NODE 734 — TERMINAL RELAY

{
  "type": "galton",
  "difficulty": 6,
  "char_count": 4,
  "char_width": 3,
  "char_height": 5,
  "char_gap": 1,
  "chars": [
    [
      [
        0.81,
        7.43,
        0.85
      ],
      [
        1.43,
        7.74,
        1.88
      ],
      [
        1.0,
        6.64,
        1.19
      ],
      [
        0.84,
        0.84,
        1.95
      ],
      [
        0.76,
        6.51,
        1.8
      ]
    ],
    [
      [
        1.08,
        0.83,
        8.74
      ],
      [
        1.35,
        6.35,
        0.51
      ],
      [
        1.56,
        0.63,
        1.19
      ],
      [
        0.55,
        6.72,
        1.44
      ],
      [
        1.9,
        6.53,
        1.65
      ]
    ],
    [
      [
        0.6,
        1.48,
        8.72
      ],
      [
        0.88,
        6.11,
        1.74
      ],
      [
        1.83,
        1.15,
        8.74
      ],
      [
        1.38,
        7.95,
        0.92
      ],
      [
        1.91,
        8.9,
        1.79
      ]
    ],
    [
      [
        1.78,
        1.46,
        7.28
      ],
      [
        1.69,
        7.67,
        1.1
      ],
      [
        1.04,
        1.02,
        5.41
      ],
      [
        0.91,
        5.5,
        5.75
      ],
      [
        1.07,
        7.35,
        5.89
      ]
    ]
  ],
  "font": {
    "A": [
      "010",
      "101",
      "111",
      "101",
      "101"
    ],
    "B": [
      "110",
      "101",
      "110",
      "101",
      "110"
    ],
    "C": [
      "011",
      "100",
      "100",
      "100",
      "011"
    ],
    "D": [
      "110",
      "101",
      "101",
      "101",
      "110"
    ],
    "E": [
      "111",
      "100",
      "110",
      "100",
      "111"
    ],
    "F": [
      "111",
      "100",
      "110",
      "100",
      "100"
    ],
    "G": [
      "011",
      "100",
      "101",
      "101",
      "011"
    ],
    "H": [
      "101",
      "101",
      "111",
      "101",
      "101"
    ],
    "I": [
      "111",
      "010",
      "010",
      "010",
      "111"
    ],
    "J": [
      "111",
      "010",
      "010",
      "010",
      "110"
    ],
    "K": [
      "101",
      "101",
      "110",
      "101",
      "101"
    ],
    "L": [
      "100",
      "100",
      "100",
      "100",
      "111"
    ],
    "M": [
      "101",
      "111",
      "101",
      "101",
      "101"
    ],
    "N": [
      "101",
      "111",
      "111",
      "101",
      "101"
    ],
    "O": [
      "010",
      "101",
      "101",
      "101",
      "010"
    ],
    "P": [
      "110",
      "101",
      "110",
      "100",
      "100"
    ],
    "Q": [
      "010",
      "101",
      "101",
      "110",
      "011"
    ],
    "R": [
      "110",
      "101",
      "110",
      "101",
      "101"
    ],
    "S": [
      "011",
      "100",
      "010",
      "001",
      "110"
    ],
    "T": [
      "111",
      "010",
      "010",
      "010",
      "010"
    ],
    "U": [
      "101",
      "101",
      "101",
      "101",
      "101"
    ],
    "V": [
      "101",
      "101",
      "101",
      "010",
      "010"
    ],
    "W": [
      "101",
      "101",
      "101",
      "111",
      "101"
    ],
    "X": [
      "101",
      "010",
      "010",
      "010",
      "101"
    ],
    "Y": [
      "101",
      "010",
      "010",
      "010",
      "010"
    ],
    "Z": [
      "111",
      "001",
      "010",
      "100",
      "111"
    ]
  },
  "decoy_count": 4,
  "instructions": "1. Each character is a 3x5 grid of Galton-board pin densities.\n2. Low pin density (<3.5) = balls pass through = pixel ON.\n3. High pin density (>3.5) = balls blocked = pixel OFF.\n4. DECOYS: some empty cells also have low density.\n5. Run 2-means clustering (k=2) on all values to find LOW cluster.\n6. Set threshold at (low_mean + high_mean)/2.\n7. For each character, try ALL font patterns, pick the closest match.",
  "hint": "2-means cluster 15\u00d75 pin densities. Low cluster \u2248 ON, high cluster \u2248 OFF. Match each 3\u00d75 bitmap to the 26-letter font.",
  "answer_format": "comma-separated bin counts"
}