::: comment :::
I WON I WON (Ralph Wiggum, the Simpsons, s06e08 "Lisa on Ice")
thanks to 1to9only for not killing me towards the end
and to mike for purposely trying to sabotage my victory multiple times
when i played the game i did the minimal check at the last step, after rating the puzzle, so i got a bunch of non minimals higher than my best ratings:
non minimals
...6...9...9..7....5..2.7..8......51..3...68..2....4.9..8.76.4.6..21.5.....4.3... ED=5.0/4.2/3.0
...1...9...1..8....9..5.4..3......46..6...83..1....2.9..8.36.2.6..84.3.....2.7... ED=5.2/3.6/3.6
...3...9...3..4....9..5.7..8......72..6...48..7....1.9..8.73.1.6..41.5.....5.2... ED=5.7/4.5/3.0
...9...2...1..5....5..6.9..8......74..7...18..6....2.9..4.57.1.3..41.7.....2.3... ED=5.8/2.8/2.8
...1...3...3..2....5..6.7..9......71..6...35..7....2.9..4.78.9.6..92.8.....4.6... ED=7.9/7.9/7.5