AoC 2022.15

sensors.cs

for (var l = 0; l < _sensors.Count; l++)
{
    var sensorL = _sensors[l];

    for (var r = 1; r < _sensors.Count; r++)
    {
        var sensorR = _sensors[r];

        var targetDelta = sensorL.ManhattanRange + sensorR.ManhattanRange + 2;

        var delta = Math.Abs(sensorL.Position.X - sensorR.Position.X) + Math.Abs(sensorL.Position.Y - sensorR.Position.Y);

        if (delta == targetDelta)
        {
            Console.WriteLine($"{l}, {r}");

            /*
             * 2, 11
             * 11, 2
             * 12, 13
             * 13, 12
             */
        }
    }
}