Irregular 6x6 sudoku rules apply. Place the digits 1 - 6 once in every row, column and bold outlined region.
The line from r1c1 to r6c6 is a palindrome. Digits must read the same in both directions on this line.
Digits must increase along the Thermometers starting from the bulbs.
Every digit must be a Chess Knights move away from exactly one consecutive digit within the same bold outlined region.
Solve Online : Solution Check is enabled
Solution code: Row 6
on 7. May 2025, 23:36 by Briks
Liked this one!
on 7. May 2025, 20:51 by dzamie
Pretty tricky! At the start, I thought the "exactly one" constraint would make it harder (can't eliminate 1/6 from squares that see 2 others), but after some coloring, it turned out to be very helpful!
on 7. May 2025, 20:31 by APigthatflys
Very nicely constructed. Easy but intuitive.
on 7. May 2025, 18:23 by thoughtbyte
Loving this constraint. This is my favorite of the series so far. Very fun, thanks!
Rail Man: Thanks for solving the puzzles and I am glad you enjoy them.
on 7. May 2025, 17:35 by StevenS
@GameWorksRP: I was thinking the same thing, but then I read the rule about "exactly one", and looked at r6c6.
on 7. May 2025, 16:29 by GameWorksRP
I completed the puzzle and am fairly certain there are multiple solutions. You can switch out the 3/4 pairs for 5/6 pairs and none of the rules are broken.
Rail Man: Thanks for solving the puzzle. Swapping 3/4 and 5/6 is not possible as it breaks the Knights constraint - but only in one place so it is easy to miss.
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