or solve online (using our beta test of Penpa-Edit tools)
Theme: Gas Pipe
Author/Opus: This is the 2nd puzzle from guest contributor Gaurav Kumar Jain.
Rules: Standard Consecutive Pairs Sudoku rules. (If a gray circle is given between two adjacent cells, then the two numbers in those cells must be consecutive. Note not all gray circles are given; adjacent cells without a circle may contain either consecutive numbers or nonconsecutive numbers.)
Difficulty: 3.5 stars
Time Standards (highlight to view): Grandmaster = 3:30, Master = 6:30, Expert = 13:00
Note: Follow this link for Consecutive Pairs Sudoku puzzles on this website. If you are new to this puzzle type, here are our easiest Consecutive Pairs Sudoku to get started on. More Consecutive Pairs Sudoku puzzles can be found in The Art of Sudoku 2 and in Masterpiece Sudoku Mix 6: Consecutive Pairs Sudoku.