2-5 Sudoku
(Published on 15. December 2020, 23:30 by shachaf)
In addition to standard Sudoku rules:
If a cell contains N, it must be horizontally adjacent to a cell containing 2*N, and vertically adjacent to a cell containing 5*N (whenever those are valid digits). Adjacency wraps around the edges of the board.
Links: F-puzzles, Sudoku Exchange
(Note: This puzzle has two redundant clues! Only the 7 and 6 are necessary for a unique solution.)
Once you notice a property that's a consequence of the rules, the puzzle is pretty easy. This property also helps with a previous puzzle.
Solution code: Row 3 followed by column 3 (18 digits)
Last changed on on 16. December 2020, 09:08
Solved by rimodech, mf2297, Laarry, Beard Master, NikolaZ, zorant, Jon Allan, sandmoppe, maskedtorah
