      0.25
    ],
    [
      0.0,
      0.5
    ],
    [
      0.25,
      0.5
    ],
    [
      0.5,
      0.5
    ],
    [
      0.75,
      0.5
    ],
    [
      1.0,
      0.5
    ],
    [
      0.0,
      0.75
    ]
  ],
  "note": "Subdivide the 5x5 control mesh N times using bilinear upsampling. After each level: original vertices stay in place, edge midpoints are averages of adjacent vertices, face centers are averages of 4 corners. Then sample heights at the given (u,v) positions using bilinear interpolation (or equivalently read the subdivided vertex at those coordinates). Map each height to a letter: int(height * 26) % 26 + 65 -> chr(). Concatenate to get the answer.",
  "hint": "NURMS subdivision cipher \u2014 difficulty 6. Control mesh: 5x5. Subdivision levels: 4. Word length: 16 characters. Apply Catmull-Clark subdivision repeatedly, sample heights at given (u,v), convert each height to A-Z via int(h*26)%26.",
  "answer_format": "comma-separated control point coordinates"
}