Euler Knights
(Published on 6. April 2023, 17:34 by Raumplaner)
Rules
- Euler sudoku rules apply: Place the digits 1-9 and nine different colors exactly once in each row, column and outlined region (every cell has a digit and a color).
- Every possible combination of digit/color must appear exactly once in the final grid.
- Cells in cages of the same letter have the same color. Each letter represents a different color.
- Cells within a knight's move (in chess) must not contain the same digit or color.
- Grey lines are palindromes: Digits (not colors) must read the same from both sides.
- Kropki pairs: Digits in cells connected by a white dot are consecutive. Digits in cells connected by a black dot have a 2:1 ratio. Not all possible dots are necessarily given - there is no negative constraint.
Play the puzzle on SudokuPad
Solution code: Row 1 (from left):
Comments
on 17. July 2025, 00:59 by Fool on Hill
Stunning
on 14. July 2025, 21:41 by Qodec
Wow.
on 8. May 2025, 18:56 by Ambrose
Stunning puzzle!
on 17. June 2024, 13:46 by pms_headache
Great puzzle! I’ve been going back and doing all the anti-knight puzzles and I came to yours. This really deserved more play. It would be perfect for Simon at CtC!
on 11. May 2023, 20:39 by dtoto
Amazing!
on 13. April 2023, 19:43 by arteful
took me multiple days but it was so satisfying once i finally broke it in!
on 10. April 2023, 17:44 by Shuhua Milk
Brilliant!
on 10. April 2023, 17:19 by wullemuus
Sehr gelungenes und abwechslungsreiches Rätsel!
on 8. April 2023, 22:51 by zhall12570
Super fun! Very cool. Will check out your other puzzles.
on 8. April 2023, 01:29 by Krokant
Ausnahmsweise bin ich mal nicht darüber gestolpert, dass die gleiche Farbe nicht die gleiche Zahl bedeutet. Schickes Rätsel. :)
on 7. April 2023, 22:46 by Lorff
I had to use multiple windows in order to solve it and ran into my usual "same colour=same number" logic multiple times but it felt so rewarding to solve this one
on 6. April 2023, 23:24 by Silverscree
I love colouring puzzles, but this Euler constraint I've just seen here and in that 4x4 the other day is a bit different to what I'm used to! It was mostly figuring out how to do the pencil marking that got me, but what a satisfying finish!
