#+title: Notes
* part 2 problems
making example 3 from first field of my input

.#..#..
.##.###
..####.
##.##.#
#.####.
#.#.##.
##.##.#
..####.
.##.###
.#..#..
##.....
#.###.#
##.....
##.....
#.###.#
* the mirror should be between 4 & 5
but my output is
horizontal:  Mirror (full false) between 4 and 5. successful lines: map[0:{} 1:{} 2:{} 3:{} 4:{} 6:{} 7:{} 8:{} 9:{} 10:{} 11:{} 12:{} 13:{} 14:{}] ; failed lines: map[5:1]. Max check dist: 4

why is line 4 marked as successful?

** let's turn off verticals, and only look at checks for horizontal 4
** why do i have 'row 4, mirrored 0'?
because of 'should check false' i guess
** now example 3 works, but some other still don't find the mirror
* another example
error should be on line 2

...#...####...#..
.....##.##.##....
##....######....#
..#.##.#..#.##...
##.###.####.###.#
..###...##...###.
#####.##..##.####
#######....######
###...#.##.#...##
....###.##.###...
##.####.##.####.#
..###...##...###.
##.#.##....##.#.#
##..#.#....#.#..#
##.###.#..#.###.#
###.#...##...#.##
..####.####.####.
** deleting around (8,9)
.....
.....
##..#
..#..
##..#
..##.
#####
#####
#####
.....
##..#
..##.
##..#
##..#
##..#
#####
..##.

error should be (2, 3)
** let's only keep vertical, with Smaller 8
oh, there should be 'line 3, 1 error', but there also should  be 'line 2, 1 error'
why don't we have this?