Finding a longest path using the wrong algorithm — Advent of Code 2023 day 23 part 1

First sitting for the 23rd day puzzle of Advent of Code 2023. This puzzle took me quite some time! Links: Next part of day 23: https://youtu.be/CHPtdYY-wxw Advent of Code 2023: https://adventofcode.com/2023 Source code repository: https://github.com/epidemian/advent-of-code-2023 Chapters: 0:00 Part 1 description 5:57 Googling & thinking 27:00 Solving part 1 using an ill-fitted algorithm for this task 1:03:36 Wrong answer! I have no idea what's wrong 1:31:40 Visualizing the maze and longest path 1:39:37 Finally noticed the obvious problem. Part 1 answer 1:44:31 Part 2 description 1:45:45 This is not gonna work for part 2