NODE 734 — TERMINAL RELAY

{
  "type": "galton",
  "difficulty": 3,
  "char_count": 5,
  "char_width": 3,
  "char_height": 5,
  "char_gap": 1,
  "chars": [
    [
      [
        1.27,
        0.89,
        6.48
      ],
      [
        0.8,
        6.67,
        1.5
      ],
      [
        1.55,
        1.72,
        7.54
      ],
      [
        1.0,
        8.09,
        1.11
      ],
      [
        0.71,
        1.68,
        5.53
      ]
    ],
    [
      [
        5.49,
        1.23,
        7.33
      ],
      [
        1.32,
        5.47,
        1.12
      ],
      [
        0.6,
        6.76,
        1.7
      ],
      [
        0.63,
        8.36,
        1.54
      ],
      [
        6.05,
        1.93,
        7.48
      ]
    ],
    [
      [
        8.58,
        1.57,
        5.5
      ],
      [
        0.76,
        8.06,
        0.57
      ],
      [
        1.39,
        0.66,
        1.64
      ],
      [
        0.81,
        5.62,
        1.43
      ],
      [
        1.13,
        8.2,
        1.49
      ]
    ],
    [
      [
        0.56,
        0.84,
        8.98
      ],
      [
        1.22,
        5.04,
        1.89
      ],
      [
        0.5,
        1.09,
        6.47
      ],
      [
        0.81,
        8.57,
        1.44
      ],
      [
        1.46,
        5.17,
        1.53
      ]
    ],
    [
      [
        1.65,
        0.57,
        6.0
      ],
      [
        1.56,
        7.65,
        1.88
      ],
      [
        1.41,
        5.97,
        1.47
      ],
      [
        0.9,
        6.17,
        1.68
      ],
      [
        1.97,
        1.13,
        5.99
      ]
    ]
  ],
  "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": 2,
  "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 19\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"
}