There's neither "V" nor "X" in "Eight Knights"
(Published on 14. January 2025, 15:11 by Gauner)
- Normal 8x8-Sudoku-rules apply.
- Anti-Knight: Cells separated by a knight's move in chess may not contain the same digit.
- XV: Neighbouring cells summing to 5 are marked with V. Neighbouring cells summing to 10 are marked with X.
- German Whisper: Neighbouring cells on the green line must have a difference of at least 5.
Quadruples: Circled numbers must appear at least once in the four connecting cells.
- One digit is losing it's religion. (there will be a 3 in a corner)
Solution code: the negative diagonal, from upper left to lower right.
Comments
on 17. January 2025, 18:15 by Ol-Jay
I was going to rate this at least 3 stars because it was way too difficult to figure out which corner was losing its religion in the end - before I realized I had totally forgotten this was a anti-knight puzzle. XD
Thanks for setting, this was a very interesting interaction of one less digit with the whisper line.
on 15. January 2025, 11:28 by polcat
Really nice puzzle!
on 15. January 2025, 05:53 by TheNineElements
Solve Time: 47:28
I rated this 2/5 difficulty.
This was a really enjoyable and fun puzzle. It took me WAY longer than it should have, as for the first 30 minutes of my solve I just totally forgot that the negative XV constraint existed, but once I realized that, everything came together wonderfully.
During those first 30 minutes, I found some very nice logic on the 'more constrained' whisper digits (being this is an 8x8 sudoku), and colored up a lot of the grid. Once I realized that there were anti-XV rules, I was able to clean up my coloring and progressed nicely through the rest of the solve. I think my solve time would have been around 25-30 minutes if I had started with the XV rules in mind.
Overall the required logic was around 2/5 difficulty, but my forgetfulness made the solve harder than it needed to be. Regardless it was a fun solve!
Thanks for sharing!
on 14. January 2025, 17:24 by Toomas_
Great puzzle from start to finish - thanks so much! :D
on 14. January 2025, 17:01 by Marshal on Mars
Fun warm-up puzzle! Once you think about the right digits, it all falls into place neatly.
on 14. January 2025, 16:49 by Joely
I sat there at the end with everything pencil marked, wondering how on Earth the puzzle solves. Love the last rule. Well done and great set.
on 14. January 2025, 16:25 by Titus Adduxas
That was very approachable and enjoyable, though I did rather make a meal of it!
