CODE:
function masteryToTalentId(buffer) {
    var row = (buffer[0] >> 0x04) - 3
    var col = (buffer[0]  & 0x0F)
    var tree = (buffer[1] - 0x74)

    return 4100 + tree * 100 + row * 10 + col
}



[ { tid: 4211, points: 2, full: <Buffer 41 75 03 00 02> },
  { tid: 4213, points: 2, full: <Buffer 43 75 03 00 02> },
  { tid: 4221, points: 1, full: <Buffer 51 75 03 00 01> },
  { tid: 4222, points: 3, full: <Buffer 52 75 03 00 03> },
  { tid: 4232, points: 1, full: <Buffer 62 75 03 00 01> },
  { tid: 4233, points: 3, full: <Buffer 63 75 03 00 03> },
  { tid: 4234, points: 1, full: <Buffer 64 75 03 00 01> },
  { tid: 4241, points: 3, full: <Buffer 71 75 03 00 03> },
  { tid: 4243, points: 1, full: <Buffer 73 75 03 00 01> },
  { tid: 4252, points: 3, full: <Buffer 82 75 03 00 03> },
  { tid: 4262, points: 1, full: <Buffer 92 75 03 00 01> },
  { tid: 4312, points: 2, full: <Buffer 42 76 03 00 02> },
  { tid: 4313, points: 2, full: <Buffer 43 76 03 00 02> },
  { tid: 4322, points: 3, full: <Buffer 52 76 03 00 03> },
  { tid: 4324, points: 1, full: <Buffer 54 76 03 00 01> },
  { tid: 4334, points: 1, full: <Buffer 64 76 03 00 01> } ]