Thomas Snyder (aka Dr. Sudoku) is a two-time World Sudoku Champion and five-time US Puzzle Champion, as well as the author of several books of puzzles. His puzzles are hand-crafted, with artistic themes, serving as a kind of “cure for the common sudoku.” Each week he posts a new puzzle on his blog, The Art of Puzzles. This week’s prescription is an Arrow Sudoku puzzle, a sudoku variation that adds a bit of math to the classic logic puzzle.
I'm back for my normal prescriptions after a week off to become the voice of a new puzzle audiobook series. This week I've written one of my favorite sudoku variations, which adds in a small amount of math and a fair amount of new challenge. Here is an arrow sudoku that looks a bit like a spring flower. Enjoy!
Rules: Place a single digit from 1 to 9 into each cell so that no digit repeats in any row, column, or 3x3 bold region. Digits in the circled cells represent the sum of all digits along the path that the arrow travels, and can repeat within a sum provided they obey other sudoku rules.
