<ul><li>The author explains their understanding of how to approach finding antinodes in a grid of ligatures through a clear visual illustration.</li><li>They then break down how to determine antinodes algorithmically by finding slope of lines, and prepare to start coding.</li><li>Once they perfect the loop for finding individual antinodes, they move on to finding all antinodes for frequencies of three, rather than just two, antennas.</li><li>The algorithm changes to walking along the line in both directions until I am about to step out of bounds.</li><li>The author then ran their algorithm on the example input and their puzzle input, generating the correct answer for both.</li></ul>

Resonant Collinearity

Discover more