Logic Masters Deutschland e.V.

Lockstep is an approachable variant Sudoku built around two linked clone regions.

Sudoku:
Place the digits 1–9 in every row, column, and 3×3 box, with no repeats.

Clone Regions:
Corresponding cells in the two shaded clone regions contain the same digit.

German Whispers:
Adjacent digits along a green German Whisper line must differ by at least 5.

Kropki Dots:
Digits separated by a white dot are consecutive.
Digits separated by a black dot are in a 1:2 ratio.
Not all possible Kropki dots are necessarily given.

Play online:
Solve in SudokuPad

This puzzle was inspired by Lockstep, my daily two-board logic game where the two boards are linked together.

You can play Lockstep at DailyLockstep.com.

I hope you enjoy it!