Knight's Tour 2
(Published on 14. September 2025, 10:16 by Lyun Licuss)
This is a variant of sudoku.
Regular Sudoku rules apply:
Each row, column, and 3×3 box contain numbers 1~9.
Knight's Tour rules apply:
The knight moves from the marked cell according to the rules of chess to the end of the star cell,
and the numbers on the movement path start from 1 and gradually increase to 9 then getting in the loop.
The knight may not pass through the given numbers.
Here is the example puzzle (5×5 version):
Main Puzzle:
Regular Sudoku rules apply:
Each row, column, and 3×3 box contain numbers 1~9.
Knight's Tour rules apply:
The knight moves from the marked cell according to the rules of chess to the end of the star cell,
and the numbers on the movement path start from 1 and gradually increase to 9 then getting in the loop.
The knight may not pass through the given numbers.
Here is the example puzzle (5×5 version):
Main Puzzle:
Penpa link. Enjoy the puzzle :D
Solution code: The row and column containing the '8' that the knight passed though for the first time, 18 digits no space.
Solved by 72kchunshuai, sanabas, zhan
Comments
Last changed on 16. September 2025, 03:13
on 15. September 2025, 16:14 by andreatetta
can the knight pass on the same cell twice?
Reply：No，it cannot.
Last changed on 16. September 2025, 03:31
on 15. September 2025, 10:57 by sanabas
First part was smooth, deducing what the final digit of the path must be was a nice bit of logic, but then felt like bifurcation was required. Also, the path isn't unique. To get from the first 5 to the first 7, there are two eligible 6s.
Reply：Yes you are right， just a little flaw.
