Four Neighbor Sudoku02（product）
(Published on 4. February 2021, 15:33 by cdwg2000)
This is a new variant, so just introduce a simple rule set.
Four Neighbor Sudoku(product)
1. Apply the classic Sudoku rules.
2. The relationship between the number of the circled grid and its surrounding neighbors: the upper neighbor is greater than it; the lower neighbor is less than it; the neighbor on the left is an odd number; the neighbor on the right is an even number. At the same time, the circled number（two digits read from left to right）represents the product of it and one of the neighbor numbers.Absent cells are not considered.
Author: Puzzles Lu(芦向明), from China, this question comes from his personal blog.
Solution code: Row 7,Coloum 1.
Comments
on 22. April 2022, 00:49 by ako
Lovely!
Black pencilmarks over black numbers are a mess. I changed the products to bigger light green numbers. Just a suggestion. :)
on 8. February 2021, 18:17 by Tobias
Lovely, thanks for this
on 5. February 2021, 07:13 by cdwg2000
Added F-Puzzles link.
on 5. February 2021, 07:09 by duyt1713
https://f-puzzles.com/?id=y5ssr327
