Saturday 25 April 2020

Hidoku no 2 (3 by 3)

Last night I changed my hidoku creation program so that it could produce puzzles from 3 by 3 up to 12 by 12. Here is a 3 by 3 puzzle, which is clearly very easy. You could perhaps work through it with a young child.

Here is a reminder of the rules. I arranged the numbers 1 through 9 in ascending order on the grid below before removing some of them at random. Your job is to replace the numbers I have removed. When you have finished, the grid must contain all the numbers 1 through 9 exactly once and cells with consecutive numbers must be joined horizontally, vertically or diagonally:



See answer