My idea was to make the killers as subtle as possible, since the average would be 5 a priori. I hope you enjoy it! Not all the thermometers are strictly necessary, but they make the path smoother.
f-puzzle link as shown here (this link will not enforce the cage totals)
f-puzzle link with cage totals shown
Here is a harder version with the same solution but shorter thermometers. I think this keeps the path closer to my intended logic. I wish I had posted this version in the first place... sorry, I'm a novice setter, and I need to check more carefully for logic bypasses.
Lösungscode: row 1 followed by row 2 (18 digits total)
am 9. Mai 2021, 00:36 Uhr von cristophermoore
And thanks to JeffWajes and all the solvers!
am 2. Mai 2021, 05:31 Uhr von JeffWajes
Very cool. Even after wrapping my head around how many hidden 10s and 15s there were and how they interacted, it still took me a while to break through. I really enjoyed finding the trick.
am 24. März 2021, 17:10 Uhr von cristophermoore
Hint: although this puzzle doesn't have a magic square, you may find it useful to keep a magic square handy as a "map" of what triples sum to 15, and how odd and even digits participate in or block these triples.