Artisanal Sudoku, Volume 178

1. Migration

• Normal sudoku rules apply (fill each row, column, and 3x3 box with the digits 1-9 once each), and all clues are standard.

• Cages: the sum of the digits inside each cage is equal to the small number in the top left corner.

• Renban lines: purple lines contain a non-repeating set of consecutive digits in any order.

• Very rough difficulty estimate: 3/10

Play online: SudokuPad | unshaded

New to variant sudoku? Check out these beginner-friendly guides to cages and other popular rulesets.

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2. Building Blocks

• Normal sudoku rules apply (fill each row, column, and 3x3 box with the digits 1-9 once each), and all clues are standard.

• Cages: the sum of the digits inside each cage is equal to the small number in the top left corner.

• Quadruple circles: a digit inside a white circle must appear in at least one of the four cells surrounding that circle.

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

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

• Very rough difficulty estimate: 5/10

Play online: SudokuPad | unshaded

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3. Diamond Adjacent

Check out this puzzle on Timotab’s YouTube channel!
The video will be available a few hours after this post goes out. If you click the link and it’s not up yet, try again later (or, even better, subscribe to Timotab’s channel).

• Normal sudoku rules apply (fill each row, column, and 3x3 box with the digits 1-9 once each), and all clues are standard.

• German whispers: along green lines, digits differ from their neighbors by at least 5.

• Quadruple circles: a digit inside a white circle must appear in one of the four cells surrounding that circle.

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

• Very rough difficulty estimates: 9/10, 6/10

Play online: SudokuPad

Extra clues: SudokuPad

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Some other puzzles I enjoyed this week:

• Paired Constraint, by ebiggie

• Disambiguation Arrives Fashionably Late, by HalfBakedLunatic

• Get to the Point, by Matt Tressel

• Keep It Straight, by elseewhy

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This week’s meta-description:
I suppose Diamond Adjacent is a bit hand-wavy as a title, but it felt weird not to acknowledge the jarring collapse in rotational symmetry.

For premium subscribers, hints and two more bonus puzzles are below.