Sudoku by R. Kumaresan
or solve online (using our beta test of Penpa-Edit tools)
Theme: Triangles
Author/Opus: This is the 6th puzzle from guest contributor R. Kumaresan.
Rules: Standard Sudoku rules.
Difficulty: 3.5 stars
Time Standards (highlight to view): Grandmaster = 6:30, Master = 9:00, Expert = 18:00
Solution: PDF and solving video.
Note: Follow this link for other classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on. More classic Sudoku puzzles can be found in The Art of Sudoku, The Art of Sudoku 2 and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.
This is the most hated puzzle for me. Hard sudoku, where I need to somehow find tripples. The only way I can do this is time consuming bookkeeping. I wish I had an ability to see that tripples quickly
8:12.Tough one
Amazing solve. Took 11:21 to solve.