Prime Path
(Published on 27. January 2021, 00:23 by Realshaggy)
Training puzzle for next weekends Puzzle Grand Prix (with puzzles by polish authors).
Find a path that goes through each digit once. The path may only travel in the four standard directions and may not intersect itself. Starting point and end point are not given. Reading pairs of digits along the path should result in two-digit prime numbers. No prime number may appear more than once, and adjacent prime numbers along the path may not have any digits in common, e.g. 19 might not be visited directly after 97. A list of all used prime numbers is given.
Solution code: For each row the number of horizontal dominoes with two-digit prime numbers, followed by the row number and column number of the start and the row number and column number of the end of the path (10 digits total).
Comments
on 30. August 2021, 02:27 by Realshaggy
Revised labels.
on 28. January 2021, 19:45 by Realshaggy
Man geht zuerst über die 10er Ziffer. So ist es auch im Instruction Booklet beschrieben: https://gp.worldpuzzle.org/content/instruction-booklet-2
on 28. January 2021, 17:56 by sandmoppe
Ich hatte gerade eine kleine Diskussion mit meinem Mann, wie man die Ziffern entlang des Pfades liest. Ich bin der Meinung, dass man zunächst auf die Einer-Ziffer und dann auf die Zehner-Ziffer trifft. Mein Mann sieht es genau umgekehrt. Wer hat recht?
on 27. January 2021, 12:49 by PrimeWeasel
Took me longer to find the path than the dominoes! Fun!
on 27. January 2021, 04:14 by panthchesh
Thanks for the puzzle. I guess I didn't understand the rules at first!
on 27. January 2021, 01:01 by mandourin
Excellent training puzzle. Thanks!
