Logic Masters Deutschland e.V.

Normal sudoku rules: Every row, column, and box must contain a complete set of the digits 1-9.

Anti-knight: Cells that are a chess knight’s move apart cannot contain the same digit.

Quadruples: Digits in a Quadruple circle must be placed at least once in the four cells touching that circle.

A note about difficulty: On our website, Missing Deck Puzzles, we categorize our puzzles as

• Brassica
• GAS
• Mild Indigestion
• Indigestion
• Strong Indigestion
• Heartburn

We generally only our Mild Indigestion and higher puzzles on LMD, with Indigestion usually corresponding roughly to 1-2 stars on LMD and Heartburn anywhere from 2-4 stars on LMD. We don't typically share here our GAS or Brassica puzzles but please go explore our archive if you'd like to see some of those. GAS corresponds to the original daily GAS puzzles, where "hats" were awarded for times on the order of 5-10 minutes. Brassica puzzles are intended to be much easier, suitable for beginning solvers.

We categorized this puzzle as Mild Indigestion.

Try the puzzle on the SudokuPad app by Sven Neumann.

You can find a complete list of our puzzles on LMD here. Please also visit us at Missing Deck Puzzles, where we post a new puzzle each day.