Artisanal Sudoku, Volume 71

1. Fundamentals

• Fill each row, column, and 3x3 box with the digits 1-9 once each.

• Digits in cells separated by a white dot are consecutive.

• Digits in cells separated by a black dot have a 1:2 ratio.

• Along green lines, digits must differ from their neighbors by at least 5.

• Purple lines contain a non-repeating set of consecutive digits in any order.

• The sum of the digits along an arrow is equal to the digit in the connected circle.

• Very rough difficulty estimate: 4/10

Play online: SudokuPad | F-Puzzles

Last spring I published a guide to the basics of killer sudoku, complete with a puzzle designed to highlight several different types of logic. Now, almost a year later, I’m finally getting around to running back the gimmick with a few other popular rulesets. Click here for an in-depth walkthrough of the puzzle above!