No Love for Box 2
(Published on 4. September 2024, 05:47 by RedBarchetta)
Rules: Place the digits 1 to 9 once each in every row, column, and 3x3 box.
Cupid’s Arrows: Arrows = 2x where x = the arrow's bulb/circle and x also equals the sum of the digits on the rest of the arrow. IOW, the value in the bulb/circle of the arrow is equivalent to the value of the sum of the digits on the spear end of the arrow. IOW, the sum of the digits on the complete arrow must be an even number. It's kind of a secret.
Commentary Corner: Thanks to Will Power and his inspiration for these arrow constraints. I found them highly effective and fun. Go check out his puzzle "The Illusion of Choice", which you now have no choice but to go.
Links:
Solution code: The digits of lonely box 2 - read like a book - left to right and top to bottom (don't over think this - please seriously hold your comments :) )
Comments
on 4. September 2024, 16:15 by SKORP17
IOW = in other words?
on 4. September 2024, 15:16 by VitP
come on people, this is red barchetta. he's done a million puzzles. if you imagine that he does not know how to state arrow rules succinctly, then you should think about it.
so, given that he HAS stated the rules in THIS fashion, you know that there must be a PURPOSE to it.
on 4. September 2024, 10:50 by lmdemasi
The puzzle was nice and flowed well.
Seeing Decapod's comment, I agree the arrow rules are confusingly written. I just assumed they were regular arrows and did the puzzle.
If you are using a standard constraint, I suggest starting with the standard definition. If you want to add other things (like the 2x, and "even secret") put those after the regular definition.
on 4. September 2024, 08:34 by Decapod
I had to read the algebraic definition you gave for "Cupid's Arrows" a few times before I was sure they were just standard arrows. Nice flow. 17 minutes for me.
